This is for the guys who doubt the modification or still doubting it will work, I am the guy who advised Andy to go this way, I have been a Ducati mechanic basically from birth, as my dad started the Ducati virus in 1966. Me and my dad have always tried to make Ducati bikes better as they come from the factory or polish out the faults Ducati made in the past, as for the modifications and hybrid swapping parts from 1 to the other model this is also a trade I have from my dad. We where the first to build a Ducati supermono with the belt driven engines and using the horizontal cylinder like Ducati did in 1992, our hybrid supermono was build in 1986 when my dad was building TT1 and TT2 bikes for our national championship races, there are loads of examples of crazy builds and modifications my dad build and now a days I am building, I can guarantee this ST2 modification is a thing we have done around 100 times for sure and it works !!. As for more crazy things, I have always seen Ducati as a Lego box, so if you buy a box to build a car you also have the parts to build a trike or even a motorcycle.. if you get my drift lol. As for a current modification we did, we are the first and only guys who have been able to use the modern 1199 electronics and all the features on the older generation engines.. and believe me this is not a plug and play swap. I have been a friend with Andy on Facebook for some time now and seen that he was stripping his 900 due to oil use, I wanted to help him out to reduce cost, get better performance, and share all the ins and outs on this generation bikes . I dont do UA-cam as a uploader, my main social media source is Facebook, but as Andy is involved in the UA-cam thingy, I thought it was a nice opportunity to share the knowledge with him so he can inform this community about the knowledge we have build up in the last 60 years as a Ducati enthusiast (more like freak ) I am not claiming I know everything but I am sure I have build and thought of things with Ducati that 99% never could imagine.. as Andy mentioned in his previous UA-cam video I am specialists in the race bikes and do a lot of rebuilds of ex works SBK engines and even a few motoGP bikes/engines even tho I have never been related to Ducati Corse or the race department. Sorry for the long rant and if Andy doesn't like the comment he can DEL-lete it 😆
Toine van den biggelaar wish there were more like yourself and dad, sharing the knowledge. Now can you just post up some pics of the GP seamless gearbox!LOL😂👍🇬🇧
Thanks so much for your help Andy. its so much appreciated. My ST2 engine finally arrived in Tasmania and it measured up beautifully. Ported the heads, lightened the piston a bit and welch plugged the cylinders. Todays effort is do the cylinder oil ports with m5 grub screws. Have an awesome weekend.
Just watched this again, just what the 900ss carby fraternity needed, I've done this to 3 ss's so far, and it transforms the bike, such a great enjoyable bike! Good man......
There are two types of biker, those who have had an accident and those who are waiting to have one. All we can do is ride safe, stay alert, and hope for the best. I hope your friend is okay.
As I am a specialist bike breaker with a couple of ST2 engines that still need their final strip down I think I will have a go at this, sadly not so easy on either of my 750SS so first I need to get hold of a 900SS. After I have proven this to myself I will probably put together some kits to sell later this year. Before you ask about cams, I already knew about these and they are normally the first part of an ST2 to sell and yes they do go for silly money.
Great stuff Andy; as for the comments about Ducati getting it wrong, they're fully justified. 20 years, or so, ago I knew a bloke who had a 748 and that thing was always in the garage. It was mainly electrics that let it down, although we did see the odd puff of oil smoke every now and then. Lovely looking bikes, but his issues put me off them for life.
I was on the edge of my seat watching you drill into those cylinders, nerve racking stuff, excellent video Andy, nice that you fed the trolls, what a gentleman you are. Hope your friend recovers quickly.
Great work, Andy. Well done. That was really well explained and very interesting to watch. Can’t wait to see the next videos. Finally, so sorry to hear of Katie’s accident. I hope it’s not too serious and she’ll make a complete recovery, bless her.
I’m limited by the equipment I have. I have no 90 degree plate for the drill press and I tried rotating the table but it was impossible to get the cylinder in the correct position. Nothing wrong with the way it was drilled. And did you not see the two M10 threaded rods clamping the cylinders to the drill press? What would you have done? Please enlighten us.
Great video again, always eagerly await the follow ups. Good to see the rare footage of the manufacturing process of the oil rings, you don't get to see that every day. Cheers!
