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2024/10/29 15:41:36
Thesmallenginehobbyist76

Rings

When deciding whether a engine needs bored or just rings, what is the maximum gap between the end of the rings inside the cylinder on a 99cc Honda?
5 comments Leave a comment
SRTsFZ6
As we don't know if this is a 2 or 4 stroke engine, model #, type- weed-eater, generator, outboard, etc, it'd probably be best to purchase / obtain the shop manual for that particular engine and check spec's there....
 
.
2024/10/30 09:51:54
SRTsFZ6
If just the rings are worn, no cylinder damage, you may not need to bore the cylinder.
 
A new set of rings (if the old ones are out of spec) may bring you back into spec.
 
.
2024/10/30 09:54:57
Thesmallenginehobbyist76
The cylinder is not damaged. This is a 4 stroke dirtbike engine. The model is 1985 xr100r. Thanks 
2024/11/04 10:30:54
SRTsFZ6
A quick search:
 
https://www.scribd.com/document/397543184/9495510-Honda-Xr80r-Xr100r-Service-Repair-Manual-1985-1997-Xr80-Xr100-1
 
 
 
.012" -.015"

    Ring end gap:.012" -.015" Valve clearance: Intake:.002" Exhaust:.003" Piston to head clearance:.040" 

 
 
 
2024/11/04 13:27:06
Thesmallenginehobbyist76
Thank you!
2024/11/04 14:55:41

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