This Is How We NOTCH The Bores On A Big Block MOPAR V8!
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- Опубліковано 16 тра 2024
- Building custom engines requires custom machining! In this case, the Trick Flow Powerport 240 cylinder heads we're using on this build are designed for use with 4.320" bore size and up, but our bore size is 4.255". As such, we have to notch the top of the cylinder bores to gain adequate valve clearance!
Check out the entire build series: • The Story Of @ScannerD...
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This is what I enjoy the most. When your presented a problem, you find the solution. And your quality of craftsmanship to look ahead if someone down the road put a radical high lift cam in, they would still have clearance.
Some friends of mine from 30+ years ago in high school that loved the “hot rod” scene said they would never need math as they got older. This video is proof what they blew their motors.😂
(Why)they blew up their engines .... Motor is electric 💡⚡
@@jeanlawson9133 Somebody tell the DMV.
Motor and engine are interchangeable.
@@jeanlawson9133 ford *motor* company. GM- General *Motors* . Mopar- an abbreviation for *motor* and parts. What are you on about ???
@@jeanlawson9133You might want to inform General Motors and Ford Motor Co. of that fact.
Great work! Having ground millions of valves finish grind, facing and under cuts I enjoy this type of content. Shop is looking great cleaning guy is working out I see. Take care
Love the CAD design work aspect of this!
Your dedication to always be better is inspiring. So much so, I'm going to get off my ass and go be productive today. Seriously. Happy Sunday brother, thank you for the great content first thing this morning!
Sure beats using a grinder like we did in the 60’s. Yea smart guys who went to college and can demonstrate the “proper “ way! Always love your content! Your parents must be so proud! Your dad is always just so chill ! 👍👍👍👍
He be chilling.
I don't think college has alot to do with it!! They want to do their best!!
Looks great. That’s everything I had done to build r 413 to 478 ci. R combo was 4.25 bore x 4.25 stroke with cast Indy heads. Absolutely a torque monster!!!
Thirsty torque monster.
Fuel makes power. Lots of power needs lots of fuel.
I have seen this done with a large tapered cartridge roll by hand on a big block Chevy! They also used a boring bar that mounted in the adjacent cyl. that's the way they used to do it and never had any problems! So Nick I think your good! This is the precise way, the way JAMSI does everything!! NiiiiCE!👍👍
Looks sick! Danner's got a sweet motor comin' his way...
Amen!
Super impressed with your continued commitment to doing the job right the first time!
Looks Nice The exhausts were factory plunge notched on the 413 Max Wedge I was wrench on a super stocker. The MW had a 1.88 ex valve where standard 413 street wedge and street wedge are 4.750
The best easy answer for a 413 is 1.81 without extensive port work think radius seat and tulip head and no back cut on the exhaust
The stock MOPAR is a true wedge with the plugs way down low and even with wedge heads most pistons are too far down the hole to give any quench
They detonate or pre ignition on the side opposite the plug 60 year old tech here.
The 413 MW heads and large dome pistons blocked the flame front to the valley side which required flame shots cut into the TRW pistons and blending the heads,
Wish we had those head back then. We used the Stainless Steel truck gaskets to scribe the heads and block still use them on 400/440. get tight quench
WE also had the FIRST and for a long time ONLY ISKY cam made for a Mopar size lifter- great cam as was the later Racer Brown Very consistent,, later made a great bracket cam
obsolete then. Think what computers were like in 62
I was on a WW2 era sub tender that had mills and lathes from the 40s still in operation, no computers on those babies, all dials and mics.
Paul Danner is a lucky Man!
❤ I truly am! To get this kind of quality work is amazing, but to be able to watch the process on film is priceless. Worth every penny I'm paying and then some!
Coming out great!! Can’t wait for this all come together and hear this monster run!!!
Nice work! Thanks for sharing
Awesome work, love this stuff.
That's some big notches. Great work!
Very nice work done on the block....good content and thanks
Nice touch and a great method. 👍
Great work!!!
Very impressed with your commitment. Block looks fantastic. Can’t wait to see the assembly
I love this technical content, I could definitely tell you like the machining side of building engines and you totally nerd out on it, which is awesome! Keep it coming!
That looks great
Fantastic work! Super impressed with the attention to detail!
Nice work as always.
This looks as if it always needed to be like that. Perfect work yet again!