ID DITCH THE AIR FILTER AND ADD VELOCITY STACKS WITH A SCREEN DUCATIS ARE EXTREMELY AIR FLOW SENSITIVE THAT FRONT CYLINDER HAS A REDICKULOS CURVE ON ON MAN THATS CRAZY GREAT VEDIO TONS OF FUN TONY
Great job. Very informative as always. I’m not sure I would have the confidence to have a crack at such work but watching you’re channel that confidence increases all the time. Thank you. Looking forward to seeing what comes back from Gowies.
Best thing about these videos is no bullshit. Just straight up, straight talking and get the job done. Too many 'look at me' videos on how to do things the wrong way. Anyway I'm off to rub copper grease all over my brake pads.
Got to say it take’s a bit of courage to put a drill to you ”new” cylinders. Great job ! And i’m getting all excited about how it’s going to be like riding it afterwards. If it never really been a 100% and with a bit of a upgrade too, must be a great feeling getting on some sweet bendy bits 👍🏻😃
Just binged watched the GS vids from start to finish over the last week lol, really enjoyed it cheers. Looking forward to watching this series, keep up the good work. 😃👌
Why not use taper thread & plugs for a better seal on those 5mm tappings? I´d have preferred to do that & feel a mechanical tightening - yes you used loctite & a wee peen over to stop the straight thread grub screws coming out but what´s to stop them disappearing into the oil jacket after a few heat cycles :)
Because 1/8” BSP is a little on the large size. I don’t have to do any R&D on this, it’s been done before with zero failures. The list of what I could have done is as long as your arm but this is what I did. Many men, many methods. If you’re considering doing yourself just do what you’re comfortable with.
Not sure if this is a good tip or not, but when I've had to put a set screw in to make a plug, I didn't thread all the way it. I've left some taper for the set screw to seat against which doubles up on the sealing from the loctite. Kind if fiddly getting the depth of tapping correct, but made me happy knowing the screws were locked down solid in the taper portion. Might be a good tip, might be a poor tip, just what I've done in the past and worked good for me. May not have worked in the ST cylinders though, might not have had enough depth in the hole to make it work.
It’s and excellent tip actually, and something I actually thought about while I was editing. I’m comfortable that the loctite and spiking will keep them in place.
I really enjoy your videos, you skip the bs and share whats important, must be a southern thing... thats a lot of what should be unnecessary work... stoaked its coming togeather, can't wait untill it's assembled
Cylinder barrel differences fascinating. Oil galleries on the air cooled motor. Fins on a water cooled barrel. Who'da thunk it. Thanx. Me? I'm just a simple Guzzista. Cam down the middle of the vee, tappets running direct in the block, pushrods, valve clearances locknut and adjuster out in the open, 1/2 an hour if you're handy, bish bosh, jobs a good'un..
Great video, thanks for sharing. Increasing displacement from 904cc to 944cc, and higher compression. Not worried about heat going back to oil cooling from water?
Good job. If you want to see real Italian craft, check out the chocolate gaskets and spaghetti O-rings in a recent Moto-Guzzi! Fall apart by looking at 'em. But don't the Italians have a way of making things look nice, work nicely when they do work, and generally deserve a place in our lives! Good health to you!
Are you jesus I was expecting precision instruments and machines. You made it LOOK easy and then I thought , I could do that. Hummm, maybe not. More please. Bet you haven't washed that T shirt yet😂
My friend here in the UK did a top end refresh on his 900SS last year and had exactly the same issue as you with the oil ring on the horizontal cylinder, something not quite right.
Would a tapered pipe thread or maybe only partially forming the threads with a tap and screwing the grub screw home to form the last thread or two be a bit more oil tight? Not saying what you've done will leak but might be a bit more resilient otherwise a very interesting mod.
Shouldn’t you have to rebalance the crankshaft to the upgraded 944cc ? I have blown up my SS engine altering to a 940cc kit without balancing the crankshaft. I had to redo the whole job. + renewal of al bearings in the enige. The 940cc kit was really smoked...
A nice video that Andy, I’m impressed. You made that so easy. I’d love to see Delboy doing that. I’d can see it now reaching or the tube of No Nails🤣😂🤣. I’ve learned so much from this excellent video. Good luck on the heads👊
Oh, is that why my hydraulic brakes on my Mountain Bike are gripping the discs after being stored in a dampish environment, the brake fluid absorbs moisture? Even though it is a sealed system?
