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Old 10-20-2005, 01:53 PM   #1
wannabejdm
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Default wastegate? how does it work?

If i drill a hole into it a catless uppipe(sti) and weld a wastegate(external) onto it? Will it be the same as buying a uppipe already with the hole for a external set up? I was just wondering b/c my firend has a 38 mm external wastegate that he said he would give to me. But would this work if i do this? Wouldnt it be the same if i drilled the hole and welded?
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Old 10-20-2005, 02:50 PM   #2
Lachlan
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I don't see why it would be different--a hole is a hole right? All you're doing is relieving pressure on that side of the turbo.
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Old 10-20-2005, 03:09 PM   #3
wannabejdm
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so you think it will work?
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Old 10-20-2005, 03:10 PM   #4
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You just have to fab the pipe so the wastegate fits on
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Old 10-20-2005, 03:41 PM   #5
USF97J4x4
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Just take the uppipe off. Conserve weight.
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Old 10-20-2005, 03:48 PM   #6
Lachlan
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^I know you were trying to be funny, but something went wrong...
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Old 10-20-2005, 09:24 PM   #7
wannabejdm
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anyone else?
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Old 10-20-2005, 10:01 PM   #8
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You'd have to mod your up-pipe and down-pipe to use an external wastegate. So it can redirect exhaust flow around the turbo.

You really do not need one unless you have a huge honking turbo and creep issues. You can make big number on an STi with an internally gated turbo upgrade.

Save your time and money.


Oh..BTW...wrong forum.
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Old 10-20-2005, 10:09 PM   #9
Lachlan
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Not necessarily--many turbos have wussy waste gates and when you put on a TBE you get boost creep. You can either port the waste gate, which you can only do so much of, or get an external gate. If you're getting it for free it might be worth it, although you either have to get it to dump into your dp or deal with it dumping into the atmosphere directly.
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Old 10-20-2005, 10:24 PM   #10
wannabejdm
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i dont care about dumping it into the atmosphere i had a turbo integra like that. i just made a hose and had it leed to the ground.
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Old 10-20-2005, 10:27 PM   #11
ai42
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Err are you talking about free air wastegate? I've heard a Lancer turbo (non Evo of course) with open air wastegate and that thing is simply sounds like a rocket booster when the boost hits (and the wastegate opens up fully). I agree it should work however.
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Old 10-20-2005, 10:29 PM   #12
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Quote:
Originally Posted by wannabejdm
i dont care about dumping it into the atmosphere i had a turbo integra like that. i just made a hose and had it leed to the ground.
That better be high temp silicon (which is very expensive) otherwise it will simply melt.
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