Turbo to Manifold Gaskets

[awzer2]

Okay, what are the differences between 6 cm and 7 cm Inlet gaskets?
Does the 7 cm and 6 cm refer to the distance between the holes
on the compressor exhaust housing?
Or does it refer to the hole size?
And lastly Which is the best of the three?


I see a lot of

A.Copper

B.Composite and

C.Stainless Steel

here is a crush composite

TD05/TD05H 16G 4-BOLT 2.625" TURBO/TURBOCHARGER/MANIFOLD/EXHAUST ALUMINUM GASKET | eBay

here is a stainless steel

STAINLESS ECLIPSE DSM 4G63 7CM TURBO to MANIFOLD GASKET | eBay


which one would be better?

Right now i'm in a pickle because i need A new gasket.
(which i've never really looked for besides in an auto-
zone and they want a whopping 50$ for the whole turbo set)
I had a stainless steel one twice and they both broke.
i want to make sure i get the correct gasket.
the housing im going to be using is a ported 14b TD05H.

 

[92AWDHX40]

EXTREME PSI : Your #1 Source for In Stock Performance Parts

try here.

 

[awzer2]

EXTREME PSI : Your #1 Source for In Stock Performance Parts

try here.

been there before. the thing is ...
I don't know weather to get 6cm or 7cm?
whats the diff?
is one bigger in overall size?
or is one bigger in the hole pattern?
or is one bigger in the inlet??

how can they claim flat steel wont leak?
ive had 2 of those and they both broke

 

[mattasi]

I have a 7cm gasket here for my turbo, and I measured the inside exhaust hole diameter at 6cm. So measure the inside diameter of the hole. If it is 6cm, then you need the 7cm gasket.
Sorry I can't help more,...

I got my gasket from jnztuning.com.

 

[awzer2]

I have a 7cm gasket here for my turbo, and I measured the inside exhaust hole diameter at 6cm. So measure the inside diameter of the hole. If it is 6cm, then you need the 7cm gasket.
Sorry I can't help more,...

I got my gasket from jnztuning.com.

ok great,i just ordered a 7cm from extreme psi. i still think 20$ is alot for that gasket imho.

 

[atownturbo]

It has to do with your turbine housing inlet,

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left 6cm right 7cm

I get all my gaskets from ffwd
http://www.ffwdconnection.com/copper.shtml

 

[awzer2]

It has to do with your turbine housing inlet,

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left 6cm right 7cm

I get all my gaskets from ffwd
FFWD Connection - Race Injuns That Will Freeze Your Brain

oh! OK!! sickness,i understand 100% thank you dude. good thing i ordered the right one.

 

[DeadlyScone]

I get all my gaskets from ffwd
FFWD Connection - Race Injuns That Will Freeze Your Brain

Expernsive though . nice reviews and seem like they will do an awesome job. so far i got $187 out of $230 for my turbo rebuild and gaskets

 

[awzer2]

i swear guys my gsx is almost ready to go it just needs little things like this ughhh

do you guys think an exhaust leak before the turbo will cause me to lose like 20-50 hp?? my car is slow as shit right now .

 

[mattasi]

i swear guys my gsx is almost ready to go it just needs little things like this ughhh

do you guys think an exhaust leak before the turbo will cause me to lose like 20-50 hp?? my car is slow as shit right now .

It could, you defentily don't want a leak there...

 

[awzer2]

yeah and on my stock boost gauge its showing up like 4 lbs of constant pressure.
and my car idles funny at 1000 rpms

 

[Mr PopUps]

When i had access to a machine shop i used the 'belt sander' to sand both surfaces for a customer and they ran without a gasket with good results. Got a better torque seal too.

However, to answer your question the stock Mitsu gasket is more than sufficient, and like someone said it refers to the turbo inlet size.

You CAN run a 7cm on a 6cm housing/inlet, but you CANNOT use a 6cm on a 7cm inlet. This is for majorly obvious reasons

yeah and on my stock boost gauge its showing up like 4 lbs of constant pressure.
and my car idles funny at 1000 rpms

Guess i missed this post. Youve got more issues than a gasket will fix. If youre showing boost at 'idle' +/- then something is wrong. A boost leak before the turbo will cause LAG not 'pre-boost'.

 

[awzer2]

When i had access to a machine shop i used the 'belt sander' to sand both surfaces for a customer and they ran without a gasket with good results. Got a better torque seal too.

However, to answer your question the stock Mitsu gasket is more than sufficient, and like someone said it refers to the turbo inlet size.

You CAN run a 7cm on a 6cm housing/inlet, but you CANNOT use a 6cm on a 7cm inlet. This is for majorly obvious reasons



Guess i missed this post. Youve got more issues than a gasket will fix. If youre showing boost at 'idle' +/- then something is wrong. A boost leak before the turbo will cause LAG not 'pre-boost'.

i have a 190 lph with a kink in my stock feed line and 450 cc dual spray 2g injectors on my 6 bolt.. im sure its the uneven ammount of gas being fed at each time .
is it supposed to be all the way down on the stock boost gauge .
because mine is 1/4th the way up at all times or is this normal .

 

[Mr PopUps]

i have a 190 lph with a kink in my stock feed line and 450 cc dual spray 2g injectors on my 6 bolt.. im sure its the uneven ammount of gas being fed at each time .
is it supposed to be all the way down on the stock boost gauge .
because mine is 1/4th the way up at all times or is this normal .

Uh no, there is constant fuel pressure across your rail (more so at idle than at top RPM, but thats another conversation), and i ran stock 99 injectors in mine, ran so much smoother.

What boost gauge are you talking about? If its the 'guess my boost' gauge in the dash its registering vacuum too, but do NOT rely on it as its useless unless you are extremely bored.

 

[awzer2]

Uh no, there is constant fuel pressure across your rail (more so at idle than at top RPM, but thats another conversation), and i ran stock 99 injectors in mine, ran so much smoother.

What boost gauge are you talking about? If its the 'guess my boost' gauge in the dash its registering vacuum too, but do NOT rely on it as its useless unless you are extremely bored.

okay cool,yeah the guesstimator..it just has an exhaust leak now that i think of it.. disregard anything i said.

is it pretty easy to swap the compressor housing ?