New ring gap

[redtractor]

I'm putting a new OEM ring into a 346xp oe and its gap is only .003. Is this too tight?

 

[jk14]

Yeah that's a little tight. I always use the .004" gap per inch of bore. So I believe your bore is 44mm=1.73"×.004=.007" gap min. I'd shoot for .010" myself.

 

[old guy]

Those I've done have come in at .008 - .0010, .003 sounds a little close.

 

[huskihl]

I agree. That's why we check. A few swipes with a file and it'll be at .007 or .008.

 

[Simondo]

Bit unusual for OEM stuff to be wrong .....take it is a OEM cylinder having a new OEM ring ??

 

[redtractor]

OEM cyl and ring. Pushed it down to just before the intake. I suppose there's a special file for this?

 

[Simondo]

OEM cyl and ring. Pushed it down to just before the intake. I suppose there's a special file for this?

You could use a diamond file if you have one i suppose or a very fine normal one .....I have not filed a ring down myself.

 

[redtractor]

Just checked all the IPLs again and checked against my invoice. I guess things just happen.

 

[Simondo]

Im sure your right ..just as a X check though .... Do these numbers check out ?
Pic is of
oe 346 and 353 ..same pt number for 346 from 1999 right to the change to ne 346 as far as i can see.

 

[rattler]

.008 is what I like I have saw some caber that were as tight as .004

 

[huskihl]

OEM cyl and ring. Pushed it down to just before the intake. I suppose there's a special file for this?

Push the ring up just above the ex port and measure it. The cylinder will be more worn up there

 

[jmssaws]

You always want to check with the ring up by the exhaust, rings won't be much below it if any.

 

[drf256]

I used to check every single one, but I haven't had a caber, at least in the 026 model, ever come in at anything but .006-8.

I always check over the exhaust port as well. The rings live there.