DIY CB750K Oil Change and Compression Test
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- Опубліковано 5 тра 2017
- Today I'll show you the best way to change the oil in your 1st generation Honda CB750K.
This process is the same for all 1969-1978 SOHC CB750's.
Link to the oil filter that I used - amzn.to/2xY3rS2
Link to the 10-40 oil that I recommend - amzn.to/2y2HEZB (the oil I used was the Canadian Tire equivalent)
Link to the best resource for all things SOHC Honda CB750: www.sohc4.net/
Please Like, Subscribe and turn on notifications (SMASH THAT BELL!) if you want to see more vintage Honda how-to vids.
Also (VERY IMPORTANT) please please PLEASE feel free to critique today's vid as I am always looking to improve my video making skills.
THANKS FOR VISITING TODAY!!
Camera used - amzn.to/2sR3CcQ
My go-to zoom lens - amzn.to/2t3sXjk
The Wiiiide lens - amzn.to/2sNCIme
My favorite photography lens - amzn.to/2JtbYSm
My camera bag - amzn.to/2MgKPji
The tripod for in the garage - amzn.to/2y59QLq
The tripod for on the run - amzn.to/2sQsrpn
The head for the on the run tripod - amzn.to/2sPlhBE
The shotgun mic - amzn.to/2xZ0K2J
My voiceover mic - amzn.to/2JCqpiU
Voice recorder - amzn.to/2Jt6XcG
Polarizer Filter - amzn.to/2xY5K7E - Авто та транспорт
I was listening to you talk at the beginning of the video and thought “this guy sounds like he’s from NS”. Then I saw your license plate.
Although I now live in Southern Arizona, I’m from “The Valley” and I have family there.
I have acquired a 1976 CB750F Super Sport. It needs a lot of TLC.
Really like the video.
Please, please, please keep teaching me how to do things. I loved this video even though it's not even a little bit relatable to me. The air quote part at the beginning was amazing. So funny.
Krista Nelson - thanks Krista. I'll try my best!
Not a lot of cb750 k4 videos out there so I thank you very much for all these. I bought one as my first bike about a year ago and it needs a lot of love. Your content is very informative. Currently going to school at MMI (Motorcycle Mechanics Institute) here in Arizona. Your videos, along with my education, I should be able to nurse this baby back to life! Keep them coming!
Thx so much - have the same bike and your refresher (and reminder of the washer I was missing) was invaluable. Entertaining too!!
I love watching these. Nice and helpful to learn from someone else. ...mine is a 73. Doing a restoration on it, too. Incidentally, "mils" are not "millimeters" they are thousandths of an inch! There is an oil additive product called "restore" ...some guys on here reviewed it and said it improved their compression. Might reclaim that last psi with it. The other possibility is your compression really is perfect, and your compression gauge is off by that amount... I wouldn't normally think that, except that each cylinder's PSI is -identical- to the other... if they are going to fail some I'd expect a bit of variation between them... if there is none, I tend to think maybe another factor caused the reading to be low... in this case: the gauge, itself, is the common element between each reading.
Just bought this same year/model off of the ole interwebs and trailered it home...pretty good condition for a 50 year old bike, but apparently it doesn't run (haven't even tried starting it yet). Hopefully it's just dirty carbs or something simple, but I am excited to hear it fire up for the first time. These old Hondas are so cool!
At least you know the piston rings are wearing out at the same rate! I've used RESTORE's engine oil additive to return the cylinder pressure back to original values for both my cars (both over 220k miles). It's such a great product for older engines without actually replacing the hardware. before they ran super rough, and now it's very smooth and is even quieter in the valves and cams.
I just picked up a 77 CB750, very informative video, thank you! Subbed
Ah nice! You might find some upcoming videos helpful then... I recently bought a 75' BUT it had an engine, carbs and exhaust swapped in from a 77'! The thing works soooo good since I have it a full tune up. I've got all the video filmed forthat, I just need to get home (from vacation) and get it edited together. 👍😄
Came for the oil change tips, stayed for the entertainment! More CB videos please!
