I want a headgasket to raise my compression. Let me see some of your opinions on what and how.. im thinkin Mugen or Spoon... I think i want to go to 12:1..

 

I didn't know you could go that high with just a head gasket?? I may be wrong...

 

Mugen gasket = 0.4:1 increase in compression ratio.

This also retards cam timing.... I think each .010" you take off the head/gasket is 1 degree in cam timing as a general reference, but i could be wrong on that number.

 

A related question, Ive wondered what benefit (if any) would there be raising compression via headgasket in a stock internal typical I/H/E engine?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jetydosa &raquo;</TD></TR><TR><TD CLASS="quote">A related question, Ive wondered what benefit (if any) would there be raising compression via headgasket in a stock internal typical I/H/E engine?</TD></TR></TABLE>

I'm sure there's some benefit.

But its not worth an afternoon of pulling the head... for me.

 

i mean.. eventually, want something like 12 1. hehe sorry

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jetydosa &raquo;</TD></TR><TR><TD CLASS="quote">A related question, Ive wondered what benefit (if any) would there be raising compression via headgasket in a stock internal typical I/H/E engine?
</TD></TR></TABLE>

umm.. a bit more power..

i have the mugen gasket..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">This also retards cam timing.... I think each .010" you take off the head/gasket is 1 degree in cam timing as a general reference, but i could be wrong on that number.</TD></TR></TABLE>

Larry at Endyn claims its for every .012", 1 degree retard.

 

I had the Spoon 2-ply on my ITR and it was definitely NOT worh the hassle.. I gained maybe 5psi per cylinder and the difference was not noticeable at all.. I did not take a dyno measure but my 1/4 mile times were identical to before the gasket ..

What's worse is that the head gasket failed (leaked) about a year later and I had to start all over again .. At least this time, I'm getting the full head job and JUN3 setup

Sooooo, if you just want more power by adding compression, installing a thin head gasket is not the best way to do it ..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iperez &raquo;</TD></TR><TR><TD CLASS="quote">Sooooo, if you just want more power by adding compression, installing a thin head gasket is not the best way to do it ..</TD></TR></TABLE>


It's a lot simpler than any other way....

 

Why not just mill the head? It does the same thing, and no worries about the increased risk of head gasket failure. The only disadvantage I see compaired to the headgasket is the inability to go back (guess that can be pretty major though).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StyleTEG &raquo;</TD></TR><TR><TD CLASS="quote">It does the same thing</TD></TR></TABLE>

Yes and no. You can only go so high before you start impacting other things... if you want high compression, tear the motor down.

 

I should have been more clear, sorry. It does the same thing as a thinner head gasket.

You are removing material in the same area, and you run into the same problem with clearances.

Of course there are more drawbacks with raising compression from that area vs pistons (or anything else like high comp valves), as discussed. (cam retardation, reduced quench area, etc)

 

Well.. yes, its the simpler way .. but I'm sure you'll agree that higher compression pistons or milled head would be more productive and reliable in the end .. Besides, just the hassle of pulling the head off just to get that extra .04 compression is really not worth it to me .. Believe me, I did it, and I regret it .. But hey, this is just my opinion and personal experience ..