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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 09-12-2007, 06:42 PM   #21
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yeah, but its not really suitable for turbo, is it?
A stock exhaust might not be any more resrictive than your crushbent 2.5". I'll repeat what others have said. Your current exhaust will sound completely different with a turbo that with your super. Don't change anything until you get that kit on. See if what you have is OK 1st.
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Old 09-12-2007, 06:58 PM   #22
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+1 to get the turbo on first. Cops won't give a second look to a 2.5" free-flow muffler if you aren't constantly on the boost. The turbo is WAY more conspicuous than the exhaust is.
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Old 09-12-2007, 07:25 PM   #23
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A stock exhaust might not be any more resrictive than your crushbent 2.5".
Don't think the crushbent stock 1.875" is more restrictive than crushbent 2.5"?
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Old 09-12-2007, 07:37 PM   #24
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by the way, that crush-bent 2.5" REALLY made a lot of difference with my supercharger. it really became considerably quicker w/ stock pulley. dont know how it performed with 62.5mm pulley because i shredded a belt next day after pulley installation and didnt drive car since :/
i did push it pretty hard few times with new pulley and of course it was way faster but i never redlined it past 2nd gear to really see how good it became
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Old 09-12-2007, 09:08 PM   #25
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OK, so I'm an idiot. Never claimed otherwise. My thesaurus has crushbent listed as another word for restriction. I haven't seen a stock exhaust is so long I guess I remembered them wrong. Thought they were mandrel. Dee dee dee.
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Old 09-13-2007, 02:11 AM   #26
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most stock exhaust pipes are mandrel bent i thought. I dont recall seeing crush marks on the stock exhaust when it was still around.
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Old 09-13-2007, 02:48 AM   #27
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what you do is open up the stock exhaust slide the straight pipe through it, drill a **** load of holes in the straight pipe and wrap it with housing insluation, then put it back in the stock muffler body. it will work like a cherry bomb and look completely stock, that and with the turbo on you shouldn't have a problem. just make sure you patch it up good so the smog tech doesn't look at it too closely.
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Old 09-13-2007, 01:08 PM   #28
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i have no problems with smog. afterall im going to put megasquirt and that turbo definitely doesnt look stock. now... if only i could get a sticker from one of those carb'd kits
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Old 09-13-2007, 05:41 PM   #29
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Quote:
Originally Posted by UrbanSoot View Post
i have no problems with smog. afterall im going to put megasquirt and that turbo definitely doesnt look stock. now... if only i could get a sticker from one of those carb'd kits
and that would be illegal, so don't even think about it.
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Old 09-13-2007, 05:42 PM   #30
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right...
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Old 09-14-2007, 04:32 PM   #31
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Quote:
Originally Posted by cueball1 View Post
A stock exhaust might not be any more resrictive than your crushbent 2.5". I'll repeat what others have said. Your current exhaust will sound completely different with a turbo that with your super. Don't change anything until you get that kit on. See if what you have is OK 1st.
False. I measured backpressure on a stocker and I got 8 psi at just 6 psi of turbo boost. I measured the backpressure on mine which has a handful of crush bends, and I got ~3.5 psi at 10 psi of boost, with a Maremont Metal Cat.
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Old 09-16-2007, 12:43 AM   #32
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so yeah, i installed turbo today and sound is awesome! idles silently. at full throttle my turbo is WAY louder then exhaust
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Old 09-16-2007, 02:06 AM   #33
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told ya' so.
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