Thanks! More CB videos are definitely in the plans. Is there anything in particular that you'd like to know more about?
Clutch cable adjustment and brake fluid flush are a couple videos that would be great to see! Cheers from Alberta
Marek, I will put both of those items on the To-do list for videos in December or the new year!
Good Video with helpful info! love the way you showed the oil filter housing laid out in the order it goes together!
Hey Brennan. I'm glad you found it all helpful!
Very helpful! I'm build a 78 cb750k cafe and I just re did the carbs and got it running for the first time in 20+ years but before I try to do something I always look up diagrams or videos of how it comes apart or how its supposed to be put together the right way atleast.
For those not aware, this is an earlier model with the dry sump. Later models had the wet sump and the oil was drained from the block, not the external oil reservoir.
Once again,
You've done an amazing job with this video. Concise, well edited, you run through ALL the steps and name all the parts and brands necessary.
My oil light kept flickering with abiut 5 second intervals and last year when I bought my 75' cb750 SS I didn't change the oil and have no idea as to the condition of the filter.
You've shown me (and others) exactly how to do that. NOW if I can only remember to put the drain plug back in before pouring the new oil back in!
Lol! Yeah drain plugp might be kind of critical
@@Mike_Barker Hi Mike, what size was the magnetic oil drain plug? Fortnine gives me a sh*tload of options and I don't have a Clymer for this bike. IF you know off the top of your head great, if not I'll keep looking. CHeers mate.
@@Mike_Barker Forgoet my last, Just found everything I needed on vintage cb750! Wicked site. Thanks.
12 mm x m1.5
www.vintagecb750.com/products/4/engine/74/oil-filters-drain-plugs-oil-pump-gauges
Scroll down and you'll see the exact one I bought
Thanks for making these videos.......... so informative
You're most welcome. It's been hard to find time lately to make more, but there are more coming!
PS: used an airplane barf bag to collect the oil from the upper reservoir w/o removing the brake pedal connection.
Excellent content... Just subscribed!
Thank you so much! I hope you enjoy the crazy ride on this channel. 😀
I like your videos. thank you and you have a pleasant sense of humor.. lol I use the same stuff to catch oil, and look for clean spots on my filthy rags. lol
Hahahah! I do try to find the cleanest of clean spots on those filthy rags, but I'd be totally lying if I told people I used a brand new rag everytime I checked the oil.
Would of really liked if you checked the oil. Something that's driving me nuts is trying to figure out if I have to much oil. Thanks for the vid
Some nice 5S applications here
Thanks man! It could use a lot more though! lol
I bought a CB500 and loved it so much that I decided to get a CB750 and went right out and bought a 4 into 1 Kerker exhaust.....
However I was 19 and I don't remember ever changing the oil ....
Ah the stupidity of youth 🤣
I do my compression test cold, no burns, try it on #1 cyl. when cold. You can check the compression every 8,000 to 16,000 miles or so. It's way easier than physically checking the valve clearance on each valve. When you see the pressure drop, then check the valves.
I would do a valve clearance check on #1 cylinder (easy to access) after a cold comp. test just for my own info and it establishes a baseline for your records too.
Really sweet bike btw.
PS if 170 is the callout then I'd check the clearance.
It's about time for me to re-check the valve clearances anyway. Thanks for the info Steven! And thanks for the compliments on the bike too!
nice video! could you tell me how far does the filter cover have to be pulled out of the engine for it to be taken off after you remove the screw holding it? the exhaust headers on my CB are right against the filter and I'm wondering if I will have to remove the exhaust in order to take off the filter cover.
also is that a copper washer on the oil drain bolt/plug?
Hey dude, the cover will need to come off at least the height of the filter. It's about 2" but in all honesty, it'll be a lot easier if you remove the exhaust and then take the cover off completely. I hope that answers your question.
