head gasket sr20 thickness - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mtr27 · 04-08-2013, 06:08 PM

Hi all I'm gonna put supertech piston 86.5 or 87mm wih 9:1 compression ratio and I wanna know witch thickness head gasket I have to put if I wanna save my original compression ratio (8.5:1).. thanks all

Or if I save the 9:1 compression ratio what that do or what I have to change

*fliprayzin240sx* · 04-08-2013, 06:57 PM

Doesnt really matter, the difference is minimal compression wise. I'd be more worried about how much you'll shave to head when/if you get it decked so you'll have the same thickness.

Kingtal0n · 04-08-2013, 11:08 PM

I like the thinner gaskets. It makes me feel like there is less area to present to the process of combustion.
more specifically, it feels like there is less space between the head and deck (quench?) for the process of combustion to interact with places it should not be allowed to go.

remember, the gasket does not cover everything. exposed places, big spaces/gaps, not a good thing. Get the head as close to the block as you can.

04-08-2013, 06:08 PM	#1
mtr27 Join Date: Sep 2011 Location: repentigny quebec Age: 31 Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	head gasket sr20 thickness Hi all I'm gonna put supertech piston 86.5 or 87mm wih 9:1 compression ratio and I wanna know witch thickness head gasket I have to put if I wanna save my original compression ratio (8.5:1).. thanks all Or if I save the 9:1 compression ratio what that do or what I have to change

04-08-2013, 06:57 PM	#2
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Doesnt really matter, the difference is minimal compression wise. I'd be more worried about how much you'll shave to head when/if you get it decked so you'll have the same thickness. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

04-08-2013, 11:08 PM	#3
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 41 Posts: 4,829 Trader Rating: (17) Feedback Score: 17 reviews	I like the thinner gaskets. It makes me feel like there is less area to present to the process of combustion. more specifically, it feels like there is less space between the head and deck (quench?) for the process of combustion to interact with places it should not be allowed to go. remember, the gasket does not cover everything. exposed places, big spaces/gaps, not a good thing. Get the head as close to the block as you can. __________________ 5.3/4l80e/turbo 240sx playthrough: tinyurl.com/4l80er