 manifold swap, 2g on a 1g |
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 Jan 4 2006, 02:05 AM
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#1
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 Post Master  Group: Members Posts: 864 Joined: 12-July 05 From: Illinois Member No.: 556  |
I have a 2g intake manifold that Im going to port the hell out of and put on the awd. Not sure what all I have to do to make it work though, does it just bolt right on or do i have to switch out some things? Any help will greatly be appreciated.
Thanks -------------------- "One of the most Crazy and Undecisive Members in central Illinois"
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Jan 4 2006, 03:10 AM
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#2
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 Eats and sleeps DSM jargin. Group: Moderators Posts: 1,156 Joined: 23-September 02 Member No.: 16 |
you need to do some more research, but the short answer on this is that you're not going to gain much with this 'mod'.
the 2g intake manifolds were designed with port velocity in mind, which is why 2g heads and intakes had smaller cross-sectional area than 1g's. Most guys go with 1g heads and 1g intake manifolds on their 2g's for a performance upgrade though the benefits of this on a relatively mildly modified 4g63 is still questionable. Basically, it's not nearly so simple as hogging the thing out with a grinder and more than likely you'll end up hurting performance. There's a reason why porting is considered by many to be a black art and to do this properly you'd need a lot more information, skill, and access to tools like a flow bench. -------------------- my cars breath smells like car food
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Jan 4 2006, 04:16 AM
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#3
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Post Master Group: Members Posts: 864 Joined: 12-July 05 From: Illinois Member No.: 556 |
gotcha, then ill prolly just pull mine off and clean it up really good.
-------------------- "One of the most Crazy and Undecisive Members in central Illinois"
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Jan 4 2006, 07:48 AM
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#4
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 Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
akamiami is right, porting is sort of a "black art". I would just do a gasket match type port job. Put the exhaust gasket on the manifold and open up the port to match the gasket. Then blend it into the runner, you don't need to go very far in.
-------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Jan 4 2006, 08:25 AM
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#5
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 Post Master Group: Members Posts: 780 Joined: 14-July 04 Member No.: 338 |
You're right about the gasket matching technique, black92, but he was talking about doing the intake manifold. I'm pretty sure there's a significant advandage to even port matching the exhaust side rather than the intake side on a turbo setup. Travis, you're better off finding something with a better payoff to spend your time on.
-------------------- QUOTE (gsxracer80 @ Oct 31 2006, 12:41 AM)
thanks hcar.... I am still massaging that area trying to get it ready...  |
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Jan 4 2006, 09:27 AM
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#6
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Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
Sorry...didn't catch the intake part...shouldn't try to think when I'm sick!
-------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Jan 4 2006, 09:32 AM
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#7
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Post Master Group: Members Posts: 864 Joined: 12-July 05 From: Illinois Member No.: 556 |
k guys thanks for the input, I will prolly just clean mine real good and save up for a aftermarket one.
-------------------- "One of the most Crazy and Undecisive Members in central Illinois"
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Jan 4 2006, 11:45 AM
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#8
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 Post Master Group: Members Posts: 908 Joined: 7-October 03 From: Chillicothe, IL Member No.: 182 |
How high are you planning on reving? If you aren't going to go over 7500 then you will gain no power and lose torque with a short runner intake manifold. The stocker flows pretty well.
-------------------- GVR4 866/1000 = the perpetually broken car
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Jan 4 2006, 01:18 PM
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#9
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
Not necessarily. There are dyno sheets for both the Forrester and Magnus intake manifolds that show definite gains in both hp and torque below 7.5K RPM without sacrificing anything on the low end. It is true though that the higher you can rev the more power you will see from a short runner intake manifold...if you're engine is set up properly for high revs, that is.
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Jan 5 2006, 02:35 AM
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#10
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 DSMCentral Freak Group: Members Posts: 352 Joined: 7-July 04 Member No.: 319 |
have you considered an extrude honed mani?
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Jan 5 2006, 02:39 AM
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#11
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 Person of Wisdom Group: Members Posts: 110 Joined: 5-May 03 From: Granite City, IL Member No.: 128 |
are you wanting your car to run faster than a low 10? If your not then just go with a 1G intake manifold.
-------------------- Drew Taylor; 1992 Eagle Talon TSi AWD
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Jan 5 2006, 02:14 PM
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#12
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DSMCentral Freak Group: Members Posts: 352 Joined: 7-July 04 Member No.: 319 |
ya know there is more to performance than just 1/4 mile times
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