Bore limit

[Kitten Tooth]

I don't have a factory manual for a 1982 GS300L D model. I need the bore limit for the cylinders for that bike. Gotta hone the cylinders and replace the rings.


Thanks,
KT

[1978GS1000custom]

sometimes the only to find it is to find out what oversize ring sizes are available for that motor from a parts vendor and then you will have your answer. most of the time the part number stays the same with the stock (std) size or over size (+.010) listed after it. make sure you can buy the rings before you bore it

[1978GS1000custom]

almost forgot, i am not real sure of the size but someone here most likely will be along who does but, after about .020 oversize you will require a oversize piston also but don't quote me on that size it may be smaller or greater. thats one for someone like rapid ray or one of the other motor pros here.

[tkent02]

Are you just honing it for new rings or are you boring it out for bigger pistons?

[ramrod400]

If a persons just honing for new rings can you just use same size rings

[tkent02]

The honing just provides a rough surface to help wear the rings until they can seal, you are not actually increasing the size of the bore.

[Kitten Tooth]

Theres been water in the engine before i owned it. It needs honed to get rid of some light surface rust, but before that can be done, my mechanic wants the bore limit numbers before he takes it to the machine shop. I'm not boring it out or anything. Also, if anyone has A GS300L Shop manual that they wouldn't mind selling, LET ME KNOW PLEASE! I don't care what year it is, 82, 83, or 85. They all have the same engine specs.