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I have never seen or had a problem with that spring ever even in my drag bikes. It is a very soft spring from the factory, its only job is to keep that shift lever in contact with the shift drum. There is no outward force or large amounts of movement with that part that it should be able to pop...

Its going to be really hard to diagnose without hearing it. Anything from bearings to wrist pins to cam bearing clearance to the transmission or clutch or loose cam chain or loose primary chains can all make noise when decelerating. Maybe check valve clearances and timing chain tension first...

Oil looks really black for just being rebuilt....? There is no oil in that area so it has to be leaking from the valve stem seals or past piston rings if its in the exhaust ports or the valve cover is leaking and trailing down the pipe. If you dont have an external leak it about has to be...

Well that steering stem stamp verifies that it is not a 1981, the stamped number doesnt match the riveted tag. The stem number and engine number are both correct for a 1978 f model.

Just learned that Jay at APE just passed. He was big into drag racing and more importantly for us started out and continued to support work on the sohc cb750. I have bought many parts and machine work from APE and had some interesting text messages with Jay over the years about the 750 motor...

I am going to close this thread as this has gotten out of hand.

thank you

thats just an early model head oil restrictor... whatever the original poster has is not from the 750 engine.

I have never seen that piece in a sohc 750 motor. The only restrictors in the oil system are the two in the head and that is definitely not one of them.

take the seat and tank off so we can look at the frame, it will be easy to tell if its a sohc frame by the tubes under the tank. will be easy to see if there has been any modifications done. Also what is the engine serial number.... The frame serial number should also be stamp into the neck...

This post was 6 years old before it was resurrected with no real reason. I'll close the thread if nothing useful is going to be contributed.

snapping the throttle just sitting still not under a load means nothing and has no purpose, under a load is all that matters really. without an accelerator pump will make it hard to get all the hesitation out of it just snapping the throttle. As I said above use the choke to get your jetting...

K7 should have key hole carbs but thats beside the point I guess. I have never had issues getting round tops to work with pods. when running...get to where it bogs and start closing the choke, if it picks up and runs better it is lean in that area, if it gets worse it is rich. The round tops...

Non of the cylinder studs are that long in the sohc. longest are little over 7.5" overall

sounds like the accelerator pump not working to me

Not all K0 are sandcast. The non sand cast KO are the highest horsepower K bike. The 77 and 78 F models are the highest horsepower sohc overall. The early K's are most desirable. For the most part the k bikes in all the years are basically the same except for a couple cosmetic changes and...

im in

Im in

Get a factory honda manual, I have seen wrong information in the Clymer and Hayes manuals

Yes honda still has them, it is a very thin washer, all it does is keeps the spring from rubbing into the rubber on the oil filter element, I have seen and have run them without the washer if I lost or didnt have one.

you have to enter in the actual thread for the drawing in order to be entered. There is a new one every month so be sure to enter in the correct one

There is really no reason, most of the f parts would take some work to swap over to the k bike.

cut one down

Actually your idle voltage is at a discharge, battery voltage at rest should be 12.6 volts in a good battery so at 12.21 your battery is in a state of discharge.....and this is somewhat typical of the 750. high end charging is 14.5 to 15volts so yours is a bit high but this can change a bit...

in it again

Kenny is a great guy and I buy almost all of my engine stuff from them.

Well I guess he has options now ;)

He also asked what year he should get without a lot of wring so I gave an option...

Well 2000 was the last year of the carbureted cbr600 after that it was efi as the cbr600f4i. Any of the cbr engines are going to have electronic ignition and will require the wiring and the ignition module. The engine cylinders lean forward way more than the old 750 did so its going to look...

Well the spec output of the 750 is only 13 amps max, at idle the 750 doesnt output enough to even keep the battery charged with the headlight on. I think you will easily use more than than the 750 can supply with all the stuff you are wanting to run. Cycle x does have upgraded 20 amp charging...