Best Head Gasket?

#41
Are you using studs or stock bolts or something else? I had this problem when I first built my engine using side cover studs from Burris. Initially I torqued them to stock specs that I cannot remember right now. Shortly into my first ride and I noticed a trail of oil behind me. The cover was loose and the gasket had shredded. It's the same thing as the head studs, I had to torque them a bit more for proper stretch. Dunno why I didn't initially think of this for the side cover, but I didn't. Also, on the second go-around I used a genuine Honda gasket that somehow fit my Predator Hemi correctly. It has not been a problem since. If you are using stock bolts, toss that junk. They apparently hit their elastic limit when installed in the factory. Perhaps they are torque-to-yield fasteners and no one told us?

-Ray
 
#42
Are you using studs or stock bolts or something else? I had this problem when I first built my engine using side cover studs from Burris. Initially I torqued them to stock specs that I cannot remember right now. Shortly into my first ride and I noticed a trail of oil behind me. The cover was loose and the gasket had shredded. It's the same thing as the head studs, I had to torque them a bit more for proper stretch. Dunno why I didn't initially think of this for the side cover, but I didn't. Also, on the second go-around I used a genuine Honda gasket that somehow fit my Predator Hemi correctly. It has not been a problem since. If you are using stock bolts, toss that junk. They apparently hit their elastic limit when installed in the factory. Perhaps they are torque-to-yield fasteners and no one told us?

-Ray
I have burris head studs that I torque to 20ft-lb. Stock head bolt torque is something like 13-16ft-lb.

I am still using the original side cover bolts torqued to 17ft-lb as per Honda spec.

I just ordered 4 side cover gaskets, 4 stock head gaskets, and a copper head gasket. I might try stacking 2 head gaskets for a poor man's MLS and see how that works.
 
#47
theres only a few things that cause gasket failure too much cylinder pressure ,too much heat ,not enough clamping force , try a yellow gaskets a few guys fixed there issue using one
Is this the gasket you're referring to? If I go with this I might have to deck the block anyway because squish band would be out the window.
 
#50
i think your over analyzing it i would just try the gasket as is see if it holds up better if it blows this one i think you got some bigger issues
But I gotsta have compression. Also I ordered 5 more 0.009" gaskets before this talk happened and they come tomorrow. I was gonna try stacking two and see how long it lasts.

Also I can't find that specific gasket anywhere. Where do you get them?
 
#51
i got mine on ebay if you look on arc racing they say the fiber gasket seals the best , i seen how your head looks like the distorted from the torque another thing could be you have a soft head im waiting on your progress i got 3 motors that i need to put together
 
#52
Now this might throw a wrench at the thread. The side cover gasket has most definitely left the building yet the head gasket is unscathed. I mean, it is perfect! Still has every little bit of Viton, squished perfectly flat, no scars or black stains on the head, deck, or gasket... I expected much more damage to be able to blow the side cover within 10 minutes-considering it took a week to blow when there was clearly a problem with the old head gasket.

Starting to wonder if there is a problem with my rings or maybe a crankcase venting problem that I overlooked? I'm gonna hold off on the yellow/red gasket for now because I think I'm chasing the wrong issue. Not to mention the yellow/red gasket is a whole 0.039" thicker than the stock gasket and the head and deck would require irreversible milling to run it.
 
#53
how hard are you turning this motor and what do you have for a vent, since you have to change the side cover gasket you could drill it for a 3/8 tube and try it you could cap it if its something else also you can put a gauge to measure the pressure in the crankcase
 
#54
how hard are you turning this motor and what do you have for a vent, since you have to change the side cover gasket you could drill it for a 3/8 tube and try it you could cap it if its something else also you can put a gauge to measure the pressure in the crankcase
I have the stock valve cover breather and a 1/4" x 3/8" hose coming out the governor hole both going to a homemade catch can. I only turn about 5500rpm max right now but when this gets sorted out I want to spin to about 6200rpm. I'm wondering if the catch can itself isn't vented enough. All it has is a plastic cap with about 20 1/8" holes drilled in it. I bought a true breather filter with the gaskets I ordered and I have another nipple for it.

This whole thing is throwing me for a loop. My first suspicion when this first happened was the catch can, but then I found the blown head gasket so I thought that was the problem. Now this. Maybe both problems exist. Not sure.
 
#55
i cant tell you whats right cause i havent run mine long enough to know ,from what i hear they build up alot of pressure its about area the stock air box pulls a vacum and it has a large area ,i know on a car if you dont vent the crankcase it will push it past the seals try putting a guage on the hose and rev it up on a stand see how much pressure builds up you might be suprized
 
#56
i do track side tuning on cars if its a new build it ussually has up to 10 issues you gotta knock it down to none , the common thing is but my friend dont have that problem i always say it dont matter you need to fix this one
 

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