noob :( head gasket

[LEV_101]

i just need to know why head gaskets is needed to be changed ? and also how much differents is 0.8mm and 0.5mm thickness is going to affect on the engine power / hp? cheers for the help

[mr30%jr]

well yea the thinkness kinda does... makes more compression which means harder bang:P

they need to be changed because they are a wearing part of the car and if they blow you wont be happy

in a way they are just like a cambelt

[Malcolm]

well a headgasket isn't routine maintenance like a cambelt, it's really only something you do when it blows, unless you're upgrading to a metal one.

Also they don't really wear, they don't experience and movement/contact or anything else that causes significant wear.

Going thinner increases compression ratio, which can be good on an NA, provided you run high octane gas, but on a turbo or supercharged engine it increases likelihood of knock/detonation. Also going thinner can turn the engine into an interference engine, meaning the pistons could hit the valves if the cambelt snaps

[LEV_101]

ooo so it can improve or gain a bit of power. so what might be a good thickness for a silvertop ?

[sergei]

In my opinion you will not gain much at all from just a head gasket job, as silvertop barely runs on 95 (unless you retard ignition), little better on 98 gas (but still can get ocasional knocks under low rpm high load), when you going to up the compression (although not by much) you will defentely need to either run better gas or retard igniton (which will lead in loss), otherwise it will knock alot..

[matt dunn]

In my opinion you will not gain much at all from just a head gasket job, as silvertop barely runs on 95 (unless you retard ignition), little better on 98 gas (but still can get ocasional knocks under low rpm high load), when you going to up the compression (although not by much) you will defentely need to either run better gas or retard igniton (which will lead in loss), otherwise it will knock alot..

I agree. They are a bit high in the compression anyway for NZ fuel on a standard tune.
Run the thickest gasket you can get.

[Mr Revhead]

for the silver top theres only 0.8mm avail in TRD. which are far cheaper than anything else available.

[rollas22]

ooo so it can improve or gain a bit of power. so what might be a good thickness for a silvertop ?

Slap a Metal TRD headgaskit in there....

[TRD001]

Is there anything thicker than 0.8 in metal?

[LEV_101]

sweet as everbody for the replys ... have asked mr revhead how much its going to cost and will be SLAPPING one on soon XD

[Mr Revhead]

Is there anything thicker than 0.8 in metal

not by TRD. i think HKS and TODA do some, but at around $300+ each.... not really worth it imo

[TRD001]

Hi Mr revhead, I emailed the email address supplied, Can you please give me the price on the 0.8 steel TRD Head gasket plese, excl gst and incl shipping please.

CHE CHE

[Bazda]

paradise racing do a variety of sizes

http://www.paradiseracing.com/gaskets.htm

[TRD001]

Would the 2mm be suitable for the N/A Blacktop 20v??

[tatsumaki]

Maybe if you were planning on running a forced induced setup.

Then again if you wanted to look at turbocharging a 20V, you'd just look to lower compression pistons.

Paul.

[Caveman]

Theres a place on rose bank road, west auckland which do full copper head gaskets, ill try find out. Copper is best for heat dissipation and like other metal gaskets are pretty hard to break.

[Malcolm]

ACL?

[Caveman]

ACL?

Dont think so.

Just asked my dad who knows him, he used to have a shop but now hes gone private, lives around kumeu. Im going to try track him down for my engine

[TRD001]

copper? good for high compression?

[Bazda]

well your compression is 10.5:1 now, if you put a 0.8mm TRS gasket it will be around 11.0:1 which is the same as a standard blacktop compression.
If you rana 0.5mm one it would be 11.5:1

If you put a 2mm one in your compression will be around 9.8:1 which is a bit too low.

hope this helps u make a decesion