looking for 900+ Which turbo after single 71?

[fastisnice]

Which turbo shall i go for, i've explored more or less the potential of my turbo, i want to go bigger, shall i change the manifold to full racing? and which new turbo is good these days?, has to be DBB and good for just over 900. Preferably nothing much more laggier than a 360 thrust Sp71.

 

Thanks

[Andyhannah]

Difficult, possibly the T51 kai bb at about 2.4 bar you may get around 850-900 fwhp, that is 70.3mm if i remember rightly.

 

Maybe a HKS T51 SPL BB but i dont know when you can expect full boost with that but Dimitri will know.

[fastisnice]

but its smaller than SP71?

[Andyhannah]

but its smaller than SP71?

 

The SPL isnt its 76mm i recall

[Andyhannah]

HKS T51R SPL - 1000 PS Output

 

COMPRESSOR:

-Wheel- 56 Trim - 76.5 Inducer/ 102.2 Major

-Housing- 100 Inlet / 80 Outlet

TURBINE:

-Wheel- 76 Trim - 82.0 Major / 71.4 Exducer

-Housing- V-Band inlet / V-Band 115.5 mm outlet - 1.00 A/R

[Andyhannah]

What boost are you running on the 71???

 

Andy

[Syed Shah]

SP76? Would make the power, and pretty sure they come with a DBB option.

 

What manifold you got at the moment? Full Race manifolds are very nice, I had them make a custom one for a 1JZ. Very well made/heavy duty.

[michel lane]

you need to look at the engine first before investing in a new turbo. I suggest a 74mm DBB turbo , i have one and it spools better then the sp71 gts that i had and produces more power low end. The sp71 was designed for high boost applications hence the billet wheel. You can achive 800+rwhp on a 74 if you go further the saxo in front has just killed you of the lights. Its a combination of drivability you have to look for, i have been in a car that had 1200hp and it was awesome on motorway but the head reved to 9000rpm, but around town it was one of the worst cars i have driven off boost.

 

My thoughts are anything above 74mm i would not touchdue to lag. I suggest you try down sizing, then the entire power curve is shifted, this will give you so much fun and will feel faster then a big turbo. try hks t04z or 71dbb / 67dbb /gt4088r .81ar

[Nic]

How about the new Garrett GT4092R

 

Turbine

-Wheel: 77mm w/ 78trim

-Housing: .85, .95, 1.06, or 1.19 A/R

 

Compressor

-Wheel: 94mm w/ 52 trim

-Housing: .72 A/R

 

or

 

Garrett GT4508R

 

Turbine

-Wheel: 87.0mm w/ 85 trim

-Housing: 1.01, 1.15, 1.28, 1.44 A/R

 

Compressor

-Wheel: 108.0mm exd./80.8mm ind w/ 56 trim

-Housing: .69 A/R

[fastisnice]

you need to look at the engine first before investing in a new turbo. I suggest a 74mm DBB turbo , i have one and it spools better then the sp71 gts that i had and produces more power low end. The sp71 was designed for high boost applications hence the billet wheel. You can achive 800+rwhp on a 74 if you go further the saxo in front has just killed you of the lights. Its a combination of drivability you have to look for, i have been in a car that had 1200hp and it was awesome on motorway but the head reved to 9000rpm, but around town it was one of the worst cars i have driven off boost.

 

My thoughts are anything above 74mm i would not touchdue to lag. I suggest you try down sizing, then the entire power curve is shifted, this will give you so much fun and will feel faster then a big turbo. try hks t04z or 71dbb / 67dbb /gt4088r .81ar

 

So SP74DBB sounds like a good option, the top bottom of my engine is fully built but not the lower bottom, im not looking for 2bar boost at the moment, im between 1.5 - 1.7 has been fine for many years. Engine is very strong. I wouldn't think a 76 is suitable, i think like Michael said it will be very laggy off the lights. I want something that spools faster than my current turbo but can produce more power (my rev limiter is 8,2K).