It seems to me that there is nothing to make the oil circulate in the cylinder with that mod. Once the cylinder is full of oil the hole that was drilled into the gallery will basically be blocked and all the oil will just bypass it and go through the restrictor orifice into the head. Maybe I'm missing something.
Where normally the water union is located on the left side of the cylinder now there will be the plate from the 900ss cylinder which has a banjo bolt with a hose that goes to the generator cover to flow the oil back in the engine, the casting from both cylinders are the same so it will function as it was original. Trust me I did close to a 100 of these modifications
@@toinevandenbiggelaar6083 oh ok I thought the flow path was different. So the flow to the head is secondary to the main flow out the side of the cylinder?
Hi Andy, Speaking of modifications: why not modify a complete St2 engine and convert it to air/oil cooled including oil cooled heads? So deleting the water pump and plumbing the oil feed and return on the appropriate water inlets and outlets.
Andy great job, I would like to ask you something, I have a 907ie, I’m restoring, my cylinders have a great chance of being in need of replacing or nikasiling them. Could I use the st2 cylinders with the 907 cylinder head without modification?
I like your videos and the way you explain things. Although I couldn't help noticing that the mark on the cylinders is different than the marks on the pistons. I explain what I mean. On the previous videos I've noticed that the SS pistons they have a "C" marking on top. The ST2 cylinders though they have a "B" marking on them. That means different sizes, if I'm right. Are you going up on cc or down? I'm not a mechanic by the way. So I might be very much wrong on what I comment. Cheers
When they are machined they have to land within a plus or minus tolerance of the target size, the ‘B’ or ‘C’ let’s the guys on the assembly line know what cylinder to match it to so the correct clearance is achieved.The 900 cylinders are 92mm and the CC is 904. The ST2 cylinders are 94mm and the CC is 944, but the piston markings have no baring on that. They all have an ‘A’ (intake side) an ‘S’ (exhaust side) and the tolerance designation, the ‘B’ or ‘C’ Make sense?
@@ANDY5 so in other words you going up on cc. Sorry for being a pain. I'm just planning to change piston rings and change valve shims on my Monster 600 so I just watch every single video that has to do with this procedure. Double checking every thing since I could go very wrong and potentially destroy the engine
G’day mate, wow you have had a binge watch haven’t you? It is an option to re bore and re Nikasil, but a very expensive option. This was a very cheap solution and, thankfully, it worked out great. Thanks for all the great comments. Andy.
@@ANDY5 I think you were really fortunate to find the ST2 barrels and pistons and the conversion to oil cooling was most interesting. The opportunity was definitely a no brainer. I have an 01 model so don’t have the external oil return lines but it may still be a way to go “big bore” at an acceptable cost. Your paint job on the motor looked a real treat. Keep up the good work and keep safe.
Of course. I mentioned at one point that I needed to clean and blow them out. I did this mostly off camera as the video was already going to be long, there is some footage of me blowing it down. It’s well flushed. Any that may have been trapped that do find their way down will be stopped by the pre pump strainer and I will get them at the next oil change.
It will take the path of least resistance and fill the chamber first. It will force its way to the head and rockers only because the pump volume exceeds the return volume from the chambers, otherwise it would never reach the top.
