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View Full Version : 4 inch down pipe?

jubee
02-16-2010, 06:09 AM
ok have asked around and am not really getting a clear answer so i will try here.

Looking to do a 4 inch down pipe on my setup wanna know will this fit, starting from the turbo? I know ounce i go under the car it will fit but mainly in the engine bay is my concern.

This of course is a SR and its in a s13 chassis.

if anyone has done this and has pics please post them up. would like to see how it looks.
AtReYu72
02-18-2010, 04:11 PM
Do you really need a 4 '' dp ? Whats your engine setup ?
Flicktitty
02-18-2010, 04:24 PM
i think it is gonna be pretty hard to fit it with the brake assembly.
Crazyirish
02-18-2010, 08:17 PM
Not worth the hassle of getting it to fit. At least not if your going for 3 digit horsepower figures.
DreamN
02-18-2010, 08:35 PM
Not worth the hassle of getting it to fit. At least not if your going for 3 digit horsepower figures.

Uhh... what? Guess folks been having trouble breaking into the 100 HP range eh? lol


:tardrim:
951's 330i
02-18-2010, 08:40 PM
Uhh... what? Guess folks been having trouble breaking into the 100 HP range eh? lol


:tardrim:


I think he meant like 300+ but below 4 lol
devonkyle77
02-18-2010, 08:44 PM
since when did zilvia become a diesel truck forum?
PoorMans180SX
02-18-2010, 09:05 PM
No he meant like 3 digits. That could be anywhere from 100-999.

Basically it's pointless to run a 4in downpipe if you're looking for something in the 3-digit range.
mptjimmy
02-18-2010, 10:09 PM
a 4" down pipe would be perfect for a rb, or 1j or 2j with a MASSIVE turbo, but on a sr, 3" is more than enough, now if your sr was complletely built stroked to a 2.2 with cams, and a full fuel system 720cc injectors+ pushed by a t61 then maybe, and this is almost a drag setup to utilize a full 4" exhaust, but ifyour thinking a 4" down pipe to a 3" exhaust system, again all not worth , spend you money and upgrade something else
jubee
02-20-2010, 05:33 PM
ok cool thanks for all the info guys. only thing that i am not touching right now will be the bottom. only due to funds.
Ceepo
02-21-2010, 10:54 AM
My buddy has a 4inch dp on his cefiro, but he also has a rb20det with a holset HE351 turbo off a cummins diesel motor...

I dont see any benifit of this on a sr20det, spend the money elsewhere....
reflexdb
02-21-2010, 11:12 AM
Are you worried about the flow restriction from a 3'' downpipe? Do you have 4'' exhaust from the downpipe back?