Another fantastic episode!!! You always go the extra mile for your customer!❤️
With large bores you have to be careful with squared notches in the combustion area. Sometimes it causes harmonics that will create preignition. We used to use barrel sanders so to create a smooth tapered notch. You will definitely want to at least radius the bottom of those notches.
I was just gonna ask about this. Figured it may have a negative effect on the flow somehow. This way is more accurate than a buzz grinder or whatever for the depth across all 8, but I agree the bottom should be radiused. These guys are good, but I hope they see this. As a machinist, not even the engine builder kind, I agree. 👍
@@MrPauls-vr4mj The plan was never to leave them w/ the sharp edges like they are here, but wanted to wait until that last ~.010" was taken out of the bores in the cylinder hone before they were finished out. It's all documented in the video that will be out in another few weeks! Thanks for the comment!
@@JAMSIONLINE Thanks for your reply. I kinda figured you would address it in a future video. I've been a Cnc machinist for almost 30 yrs. I know skilled hands. I've been watching your content for awhile. You are very good at what you do and meant no disrespect. It's so satisfying watching people doing their job well.
@@MrPauls-vr4mj I could not tell the shape of the tool bit but a great start
@@JAMSIONLINE thanks for the affirmation you said that in the video but some of us were concerned about flow and sharp edges
Thanks for sharing 👍 It's nice to see that I'm not the only one who makes a mess with Dycom.
Wow ! Nice job ! Lots of math ! Thanks for sharing !
Growing up in an automotive machine shop, I absolutely loved this video. I did have to go back and watch it twice because I missed some of the original set up. Good job guys.
you have an awesome looking shop. Very presentable. Thanks
Man I love to see others use CAD as a measurement tool, nice work!
That's awesome!
Always great videos!!!!
Im a chevy stroker person myself, however its going to be nice when fire up time happens here.. really excellent videos of this build..
I think it's awesome that you can do that .
I imagine that this bulid will be strong with safe clearance.
Nice work.
At about 12:25, how about "not bad for a couple of farmers" Mr.Jim? Nice job guys. Your work is always spot on.
Looks great. Hopefully it runs well, I am sure it will.
I think your explanation was spot on. It made sense to me. Nice. I wonder if the geniuses on Power Nation would understand any of this? Edit: You and your Dad don’t give yourselves enough credit. Your work is impeccable. Thank you for the opportunity to watch you work.
Are you aware the Pat Topolinski worked for Greg Anderson at KB Racing? I don't know if he's a "genius", but he knows more about engine building than you or I ever will.
I learned mechics under a shade tree.. mostly swapping motors and transmission and things. Watching your videos I realized just how much about motors I don't know.. looks to be artwork. Your skills are amazing.
Awesome job, nice clean valve reliefs will let it breath just a little bit better. I have cleaned up reliefs like that with a super fine sanding roll to not damage rings while installing the pistons. Works great!
Hey, when the cleaning guy gives his approval, you know you've done good😎👍
Awesome job as always! Love the little peek into Cad. I did this by hand with a carbide for my Big Block Chevy as the heads overhang the bores. I would have liked to see more of a taper into the bore from a performance perspective but your set up is neat. I think i cut about a 40* making sure to stay above the top ring
I know just enough about engine building to get myself into trouble 😂😂😂 .. but I love watching this channel always good to learn and see something new
Looking awesome guys!!
I love doing custom machine work! I have a Bridgeport and a Clausing 13X40 80’s style lathe in bran new condition. I scored a good deal. Anyway I just rebuilt my perfectly good 575HP small black because I’m putting an F1R pro charger on it. I added a keyway on my crank and balancer myself. For me to be able to do that stuff myself makes me happy lol. I made 13 gears for my old South Bend lathe too. Who woulda thought I could ever make gears at home too! I bought a $350 dividing head from Amazon that works great! I have a small fortune in Chinese machine tools that have treated me good. I can’t wait to see what machine you roll into your shop next!! Nice work as usual!
Nice work; also your thoughts on how you enjoy the machining part more were good. I don't know about everyone else, but I think sharing things like that certainly adds personality to the video.
Great Work!
It is great when you are given the pdf to insert into CAD. A scanner can also be used to produce an image to insert when dealing with flat surfaces such as the gasket or even the head itself.
I can't wait for Dan to thrash some tyre's with this motor 👍
Rock on...!