This is for the guys who doubt the modification or still doubting it will work, I am the guy who advised Andy to go this way, I have been a Ducati mechanic basically from birth, as my dad started the Ducati virus in 1966. Me and my dad have always tried to make Ducati bikes better as they come from the factory or polish out the faults Ducati made in the past, as for the modifications and hybrid swapping parts from 1 to the other model this is also a trade I have from my dad. We where the first to build a Ducati supermono with the belt driven engines and using the horizontal cylinder like Ducati did in 1992, our hybrid supermono was build in 1986 when my dad was building TT1 and TT2 bikes for our national championship races, there are loads of examples of crazy builds and modifications my dad build and now a days I am building, I can guarantee this ST2 modification is a thing we have done around 100 times for sure and it works !!. As for more crazy things, I have always seen Ducati as a Lego box, so if you buy a box to build a car you also have the parts to build a trike or even a motorcycle.. if you get my drift lol. As for a current modification we did, we are the first and only guys who have been able to use the modern 1199 electronics and all the features on the older generation engines.. and believe me this is not a plug and play swap. I have been a friend with Andy on Facebook for some time now and seen that he was stripping his 900 due to oil use, I wanted to help him out to reduce cost, get better performance, and share all the ins and outs on this generation bikes . I dont do UA-cam as a uploader, my main social media source is Facebook, but as Andy is involved in the UA-cam thingy, I thought it was a nice opportunity to share the knowledge with him so he can inform this community about the knowledge we have build up in the last 60 years as a Ducati enthusiast (more like freak ) I am not claiming I know everything but I am sure I have build and thought of things with Ducati that 99% never could imagine.. as Andy mentioned in his previous UA-cam video I am specialists in the race bikes and do a lot of rebuilds of ex works SBK engines and even a few motoGP bikes/engines even tho I have never been related to Ducati Corse or the race department. Sorry for the long rant and if Andy doesn't like the comment he can DEL-lete it 😆
Toine van den biggelaar wish there were more like yourself and dad, sharing the knowledge. Now can you just post up some pics of the GP seamless gearbox!LOL😂👍🇬🇧
Or he could pin it 👍
Link to facebook page Toine?
facebook.com/biggelaarperformance/
Or he could forward it to Del!,it's not often he gets a comment from someone who knows what they're talking about.
Thanks so much for your help Andy. its so much appreciated. My ST2 engine finally arrived in Tasmania and it measured up beautifully. Ported the heads, lightened the piston a bit and welch plugged the cylinders. Todays effort is do the cylinder oil ports with m5 grub screws. Have an awesome weekend.
Just watched this again, just what the 900ss carby fraternity needed, I've done this to 3 ss's so far, and it transforms the bike, such a great enjoyable bike! Good man......
Very happy to find your channel on these bikes. Thank you for putting it together
The motorcycles equivalent of an open heart bypass surgery. With a broken step drill. I'm agnostic and praying for the 900's speedy recovery.
Agnostic, I heard theres a cream for that 😂🤣
There are two types of biker, those who have had an accident and those who are waiting to have one. All we can do is ride safe, stay alert, and hope for the best. I hope your friend is okay.
Nerve wracking stuff made look easy.
Wishing that lady a speedy recovery.
As I am a specialist bike breaker with a couple of ST2 engines that still need their final strip down I think I will have a go at this, sadly not so easy on either of my 750SS so first I need to get hold of a 900SS. After I have proven this to myself I will probably put together some kits to sell later this year.
Before you ask about cams, I already knew about these and they are normally the first part of an ST2 to sell and yes they do go for silly money.
Great stuff Andy; as for the comments about Ducati getting it wrong, they're fully justified. 20 years, or so, ago I knew a bloke who had a 748 and that thing was always in the garage. It was mainly electrics that let it down, although we did see the odd puff of oil smoke every now and then. Lovely looking bikes, but his issues put me off them for life.
Well done Andy for taking a deep breath and drilling these cylinders! Don't know if I'd be that brave!
I was on the edge of my seat watching you drill into those cylinders, nerve racking stuff, excellent video Andy, nice that you fed the trolls, what a gentleman you are. Hope your friend recovers quickly.
Really appreciating all the info you’re passing on as well as the experience! Loving it mate keep it up
hello, great tutorial, essential for those who love ducati 2 valves
thanks Andy !!
Coulda titled that episode “Alchemy”👌🏼 Oil into water today.......pasta into gold tomorrow!😉
I am pleased to hear that the ST2 cylinders good as I own an st2
Thank you 👍
Andy, I take my hat off to you, bloody awesome. Thank you from NZ
Great work, Andy. Well done. That was really well explained and very interesting to watch. Can’t wait to see the next videos. Finally, so sorry to hear of Katie’s accident. I hope it’s not too serious and she’ll make a complete recovery, bless her.
Fascinating to watch things unfold. Great work
That is a wondrous thing! Proper engineering!
Love the “cuooontact” and “safety third” references. Good stuff.
He uses a vise with no drill press and a drill press with no vise. I love it.
I’m limited by the equipment I have. I have no 90 degree plate for the drill press and I tried rotating the table but it was impossible to get the cylinder in the correct position. Nothing wrong with the way it was drilled. And did you not see the two M10 threaded rods clamping the cylinders to the drill press? What would you have done? Please enlighten us.
