How would the new Billet tubos run on an inline pro log, looking at the 58/65 or the 62/62 or 62/65. Shooting for around 450hp. I want good spool up and the car to pull to red line. Any help or other idea's. Has anyone used the billet yet?

 

Those three are still too big! Stick with a 5557, 5857, or 5862. The 65 turbine is the size of a P trim and it flows a ton of air. Someone recently made 850whp with a 2JZ and the 6765 billet, so you know its a capable turbine.

Call the guys at Precision and they will probably tell you the same thing, stick with the smaller billet turbos. No sense in having more lag if you arent using the full potential of the turbo.

 

Looking at comparable GT turbos the gt3076 is a 57/60 and a gt35 is a 61.4/68. Now these are BB. So to get a turbo in between that would provide good spool up and 500hp it seems like the bigger option you listed would be the best choice the 5862. But how will the billet hold up or compare to the GT BB turbos. Better or worse.

What would the lag differnce be between a gt30 and a gt35 2-300, that may be worth it to get a turbo that will not need to work as hard.

Also could people comment onthe housing option cause the B housing does not seem to flow as well as the E or S.

I guess I am looking for a turbo kinda in the middle with the best housing option. I have looked at a ton of turbo graph and reall can't see where the gt35's boost all that much slower and they make a ton more HP. But again a graph is diffent than driving in the car.

 

When youre looking at those measurements there is another factor that most people dont know about. Garrett measure their turbine by the size of the induder, or where the air enters the wheel. Precision measure the exducer size. So the size of a 3076 turbine is 60/55(inducer/exducer), and the Precision 5857 is 65/57. If you move up to a 5862, the turbine size is more similar to a 35R.

The billet turbos are more efficient and can hold high PR than a standard Garrett GT turbo. Moving from a 30R to a 35R is a big step, maybe 5-700 RPM. The smaller compressor covers dont flow as well, and you lose efficiency.

If the Evo can make 500+whp with the 5557, an S2k will make power power even easier and more efficiently and the turbo wouldnt even struggle. When you run a turbo near 90-95% of its peak all the time, thats when its time to go bigger. At 450whp on your car it will probably be around 55-65% and thats why I would think its the ideal turbo.

 

I'm also looking at getting the 6262 but after seeing the graph between the HTA 35R and 6262 on the EVO why would the HTA 35R be making more power than the 6262 if the 6262 has a larger compressor that is closer to the 37R? It makes no sense to me. Would the HTA 35R be better on the S than the 6262 if I'm looking to be making around 700-750 whp eventually? Also, I'm using the LoveFab GT-1 manifold so it has longer runners so how is spool going to be between the HTA 35R and 6262 at say 30-35 psi?

 

The HTA3586 has a 62mm inducer, the same as the 6262. The 6262 is compared with a 37R frequently because it can make similar power. Comparing the HTA and 6262, I think the HTA has a slightly better compressor, but you def pay for it. Both have very similar spool.