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rod tinkerer
Joined: 14 Apr 2003 Posts: 380
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Posted: Mon May 26, 2003 9:54 pm Post subject: wat size exhaust... |
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should be used for a izusu 2L with RB20 Turbo?
and how would i variery(&)test the psi which the turbo will put out? (where does the varierying gear bolt onto)? |
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Loz backyard mechanic
Joined: 05 Oct 2001 Posts: 943
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Posted: Mon May 26, 2003 10:07 pm Post subject: Re: wat size exhaust... |
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3" would be good. Only mandrel bent though.
You need a pneumatic bleed valve which sits in between the plenum etc and the wastegate actuator. This will vary the boost input. When varying the boost you can gauge it by a boost gauge.
Loz |
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tx1975 tinkerer
Joined: 21 May 2002 Posts: 321
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Posted: Mon May 26, 2003 10:23 pm Post subject: Re: wat size exhaust... |
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2.5 inch is heaps for a small turbo even if u run 15 psi. |
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rod tinkerer
Joined: 14 Apr 2003 Posts: 380
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Posted: Mon May 26, 2003 11:21 pm Post subject: Re: wat size exhaust... |
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15 psi is pretty high...
im thinking more like 7psi
ive got a 2inch exhaust at the moment, and i think i should get a 2.5inch |
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Gene FJ20DET hod rodder
Joined: 06 Oct 2001 Posts: 9163 Location: brisbane
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Posted: Tue May 27, 2003 10:49 am Post subject: Re: wat size exhaust... |
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go the whole hog. 3.5" manderal and tig welded _________________
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tx1975 tinkerer
Joined: 21 May 2002 Posts: 321
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Posted: Tue May 27, 2003 6:38 pm Post subject: Re: wat size exhaust... |
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know of at least 2 ppl running stock turbos at 15 psi with stock exhausts, mates mx6 makes 165hp at wheels just with that and no other mods. |
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Gene FJ20DET hod rodder
Joined: 06 Oct 2001 Posts: 9163 Location: brisbane
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Posted: Wed May 28, 2003 11:00 am Post subject: Re: wat size exhaust... |
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if they put a decent zorst on they would get another 20hp. why restrict it. _________________
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tx1975 tinkerer
Joined: 21 May 2002 Posts: 321
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Posted: Wed May 28, 2003 12:31 pm Post subject: Re: wat size exhaust... |
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theres enough power there , its all about $$$ and if u have any or not as to how much power u want |
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Loz backyard mechanic
Joined: 05 Oct 2001 Posts: 943
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Posted: Wed May 28, 2003 2:45 pm Post subject: Re: wat size exhaust... |
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If your getting a new one though, then there isnt much difference in price between 2.5" and 3" so you may aswell go the 3. |
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rod tinkerer
Joined: 14 Apr 2003 Posts: 380
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Posted: Thu May 29, 2003 1:08 am Post subject: Re: wat size exhaust... |
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keep in mind that the dump pipe which is attached too the actual turbo is 2.5 inches in diametre. |
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isuzu_gem rice boy
Joined: 29 Apr 2003 Posts: 39
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Posted: Fri May 30, 2003 12:12 am Post subject: Re: wat size exhaust... |
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just go as big as you can afford and fit |
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