Bonus Notches 👍
I like doing those with a half round file.... mark head gasket, mark the depth...finish with a large diameter sanding roll....i don't have a fancy machine like that... Great Job guys...
That is a nicely prepped block.
"Well...We're waiting"! Lol 🤣
At roughly 5 minutes 40 in the statement is made. "I know it's over complicated."
Let me assure you it is not.
In fact, it is greatly appreciated.
Your observations and explanations are easy to understand.
I am no machinist or engine builder. Thank you.
Its crazy how small the head ports are for an engine that size. Modern engines are so much more efficient.
no problem with smaller heads on this jeep, truck, motorhome etc
Thank you nic great video. I see this video is about 30 minutes long. In actuality how long did it take to do this modification to the block. From planning to finished machining.
This series is awesome but has made me very nervous. I have a stock 1969 Lincoln 460 I wanna rebuild. I've been a mechanic for 15 years but have zero experience using machine shops. After seeing the incredible amount of work and attention to detail that is required I fear my build is gonna be very expensive! Great work you guys do!
The big block chevy blocks came notched from the factory. The greatest benefit will come from better breathing through the heads.
back in my stone age we would take an old valve and braze a cutting bit to the face of the valve, no need for cad, just a drill motor
I like it. Gets the angle spot on too.
Yep, I have used the same idea for fly cutting pistons for additional clearance for big cams.
@@bigal878 like the Isky tool, watch for that top ring
Hot Rod mag in 1962 on their 413 did the same thing
That is genius! My step dad notched a block with a stone chucked into a drill. I tried telling him there had to be a better way. Your method would’ve worked perfectly. He ended up ruining that block. It was the original 273 out of his 64 barracuda. He tried putting 340 heads with 2.02/1.60 valves (which is why he needed notches).
God Bless and good morning Grace family, good things come to those who wait.........😊
Another great video. I sure wish y’all were on the East Coast.
That block is looking real racy! With the bushed lifter bores and notched cylinders! Nice looking!
This would actually be better done by hand with cartridge rolls. Any sharp corners are prone to detonation
A little math, alot of patience, sandwiched with experience and some dead reckoning = Nailed It!
Have you calculated how much compression you lost while doing this procedure? Hahahahaha ( in sardonic laughter)
A bit.
@@jimbob8969 correct answer
I did this on a '68 Mini engine - 998cc block, with a heavily modified 1275 head - the exhaust valves overhung the bore by a good 0.090" - so, we laid a 1275 head gasket on the pre-blued block, then using a die grinder with a carbide cutter - hand cut the pockets.
I radiused all the sharp edges using a jewellers file and then polished all the surfaces.
That little engine made about 150hp @ Flywheel - not bad for a little engine that made 20hp from the factory!
(yes, it had a turbo, blow through MG Metro carb and some serious ignition!)
The 998cc A Series made 40bhp stock.
The 1275 made 65bhp with twin carbs. Both had enormous capacity for porting and tuning.
@@davidelliott5843 about 21@wheels from a standard 998.
Can moment carry the valves into the cylinder bores more than the mechanical contact with the cam shafts? Thanks
That's called valve float, and yes "technically" it could, but that's why they're adding fudge factor and controlling the valve with quality springs
would Love to see the flow and swirl change
i love the vicarious experience you provide. two questions, what about the flat part of the head hanging out over the cylinder under the spark plug and how much cr is lost with the grinding ? ty
Nice job. Twenty years ago your Dad would have used a pencil, paper, calculator and some modeling clay and got the same result im sure but its nice to see the the math and theory how you arrived at the result
100 years ago I would have been a blacksmith shoeing horses to make them faster. The Cleaning Guy.
Well you've got Clearance, Clarence and you now know your Vector, Victor!
I would have been tempted to put an angle on the cutter and taking the inside as the depth, would have made the chamfer at the bottom equal and easier ring insertion.
The 906 heads with 2.14 and 1.88 valves needed cylinder bore notches when used on a 383. That was a waay long ago mod, at least Direct Connection came out with 1.81 exhaust valves.
So true stock175 valves flowed better than the 1.88 without head grinding. I do not think I ever put them in a 413 and they do not help a383. remember these old heads do not have hard seats and sunk valves really suck
How does this affect the compression ratio?
The Max Wedge engines had valve reliefs cut for the intakes.
