Headgasket, aftermarket intake manifold?!

[sl0240]

I'm looking for a thinner than stock headgasket for my 89 240sx fastback to raise the compression just a little. Also, i'm looking for any company that makes a aftermarket intake manifold, i've been searching and searching and can't find anyone that makes one. Any info would be appreciated thanks guys

[S13ChucKAT]

goodluck on both, you wont find them..

there is a company who makes custom intake manifolds.... TopHat preformance.. or something like that

[:: orion ::]

That tiny compression bump will make so little HP that it's not at all worth it...

There are 2 compression ratios for the 89s...most are lower at 8.6:1,but the early year models have 9.1. If yours has an intake air temp sensor, it's lower compression...

That being said - Say it bumps it from 8.6 to 8.9...that's maybe 1% increase in power.

Not worth the trouble.

- - - - -

As for the intake manifold...in stock form, the stock bottom end can't rev high enough to take advantage of any short runner manifold.

FYI...

So as ^^^ he said...none are out there.

- Brian

[InsanityInc]

can't rev high enough? The stock manifold doesn't even support proper breathing to the stock low redline. I'm sure you've driven a 240sx before, and you definitely start to notice the power drop to nothing after about 6000 rpms.

[240sxin]

whats an easy way to tell if you have 9.1 compression, im not sure what a air temp sensor or where it is. im just wondering

[mackdaddy240]

if you have a lil wire going to a plug right next to air filter box then u have air temp sensor.