i cant deside which turbo to buy i want as close as i can to a true 500rwhp on pump fuel with out to much lag so a roller bearing turbo prob my best bet.
i wondered if anyone on heres tryed out the hp 3 turbo by sr motorsport http://www.shaneracing.com/sr93trbo.html
far a extra fee they built it with rollerbearings or a gt35r but not shore if that will make that hp.or any other turbo that might suit me and where would be the best place to buy one.
thanks
steve

 

https://www.rx7club.com/showthread.php?t=472326

Take a look at least it will give you a idea where you want to go.

 

Not to say there isn't anyone, but I can't remember anyone doing it on a 2 rotor on pump. There may be some guys doing it, I just can't recall who that might be. Anyone?

 

Its not gonna happen. Not on pump gas and without some sort of water injection or alcohol. I think the most I've seen was around 450.

 

ive got a street ported engine not shore how much its been ported 3mm seals etc apexi power fc with handheld aquamist water/alcohol injection coated inlet manifold big trust uprated intercooler uprated fuel pump to4 single turbo conversion dont no what model thinks its quite old 4-5 years its only makes 300rwhp at a bar on pump fuel and is so laggy it dont come on full boast to 5000rpm so i think its time to update the turbo id be happy if i could a 450rwhp on pump fuel there so many dif turbos its hard to deside
thanks guys

 

Hmmm max 450hp on pump gas ???? What du u meen ? Simtech racing in Norway have 482 rhp on pump gas and thats a 12a engine to so way cant u get 500+ on a 13b ?

And he dont have whater injetion.

Alexander

 

You should be making a bit more than 300 HP at one bar on a to4b. Conservative tune? Not to mention...a bunch of lag on a to4b? That thing should spool like nobodys business. Have you checked the shaft play/condition of your turbo lately?

500HP can definitely be done on pump gas, it's not an easy task, but can be done.

-Marques

 

gt42r? You can fairly easily get to 500 on pump.

 

lag

 

thanks margues i will check that im not shore what turbo it is i no its a to4 but no idea which model but im not happy with it could it be to do with the map.
i would rather aim for about 450 rwhp with less lag 500 may be pushing it abit if i want it to spool up quick

 

would a gt35r get me to a true 450rwhp as its smaller it spool up quicker or is that pushing it
thanks

 

It will get you there you will need to run a higher amount of boost, the larger T4 footprint as well.
You will need to be in the upper limits of boost on pump. We did 436@16lbs with the 1.02 A/r housing. Did you read the link I posted? It would help answer your question for you.

 

I have yet to see anyone make 500 on pump gas with my own eyes.

 

How about a 1/2bridgeported 13b-rew with a t70 and 1.15 a/r hotside? I'd like to think I can make 500 on pump

 

We are almost done with a half bridge, T4 GT35R setup that should make some good numbers. I will post the dyno when done.

Jason

 

I think you'll find that compressor a little on the small side for the motor

 

We shall see