Stacking headgaskets?
 

I have an LS/Vtec in my 1992 civic hatchback. It has JE pistons, and the previous owner of the motor said that it had a compression ratio of somewhere near 12.5:1

My buddy said that it is possible to stack 2 headgaskets together to drop the compression. Which makes sense to me.

however, would this seal well? and what are the up sides and downsides?

Thanks.

Re: Stacking headgaskets?
 

If your C/R is really that high stacking HG's isnt going to help enouf to make it worth it if it dose work :l

Re: Stacking headgaskets?
 

hahah....stack it! See what happens! :y

Re: Stacking headgaskets?
 

get a cometic thick hg

Re: Stacking headgaskets?
 

boost it and get a good tuner.

Re: Stacking headgaskets?
 

+1

Re: Stacking headgaskets?
 

stock rods..

i'd like to be able to daily the car.. and not be worried about melting piston skirts.... thats why i want to lower the compression.

i guess thanks for the help.. from those who answered.........

Re: Stacking headgaskets?
 

you can daily drive it as it is, just never put anything less then premium in it or your asking to break something with that C/R

Re: Stacking headgaskets?
 

Not true. You will get detonation even with premium. You'll need to run atleast 100 octane and get a tune by a good tuner. Those are the words from Tom Payn's mouth. Former owner of Payn Technologies in Troy Mi.

Re: Stacking headgaskets?
 

try less timing ::)


SELL that motor and buy a different (low compression) motor... your gonna need like a 1inch thick gasket to lower it enough... i have a .074" think gasket for "turbo" and the stock gasket is .029" and it only lowers your compression one point...plus its gonna ---- with your cam timing... something even thicker? gonna ---- with it more... sell your motor and buy/build a turbo motor...

Re: Stacking headgaskets?
 

My solution: fat cam.

Re: Stacking headgaskets?
 

im glad there from his mouth, too bad his mouth is full of ----

you can daily drive a motor with 12:1 or slightly higher with premium just fine, i have personally, and i have also driven a turbo motor with a 12:1 C/R on 12 psi daily with just premium

detonation is deffinitly an enemy, but there are ways to control it. I used water injection to help lower intake temps and detur detonation, and it worked very well.

im in no way telling people with a 24:1 CR or some ---- to boost it, and just slap water injection on it and call it good, but if you look around you can useally find something to help get you to your goals.

if you want big power and lots of boost, a high CR motor is the wrong way to go and you might as well blow it up now, if you want a decently quick daily driver, you can keep it NA or stick it with 7-8lbs and call it a day

Re: Stacking headgaskets?
 

Im not even looking to boost this motor.

I would just like the compression ratio to be around 11.3:1 so I could get by with some retarded timing and premium fuel.

Re: Stacking headgaskets?
 

Thats funny, I had an 84.5mm bore 12.8:1 compression on pump gas and ZERO detonation. 244whp. Pump 92 octane. Tom Payn can suck a dick.

People have also said D series will never make over 300 on a stock engine, and its happend several times.

Re: Stacking headgaskets?
 

Cast high compression pistons such has ctr pistons are an issue not a forged piston has long has were not talking an insane style domed piston. Camshaft choice is also a major key has a large cam will bleed of alot of that compression.



In reality if your unsure buy the compression piston you want take the block to someone you feel safe putting it together and sell the high compression pistons. Peace of mind is worth alot more than a couple hundred bucks.