I fancy a gt30 but am only looking for 450 bhp ish , currently have a r/b t38 but am looking for more driveability. Or am I better staying with what I have ?

 

The gt3071 is a good choice, you gain a small amount down the bottom, a bit of mid range torque and a bit of power up top, all round a better turbo I wouldn't go gtx though personally

 

Sounds food to me Jim ! What about the 28, or is it not worth it ?

 

To do 450bhp on a GT28 series you'd have to go for the GT2876R IMO. The compressor map suggests it will support it and the good news is that they run an Inconel exhaust wheel which lends itself nicely to your ALS/LC! I've not personally experienced one back to back with a RB T38 on a YB so can't comment on the drivability, but if its anything like the GT2860RS, it will need a custom oil return to work with the 4WD manifold.

 

Kev, the T38 not do 450 then??

If not i'd go with 3071 too

 

What about my steering wheel

Steve

 

Don't think that'll make 450bhp Steve

 

Well if i chucked it up the road it would be faster than my 3dr

Steve

 

I havnt had much experience with the big gt28 kev, although I'm led to beleive the biggest gt28 runs the gt3071 comp wheel with a smaller exhaust wheel, which IMO isn't a great idea, the gt3071 exhaust wheel is suited perfectly to its comp wheel.

 

Thanks mate.

Powers fine uncle Pete, thinking more of how it's delivered tbh.

Sorry mate,soon .

Thanks Jim, after a bit of research it'll be a GT3071r I'll fit, if I change lol.

 

I can tell you that it will produce more than 288 bhp....

 

I bet it will too ginger pubes

 

gt3071r will be a good choice, i've just fitted one to my zetec turbo engine, pulls very well indeed, not particularly laggy either.
next up would be a gtx3076r, about the same lag, but more power.

gt28 would be struggling up at 450bhp

 

Have you had any experience with the ftx3076?
There's a big jump in lag between a gt3071 and a gtx3076, the latter is a 600bhp turbo!

 

Not sure why but the Audi boys do not rate the GTX3076 at all, there is apparently a better variant of it.

 

Thanks mate.

 

however the gt3076 is only marginally laggier than the gt3071r, so one would assume given the lower lag on a gtx wheel will overcome this and give great improvement on power.
the gtx3076r is only a 600bhp turbo when you're at 2.5BAR though, at 2BAR it's more of a 500bhp turbo.
exhaust housing plays a big part too, so that needs to be a factor too.

 

At 2.2 bar boost it is 590/600bhp turbo, (on a tial exhaut housing which drastically improves back pressure)

Johnny it's not just the Audi world, I don't rate the gtx turbos all that highly with the work we have done with them, deffinately better turbos out there.

 

Interesting stuff, I'm told the Blouch stuff is doing the business, not sure if you have had much experience with those ?

 

Unfortunately not mate, we do alot of one off turbos for the big stuff tbh and not use off the shelf turbos.

 

Forced Performance HTA range.

 

Kev you should see Iain to get a shot in my old car , it is similar spec to yours but with slightly lower comp. I was very impressed with the GT3071 it spooled better than my old T34.

 

Minds made up Neil, I'm having one ! Where did you get yours again ?
Did you have the anti surge thing aswell ?

 

Get down the post office and post me my steering wheel

PLEASE

Steve

 

pmsl,im at work lanky.

 

Depends who's mapping it, as id always say go with their advise but we don't use the anti surge housing, I know others do though.

 

I got mine from Vince at CR Turbos Kev.
The one I had used a machined out .63 style cosworth exhaust housing so it was a straight bolt on as far as exhaust goes. It isnt the best as far as back pressure but since I wasnt planning on doing alot of top speed or track work I worked out well for me.

 

Thanks Neil,im lost with all the different variations etc,just want one ready to bolt on.

 

Even the ones that bolt on easily are still a pain in the ass as far as the oil drain goes when using a 4wd manifold.

 

not sure if the gt28 will take you to 450hp. on my engine (3sgte) there only good for 350-400 iirc. have a word with tim bill at tb developments as he is a uk supplier

 

But worth it though.

Thanks bud.