What size piston rings do you use...

[Larry D]

The bore size is 67 mm on the second generation 750 engine. As for rings, $20 per set is not bad as far as Suzuki rings go. Sure adds up quick doesn't it?

My calculator broke a long time ago for the 750..........

[hikermikem]

Hey Larry,

You might need one of these too: http://www.enginehones.com/258320ao.html

I bought mine from these guys & this was about the best price I could find. If you contact them directly the shipping price will be around $5, instead of the web displayed price.

Good luck.

[Texasgs]

re

Using over sized rings will increase drag on the cylinders & rings causing increased wear & engine heat. The LAST thing you want to do is INCREASE ring tension. If they were .005 of an INCH over sized that would be ok for a file fit as that's the way they are designed in a file fit application. I file fit the rings on every motor I build & would NEVER use a .5 MM over ring set on a standard piston. Ray.


** Nessism Is correct below! I corrected the above extra zero that was there. Ray.

Agreed. An over sized ring isn't perfectly round when filed to fit in a smaller cylinder. I don't want to step on any toes, but this is something you should NEVER do. There are rings that are intended to filed, but they have extra material and will be perfectly round when compressed, and filed correctly.

[oshanac]

HIKERMIKEM-Do you just use a hand drill (being careful to be square to the bore) for that hone? Is it something a mechanically sound guy can do or is this process best left to a machine shop?

I just bought a used block off eBay, and was going to ask the same ring question (sorry to hijack). Is there something else to the block that needs to be done or checked by a machinest before I fit the rings? Sorry again to jack' the thread-I love this site. Everyone here is like a brother. Thank you so much for your time guys.

[oshanac]

I did some digging on their site. They do recommend a hand drill. Anyone ever do this to prep for rings?

[Nessism]

HIKERMIKEM-Do you just use a hand drill (being careful to be square to the bore) for that hone? Is it something a mechanically sound guy can do or is this process best left to a machine shop?

I just bought a used block off eBay, and was going to ask the same ring question (sorry to hijack). Is there something else to the block that needs to be done or checked by a machinest before I fit the rings? Sorry again to jack' the thread-I love this site. Everyone here is like a brother. Thank you so much for your time guys.

It's always a good idea to check the cylinder dimensions using a bore gauge and compare to the info in the service manual. To measure is to know. Honing a worn out cylinder is a waste of time and money.

[waterman]

Not sure what you mean by "hand drill", is this a hand crank powered or a brace style drill? When I honed my cylinders, I used a cordless battery powered drill. You may want to watch this video to get a better idea how to utilize the flex hone.

http://www.youtube.com/watch?v=u9mZClv5Nfo

Be sure to thoroughly clean cylinders after honing.

[oshanac]

That video was great. I'll definately check the bores, if they fall just out of factory specs, what are my options? Larger rings? Thanks guys!

[rapidray]

If the cylinders are out of spec, the CORRECT fix is to bore to next larger size & replace pistons & rings. Ray.