head gasket thickness?

[Guest SPANKU]

just looking in eBay at some Costworth head gaskets. what size are for the ver1-4 and v5+ for a EJ20 92mm and 92.5mm?

i know the phase 2 ones are thinner and the phase 1 are thicker but now thick are they?

think its cheaper then the ones at subaru

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220409526022

[Optical]

1.37 and 0.56 fella

[Guest SPANKU]

so this .70mm is usless then?

[Guest boostcut]

 SPANKU said:

so this .70mm is usless then?

not useless, just thicker than a standard phase 2 gasket, which considering you will be pushing more boost into it, isnt such a bad idea.

[Guest SPANKU]

cool thanks. i just wanna keep it standard as possible

[Optical]

plus if you've planed the heads or decked the block you can make up the lost height

[Koom]

Does anyone know if there is anything actually better about the Cosworth headgaskets than the Cometic for example? I'm going to have to buy myself some headgaskets soon ish.

[Guest]

I would try keep the compression up over lowering it when ever possible. run a little less boost and make the same power and have better responce/driveability off boost.

[Simon C]

People doing turbo conversions to Nissan SR20DE engines follow the same principle. High compression NA engines + small turbos running low boost (~0.5bar) give really good throttle response and midrange, even if the dyno numbers aren't as impressive as a laggier, harder hitting factory SR20DET with mild tuning.

[Koom]

Also if you go too thick and loose the quench area you can introduce more det issues than you solve (by lowering the compression).

Still interested in the pro's of the Cosworth gaskets vs Cometic if anyone knows?

[Guest boostcut]

they appear to be a very similar design, id buy the cosworth set, just because theyre cheap and have a little logo haha

[Koom]

Cometic are half the price though. I don't want to pay all that extra cash just for a logo thats going to get sandwiched between the block and the heads.

[Guest boostcut]

yeah, thats true, but i am a brands whore. cometic are proven, so would be silly to stray and get bitten.

[Koom]

They have a good range of thickness' available too. Will be nice to get the squish and compression ratio spot on.

[Guest]

Overseas some people swear cometic are crap.

Sti is probably a better brand name...

[Koom]

Whats the difference though? Is that folded over bit on the Cosworth's much different to the normal fire rings on steel head gaskets? I haven't even looked to see if STI ones have the thickness I'm after either :-[

Will do that when it comes time to actually order some though.

[Guest boostcut]

sti probably buy cometic gaskets and re package them.

[BT]

 Koom said:

Cometic are half the price though. I don't want to pay all that extra cash just for a logo thats going to get sandwiched between the block and the heads.

You still get to see the awesome logo ;D

[Guest]

Simon C, Your theory on the SR20DE+T is a little out dated now.

We commonly push up to 14psi on stock DE motors on 98 pump gas and the engines produce very simlar numbers to DET motors if not better and they are just as reliable as DET engines. Its all down to the tune.

We have run 18psi through a stock SR20DE+T on E85 fuel and ran almost 300kw for a whole drift season. The only thing that killed the engine was when the guy rolled the car and didn't top up the water and then drifted another 2 events, so eventually blew the headgasket due to having a air lock in the block.

[Koom]

 BT']

[quote name='Koom said:

Cometic are half the price though. I don't want to pay all that extra cash just for a logo thats going to get sandwiched between the block and the heads.

/quote]

You still get to see the awesome logo ;D

haha OK just cause of that I'm going to change my preference for which gaskets to buy ;D

Might have to re-route some hoses to clear the view too!

[WRXER]

ZOMG I want also haha

[Koom]

Back to Cometic again as they have the 0.051" gaskets I think I want.....

Might check the STI catalogue for similar thickness.

Could always just lasercut some logo into the gasket before installing

[Stoffa]

 Koom said:

Back to Cometic again as they have the 0.051" gaskets I think I want.....

Might check the STI catalogue for similar thickness.

Could always just lasercut some logo into the gasket before installing

"KOOMWORTH" yeah!!

[Koom]

 Stoffa']

[quote name='Koom said:

Back to Cometic again as they have the 0.051" gaskets I think I want.....

Might check the STI catalogue for similar thickness.

Could always just lasercut some logo into the gasket before installing

/quote]

"KOOMWORTH" yeah!!

hmmm...... that'd be worth a laugh!

[BT]

If you want some Cosworth ones Koom have an order leaving in the next couple of days from the UK... $240NZD plus shipping to you in Chur chur.