Guess the turbo.

Ok let me start by saying sorry for the stupid post but as i'm selling the car i want to be truthfull and honest and once again i've come across a speed bump so to speak!..I hate speed bumps!! lol

So my car was sold to me as having a Garrett GT4088R turbo at 612hp at ???? boost (i've never seen more than about 0.8 bar) . I have no idea if thats possible on this turbo but i have no reason to doupt the sellers word. The other day i started the car and the exhaust had blown (over night!!) so i check it and the manifolds blowing at the collector. Manifold off and an inspection shows that it was repaired badly before and it's cracked all over the place and a section of the afore mentioned pigeon poo had been blown off. This leads me to some things that make me wonder if it is a GT4088R heres whats got me thinking.

The inducer is 61mm and i can't find a GT4088R turbo with that size on there site but could be wrong

The turbine side has Precision stamped on it

There is a .68 A/R stamped on the turbine again i can't find this spec on there site

And lastly i've been killed by a MK3 supra with hybrids and also two newer shape MR2's and a Sciroco VW thing (standard) surely with the garrett and the power i'm supposed to have this should not happen!

So what do you think i have and what power? No one in this part of Germany can maintain or check my car as they all just tell me to go away due to to noisey, emissions or a bosch centre told me i'd break there dyno!..if it has 600hp+

Any Idea's?

Get pictures

Get it dyno'd - need to find someone.

Precision T61's are not GT4088's...

What's the ECU? Do you get logs off of it?

It ain't 600 if your getting beat by a vw scirocco... It also seems very low boost for that number.

It needs to go to an expert really or you might get in hot water for selling something that's not what you think it is. Although your trying to be honest!

where in Germany are you?

Mr Alex

I'll get pictures if i can but my phones camera has decided not to work and i have no other one handy so i'll see about borrowing someones.

Mr Guigsy

Yes i thout so to when the biggest GT4088R max's out at 675hp surely that would be up in the 2bar region and an aggressive map

Mr Jimmenico

I'm In Vilseck Germany nearest city would be Amberg and nearest proper city would be Nuremburg about 2hr's away. I'm driving the supra back to Fife Scotland next Thursday though for a stag do and i'm putting it up for sale to help fund the new Supra.

The one thats on the Whifbitz Supra maybe??

Sorry Mr Alex it seems i missed one of your questions. The car has AEM EMS but i believe that not all of there ECU's have the datalog function. Can i ask how would this help could you pull the turbo ID off it or just to find out what boost i should see on high?

Mr Sukhy

No my car is not from whifbitz they have supply'd almost allof the parts in the 2 yrs i've had it though!.. top company very helpfull even with people like me who are a very demanding on terms and conditions of trade. Highly recomend them to anyone!

Jonty got it off ebay USA irrc, he bought it a couple of weeks after i got my GT4088, he went with the water cooled R version.

Also I dont think its a garrett turbo, we both bought precision GT4088's

This is a video i took of your car many years ago, certainly felt quick at the time.

so what do you think i have and what power? No one in this part of Germany can maintain or check my car as they all just tell me to go away due to to noisey, emissions or a bosch centre told me i'd break there dyno!..if it has 600hp+

 

Any Idea's?

If it's not to much of a drive for you(~280km one way) there is a specialist near Rosenheim. He's called fastby4 at the MKIV.de Forums, message him. If he can't help you no one can

 

And lastly i've been killed by a MK3 supra with hybrids and also two newer shape MR2's and a Sciroco VW thing (standard) surely with the garrett and the power i'm supposed to have this should not happen!

 

I just had a look and aren't the most powerful scirocco's 210hp.. surely even an NA supra would be quicker :S

Mr JamieP

The car feels quick but not fast but the time goes on the more i think it's an illusion due to the crazy noise the turbo/screamer pipe makes. Of course you do get used to the power but i get killed by everything i've ever lined up against and with 600hp+ that surely isn't just my driving technic

Mr Canislupus

Thanks for the info however the time has come to head home (driving the 800+ miles back this Thursday) it's MOT time end of July. I think i'll have to spend another fortune on this car by taking it to Dastec/ HQ Performance in Dalgety Bay and hope they know about supra's. The annoyiny thing is i just need this to be up to the standard it should be to command the money i want for it. The sooner it go's the sooner i can start the new supra build and get the engine parts under my bed together it's a shame to have 10k in engine parts just doing nothing taunting me! I'm sure Mr Dude will be happy to see the back of the car to when i find a company to trailer it away.

Mr thedirtycat

YES!!! tbh it's the newer MR2 that bothers me the most i think they're 2-0 na's and we where side by side from 0-120mph+. Now I don't claim to be the stig but that should not happen even if i missed a gear i should have reeled him in but the guy just laughed said some German to his wife in the passenger seat and shot off!

boost is to low, at 0.8 bar you wont be anywhere near 600bhp, im sure jonty ran 1.6bar.

Give dan a ring and see if he still has the map to look at.

Mr JamieP

I thought it should be about that but on low i get 0.4/5 bar and high about 0.8 bar i thought that the car maybe made the 611.9 hp on the dyno sheet with the race fuel and nitrouse as i have switch's for both but no nitrouse it was removed before i got it!

Perhaps it has an air leak or something?

I would be checking all the intercooler pipes for tightness before doing anything else.

Mr JamieP

I thought it should be about that but on low i get 0.4/5 bar and high about 0.8 bar i thought that the car maybe made the 611.9 hp on the dyno sheet with the race fuel and nitrouse as i have switch's for both but no nitrouse it was removed before i got it!

No, there is something wrong with it, the 600bhp was just boost and pump fuel.

I just had a look and aren't the most powerful scirocco's 210hp.. surely even an NA supra would be quicker :S

Dont forget a supra is a lot heavier than a scirocco