Was holding my breath during the drilling stages, all good in the end 👍
Great video again, always eagerly await the follow ups. Good to see the rare footage of the manufacturing process of the oil rings, you don't get to see that every day. Cheers!
Awesome job Andy 👍👊
ID DITCH THE AIR FILTER AND ADD VELOCITY STACKS WITH A SCREEN DUCATIS ARE EXTREMELY AIR FLOW SENSITIVE
THAT FRONT CYLINDER HAS A REDICKULOS CURVE ON ON MAN THATS CRAZY GREAT VEDIO TONS OF FUN TONY
Blimey you drilled those holes freehand!
Love the suspense of these "point-of-no-return" videos!
Great comment about lock tight
This is awesome Andy, looking forward to watching this series to completion 👍
Great Andy hope the conversion goes well .
Greetings from Florida
Awesome video, true craftsmanship
Brilliant job Andy looking forward to the next video. Ride safe 🏍.
Balls of steel mate👍
Like a Boss Andy, great job and nice to see the positive help your getting on the project.
Good to see proper engineering.
Good stuff Andy & after the explanation quite a simple logical process.
Great job. Very informative as always. I’m not sure I would have the confidence to have a crack at such work but watching you’re channel that confidence increases all the time. Thank you. Looking forward to seeing what comes back from Gowies.
Awesome work Andy, watching you gives me the confidence needed to take the leap of faith in doing the work on my bike. thx mate.
I take no responsibility 😂
@@ANDY5 Off course, not that is all mine, you being an amateur bush mechanic and self-confessed iriot and all! cheers mate.
Best thing about these videos is no bullshit. Just straight up, straight talking and get the job done. Too many 'look at me' videos on how to do things the wrong way.
Anyway I'm off to rub copper grease all over my brake pads.
Interesting and money saving! Spot on, Andy!
Top stuff mate👍👍👍
Got to say it take’s a bit of courage to put a drill to you ”new” cylinders. Great job ! And i’m getting all excited about how it’s going to be like riding it afterwards. If it never really been a 100% and with a bit of a upgrade too, must be a great feeling getting on some sweet bendy bits 👍🏻😃
Great work Andy.. well done.
Loved the video, hope your friend is ok and gets better soon ❤👍
way to go Andy, lookin cool. and not a tube of no more nails in sight. great work, very interesting.
I really enjoyed this one Andy, very impressive engineering. Hope your friend makes a full and swift recovery.
Watching with interest, looking forward to the next instalment
Love your videos, you have a great pair of hands.
Awesome work Andy 👍
Missed a perfect opportunity for a close up in and out of your tap Andy! Lol!! Great work mate, looking forward to the next instalment.
Think you might need one of those new "Green" black boards.....Great info as usual
Great work Andy, I'da been shitting meself drilling into the new barrels, but you achieved it all with great aplomb... :-)
What a treat to watch.
Well done that man!
What news of Katie?
Best wishes for a rapid and full recovery.
Just binged watched the GS vids from start to finish over the last week lol, really enjoyed it cheers. Looking forward to watching this series, keep up the good work. 😃👌
I was cringing while you drilled that head, great video, can't wait to see her running again 👍🏼
Why not use taper thread & plugs for a better seal on those 5mm tappings? I´d have preferred to do that & feel a mechanical tightening - yes you used loctite & a wee peen over to stop the straight thread grub screws coming out but what´s to stop them disappearing into the oil jacket after a few heat cycles :)
Because 1/8” BSP is a little on the large size. I don’t have to do any R&D on this, it’s been done before with zero failures. The list of what I could have done is as long as your arm but this is what I did. Many men, many methods. If you’re considering doing yourself just do what you’re comfortable with.
@@ANDY5 Fair dinkum!!
Not sure if this is a good tip or not, but when I've had to put a set screw in to make a plug, I didn't thread all the way it. I've left some taper for the set screw to seat against which doubles up on the sealing from the loctite. Kind if fiddly getting the depth of tapping correct, but made me happy knowing the screws were locked down solid in the taper portion. Might be a good tip, might be a poor tip, just what I've done in the past and worked good for me. May not have worked in the ST cylinders though, might not have had enough depth in the hole to make it work.
It’s and excellent tip actually, and something I actually thought about while I was editing. I’m comfortable that the loctite and spiking will keep them in place.
