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Old 09-13-2007, 07:23 AM   #1
saintluciascooby
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Default Head o-ring groove removal!!!!!

I want to get a new block built up for my EJ22T hybrid the current build is 2.35, for my next I want to take a EJ22T block and sleeve it to 2.5.
The problem is I have been running 2mm copperhead gaskets with oringed block and heads.
The o-ring ID on the heads is 101mm, obviously this is not going to work.
I would like to try out a set of Phuzion gaskets with this build so I need to fill the groove in the head any ideas?.
I really want to hear from someone who has actually done this with success.
Jon
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Old 09-13-2007, 08:36 AM   #2
8Complex

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Have it welded and re-machined flat by a professional shop. I don't think you have much other option.
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Old 09-14-2007, 06:37 PM   #3
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new heads, sell the old
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Old 09-14-2007, 11:48 PM   #4
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that 2mm is really a killer...soo much material. You should have it welded up and decked if you are set on salvaging them...you don't think the 101 ring will suffice with a 99.5mm bore? 1.25mm room until you get to the ring.
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Old 09-15-2007, 06:28 AM   #5
saintluciascooby
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I would love to keep the heads since I spent uber bucks having them CNC ported and polished by a F1 shop in the UK.
The distance to the o-ring groove will be only .75mm to the ring not 1.25mm.
2mm was the headgasket thickness not the groove, the groove dimensions are 0.049” wide and 0.036” deep.
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Old 09-15-2007, 10:27 AM   #6
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oh, that would be an issue than...so what is the grooves final outer diameter? .75mm would be the center of the ring or the outer edge of the ring to the piston?...keep in mind you have factory headgaskets with .25mm-0mm spacing for the piston to headgasket.
What pistons are you looking to run? Asking for deck height values
also what lift/duartion cam and valve size?(wondering about how much you can take off of the head)

besides, the location of the ring (will be between the block and the head, I wouldn't consider it to be much of a combustion issue but could make problems for the phuzion rings (once again need outer diameter of you ring)...I know that 102mm bore is the only one you could run so I could and would suggest a larger custom piston.

Also when they ringed your block before how much did they take off the block? or did they let it run with horrible cam timing?
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Old 09-15-2007, 11:42 AM   #7
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I run jun adjustable cam sprockets and rigoli race cams 272 duration and 10.5 lift, so timing was spot on, nothing was removed from the block or heads.
I was running wiseco pistons for the ej22t hybrid configuration.
I could run an ics titan gasket to I just need to hold the high boost pressures (40psi+) and nitrous, nice thing with the copper gasket if the head lifts during a run the headgasket isnt shot.
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Old 09-15-2007, 09:48 PM   #8
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looking at things, you don't have sufficient room to deck and run phuzion rings without running custom pistons (you ought to do it anyhow with the ring size being so large)...so I would have the head welded up and decked again...have someone with a nice syncro wave tig weld it up.
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Old 09-16-2007, 06:27 PM   #9
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I just happen to have one in my garage
syncro wave tig that is.
Jon
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Old 09-17-2007, 12:56 PM   #10
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Quote:
Originally Posted by saintluciascooby View Post
I run jun adjustable cam sprockets and rigoli race cams 272 duration and 10.5 lift, so timing was spot on, nothing was removed from the block or heads.
I was running wiseco pistons for the ej22t hybrid configuration.
I could run an ics titan gasket to I just need to hold the high boost pressures (40psi+) and nitrous, nice thing with the copper gasket if the head lifts during a run the headgasket isnt shot.
how do you like the cam sprockets?? do you think there is much HP to be gained from these? (lighter weight?)

as far as teh OP goes... yeah 2mm IS alot...

I have the Orings removed from my block when I had it sleeved...But luckily They didn't have to touch my heads.

Just curious... why don't you use an oring on your new block ???
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Old 09-17-2007, 04:02 PM   #11
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weight has nothing to do with the cam gears...in fact they probably weigh more than factory...they are a tool used for adjusting cam timing to make power gains, so in fact that would vary a good deal depending on the cars setup.
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Old 09-17-2007, 06:06 PM   #12
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I will use an o-ring in the new block but the diameter will be much bigger as I go to a 2.5 sleeve.
The adj pulleys are a must as soon as you go to custom cams, it is amazing what the difference is once you start to adjust the timing of the cam gears and get it dialed in. they are heavier than stock.
Jon
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Old 09-18-2007, 11:13 AM   #13
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Quote:
Originally Posted by saintluciascooby View Post
I will use an o-ring in the new block but the diameter will be much bigger as I go to a 2.5 sleeve.
The adj pulleys are a must as soon as you go to custom cams, it is amazing what the difference is once you start to adjust the timing of the cam gears and get it dialed in. they are heavier than stock.
Jon
aahh...good to know. For a while I know no one made adjustables for our cars....

maybee when I start messin with my heads in a couple years
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Old 09-18-2007, 01:09 PM   #14
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Personally if the ring on the Phuzion doesn't interfere with the existing o-ring I wouldn't even worry about it.
If you do weld up the head the skill of the welder is far more important than the brand of machine used. I think it will be very hard to successfully fill the groove and not have to mill a good bit from the head to get it flat. The heat from welding will tend to draw up the aluminum and leave a low spot around the weldment. Preheating the head on a hot plate will help some as will going slow with the weld.
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