Thanks for the quick reply! and what oil exactly did you use? and is it synthetic, semi synthetic or petroleum ? I heard these bikes shouldn't run fully synthetic
I use the Castrol 10-40 Motorcycle oil. If I used synthetic it would probably leak out through all the worn gaskets just as fast as I could pour the oil in! 🤣😂
Seriously though, I'd be tempted to run synthetic if/when I totally rebuild the engine. For an old engine though, just use the regular liquid dinosaurs.
Mike since you live up there in Canada would you consider on buying a snowmobile and posting some videos?
Of course! I'm a bit swamped with other projects at the moment but a sled would be rad.
How important is the spring to be put back in the filter housing? My bike didnt have one. Issue?
I've had a couple of bikes pass through my shop that have been missing that spring. While it seems to have caused no issues, I'm always a bit weary. A new spring always goes back in. Honda designed it that way for a reason!
I ordered from CB750 it's been over 3 weeks and still have not got my parts
The Green Bastard - Parts Unknown!!! #tpb #jrockbaby #conky
Could you add a link to where you got your magnetic oil plug?
Hey Doug. Here's the link! www.vintagecb750.com/products/4/engine/74/oil-filters-o-rings-drain-plugs-oil-pump-lubrication
@@Mike_Barker Thanks!
Hi Mike, awesome video. I noticed that the exhaust sounds like it is rusted. I picked up a 1978 honda cb550 that has the original 4 into 4 exhaust, but its completely rotted out. Do you think it affects the health of the engine? I read that the airflow might make the engine run lean and hence hot, and can result in valves being fried. how do these bikes with rusted exhausts run? thanks
I'm not 100% sure that rust has a sound... Those pipes were solid, but we're the incorrect ones for that year.
Rusty exhaust can affect performance but more so if there are big leaks in the system.
@@Mike_Barker there are holes in the mufflers that would fit my hand. There’s no leak near the headers though. Do you recommend changing the exhaust system?
@@Mike_Barker I don’t care as much about performance as I do about the health of the engine.
The engine is likely more than fine. People have been throwing higher flowing exhaust on these bikes for 50 years. I'm sure your engine will be fine.
As with all old Hondas you should check the condition of your plugs to help verify that every cylinder is burning correctly. Look for that nice tan Brown colour. White plugs will tell you that you have a lean condition.
@@Mike_Barker thank you very much Mike! Let me know if you are ever in Toronto! Couldn't help but notice your nova Scotia plates! If it's in summer, we could also go for a spin
Mike, when are you coming to LA?
No plans at the moment but I've actually spent some time in El Segundo...
@@Mike_Barker Let me know next time you are here.
Do you need to run a lead additive in the fuel in this bike?
Definitely not!
What's the point of replacing the drain bolt with a magnetic drain bolt?
To catch and possible metal fines... Or shavings... Or chunks! Chances are you have waaaay bigger problems if you start finding shavings or chunks in your oil though!!
@@Mike_Barker the magnetic drain bolt came with a washer. Do you have to change that washer with every oil change?
I would. You can buy a few for very cheap off Amazon or from your local parts store.
@@Mike_Barker thank you. Just found your channel and I am learning lots 👍
How do you check if there’s too much oil on your 1993 cb750
I'm not at all familiar with the newer cb750's. I would think it would have a dipstick of some kind! Or a sight glass on the side of the engine case.
@@Mike_Barker thank you Mike!
Is oil change on CB750 F different?
It's the same (as long as it's a single overhead cam model).
1978 cb750F. Thanks for posting great stuff :)
How about on a '72 CB500?
Crank it till the gauge stops climbing.
Brother I would absolutely go with a k&n filter and not a fram, I have heard some really bad shit about Fram filters and I have seen it with my own two eyes that they are absolute pieces of garbage, there is a video about filters on UA-cam and they disassemble a whole bunch of them and compare them with good filters, Fram is the lowest quality of the low, brother I would not put that filter in my Honda, just sayin...