Head Gasket

[Bosso]

I'm struggling to find an uprated head gasket with 86mm bore to my engine. where do i fin one? I'm going to use 86 mm pistons, i need 86 mm gasket as well? just so i don't get the wrong one.

 

[red reading]

cosworth,cometic.hks.greddy they all do them

 

[vss irvine]

i wouldnt use cometic, 86mm is standard size

 

[Davie Houston]

Dont get a cometic one!!!!
The water system will pressurise after a little bit of abuse,
As i found out lol.

 

[rx jamie]

yeah its worth spending a bit on the headgasket. looking back in hindsight i wish i had, i have a cometic. no problems so far tho and after a good seasons racing.
try www.rhdjapan.com

 

[tenfoloten]

you have find good cometic hg?
how much boost you run?

 

[EVOBAD]

i used cometic few years ago ran 1.6bar 420bhp no probs

 

[tenfoloten]

1,2mm hg?
are you sure is a good hg?

 

[Bosso]

i don't find 86mm bore unless its stock....... a lot of gaskets, but not 86!

 

[tenfoloten]

if you using 86mm pistons you can buy 87mm hg bore as well

 

[rx jamie]

your headgasket bore should obviously be a slightly larger bore than your pistons.
yeah not had a problem with mine and i only drive it on the strip. i run 1.2 bar on a gt2871r moving up to 2 bar in the new year. so we'll see then lol

 

[pulsarboby]

:lol::lol::lol: sorry guys but this thread is funny as fcuk:lol:

got a norwegian and italian both trying their best to speak english
fair play to you both bosso and tenfold:lol:

 

[stumo]

:lol::lol::lol: sorry guys but this thread is funny as fcuk:lol:

got a norwegian and italian both trying their best to speak english
fair play to you both bosso and tenfold:lol:

and they still do a better job than all the retards on here:doh:

 

[Bosso]

What thickness should i have? I got stock internals with new pistons. The pistons i buy will have the compretion ratio 8:5:1

 

[tenfoloten]

1,2mm thick

 

[Trondelond]

If you're struggling with the head gasket, I suppose the friendly people at nengun will be able to help you out :

http://www.nengun.com/tomei/head-gasket-metal-super-grommet-nissan-sr20det

http://www.nengun.com/tomei/head-gasket-steel-nissan-sr20det

http://www.nengun.com/power-enterprise/head-gasket

Or, you could try Eric's Performance Parts on eBay. http://stores.ebay.com/Erics-Performance-Parts

Bosso : Og ikke hør på PULSARBOBY(!), jeg har til og med korrigert stavinga hans ved anledning.

 

[pulsarboby]

:lol::lol:what you dont know trond is that i speak fluent norwegian
and this is my reply but dont tell anyone else what were talking about;-)


der ikke noe galt med meg staver Trond, på gjensyn aldri realiserbar det jeg kunne snakke norsk did du:lol:. mesteren og tenfoloten er meget morsom skjønt bortsett fra de er gjør nå vel og jeg formodning i motsetning til meg , uten behovet av en oversette

 

[Trondelond]

:lol::lol:what you dont know trond is that i speak fluent norwegian
and this is my reply but dont tell anyone else what were talking about;-)


der ikke noe galt med meg staver Trond, på gjensyn aldri realiserbar det jeg kunne snakke norsk did du:lol:. mesteren og tenfoloten er meget morsom skjønt bortsett fra de er gjør nå vel og jeg formodning i motsetning til meg , uten behovet av en oversette

Holy crap, I just about rolled off the chair lauging at that! Ok, I see your point now, it must be a hilarious thread to read! I can't even begin to translate what you wrote into something meaningful!

 

[pulsarboby]

as del boy would say from only fools & horses 'you know it makes sense':lol::lol:



anyway back to bosso's question, if you want to keep a standard compression ratio then fit a 1.2mm gasket with your 8.5:1 pistons.
i would say your best off using an hks gasket which can be sourced from graham goode racing (you wont get cheaper) just tell them the piston diamater and they will give you the appropiate sized gasket.
if however you want to drop the compression ratio to run higher boost levels more safely then go for a 2mm gasket thickness, but this will make engine more laggy off boost.

 

[Trondelond]

if however you want to drop the compression ratio to run higher boost levels more safely then go for a 2mm gasket thickness, but this will make engine more laggy off boost.

What are "higher boost levels" in your opinion?
If going for a bigger turbo, even less response off boost would make it pretty annoying as a daily driver.