I have a nice looking Gt35 turbo waiting to go on a yb

What spec would you recommend to make best use of it?

Low compression and loads of boost Or high comp to keep the lag to a minimum if thats possible.

The block's wire rung and will be long studded. Arp's all round on standard crank and rods. Unsure of what pistons and cams to use.


Cheers aaron

 

Depends what you want the car for really.

Not a YB man, but your going to want a well spec'd head and cam to get some decent ish spool.

I think most would say go for a 30.

 

It's not really a great choice of turbo on a 2 litre engine unless you're going for nothing but max power figures - driveability is relatively poor for the power it'll make.

 

Yes if you compare it to a t34 then i agree, but otherwise i dont.
A gt 35 is actually a pretty nice turbo, with super spool up, but it also depends on the rest of the engine and the power you want.
i have a gt35 with 1,06 exh and i get 0,1bar @ 3k and full boost @ 4500 and that is on a engine that is only made for top end power, try with a .82 exh and engine made for midrange....

 

doug stirlings first words would be

'make it a 2.2 litre' I'm pretty sure! LOL

and hes a man with experience of these too.

 

2.2 stroker or talk 2 reyland about his high deck engines!

 

It's going in a r-e-d escos shell, and will be used for track days,sprints and the strip.

Will be rear wheel driven too.

drivability is not an issue, it's not a daily drive.

Just want the best results I can get really. It's going to stay a 2 litre, what spec pistons and cams do you think would be best?

cheers aaron

 

a gt35 us a 600+ bhp turbo and 450-460 ft-tq on a 2litre
i wouldnt really use standard rods ona engine like this
and you would want a decent piston ie cosworth or cp ? or any other good make ?
also lowish compression will be safer on a wire rung block !
imo!

 

alternatively... sell it to me at a bargain price so i can use it on my Evo 2.3 stroker build

 

odd way of doing things.

buying a huge turbo then trying to spec the engine around it.

 

Don't be confussed kelv It makes sence to me.....
Rs500's have a turbo on them able to push 550bhp and they only run 220bhp standard?
If I have a turbo good for 600Bhp and run 500Bhp I think it should work well enough.
you don't have to be Finish, danish or swedish to run a large turbo

 

HOMOLOGATION

look it up...


I ran a GT35.... great for Top end power and with a PROPER 6 speed dogbox to keep it on the boil and some solid lifters OR a bigger capacity engine then yes they work well for a trackcar

On a standard 2litre YB the GT30 is a MUCH MUCH more driveable and FUN Turbo in my experience on both road and track. Its also made the Sierra a FASTER track car in my opinion.... more power for more of the time! more driveable and controlable. Just Suits a 2.0 YB alot better in my experience.

I love my GT30 and should have switched years ago!

 

2.2 litres would be the ideal starting point if using a GT35 on a YB and you want power in the mid range.

 

So, you wouldn't take the Daz doorstep challenge and go back to the GT35 then? ...

What GT 30 you running Lee?

 

GT30.76 same as myself i do believe.

correct me if im wrong tho Lee.

 

Yes its a 3076 IIRC, cant possibly be a 3071 with how it goes, lol

 

Martoon is currently delevoping his own GT32.5! for those GT30 owners wanting that bit more!

Obviously it will be tested on some proper cars on track and road and on his new Dyno Dynamics rollers.

I bet it will be the nuts

 

Is there nothing in the current Garrett range that will cover the performance he wants?

No offence to Martin but i find it hard believe a garage in brum can develop something so much better that, Garret haven't already cattered for?

 

There is a bit of a hole in the garret range for a high 500s turbo as far as im aware.

all martin is likely to be able to do is mix and match the cold and hot sides from different turbos id imagine, so not developing his own housings or anything like that.

 

clearly not or he wouldn't be trying!

Garret don't produce specific Turbos for specific spec engines do they. Its not cost effective or profitable to 'tailor' that specifically.

Its just like the modified T4's AVA have been doing on Euans engine and he is getting some great results.

 

A GT35 with a .82ar exhaust housing is a good starting point,
You will need a very good flowing engine to make it work best without surge, Some people claim its not a good turbo but this is down to the way it is being used and them not knowing how to stop the surge,
Compression wont have much effect you can be down to 7-1 or up at 8-1 but you will need to know a bit to have a good package at 8-1.

Mark

 

It is a very good chiose for a 2lt 570hp to 650hp engine.

Mark

 

If you are ref to surge and a 2.2lt wont where a 2lt will is wrong, A correctly specced YB will not surge on a GT35 regardless of size.

Mark

 

Where's the hole, a 3076 will work very well from 450hp to 520hp and a GT35 will work very well from 570hp to 650hp.

Mark

 

Well if you can't see it I'm not gong to help you

 

550?

 

 

I dont need help, after all you know how to get a GT35 to surge on a 2lt

Mark

 

a gt35 will surge on a 2lt if runnig high boost (32/33 psi)
at about 4500 i think but you can get away with 27/28 psi
from what i hear

can you get them not to then ?

 

I can get 35psi from about 4200rpm with no surge what so ever.

Mark

 

is this on a 2lt ?
would the high compression you do your engines have any
thing to do with it ?

 

How much torque though at 35 psi at 4200rpm?

 

https://passionford.com/forum/showth...light=autronic

Graphs have gone but will find them tomorrow.

Mark

 

good figures there mark !!
just out of interest why do you run very high boost ?
would this not put much more strain on the engine or is it still safe ?

 

Because I canthe engines are biult and specced to run the boost I choose i.e normaly 35psi is where I am happy,
The engine is only as safe as the mapping and componants are good for,
Done a few nowso I know where its at.

Mark

 

nice one well if its working well no point in changing

 

Not looking for an argument but why does it sound like there's surge here?

http://smg.photobucket.com/albums/07...t=MOV02066.flv

 

Thats Dave not using full throttle, Doing this causes compressor choke due to the throttle being under 70%, All big turbo's will do this with the throttle not being fully open.

Mark