Thread: 3inch down pipe fitment

Will a 3inch downpipe fit on the stock turbo elbow off a t25 turbo?

if it's made to fit yeah

I have a crush bent I bought used and it fits fine. It's low, be careful over bumps.

yes they fit a ran a jgy piece for a while but its def low

i have a 3 inch downpipe, and i was beating up speedbumps for a hot minute.

T25 and T28 housings are clocked differently so you have to make sure you have the right ones. Otherwise you can chop/weld.
My 3" dp has a few scrapes but I can still get over speed bumps w/o hitting as long as they aren't too big.

DP selection is always based off of manifold, not turbo.

If running Avenir/Bluebird manifold you need the T25 downpipe, if GTI-R manifold the T28 downpipe.

I had a T25 and upgraded to a GT2871R and the DP that was on the T25 bolted right up to the 2871R.

-G

No man its due to the O2 housing not the manifold. The 3 studs on the dp side of the oxygen sensor housing are clocked differently between GTiR and Av/bb.

The 5 studs on the turbine side of the oxygen sensor housing are slightly different between GTiR and Av/bb but you can get either to fit by hogging out one of the holes.

The VRS website specifically distinguishes between the two;

http://www.vrsexhaust.com/DOWNPIPES/NISSAN_DP/nissan_dp.html

Hmmm, well usually you use the O2 housing w/the same type of manifold. So I guess we're both right I didn't fully realize it was just the bolt pattern, I thought it was also kind of where the turbo was positioned between the T28 and T25 manifolds.

-G

The manifolds should put the turbo in the same location but like you said usually the O2/manifold/dp are matching so its not something you come across a lot.

but the downpipe i need will be off the elbow and not the actual turbine housing, because the bbdet motor i have has the o2 elbow coming off turbine housing and then bolted to dp that was cut right under the motor.