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Old 02-08-2004   #1
AJ
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I just thought I would post up a quick pic for anyone looking to see what the visual differance is in the 2 turbo Gaskets.

The bottom gasket is the stock gasket. The top is the 7cm gasket.

Mitsu part # - MD171220 and MSRP = $22.73 + tax
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Old 02-08-2004   #2
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Which means if you have any port work done, as in taking out the ring on the turbo, or exhaust manifold, it is a waste of your time to put the 6cm gasket back in.
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Old 02-08-2004   #3
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how much did you say these are?
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Old 02-09-2004   #4
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part # and price added.
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Old 02-09-2004   #5
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Looks to be about 1 cm difference to me
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Old 02-09-2004   #6
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Quote:
Originally posted by 92tsiawd84@Feb 9 2004, 10:29 AM
Looks to be about 1 cm difference to me
And to think I thought it was an inch. LOL Yeah, I figued we have one, wh not post a pick so people can actually see a differance. And right now through Mitsu they are 3-4 weeks out for getting them.
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Old 02-09-2004   #7
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Yeah, thanks for telling me they had them (Mike). They ordered 2 in and I picked up the last one two weeks ago. He said they had them on order though.
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Old 02-09-2004   #8
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I was holding the 2nd one in my hands just a few min ago. LOL
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Old 03-14-2004   #9
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will that gasket fit my evolution and will i find any gains from it?
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Old 03-14-2004   #10
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Quote:
Originally posted by a-lo@Mar 14 2004, 05:01 PM
will that gasket fit my evolution and will i find any gains from it?
I would imagine your turbine gasket is already at least 7cm, and more than likely a different shape(since you have the twin scroll setup).
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Old 03-17-2004   #11
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The EVO's have a slightly more retarded gasket than the DSM's do...but a nice 7cm gasket will give you a nice gain. Your stock gasket is basically a restrictor plate with 2 holes in it to allow the exhaust flow. I believe all EVO-certified Mitsu tech's were briefed on this so maybe 1quick4 will know more about it. I have heard if you remove it the warranty will get voided...but then again going to the grocery store will have the same end result.
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Old 03-17-2004   #12
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Quote:
Originally posted by TalonTSiDude@Mar 17 2004, 12:49 AM
The EVO's have a slightly more retarded gasket than the DSM's do...but a nice 7cm gasket will give you a nice gain. Your stock gasket is basically a restrictor plate with 2 holes in it to allow the exhaust flow. I believe all EVO-certified Mitsu tech's were briefed on this so maybe 1quick4 will know more about it. I have heard if you remove it the warranty will get voided...but then again going to the grocery store will have the same end result.
Only if they 'catch' you driving to the grocery store on tape and review it with the board of directors.
Is your sig floppy head?
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Old 03-17-2004   #13
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Quote:
Originally posted by niterydr@Mar 17 2004, 01:58 AM
Only if they 'catch' you driving to the grocery store on tape and review it with the board of directors.
Is your sig floppy head?
1) Quite true!

2) Nope.
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I agree with Kracka.
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Old 03-17-2004   #14
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Quote:
Originally posted by TalonTSiDude@Mar 17 2004, 12:49 AM
The EVO's have a slightly more retarded gasket than the DSM's do...but a nice 7cm gasket will give you a nice gain.  Your stock gasket is basically a restrictor plate with 2 holes in it to allow the exhaust flow.  I believe all EVO-certified Mitsu tech's were briefed on this so maybe 1quick4 will know more about it.  I have heard if you remove it the warranty will get voided...but then again going to the grocery store will have the same end result.
IIRC the Evo8 has the equivalent of a 9.8cm gasket, and switching to a non-twin scroll gasket will kill the spoolup(add a shitload of lag).The idea of a twin scroll setup is to keep cylinders 1 and 4, and 2 and 3 exhaust pulses separated all the way to the turbine wheel, preventing them from meeting in the manifold out of phase.This allows the Evo to have a larger turbine housing and better spool than normal setups.
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Old 03-17-2004   #15
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From what I had read the EVO8 gasket was sized the same at the 7cm, I appologize for this information. Anyone here looked at the collector on the EVO8 manifold? I would like to see how it looks.
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Old 03-17-2004   #16
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thanks
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Old 02-25-2006   #17
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Re: 6cm Vs 7cm Gasket Comparison.

Quote:
Originally Posted by LightningGSX
IIRC the Evo8 has the equivalent of a 9.8cm gasket, and switching to a non-twin scroll gasket will kill the spoolup(add a shitload of lag).The idea of a twin scroll setup is to keep cylinders 1 and 4, and 2 and 3 exhaust pulses separated all the way to the turbine wheel, preventing them from meeting in the manifold out of phase.This allows the Evo to have a larger turbine housing and better spool than normal setups.

how can i get this to work on a dsm?
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Old 02-25-2006   #18
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Re: 6cm Vs 7cm Gasket Comparison.

You want to put a twin scroll setup on your DSM? I'd say that is an absolute waste of time. I don't even know anyone who makes twin scroll manifolds for our cars. Well, I think there were some t4 twin scroll manifolds i THINK, but I'm assuming that's not what you are looking for. If you want some stupid fast spool, just go with a ballbearing turbo. You'd probably have to make your own custom manifold to go twinscroll, plus try and find an aftermarket turbo with twinscroll designed into the exhaust housing which I doubt there are as many of those floating around as there are regular dsm aftermarket turbos.

Don't get me wrong, I loved how my buddies turbo spooled up on his evo. I think the twin scroll is an awesome design. But I think the money you'd be paying to get someone to design you a manifold for this on your car, and then spending the money on a new turbo with this design in it. I think that would be a complete waste of your money.
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Old 02-25-2006   #19
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Re: 6cm Vs 7cm Gasket Comparison.

you are probably right, i just want a quicker spool.
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Old 02-26-2006   #20
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Re: 6cm Vs 7cm Gasket Comparison.

I know one or two people have put the twin scroll Evo 8 turbos onto a DSM. I don't think it is worth all the effort though. I run a divided T4 exhaust manifold that can be used with divided or undivided T4 exhaust housings.
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