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Will this new head gasket set up alter compression at all? It looks pretty nice.

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Wade Williams
Master Ferrari Tech
Restoration Tech
Engine Machinist
Fabricator
Racecar Driver

Slightly. The old head gasket stared at .059 and compressed to 0.055", the new setup is 0.050". Seemed close enough to not bother redoing the math but for sure its a little higher compression now.

The heads are on


The o-rings were not as easy to install as I'd imagined but but the aviation sealant mostly kept them on place


Then inspect and set the head on. The 518 sealant I used on the coolant pipe test covers needs time to dry before I can pressurize, but I did put in 5 psi to make sure the orings stayed put and that is holding

Nevermind.....

My thought today is since I'm now counting on sealant everywhere but the cylinders, it could be leaking anywhere.....and I have a brand new tube of 518 sealant that now seems ideal.  I like the idea of high temp RTV too, but there is no way I can assemble this in 5 minutes.  A quick google of slow set RTV upped up form-a-gasket 2a...the thick version of aviation sealant.



I'll start with 518 and see what that does I guess.

So I knew the sealant needed time and I didn't wait.....for sure the sealant on the gage plate blew out while I was in side cleaning up. It holds no air now and I hear/feel it at the plate. When I popped the plate off there was a clear channel.

This means I have at least a temporary reprieve The plate is resealed, hot air gun deployed to speed things along.

For what it's worth, I take comfort in this.

Good luck with all of it, looking forward to a declaration of victory on this one.

The heads are sitting just a little lower now and one is hitting the oil filter adapter and I can here a small leak right there.

Its actually good I had to pull the head, a couple o-rings were not where they belonged

Looking at it I'm thinking the no sealant shows the higher low areas

This time I used 518 and it was WAY easier to assemble. after about 5 minutes I almost couldn't move the copper rings and the o-ring had no interest in popping anywhere so overall I feel a lot better this time. Leak test will be tomorrow to give the sealant time to set.

Strike 2. Gross leak out the side. When I got the heads off the o-rings stated put and looked. The issue appears to have been time, maybe it could be solved with technique, not sure. I coated the deck the shim, installed the shim copper and o-ring, then coated the top od the shim and head, assembled and torqued. It looks like the 518 began to set in the thicker areas that made contact as soon as I set the shim on and by the time I torqued it was too late for the material to flow and seal. Then it took forever to clean it all off.



Hylomer blue on 1 head, hylomer M on the other cuz I didn't have enough of either. The copper ring and 0-ring stuck in place nicely and unlike the 518 I can see it oozing out a bit so even though it gets really thick really fast it does seem to flow like they say it should. The heat gun is on the gage plate, in a couple hours I can add pressure and see what I have.