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Location:
Perth W.A.
Registered:
April 2004
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Location:
Adelaide
Registered:
September 2003
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Re: Intercooler Piping
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Thu, 27 January 2005 14:28
 
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First of all - what model ? Mk2 or Mk3 ?
I have used 2.5" and this seems to be a general consensus both here and in the states for these engines. But it can depend on the cooler itself.
Material is entirely up to you and what you can afford/can access. There have been many threads on it. For real world applications, there is no performance differenec between mild steel, stainless or alloy.
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Location:
Brisbane
Registered:
May 2002
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Re: Intercooler Piping
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Thu, 27 January 2005 14:31
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What he said. Mild steel 2.5" does the job, anything more than that is just for bling/wank factor unless you're building some crazy hp dyno queen.
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Location:
Adelaide, SA
Registered:
May 2002
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Re: Intercooler Piping
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Thu, 27 January 2005 21:28
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You should paint mild steel, to help prevent rust if i'm not mistaken! Rust being sucked into the engine cannot be healthy.
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Location:
Brisbane
Registered:
May 2002
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Re: Intercooler Piping
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Thu, 27 January 2005 22:48
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The inside of the pipe gets coated in oil pretty quickly... oily pipe = no rust.
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Location:
Adelaide, SA
Registered:
May 2002
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Re: Intercooler Piping
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Thu, 27 January 2005 22:57
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True... but i'd rather be safe, than sorry!
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Location:
Sydney
Registered:
October 2003
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Re: Intercooler Piping
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Thu, 27 January 2005 23:13
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Stupid question time.... how do you paint inside the pipe? I assume you'd paint it after you weld it together?! which for me it means it would be about 3 foot long with a 90deg bend in the middle.
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Location:
Brisbane
Registered:
May 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 01:19
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Painting isn't a good idea... what happens if it gets too hot and the paint flakes off? That's more likely to be a problem than rust! You're better off getting it ceramic coated (they can do this inside and out), that's what I did on my intercooler piping.
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Location:
Newcastle
Registered:
January 2005
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Re: Intercooler Piping
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Fri, 28 January 2005 02:05
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I don't know if it was just my engine. But my 3SGTE used to really coat those pipes with oil... they were stainless, but they didn't need to be, PLENTY of oil in there... 
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Location:
sunny coast, qld
Registered:
October 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 02:07
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could you spray a light film of something like wd40 in there?
then the oil will take over once it gets running.
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 03:16
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yep - oily as poo in my 4agte
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Location:
Montrose, VIC
Registered:
May 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 07:09
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You have oily poo? damn...
I'm all for mild steel myself, and either ceramic coating (in a range of pretty colours! Including shiny!), or electroplating (chrome, zinc, etc.) to 'keep it healthy on the inside.' (Maybe a little All-Bran could help you with your oily turds, Witzl??)
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Location:
Pilbara
Registered:
November 2004
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Location:
Brisbane
Registered:
May 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 07:35
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Practically any stock turbo engine with a few thousand km's under its belt will seep some oil through the oil seals. Not necessarily so much it's dripping out of the pipe, but certainly enough to coat the pipe with a thin protective film of oil.
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Location:
On your mum!
Registered:
May 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 07:36
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I have used 2" and 2.5" in mild steel, staino and aluminium (I use aluminium because I can). It is quite amazing how much power can be made thru 2".
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 07:50
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did you notice a marked difference in responsiveness?
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Location:
On your mum!
Registered:
May 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 08:10
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not really - the main thing that hurt response was the turbo, but it can pump everything full of air very quickly (big IC).
As I have made changes I have also worked towards better flow paths - may be a trade off?
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Intercooler Piping
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Fri, 28 January 2005 09:58
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I just got all mine done in 2", for 3 reasons.
1) it matched the diameter of the cast 1G pipes
2) it meant I could have much shorter piping as well as much more direct (given my intercooler)
3) it was more than big enough to flow the power I wanted, yet isn't a huge amount of room the turbos waste filling up
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Location:
Perth W.A.
Registered:
April 2004
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Re: Intercooler Piping
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Fri, 28 January 2005 15:55
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Yep my current plastic intercooler pipes do have a fair coating of oil in them nothing too bad. Im thinking 2.5" should be big enough. My friend in his 180 has 2.5" turbo to intercooler and 3" to inlet. The workshop said it was going to be too laggy if it was all 3".
My car is a mark 3 and will i have to mount the window washer bottle elsewhere??
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