Best turbo for max power on Sr

[Charlie240sxt]

My buddy is fully buliding his Sr with AEM AMS,forged rod,pistons hole nine yards. Wants to know what turbo would bolt on a T3 flange and support 6-700whp? Money isnt really that big of deal but this is a street driven car not just a dyno queen so what would work well??

[S13240]

Funny how your friend kind of contradicts himself by wanting a daily street driven car but then at the same time wants 6-700 whp with a built motor. Insane in the membrane if you ask me. With that much hp I'd go with a 60 trim t3/t4.

[Florida240sx]

He got any suspension mods? What kind of tires does he have.Keep it under 3k and it will be streetable.

[Charlie240sxt]

Car has tein FLEX along with alot of other crap and the tires are 275/35/18 R 255/40/17F 5 lug conv, 300z brakes this is a 91 coupe but he is going with the AEM AMS and what GT turbo does well on the Sr for 6-700 hp i was just saying useable power not dyno queen car post pics soon

[Charlie240sxt]

Side shot

rear pass side

[s86d]

search= trogdor GT3071R it will (NOT) be streetable but that will get him there.-Dave

PS- streetable high hp would be the Disco turbos most common is 2871r

[USsil80]

that would be neat but 600hp is alot for a DD four banger... there would have to be one heck of a fuel system to .... what are the taillights on that car... also what did he build that engine with... do you have the details of it.. cam specs and such....but i would say a gt35 would be a good turbo to go with

[S13240]

that would be neat but 600hp is alot for a DD four banger... there would have to be one heck of a fuel system to .... what are the taillights on that car... also what did he build that engine with... do you have the details of it.. cam specs and such....but i would say a gt35 would be a good turbo to go with

Tail lights are R32 tails I think.

[Charlie240sxt]

thay are R32's I not sure what cams he has but i know everything i have seen so far is big like his injs, are 850cc. The head is P&P with 3 angle valve job the bottem end is stock as of now but has some stuff on order he also has a rb25 powerd s14 he uses a his real DD this is his 1st project so it gets done 1st he said

[USsil80]

i would say the bottom end..if in good condition.. would hold like 500hp before it blows.....think 850cc are only good for 450-500hp but i will have to check my math tonight...post more tonight..

[Turb0wned]

for 6-700hp im sure he will need bigger than 850's

[sil beer s13]

wow that car is ugly.

6-700 is unuseable hp for the street.

[s86d]

740cc good to 500hp and thats @89-90% duty so 850 should be good to 550-600 depending if they are top or side feed (not sure if its fact remember reading that side feed can run a slighly higher duty cycle than top feed)

[Onizuka]

The one 750hp SR I saw in a australian mag used a T88. It was a jun 2.2 liter crate motor, cost the dude who bought it around $55,000US with included setup. If your friend is spending $20k+ on his motor, I would hope he spent the time to figure out the right turbo or at least hire someone competent in that field

[red240sx sr20det]

ok if someone with this kind of power should or would know what he needs sounds like bs but if its the real deal have fun my buddy was going to have the fastest sr 240 possibly in the country he had like 1000 cc injectors and custom motor mounts unfortunately there talon blew up at norwalk and they can not proceed with the 240 good thing he got fine though but lucky for me i got the motormounts aluminum drive shaft and slicks off there race car for my race car thanks showdown good luck with the new talon

[s13sr20chris]

im thinking you will need at least 1000cc injectors to do it right. you will need a big turbo. i dont know if a gt40 will even get you there. you need to start with something like a gt40 and gradually build power without blowing it up. or just read the compressor maps and decide for yourself. maybe just pay up and get someone good to build it for you.

[Nismo_Freak]

1000cc InjectorsGarrett GT3540R Turbocharger

Good luck, but you better be willing to rev that engine to at least 8500 RPM to get any level of power out of it. The turbo sizing you are choosing is so large it will barely spool on the engine.

[Nismo_Freak]

60 trim t3/t4.

Uh not even close.

The compressor is tapped out at 50 lbs. / min.

[Nismo_Freak]

search= trogdor GT3071R it will (NOT) be streetable but that will get him there.-Dave

PS- streetable high hp would be the Disco turbos most common is 2871r

GT3071R in it's largest trim would have trouble with 500whp

The GT2871R is not a "Disco Potato" turbo. The "Disco Potato" is a GT28RS. The GT2871R has a totally different compressor (71mm, hence the name).

The "Disco Potato" got it's name from the shape of the compressor map. So it's defining trait is the compressor.

[Nismo_Freak]

im thinking you will need at least 1000cc injectors to do it right. you will need a big turbo. i dont know if a gt40 will even get you there. you need to start with something like a gt40 and gradually build power without blowing it up. or just read the compressor maps and decide for yourself. maybe just pay up and get someone good to build it for you.

GT40R supports 700+ HP.

I think the GT35/40R is better supported for 600whp, but if he wants to touch 700whp then he will have to go with the GT40R.

The problem is... the GT40R is a full T4 large frame turbocharger. Meaning it uses a T4 flange, thankfully with a V-band exducer.

[s13sr20chris]

woooo hoooo, you write that down boys?!?!

good stuff bro. thanks.