Are you on fusion 360 with the canvas gasket
Could you do a video on how you cut your cutters
Tall lifter bores look nice Tall lifters allow shorter/ shifter pushrods MOPAR requires stiff pushrods
id you say what your valve sizes are/ stock valve placement? how far down are your top rings (edit done at 8:50) hint to other builders check your valve notches in the pistons to the top ring and ring height for any notches After market pistons may have higher toprings (or lower for blower or nitrous YMMV Measure twice cut once
On the intake go out to the gasket for the blend consider the notch as an extension of the port as to flow, radius so no sharp edges top of the bore In addition to the gasket sit the head on the block and scribe and compare Use the flow path in addition to the valve lift
Fudge factor?? think valve float or lifter pump up WE used valve angle on the Stage III 426- great to follow the port flow, watch the down side of cut If you do not go out to the gasket the flow still hits more on the top of the sleeve/ bore which causes turbulence if you wanted swirl
It sounds like you were thinking what I was. Simple clearance is not the point. You want to un shroud the flow path at the area of the valve closest to the cylinder wall so the valve can flow better.
I used to work at cometic gasket.
Great work ... that came out perfect.
What is your CAD system?
Fusion 360
Very cool! 😃👍! I've never seen this done before but it makes sense. I hope the swirl or squish flow is ok still! Is the machining above the top ring level? Do you round off any of the machining? Is this a sleeved engine, & if not how much meat is still left to the water jacket? Might have to add a c.c. or 2 to its capacity now huh?
Sorry all the questions I'm just a fascinated hack that loves what youse do!
asking for knowledge. why didn't you cut the valve reliefs with the angle of the valve instead of the angle of the deck?
Could this be the most exotic 413 block ever created? We've used a few sets of the 240 and 270 Trick Flows, pretty easy to hit 600 HP on a street combo.
The bores have been notched, but will the head gasket clear once the heads installed??
Great vid. On the red machine that cut the grooves, did u change the shaft? It looks smalller. Thanks
There are different spindles for different diameter ranges!
Aha. So my eyes deceived. Thanks
What would you charge for this custom grind work on top of the normal engine block work?
Nice work! I would be concerned about the bottom of the cut creating a hot spot though. Perhaps a chamfer cut would have been better? Thinking out loud.
Did i miss a video? I dont remember seeing the finish on the inline 6 cylinder chevy.
Another great video. Thank you! BTW, where do you get your safety glasses? They look nice!
Thanks! And they're from Heat Wave Visual! Super nice! If you buy a pair, use code JAMSI10 for a little discount :)
🙌
Will carbon build up and eventually hit the valve?
Can you calculate/speculate what this procedure does for compression points? Would you say the drop is negligible?
I was thinking the same thing. Probably not much, but has to have an impact.
Hmm... I think it's not that bad. Decking the cylinder surface has more impact than this, so it wouldn't be much to notice the difference.
Ya I'd have to agree, the tiny bit of static compression loss from cutting a tiny bit of material out of the bore for relief is probably not even quantifiable by the old "calibrated ass cheeks" (that's butt in driver's seat for anyone who didn't get that lol). Generally the larger the displacement the less a very few decimal points worth of compression from something like a relief cut really matters. There's definitely more power to lose from other things like shrouding than in losing a tiny bit of compression from relief cutting (to point of course).
@@Drmcclung yeah, I'm not saying "oh! but they didn't address the drop in compression!". I'm simply curious if they've wondered about the final figures given all the data they have shared. I asked if it's negligible redundantly, perhaps. I know that it is. I'm more curious if perhaps the total figures could be equated to ”removing this amount of material in this cylinder bank is the same as decking the the block at .00X thousandths.." .
Does that change the combustion chamber volume by much?
Can this be done with a Chevy 305 small block in order to use heads with 2.02 1.60 valves?
You may have said, but how deep can you notch them before the piston rings come up to the notch?" Or what is the measurement between the bottom of the notch and the top ring on the piston when it's up?
Notification squad Have a great weekend!🔥🔥🔥
I was just wondering why you went off of the center of the boar and cut that big radius instead of going off the center of the valve and just adding 50,000 to the radius. I understand it would be harder to line up. Just asking love your channel. God bless you and your family.
I remember back when I was coming out of high school , you could buy a new 413 long block for around 500 bucks.The factory was dumping them .