Andy's Motorcycle Obsessions there always, no more nails. if you notice a oil dribble 😱now we’re did I put me coat. 👍😂
Great content, mate.
I really enjoy your videos, you skip the bs and share whats important, must be a southern thing... thats a lot of what should be unnecessary work... stoaked its coming togeather, can't wait untill it's assembled
Awesome Vid Andy
Nicely done mate, not sure I'd been quite so calm drilling into the cylinders lol 😂
It'll be nice to see the old girl back together 👍👍
I think your drill press has a rod knockin, Mr. Andy...
Yes, one of the motor bearings is grumbling
hope your friends ok,great vid
Cylinder barrel differences fascinating. Oil galleries on the air cooled motor.
Fins on a water cooled barrel. Who'da thunk it. Thanx.
Me? I'm just a simple Guzzista. Cam down the middle of the vee, tappets running direct in the block, pushrods, valve clearances locknut and adjuster out in the open, 1/2 an hour if you're handy, bish bosh, jobs a good'un..
ANDY DID YOU SAY 3 MM? ON THE OIL RING ? ONLY AS IF THAT IS BABD ENOUGH WOW ON BOTH CYLINDRES? WTF ? FANTASTIC VEDIO GREAT ENTERTAINMENT TONY
Nice work... I was scared for you when you was using the step drill! hahaha
Fair play, that's looks quite a job, thanks for another great video, good luck and I hope friend is ok ,The sheila
The old cheeks were clenching during the drilling process, oh ye of little faith, fair play Andy.
Top job buddy
cool well done Bro
Great video, thanks for sharing. Increasing displacement from 904cc to 944cc, and higher compression. Not worried about heat going back to oil cooling from water?
I’m not going “back” from water to oil. The 900SS is already oil/air cooled. I’m simply retaining the existing system.
How do you remove all the chips by the drilling from the pocktes inside the cylinders? Is air enough for that?
Just like a vw you can swap lots with other models , if you have the knowledge
Where is your drill press? Wow!
Good job. If you want to see real Italian craft, check out the chocolate gaskets and spaghetti O-rings in a recent Moto-Guzzi! Fall apart by looking at 'em. But don't the Italians have a way of making things look nice, work nicely when they do work, and generally deserve a place in our lives! Good health to you!
Are you jesus
I was expecting precision instruments and machines. You made it LOOK easy and then I thought , I could do that. Hummm, maybe not. More please.
Bet you haven't washed that T shirt yet😂
My friend here in the UK did a top end refresh on his 900SS last year and had exactly the same issue as you with the oil ring on the horizontal cylinder, something not quite right.
Well done 👌🏼
Hi great video so funny to watch allso really interesting really nice job andy keep up the great work
Would a tapered pipe thread or maybe only partially forming the threads with a tap and screwing the grub screw home to form the last thread or two be a bit more oil tight? Not saying what you've done will leak but might be a bit more resilient otherwise a very interesting mod.
Scroll down to Mini GP Racing’s comment
Shouldn’t you have to rebalance the crankshaft to the upgraded 944cc ? I have blown up my SS engine altering to a 940cc kit without balancing the crankshaft. I had to redo the whole job. + renewal of al bearings in the enige. The 940cc kit was really smoked...
I didn’t require it in this case.
A nice video that Andy, I’m impressed. You made that so easy. I’d love to see Delboy doing that. I’d can see it now reaching or the tube of No Nails🤣😂🤣. I’ve learned so much from this excellent video. Good luck on the heads👊
Great work & result thus far Andy! Keep it up & keep up the jokes! They make a great intro. If anyone gets offended, stuff em!
MAMILS middle age man in leather suit.
Oh, is that why my hydraulic brakes on my Mountain Bike are gripping the discs after being stored in a dampish environment, the brake fluid absorbs moisture? Even though it is a sealed system?
Maybe. Try watching this ua-cam.com/video/ngzMDggGirI/v-deo.html
It seems to me that there is nothing to make the oil circulate in the cylinder with that mod. Once the cylinder is full of oil the hole that was drilled into the gallery will basically be blocked and all the oil will just bypass it and go through the restrictor orifice into the head. Maybe I'm missing something.
