Fudgey

iTrader: (4)

yes i have tried to search, but not successfully!

basically im after the max power outputs for a T34 with different rear housings on.

T34.48 = ?bhp ?lbft
T34.55 = ?bhp ?lbft
T34.63 = 400bhp? ?lbft

cheers for any input.

considering making one fit my impreza lol

Staffi

iTrader: (1)

Well Matt saw 404bhp on his with similar torque on a .48, but you'll hear a lot of folks say that's unrealistic, but tbf he had it dyno'd on 3 different RRs , again, how long it would last at that though is another matter.

So I'd say for safety and this is only my guessing and I'm no tuner but have had all three, lol

.48 = 360 with similar torque, great road car, ( again, can do more with head work cam etc)

.55 = 360-370

.
63= 380=390 again all can/ could do more but I'd always opt for safety , 30-32 psi peak.

If you want ultimate punch imo go .48

gjh

Ye and Mat was running a lot of boost (2.6 bar iirc?)

H11SOW

Im going for a .48 when I bang stg 3 up its a55

dave cos4x4

iTrader: (5)

Mine did 398 bhp on a .55

Fudgey

iTrader: (4)

ah, didnt think the .48 would flow that much....

hmmmmmmm

cheers boys

id want 350-400 bhp if im going to spend the money and the old T34 is a strong turbo usually. it might see a bit of anti lag tho lol

Staffi

iTrader: (1)

Fudgey, maram shaft one you want then, go for a .55 housing pal as you'll get your desired bhp with that and will be a good road car too.

gjh

Are maram shafts still readily available though?

Staffi

iTrader: (1)

Not sure tbh, mind you i had Anti Lag through my T38 when i was on Autronic and it was fine, obviously not fully blown WRC style anti lag

gjh

I see, gotta love anti lag on a cossie though, if ever the day comes, its on the Łto do" list"

CrOwSoN15

Surely the numbers would be different on a different engine? Or am I looking at it from a wrong point of view

Staffi

iTrader: (1)

Correct, that's why I mentioned head work and cams in my above post, i think Jimbo has said their T34.48 cars make a nice solid 380 odd with head work etc etc

PF Ben

iTrader: (1)

I'm ditching my perfectly good t34 with .55 for a tony turbo systems t36 with .55 housing for the plan to hit the magic 400 (combine with one of his inlet cams). I'm worried the t34 would be cacking itself at 400bhp, and want some - ie as much as can be expected from a cossie - reliability!

Ben

costina

iTrader: (1)

Dan, why the questions? mines on a 48 at 32 psi peak yet to have it on the rollers tho.

Billy_RS

iTrader: (5)

Mines around the 380bhp area 1.5 bar boost spec below in sig

Staffi

iTrader: (1)

That's good power for boost Billy

Billy_RS

iTrader: (5)

That's what was 'predicted' bits probably more like 350bhp

Fudgey

iTrader: (4)

why? because I cant remember lol

alan Jeffery has had some very good results using a T34 on a EJ20 engine...

I should never have sold my near new T34/63 with 247 mar-m shaft

although there might be a slight delay in making the impreza faster lol.... I think I have broke the gearbox while running a bit late for work this morning lol.

I tested it on the way home with a few (about 5) hard launches and although it still works, im sure its making more noise than it was yesterday

robocop

I had a .48 rebuilt turbo mapped to 348 , but only lasted 9,000 miles cheers Chris

ginner

iTrader: (1)

Mine did 385/399 on Harvey's engine dyno
On a .48

plynchy

Mine's on a .48 and greens (for now). 300 at the wheels at MSD, recommended I install Siemens 55's, L8, loom & pump re-wire for more, reliable, power.

Mid range punch is fantastic.

Staffi

iTrader: (1)

Yes i loved my old 3dr on the NMS Live Map, T34.48 Greys @ 33psi peak, only made 362bhp with similar torque but man it delivered it well

plynchy

Coming from a stage 1 it's an incredible set up.

bigchez

You're a moron! You use the car to get to work and then "test" the already damaged box by smashing the granny out of it

Fudgey

iTrader: (4)

why a moron?

