Trkdrvr1376
CB750 Enthusiast
Good work what else can be said
What did you do to your cb750 today???
- Thread starter ticktockcycles89
- Start date
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- Tags
- sohc
StorminDakota
CB750 Member
Upgraded my starter clutch with the R6 gear a while back. Started better and ran great, and then I noticed one of the bearings had fallen out on my work bench. So I popped off the side cover and messed with the gear and bearing and now it sounds like a power drill and doesn't seem to be turning the engine and may be slipping. Everything else looked good, not missing teeth, so I'm going to assume its the gear rotor issue. Decided to order another gear, and I'll get back at it later this week.
StorminDakota
CB750 Member
Start clutch bearing fixed, now cranks and runs. Got a minor soft popping in the right side exhaust that I need to investigate. Going to drain the tank and put fresh gas in and see if that sorts it. The R6 gear upgrade on the starter definitely makes it sound like an adult motorcycle now when I hit the starter.
Loki
CB750 Addict
After finally getting my engine back together and in to the frame have started to sort out the wiring harness, routing it around the frame ready to connect up the various components in readiness for the first turn over to get the oil circulating ready for the first start.
Loki
Loki
kirky
CB750 Addict
well i don't know how this happened but i put diesel in the carbs for winter to stop this new ethanol crap gumming up the jets , before this experiment i always just drained the carbs until the warmer weather arrived. when i came to start her after draining the carbs and running petrol through them she fired up within 5 seconds on all 4 . before this every year i tried to start her she would struggle and fire on 2 then 3 and eventually 4 after nearly burning out the starter and flattening the battery. 
Nunya Bidnes
CB750 Member
80 CB750K. Drained tank and bowls, refill with fresh non ethanol. warmed up and found #1 running cold. I confirmed spark with inline tester. I assume my next step s a compression test. Will read plugs. Any thoughts?
Nunya Bidnes
CB750 Member
Sorry, a little background, bike is new to me was ridden 15 miles to my house. Poor idle was improved with fresh full tank.
Nunya Bidnes
CB750 Member
Replying to my own thread, Idle has continued to improve. Compression, cool motor, dry Throttle wide open, Pretty consistent at 125 -130 psi. At first exhaust bend I used an infrared thermometer and Found #1 temp appx. 130f while 2&3 are 180f (ish), and #4 at 210f plus. Please s'plain it to me? Hot =Lean? Is it the proper moment to ask about "syncing"? If so , couldja point me to a sticky about carb sync that can be understood? Hint; the Doctor said that I only have two brain cells, and that one was chasing the other with a hatchet. Please and thank you.
Nunya Bidnes
CB750 Member
Trkdrvr1376
CB750 Enthusiast
HelloSay Hello to my Little Friend.Sorry I thought I had Started a thread. I hope no one toes were stepped on.
Trkdrvr1376
CB750 Enthusiast
I bought a second bike (82 750c). Basically a donor bike . Found it on Craigslist (150.00) and the seller delivered it for free! The good =
4 into 4 exhaust seems in good condition. My
First bike left side has a leak.
Tank is decent
Front and rear fenders better condition than my 1st bike .
Seat in real good shape. The bad no carbs or air box. No idea about motor.
No side covers. I will pull parts I need and put it on Craigslist for free and maybe help someone else who could use it
4 into 4 exhaust seems in good condition. My
First bike left side has a leak.
Tank is decent
Front and rear fenders better condition than my 1st bike .
Seat in real good shape. The bad no carbs or air box. No idea about motor.
No side covers. I will pull parts I need and put it on Craigslist for free and maybe help someone else who could use it
