Sorry, 580whp i meant. Im unable to edit my post due to using my cell phone.

 

gotcha

 

PSI is pressure where as CFM is the mass flow rate, they are not proportional.


As far as headgaskets, I'd bet installation error is the primary cause of failure.

 

I blew my 2mm cometic on the dyno and went with a laskey bottom end. If I were to do it again i'd save the $300 and put that towards the motor IMO.

 

I have been debating this topic with others, based on the feed back from others on the forum the HG with the log may be the best option. If you had a diffent mani then you may be better able to stay stock HG. I think Meth could work if you want to deal with it. So that leaves the 2mm 3mm HG. The ILP seem very relaible and is time tested, I like the idea of the 2mm but it is a 5 layer and the ILP is a 3 layer. This is what I learned.

 

don't forget you also blew one.


I've gone through a few, but its still cheaper than going built motor. If i had the money to get a built motor, i would, but to be able to make serious power on pump gas is worth it to me.

In regards to installation, i had billman install the first headgasket and another shop install the second. The one from the less experienced shop lasted 5k miles longer than the one from billman's (not sure if its miles or heatcycles that really count). I installed the last headgasket and took every precaution while installing it. It will be interesting to see how many miles it takes for this one to blow.

 

Oh boy...
So whats it going to be Scott?
How much did they say you could push on the stock head gasket?

This is why my inline kit sits on the shelf in the garage and the greddy kit is still on my car. The head gasket thing is bugging the ish out of me too.

 

Why not see what you could do with the stock HG, and then when it blows go get a built motor, I think the consensus is 10PSI is the safe margin for stock HG, but much like technology in any area its always starting off super conservative, who knows maybe 13-14, or even 15PSI can be run on these for a while if the TUNE is right..........?

There was a time when I am sure people thought it was impossible to turbocharge this thing, now look

 

Boost will raise a head and pop a gasket, due to the inability of the headbolts to control stress. Upgraded arp's should prevent this.

Also, detonation will pop gaskets as well.

I am going to try keeping the motor 100% stock and see what I can get away with.

I'm sad I can't make 500whp on pump gas, but oh well, thats what race gas is for.

Maybe throw meth on in the future and see where that puts me.

Personally if you are worried, get a bigger turbo and make more power per lb of boost to keep you from running max boost.

 

I would like to discuss another topic as it relates to the HG topic. I understand the CFM, PSI discussion but don't most of the turbos we are using run best higher than 10-12psi. Also are you leaving a lot on the table in terms of letting the thing spin like it wants/needs to. Or is as simple as HP is HP no matter how hard that bad boy spins.