Gap in o-ring on cylinder head

[bwhite]

I just got my head back from the machine shop. I had a valve job mill and o-ring done. While inspecting it the gap in the o-ring on one cylinder seems to be alot more then the others. Will this create a sealing problem? I have pic for some reason the upload button is not working on my mobile...

 

[96' Eclipse GS]

A photo would do wonders for us....

 

[92mitsubishi]

Im no guru but I don't see it causing any problems you will have a gasket there anyway

 

[92tsiawdguy]

Once the head it torqued down the steel wire will close up the gap when compressed. You will be fire.

 

[bwhite]

Shouldnt all the gaps be even? Its hard to tell by the picture but that gap is about a thumbnail and the others theres really no gap. Is there a minimum or maximum gap on something like this. Im just afraid to put this head on and have it leak.

 

[GRAVEDIGGER]

Man.... I sure would like to see that odd one have pretty much no gap like the other three.

 

[BogusSVO]

I hope JAM will speak in here, they O ring heads, so they will be able to give you the correct info.

Since this is something I do not do, I have nothing more to say.

 

[bwhite]

I hope JAM will speak in here, they O ring heads, so they will be able to give you the correct info.

Since this is something I do not do, I have nothing more to say.

I was hoping that you would know. Damn. I called a few other local machine shops, they said that the ring should be budded together. I called the machine shop that did the work he also said the same thing at first. Now he says let me check. Wtf. Im so aggitated with this guy.

 

[BogusSVO]

Give JAM time.. like 24 hours.... I did send them a link to this thread.

 

[bwhite]

Give JAM time.. like 24 hours.... I did send them a link to this thread.

Thanks.

 

[bastarddsm]

I was under the assumption that the oring does not seal the gases, only holds the fire ring from being "blown out" under severe cylinder pressure. Therefore it doesn't need too seal or butt up tite.

One of my Vintage MX bikes I play with is a 250 kaw 4 stroke that I have created a hi comp big bore for by using a piston for a different bike, as such there is not head gasket available for this combination. I curt a small grove in the top of the sleve for a 0.023" copper wire to fit in. I butted the ring up fairly tight, but there is still a small gap. I'd estimate it at about .010" It leaks combustion gasses, but I let it warm up well and it seals up good. This thing is about 16:1, and it is holding up. The copper wire is all it has for a gasket. Not that it applies exactly to your situation, but it's data nonetheless.

 

[bwhite]

Any other opinions? JAM?

 

[JacksonAuto]

Sorry for the late reply, long nights at the shop.

While the gap does appear to be a bit wider than normal, it will do it's job. It's not the job of the o-ring to seal combustion gasses. It is there to force the gasket up into the receiver groove. Glad to see someone using the appropriate stainless wire for a change! Good luck with your project.

 

[bwhite]

Thanks.