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I need an alternative to Cometics...

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12K views 87 replies 33 participants last post by  389SixPack  
#1 ·
I would like to say first and foremost, that I have NEVER had a problem with any Cometic gaskets or ARP head studs, except on my own personal engine... With that said, I recently (today) figured out why that is. I would recommend Cometics and ARP's to ANYONE who has had the proper machine work done to the block surface and head surface, however for whatever reason, my block has never been decked. That is my own fault, not Cometics or ARP's.

I need an alternative because I have one low spot on the number one cylinder that is .0015" low. Everything else on my block is perfect and I know that I could strip it down to a bare block and have it decked, but I really hate to do that, as there is nothing else wrong with the block, pistons, rods, etc...

As of right now, I plan to send the heads to Wide Open Performance and have fire rings cut and install new H-11 Studs. Is there any other alternative that has been sucessful at holding up to or over 100lb's of boost? According to Jacob they have had a great track record with their product as Zane's engine has been together for 5 years and the heads have never been off of it. :eek:

I am looking for a plan that will work, not opinions or hearsay. Thanks!
 
#2 ·
:stupid: mainly cause we were goin to send the heads there together. he cant do it cause of thickness reasons but i had considered cometic phuzions but after talkin to him they have not be proven on these things so....
 
#5 ·
ya its a good thing i brought my other one home last weekend:hehe:
 
#6 ·
#7 ·
I once used a set of "Flat-Out" Copper gaskets that uses and RTV on both sides as well as double opposing .050 diameter stainless, one in the head and one in the block (different diameters) , machined by Fowler, on a 1000 plus HP Duramax. Works great........... Oh, and they are reusable........
 
#12 ·
Key word here is yet right :evil:evil:evil
 
#19 ·
SWINGER...........he is. But good nuts to swing on I guess if your gonna be a nutswinger.

I am wondering if firerings will work for Nate as he said he a has a imperfection in 1 spot on his block.
 
#25 ·
I am wondering if firerings will work for Nate as he said he a has a imperfection in 1 spot on his block.
That is also what I am wondering. I know .0015" isn't much, but I want to be sure that the fire rings will seal it before I go that route. I like the fact of going back to the srock gaskets because they will be a little more forgiving for the imperfection, however I don't know whether the fire ring will seal or not...
 
#23 ·
who's running fire rings with the machining done to the block side instead of the heads or running half and half machined. This was brought up to me by the guy who machined my block who mainly does high 2000hp+ horsepower boat motors. Anyone???
 
#26 ·
Nate, I hate to say it, but if your gonna do it, do it right and pull the motor and have the block decked to get you back to where it needs to be.

I would hate to see you spend the cash and then have the fire rings fail after not taking care of the REAL problem in the first place.

I know its not my money or time, but if it were me, thats what I'd do.

Marc
 
#37 ·
to me I would pull it, deck the block then groove the head and the block never look back and rag on it like a redheaded step child with no worries pushin all the boost you want thats what the monster horsepower boat guys down here do. Why wouldn't it work on a 7.3 he almost talked me in to it but im sticking with stock gaskets for now as a band-aid rather blow a gasket them pieces of block all over. Seems best to relieve some of the stress of/on the head there's not to much metal there anyways in the first place to be removing and machining a groove in pushing 100lbs of boost. The whole point is to keep stuff together
 
#40 ·
Oh snaps