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- - G1 bore (https://www.buggiesgonewild.com/showthread.php?t=28217)

JDC	01-18-2010 06:27 PM

G1 bore

Does anyone know the standard bore size of a G1.

smallblock450sl

01-18-2010 06:54 PM

Re: G1 bore

Quote:

Originally Posted by JDC (Post 342872)

Does anyone know the standard bore size of a G1.

Standard is 68.00-68.02mm(2.677-2.678in) wear limit 68.05mm(2.679 in).

JDC	01-18-2010 07:00 PM

Re: G1 bore

Thats not good My cyl. is at 69.2 and the piston is 68.73 do you think the .100 would work ? that piston should be 69mm right.

smallblock450sl

01-18-2010 08:34 PM

Re: G1 bore

I'm at a loss. I'm suposed to know this, guess I'm getting older and can't remember all the part numbers and spec's. Yamaha sells .25/.50/.75/1.00 oversized piston and rings for G1's and I can not find any spec's for you in the service manual, sorry. You can buy a cylinder kit, "cylinder/piston/rings/pin/clips from many site sponsor's. Did you clean the top of the piston and get any identifiying numbers. Wish I could have been more help.

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