Turbo Dilema, editted: Solved Twin Scroll BW EFR 7670 it is then.

[Sunnysidebb]

Jim & Harvey will be getting my car 2nd week Jan for his 550 bhp engine using a T4.
BUT
Before I commit, I like the spool of my T35 that's fitted atm but I know it wont produce the necessary air flow for 550 bhp.

So whats available....cost not important .....than Jim could use to produce the 550 ota power I want

Sorry Jim if we have discusses this already but I wouldn't mind a forum consensus. I have always said I'm old Skool, but I do like the spool of the turbo I have.

Whats out there atm I could consider that Jim could use.

[AJC]

You having a full engine build too? Or is your current engine spec sufficient.

GT30 will spool like a 35 but newer models now which are probably better such as the gtx

[Mike Rainbird]

Frank,
To be honest, you're better off telling Jim / Harvey what you want to achieve and they can tell you the different power out puts they have achieved with the different turbos, otherwise you will just end up with anecdotal opinion .

I suspect that you will end up with something like the GTX3071, but will be limited to around 500ish bhp with that. The "T35" is all done in at 400bhp, so nowhere near what you want.

[john savage]

frank the old addage of turbo lag= wrong gear springs to mind! nowt wrong with the trusty T4 mate, Jimbob the bufty and Harvey will look after your needs and you wont be dissapointed

[bigpower]

You don't mess about do you!!


What you doing with box and diffs???

[georgie1]

You don't mess about do you!!


What you doing with box and diffs???

i belive he going fixit on box not sure on diffs

[Carlo]

No harm intended frank but must be a proper pain in the ass for tuners when they go over a spec with the customer then read on a forum later on that the customer is asking for turbo advice with everybody's 2p worth your back to square one

I agree with mike raise your concerns with scs see wha they can come up with im sure they will be able to sort it no bother

[maxest]

No harm intended frank but must be a proper pain in the ass for tuners when they go over a spec with the customer then read on a forum later on that the customer is asking for turbo advice with everybody's 2p worth your back to square one

I agree with mike raise your concerns with scs see wha they can come up with im sure they will be able to sort it no bother

Have to agree... and i'm sure by the time your finished it would have been cheaper to buy mike r's

[Gatecrasher]

Have to agree... and i'm sure by the time your finished it would have been cheaper to buy mike r's

As much as I don't want mike to sell his one I don't think people realise what you get for the money, my old mallard cost me close to what mike us asking at that was all singing dancing stage3

[Dave]

As much as I don't want mike to sell his one I don't think people realise what you get for the money, my old mallard cost me close to what mike us asking at that was all singing dancing stage3

Mine's cost more than Mike is asking and its neither singing nor dancing

[SCS j1mbo]

At the end of the day guys it's no harm done frank having a look on the net and getting different opinions, we have had a chat but if frank wants to do something diff to the original idea then so be it

Ps we have tested some gtx turbos and wouldn't use them ourselves

I do beleive there are better turbos out there especially the latest twin scroll stuff but there is the cost of manifolds then and the bill soon creeps up lol!

[Gatecrasher]

Mine's cost more than Mike is asking and its neither singing nor dancing

Dread to think how much Peggy owes mike

[Tkracing]

Twin scroll without doubt,,,, but..... Is this just a cok fight? My cars got 550 bhp na na nanana
Wrc cars had 350/400 bhp and would wipe the floor with anything on the road ...5/600 torque tho. And a rev range always in boost....
. Better posting what you want the car for and how much it's gonna get used and stuff like that,,, bhp means fluff all really, just a guide
Will it be a motorway slag, traffic light grand prix or knockhill brute?

[john savage]

Mine's cost more than Mike is asking and its neither singing nor dancing

your problem is your a wheel whore

[Tkracing]

Ps I had a road going impreza 450 ish bhp but it done standing 1/4 just under11 secs, road tyres full interior.... Once got beat by a 1 ltr micra.... On the road. HUGE lag, wrong gear, he killed me. Don't get me wrong if I'd have dropped 3 gears I'd have minced him but we were on a dual carriageway and I'd have lost my license
Horses for courses