I was seeing if it was going to break properly pmsl

if the worst happens, I will just have to get the bike out and cycle to work more (try to do once a week at least, 10miles each way) was supposed to cycle this morning but had a shit nights sleep, then over slept... hence 'smashing the granny out of it'

but tbh, its a fucking rally car (almost) lol, and I don't fanny about in cars really, they are used for what they are built for.

anyway, the box has issues, so its only a matter of time lol

The Youth.

iTrader: (1)

my 55's are sat here ready for you paul lol

steve

James @ M Developments.

iTrader: (2)

Your lovely T34 247 made 370bhp 420lb/ft on my car with a .48 back end fitted

J1mbo

iTrader: (1)

Yours should hold a little more boost mate 1.8bar infact as at 1.5 bar your 350guess would be about right

Fudgey

iTrader: (4)

Yes dont rub it in mate, i regretted it ever since i got in the car and drove away from you! I wont find one like that again!

R4N SS

iTrader: (6)

i had 406bhp and 4210lb/ft in my 3dr with a harvey gibbs engine fitted - the t34 0.63 turbo only lasted 12-18 months at that level running 32psi peak and held 28psi to the limiter.

was fun tho

Staffi

iTrader: (1)

4210 is a lot of torque Ran

plynchy

Crap, sorry Steve, completely forgot about them!

PHILMC1978

ARE THESE 55'S FOR SALE? MANY THANKS
NEED A SET URGENTLY AS MINE ( 500 MILES OLD ) ARE FAULTY!!!!
CANNOT FIND A FULL SET ANYWHERE.....
MSD HAVE 3

mark r

if your intrested you will find 1 like that again heres the link to flea bay

http://www.ebay.co.uk/itm/Escort-Cos...item2a312db8ac

mark

Fudgey

iTrader: (4)

Mine was 400 miles old and i paid something like Ł400 for it as the seller didnt realise what it was.
That one from ebay will need a new compressor housing tho as it has a restrictor fitted.

Also for the impreza, should i buy a new turbo ill be looking now at a vf43 with ported exhaust housing.

They are quite a bit newer and better designed than the old garrett stuff, but maybe not quite as tough...

mark r

still a good buy for somebody thou, whats the cost of changing over the comp housing

Cossie92

Is there a big difference on the peak torque made by T34.48 and T34.55, given that same engine and boost level is used? Bigger exh. housing will surely give noticeable bump in bhp and smaller exh. housing will give more torque (and hp) in lower revs but is it really worthwhile to go .55 instead of .48 if (midrange) torque is importance?

I wouldn't want to chase numbers and peak hp, so that's why I'm looking for these smaller T34's. Is there any price difference beetween T34.48 and T34.55?

scoooby slayer

iTrader: (4)

a bigger housing wont feel as punchy but it will be faster in the real world, a t3/t34 on a 0.48 will fall on its face top revs badly ime ive had both on saphs. does anyone have any comparable dyno plots to show the gains/losses ?


as an example I have a plot from a 2.6 with a gt40 going from a 0.84 a/r upto a 1.06 a/r at the same boost and the difference was huge !



that gtr didn't feel as punchy low down but it was faster, a lot faster ie 30 - 130 was about 1.5 seconds faster !


I don't see the importance of the big punchy feel in mid revs, whats the use of that if it falls on its arse above 5000 rpm imo, when pushing hard through the gears you will constantly be above 5000 rpm and the motor is being strangled to death.

Cossie92

You are right about the bigger turbo making car faster on straight line as you will be using revs from 4000 to redline where the punch is required. However I've noticted that I rarely do hard accelerations on highways, I've been driving down smaller roads with lower gears/revs so I could use some torque low down. Here's some dynographs I found from this forum, quite a differences on torque levels 3000ish rpm.

T34.48



T34.48



T3?



T34.63 (much lag, bad map?)