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Well done guys, I'm looking forward to seeing your progress! The good thing about the legendary CB750 engine is that it is dead simple to work on, and to bring back to "as new" condition. I've recently (in the last 12 months) built 2 engines, one stocker, and one "competition", and so all I reckon you'll need parts wise for a "rebuild" is the following:Full gasket set (CycleX, $59.00)Set of Piston Rings (Rusty Riders $30.00)Cylinder Hone (buy the tool to fit your cordless drill, around $10.00)Heavy Duty Tsubaki Cam Chain (Z1 Enterprises $28.00)OEM cam chain tensioner, wheel, and guide (Z1 Enterprises $61.00) Engine seal set ($20.00 from Rusty Riders)New OEM Primary Chains (Terry Quail, $70.00 per set)New NGK Spark Plugs ($10.00 from your nearest auto parts store)New points ($10.00 from Rusty Riders) Engine Enamel ($10.00 from your nearest auto parts store) There's probably one or two items that I've forgotten, but as you can see, for around 300 bucks you can do a full "rebuild" that a shop wouldn't do for under 1000 bucks. Spend the other 700 on good quality tools and better quality booze, and give yourselves a pat on the back! Cheers, Terry.
Before you run out and buy a hone...Clean cylinder and take it to an engine shop, and get them to measure with a bore guage..if it has any taper, it should probably be bored. If you dont, at least you know your rings will not last forever..And before you start figuring out what it should cost..see what you have first... nobody has mentioned a valve job yet...Proceed..
Guys, let me repeat one very important tip - Do not try to remove those cylinder studs! It takes heat and breaking one is not a good thing. They have an entirely different thread/clearance than do bolts/nuts elsewhere on the engine and they suffer from corrosion of did-similar metals. If you are so inclined - talk with someone first.We'll be waiting on the questions - Oh, please ask before breaking You won't regret this.Gordon