gcb951

Is this okay to do or would I be better off using a wide fire HG?

gcb951

Again, I might have been too vague. I have an O-ringed head and I also have both a wide fire HG and a Cometic HG. Which would you go with? It appears that the Cometic is of better quality but I'm not sure as to whether it would be okay with the O-ringed head. Any thoughts?

xrad

from my recent research on the same topic, you just need a super clean smooth surface for Cometic gasket. Smooth true and clean = good. O ring = bad.

gcb951

After a search of my own it looks like the widefire HG is the one to go with.

David Floyd

Not going to say it's the right way, but my head was already o-ringed when I made the Cometic switch. Developed a slight weep after 5-6 years and 60 k miles, installed a new Cometic and all is well after another 15 k miles. YMMV

David Floyd

Not going to say it's the right way, but my head was already o-ringed when I made the Cometic switch. Developed a slight weep after 5-6 years and 60 k miles, installed a new Cometic and all is well after another 15 k miles. YMMV

gcb951

Well thats what I'm saying, the head I have is already all fancy with intake porting, stiffer springs, and an o-ringed surface. Now your saying that you got nearly 60K out of it before you had issues. To me, 60K take a very long time to put on this non daily driver.

I still wonder, widefire or cometic? I have both in my possession right now. What do I do?

David Floyd

Both will work ( I have used both) and I don't think you can go wrong either way.

gcb951

That makes me feel better. Eitherway, I'll have a worthy spare in that case.

gt37vgt

perhaps WF first then pull the o rings if you put the cometec in ??

xrad

look what Cometic has to say:

http://www.cometic.com/faq.aspx

gcb951

AH HA! Well, now I have my answer. Thank you.

David Floyd

Read that also before I switched to Cometic years ago, that is why I said in my first post "not going to say it's the right way "

Just saying it can be done with o-rings, then again I do some weird things, no balance shafts, no belt covers, no downpipe bolt, rear wiper delete

gcb951

No downpipe bolt?

TurboTim

We have a BMW we built that makes 800WHP,runs 30 psi with C16, daily driven has an o-ringed block with Cometic headgasket.No headgasket leaks or issues.The thing is the o-ring can only stick out of the surface a couple thousandths or you will get leaks with a Cometic gasket