Dont you run a 51 turbo Razor? Those PTE 50 series turbos run good for the size. They are half of a GT turbo, because they have GT turbine wheels. They work good because they make the same boost with less back pressure than the TE44's and 60's with their old style O-trim wheels.
Basically when dealing with turbos it should come down to two things. How much you heated up the air compressing it, and how much back pressure you put on the motor for that boost level.
It seams to me that every one concentrates on the compressor side of the turbo. How many compressor housings and wheel combos are there that are matched to either a O or P trim turbine wheel? Then you will have huge debates over nit picking the correct size turbo, based 90% of the time on the compressor wheel and housing. Why dont we have a big selection of turbine wheels thrown into the mix?
Garrett apparently figured this out. If you look up Garrett's GT turbos you will see they have more turbine wheels now. A turbo that is good for about 550 hp will have a different turbine wheel than one thats good for about 600 hp. They arent sticking to the one turbine wheels covers a wide range mentality any more.
The part I'm stuck on is what it the correct turbo for the boost and power level I'm at. A T66 has a real sweet compressor map for 450 to 650 hp range at the boost levels I run. That basically leaves the turbine side and since I'm stuck with a P-trim wheel my only selection is in exhaust housings. Which from best to worse one available is probably going to be 1 to 2 mph difference. I would have to buy a different 3 bolt housing if I wanted to try it, but a buddy offered me a 4 bolt housing for FREE!
I need every bit I can get, some one has to carry on the going fast w/o tearing into the motor flag!
Once I do get into the motor Ill post a pic of my oil pan. Hopefully there will be a nice view of the underside of my chasis on the launch once I get that stage 2 done.
Jason
