B56

gt2871r turbo

83mm cylinder bore
92.8mm stroke
144mm rods

this will yeild 2007cc displacement based on my calculations.

I am trying to build the ultimate daily driving 4 cyclinder turbo motor. So going past 6500 rpm is not my goal here. I want the turbo to be spooled and ready around 2500 rpm. Is this possible with the build specs listed above?

Any pro's or con's to the increased stroke? or any thoughts in general?

Im@wesome~ out!

why not go for a lightweight k04 car?

B56

I have a k04 right now and I'm not happy with it. It tapers off too fast. Besides, I want the best of both worlds: a big fat garrett with a quick spool, quick being like 2500rpm. what do you think?

Im@wesome~ out!

i have yet to see a big turbo that spools down low.. maybe 2500 it'll start building up some noticeable boost.. but nothing insane

Im@wesome~ out!

wait... is this on your b6 ?

Keith@APR

we use a 2871r on our TT 225 kit and our 2.0T FSI kit.

the TT kit spools to full 24 psi right at 4100 and you see 15+ by 3800'ish.

on the 2.0T fsi you start to see 15+ around 3200 with full 21 by 3300-3400'ish.

B56

Yes (ducks head)....But you guys know more about rebuilds

Mr Paul [T-28]

You are going to need a compressor map

B56

Problem is, I dont know how to read them and apply that data to my goal of a quick spool with a BT

B56

I could bolt up an eliminator and be spooled up at 3800.

If those number are what I can expect, I would consider it wasted money on internals, except for the rods.