ar turbo sizes
Turbo Mini Forums

just wondering if someone knows the ar sizes of the t2 t25 and t3, tried doing a search but no luck, i just saw a t25 on ebay but it was a .8 isnt that massive think it must be the gtir turbo which has a bigger turbo but same block i think?

Whatever you want from 0.25 right up to 1.0+

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=3231

cheers

ok still a bit confused the higher the turbine a/r the higher up the rev range the turbo will kick in right? or is it in relation to the compressor trim? the reason i ask is that the t2 suffers from less lag/inertia yet the turbine ar is bigger, i read dave's post a while back and remember him saying its mainly due to the lower inertia of the t2 family turbo shaft but am still confused can someone correct me before i buy some piece of crap!

yep the higher the a/r, the further up the rev range the turbo will spool up

the trim will affect the spool up but it gives an idea of the wheel size

if you were to compare the size of a t3 shaft assy and t2 assy you would soon see why the higher a/r doesn't cripple the t2

the t3 wheels are much much larger than the t2

cool cheers mate

been looking at a t25 with a .64 this should be ok right and spool up a little faster? is it right that you cant get uprated parts for t2's, whats a stage 2 r5 turbo then, sorry i actually want to know, not being funny

.64 is waaaay to big!

think sumpnut is using .64 on his t25

ask him to see what he thinks,

i've got a t25 with a .49 to try hopefully in the new year so couldn't comment on how good it will be

erm, i am not entirely sure what my ar is.

My turbocharger was removed from a 200sx. I dont know what year or engine size.

It will either be .49 or .64 according to this website http://www.nissansilvia.co.nz/faq.htm#1
, but which i do not know as i dont know if i have a t25g or just a t25

What ever it is, it spools up very quick. I prefure it to my old metty t3, personally wouldnt go back.

Edited by SumpNut on 30th Aug, 2005.

If it spools up quick - it isn't going to be a 0.64 guaranteed...

0.49 it is then, although i suppose it depends exactly how you define quick.

It probably is an awful lot slower than the R5 T2 turbos, but im certain its more reactive than my old T3

at what rpm do you see full boost, and how much boost are you running?

Team Racing

glad i asked, people do chat shit on ebay sometimes

going by that link do the t25's have t3 shafts as surely this would defeat the point for example "Compressor - 45 trim T3 wheel with 0.48 A/R T25 diffuser Turbine - 1.77" wheel (62 trim), 0.49 A/R T25 housing" what difference does the trim make in relation to the ar?

ive been looking at this setup myself

mixture of T2 and T2.5. Uses T2 turbine and t2.5 compressor. With 360 deg bearing and Jic -4 oil feed adapter.

any ideas what this will run like

speed is the best rush i have ever had!!!

add me lanxter@hotmail.com

was hoping to get some good bananas but with the benefits of a t2

on the T25 i've got in the garage i can assure that the compressor is nothing like the compressor wheel of the T3, neither is the turbine wheel

the rover T25 with the .49 turbine hsg a/r is exactly what many r5 tuners sell as a stage 3 turbo, whether this will work on an a-series who know (well hopefully i will in the next few months..)

agreed i think that site is full of shit regaurding t3 parts on the t25 - simply no

Jim - i am running 10 psi, from what i remember (i havn't driven the car since Avon park) it is on full boost by 2500-3000

Im going to give my rover T25 a blast soon as well. ive also got a R5 turbo to try. then whichever works the best give it a good rebuild to get 100% out of it.
Hopefully be able to give it a blast before christmas.

hows are the cars coming along iain i here you have your engine now, let me know how those t25's go guys

Havent got my engine yet but its very close, rang today and its going well simon said so hopefully early next week.

Im guessing ill get it fitted over winter in one car or another!

Team Racing