Front mount IC piping with stock turbo.
01-08-04, 03:03 AM
#1
Front mount IC piping with stock turbo.
Would I need to go with large diamiter if I wanted to front mount with the stock turbo? I mean the inlet duct for the stock turbo is ~2" or a hair more. Would it not be the useless if I went with say 3.5" or 3"?
01-08-04, 04:29 AM
#2
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I can tell you from experiece that 2in intercooler piping is good enough for 200rwkw on a hi-flowed S4 turbo (stock housing w/T04 wheel)
if you go 3in, 3.5in for intercooler piping you will get worse 'lag/apparent boost response'. Possibly might give you a slightly less boost loss over the pipe, just depends how much your prepared to sacrifice for this small (possible) gain in HP.
ps, the stock compressor inlet is 2.25in IIRC, the outlet is 2in exactly.
if you go 3in, 3.5in for intercooler piping you will get worse 'lag/apparent boost response'. Possibly might give you a slightly less boost loss over the pipe, just depends how much your prepared to sacrifice for this small (possible) gain in HP.
ps, the stock compressor inlet is 2.25in IIRC, the outlet is 2in exactly.
01-08-04, 01:14 PM
#6
Originally posted by Aaron Cake
I ran all 2" pipe, and while I have no dyno numbers, the car ran 12.5 in the 1/4.
I ran all 2" pipe, and while I have no dyno numbers, the car ran 12.5 in the 1/4.
That is awesome! I think 2.5" might be ok for me then. But I am definately going with 3" once I buy my TO4
Santiago
Thanks guys.
01-08-04, 03:05 PM
#7
Engine, Not Motor
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Originally posted by igottafc
Aaroncake, did u do a 1/4 before before you put your FMIC or did you have an FMIC right from the get go?
Aaroncake, did u do a 1/4 before before you put your FMIC or did you have an FMIC right from the get go?
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01-08-04, 06:44 PM
#9
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Originally posted by RETed
It's actually 60mm, which is a little larger than 2.25".
-Ted
It's actually 60mm, which is a little larger than 2.25".
-Ted
Just out of interest what are the sized for the stock IC inlet/outlet and the throttle body elbow?
01-08-04, 07:29 PM
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Originally posted by 1987RX7guy
Yeah but all of those are O.D. which means they are smaller I.D. IIRC the stock compressor inlet is rather thick. Maybe 1/8th of an inch? Ah who cares. :p
I will go out and measure it again.
Yeah but all of those are O.D. which means they are smaller I.D. IIRC the stock compressor inlet is rather thick. Maybe 1/8th of an inch? Ah who cares. :p
I will go out and measure it again.
01-12-04, 05:56 PM
#13
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Originally posted by 1987RX7guy
Aaron Cake- Was your 2" piping 2" O.D. or I.D.?
Aaron Cake- Was your 2" piping 2" O.D. or I.D.?
Ummm.......... you DO realise that the difference is only around 1mm?
01-12-04, 07:54 PM
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Umm.. im not too current with the(outdated 
) imperial system... but isnt 1/8th of an inch like 5mm?!!
thats massive for the wall of a pipe....... especially for anywhere near the 2-3in range of pipe? My exhaust isn't even close to that!!
or have I got my maths *** about and its not actually 5mm?
) imperial system... but isnt 1/8th of an inch like 5mm?!!thats massive for the wall of a pipe....... especially for anywhere near the 2-3in range of pipe? My exhaust isn't even close to that!!
or have I got my maths *** about and its not actually 5mm?
01-12-04, 07:57 PM
#16
http://www.globaljewelry.com/mm2inchconverter.htm
1/8th of an inch is 4mm. That is the standard for any 16 or 18 guage pipe I forget which one it is. But its the one that most exhaust shops sell here locally.
Santiago
1/8th of an inch is 4mm. That is the standard for any 16 or 18 guage pipe I forget which one it is. But its the one that most exhaust shops sell here locally.
Santiago
01-12-04, 11:13 PM
#17
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Exhaust tube is not 4mm wall thickness! That's steam tube!
18 gauge is 1.2mm thick, which is much more realistic. Also, most pipes are sized by their OD, not ID.
18 gauge is 1.2mm thick, which is much more realistic. Also, most pipes are sized by their OD, not ID.
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