I think its because its quite rare?

 

Ditto that... At the time Karl advised me to upgrade to Greys if I could but funds didn't allow at the time, therefore he had to cap the boost down to 20psi at the top end on the greens. You def reach the limit of the greens before the .48 imho

Yep the .48 def starts making boost much earlier than the .63

I'd say that for the peeps 'wanting' ( ) the lag they would probably prefer the .63... but although it may 'feel' harder it prob wouldn't be as quick and spritely on the road.

Yeah i seem to recall that only Turbo Technics do the .55 housing... they start using the .63 on their T38 claiming it's unnecessary on a T34/35...

 

you ask me this on msn if you remember,,

somewhere around that on the dyno, and check in the car and normally is slightly richer in the car, so its adjusted to get as close to the dyno over the top end, bottom end and driveable bit is done in the car also

 

If you can't decide between, the 48 and the 63, you can get a 55 what is best of both worlds.

 

I'm still confused here as to how the hell people are getting this power from the .48 or even .63 - how long will the turbo last pushing that much power through it as my old spec T34 .48, 803's was nowhere near 400 more like 330.
If people are pushing 32psi through a T34.63 how much can i run through my SCS T38.63?? which is currently at 32psi

 

speak to stu chris im gonna run as much as possible on my t38

 

Chris, my T38 on my old Saff after Karl had mapped it was peaking @ 36psi holding around 30, made 456bhp, it was FOOKING ballistic mate.

I also agree, some of these numbers on here are very high, i,m sure Turbo life can,t be long lasting..Lol..

My T34.48 Made 363bhp with similar torque again after NMS Map, that was on Greys and peaking @ 32psi holding 28psi...Turbo has just given up on the car, i put it on brand new so it,s had around 2 and half years at this boost...

 

Stu runs t38,s at 28 psi holding and peaks at 32 thats it,better biting the bulit and buying a t4/gt30 as 38,s drive shite in my experience t34/63 drives so much nicer ,my mates produces 28 psi at 3k reves with a t34 were my t38 is almost 5k before it is producing that much boost

cheeRS stu

 

Stu,

I agree mate, my T38 car wasn,t nice to drive at all, laggy as a MO-FO ,came in around 4.4k or so, ok it was with a bang and pulled like a BIATCHHHHHH, but i much prefered my T34 Car tbh...

GT30 on my Evo was a nice Turbo, i,d either go for one of these again, or a RB T4......

 

thats engine spec making your t38 so bad, our engine have 30psi well before 4k, about 3700ish, although on the dyno we go up in 500rpm, so 3500,4000 ect, so deffo 30psi at 4k

 

Jimbo how come exact same spec is spot on with a t34 with same size exhaust housing ? nobody can give me a straight answer,have lots of diffrent answers,and lots of ppl have same experience with t38

cheeRS stu

 

my t34 has the '55 housing running 350 bhp at 20 psi on greens,so looking at what other people are running it would seem i have a scope for bit more power?

 

just out of interest what power do people think a t34 with .55 ex will make???????

thanks gaz

 

I just rebuilt engine, but on old spec:

T04E compressor with a stage 3 .63 exhaust & 360 degree thrust for longevity.
standard head & cams
10mm plenum spacer
Greys
500 cooler
live mapped

370bhp on the dyno peaking around 24psi. First gear was a waste of time. Needed rudimentary traction control in the form of not giving it full flip flop application. It would break traction when boost came on in second gear in the dry in a straight line.

When drag racing, would get a squeak from the wheels when changing into fourth.

I'm only running lattices with 205/15's though.

Boost came on hard around 3700revs. GREAT feeling. It was laggy but the effortless power was worth it.

Am sure with a rebuilt engine and ported and flowed head, I will make 400 at the wheels on whatever boost it takes. Hopefully around 25psi.

 

Depends on engine spec, standard engine with 500 cooler, good exhaust and filter, -31 actuator, fuel pump running at the correct volts, stage 3 set up on dark greens about 22psi about 340 350 or stage 3 on greys 26 psi about 360 370. but everyone will have their own views but realistic figures. Tired engine can be down 10 20 horse, or if your have cams and head work etc will achieve more as well as having more boost, but don't really want to run the turbo near max it won't last long.

 

Can you run T34 .63 safely on greens & stock fuel pump, if can, whats usually the safe max boost?

 

Greens and 023 pump = 🚑🚑🚑

Need an 044 pump

To add to above thread I have a .48 housing and boost is fully available at 3k,on the motorway at 2900 the turbo is straining to produce boost chirping like a fcukin flock of pigeons tryin to get out.

Brilliant spec eng
Harvey's green spec

T34/.48
Greens
Wrc head gasket
Std cams
Long studded
044
No head work I believe

378/375 afair

Can't praise the eng enough and on std ign

 

i am getting 400 bhp out of my saff t34 .48 back,ported and gas flowed head bd 10 cams low comp,500 cooler,light blues [400]

 

Wonder if light blues or Siemens would get me 400




Cue Jimbob

 

I'm on Siemens 55's mate...t34.48 maram shafted turbo

 

36 psi , fuck, why Maram, not needed for non-lagged spec surely....


Stu do a live map ??? Was considering goin over he gets good reviews and is a nice guy too

 

It runs anti lag mate... Yea mapped by Stu and James... Very nice to drive round town but once you push the loud pedal get ready... It's a fucking mental animal...well worth it..!

 

With std cams and no headwork blues or 55s would see you a genuine 380bhp rob

 

Yes, and however much boost the greens can give you

 

Boost on greens is usually 28 psi falling to 21psi maximum at high rpm. Always best to ask your chip writer though

 

I would always advise a set of injectors that can out flow the turbo than max the injectors out like greens... Not saying its bad but a lot safer.

 

Hardly worth Chang inj for 2 hp is it jimbo, I think I have a genuine 378 or summit according to your dyno printout

What's needed on my eng spec for 400 bar changing turbo and losing response ,low comp already iirc

 

Ron, you are not on greens if yours is 378bhp mate, sounds like your already on blues!

 

Ps, if your wanting a genuine 400bp you need a very light bit of work on the head, a nice inlet cam and 55lbs.

Oh could go gt3071 internal and not loose any response, have 430/440 would need 72lb Siemens as 55s go to 435 and are flat out.

 

Cool Jim, must check the spec Harv gave me for the eng

 

I'm running greys bd14 standard head and t34.63 peaking 2bar dropping to 1.7
What sort of power should I expect on dyno?

 

I've a t34/.63, BD14 inlet, low comp pocketed pistons and mine has been setup to peak at 32psi and it drops to around 25/26psi at the limiter (7200rpm)

No idea what power it is and frankly I'm not too fussed. Very happy with the live map MSD did and would reccommend them to anyone considering having it done!