Where normally the water union is located on the left side of the cylinder now there will be the plate from the 900ss cylinder which has a banjo bolt with a hose that goes to the generator cover to flow the oil back in the engine, the casting from both cylinders are the same so it will function as it was original. Trust me I did close to a 100 of these modifications
@@toinevandenbiggelaar6083 oh ok I thought the flow path was different. So the flow to the head is secondary to the main flow out the side of the cylinder?
Hi Andy,
Like you topic on the 900ss rebuilt with st2 cylinders. Question: do the 900ss heads just fit as is on the st2 cylinders? Thanks Joep
Yes, absolutely
Thanks! Very tempted to have a go at it also!
Hi Andy,
Speaking of modifications: why not modify a complete St2 engine and convert it to air/oil cooled including oil cooled heads? So deleting the water pump and plumbing the oil feed and return on the appropriate water inlets and outlets.
And possible change the oil jets to the required size beween head and cylinder?
Andy great job, I would like to ask you something, I have a 907ie, I’m restoring, my cylinders have a great chance of being in need of replacing or nikasiling them. Could I use the st2 cylinders with the 907 cylinder head without modification?
Hmmm, not sure mate. Bore and stroke are the same but I don’t know about the architecture.
@@ANDY5 could you have used the st2 cylinders, with the original 900ss cylinder head?
I did use the ST2 cylinders with the 900SS heads
Go with a new 18 mm end mill. More precise.
I didn’t want to spend $50 on something that I would only use once. The step drill is fine for this, as was proven.
Just weight it! take the digital scale and weight it! :D
I like your videos and the way you explain things. Although I couldn't help noticing that the mark on the cylinders is different than the marks on the pistons. I explain what I mean. On the previous videos I've noticed that the SS pistons they have a "C" marking on top. The ST2 cylinders though they have a "B" marking on them. That means different sizes, if I'm right. Are you going up on cc or down?
I'm not a mechanic by the way. So I might be very much wrong on what I comment.
Cheers
When they are machined they have to land within a plus or minus tolerance of the target size, the ‘B’ or ‘C’ let’s the guys on the assembly line know what cylinder to match it to so the correct clearance is achieved.The 900 cylinders are 92mm and the CC is 904. The ST2 cylinders are 94mm and the CC is 944, but the piston markings have no baring on that. They all have an ‘A’ (intake side) an ‘S’ (exhaust side) and the tolerance designation, the ‘B’ or ‘C’ Make sense?
@@ANDY5 so in other words you going up on cc. Sorry for being a pain. I'm just planning to change piston rings and change valve shims on my Monster 600 so I just watch every single video that has to do with this procedure. Double checking every thing since I could go very wrong and potentially destroy the engine
Yes I am, or more accurately have, gone up in CC.
But as I said the b and c markings you saw have nothing to do with that.
@@ANDY5 thank you Andy
Contact,, Ave would be proud.. oh this is Ken not Lauren
Andy I am not getting something, how come you drilled the side of the barrels and then put in a grub screw, stuff that bloody Demetria
You need to watch the whole thing mate, and stop skipping ahead.
Could you have had the barrels rebored or is this not an option?
G’day mate, wow you have had a binge watch haven’t you? It is an option to re bore and re Nikasil, but a very expensive option. This was a very cheap solution and, thankfully, it worked out great. Thanks for all the great comments. Andy.
@@ANDY5 I think you were really fortunate to find the ST2 barrels and pistons and the conversion to oil cooling was most interesting. The opportunity was definitely a no brainer. I have an 01 model so don’t have the external oil return lines but it may still be a way to go “big bore” at an acceptable cost.
Your paint job on the motor looked a real treat. Keep up the good work and keep safe.
Knowing your engineering background, i assumed you would be reaming out the holes, before you plug them
You have changed WATER to OIL.
I’ll be calling you Jesus from now on !
2.0
Very good vid Thumbs down make's no sense
No concerns about chips from drilling and tapping greeting into the oil?
Of course. I mentioned at one point that I needed to clean and blow them out. I did this mostly off camera as the video was already going to be long, there is some footage of me blowing it down. It’s well flushed. Any that may have been trapped that do find their way down will be stopped by the pre pump strainer and I will get them at the next oil change.
Are you sure the oil doesn't go the other direction in the top first?
It will take the path of least resistance and fill the chamber first. It will force its way to the head and rockers only because the pump volume exceeds the return volume from the chambers, otherwise it would never reach the top.