About 715fwhp to go 139 mph at 3400lbs. Its hard to say with any accuracy the backpressure since that info is usually kept secret. Ill say that any of the top 3 or 4 TSM guys will go a lot faster than 9.70's at 26 psi. I believe they have to weigh 3550+ in TSM. Someone else can chime in on the weight. For the typical TSM build that runs 140mph id guess the backpressure would be over 45psi if the car was legal weight. Ive heard of crazy numbers over 70psi for 150mph. Not sure if they are true but i wouldnt doubt it. 150mph is 935fwhp. Ill data log my backpressures when i get the new engines in the cars with different trim turbos to see what they actually are. I was getting some boost drop off when i was at 29psi or more with an internal gate and a lot of tension on the high boost actuator.
Precision Turbo Billet Wheel Information
- Thread starter John Wilde
- Start date
About 715fwhp to go 139 mph at 3400lbs. Its hard to say with any accuracy the backpressure since that info is usually kept secret. Ill say that any of the top 3 or 4 TSM guys will go a lot faster than 9.70's at 26 psi. I believe they have to weigh 3550+ in TSM. Someone else can chime in on the weight. For the typical TSM build that runs 140mph id guess the backpressure would be over 45psi if the car was legal weight. Ive heard of crazy numbers over 70psi for 150mph. Not sure if they are true but i wouldnt doubt it. 150mph is 935fwhp. Ill data log my backpressures when i get the new engines in the cars with different trim turbos to see what they actually are. I was getting some boost drop off when i was at 29psi or more with an internal gate and a lot of tension on the high boost actuator.
2QUICK2B6
Black Car Fever
- Joined
- Sep 15, 2004
Any updates ? I just ordered a 6768 dbb billet turbo with H cover and .63 A/R hope its as good as everyone thinks it will be
Any updates ? I just ordered a 6768 dbb billet turbo with H cover and .63 A/R hope its as good as everyone thinks it will be
why get that big of a turbo and opt for the biggest compressor (H) housing then opt for the smallest exhaust housing(.63)? Just trying to understand your decision, not saying its good or bad here.
2QUICK2B6
Black Car Fever
- Joined
- Sep 15, 2004
Where The turbo will spool faster ... This is a street car and I dont plan on seeing high RPM with this engine. I do have a set of massaged DSL heads that will be going on soon with a small 212/212 roller but i wont to see what it will do with just an upgraded turbo and a 3300 PTS 9x11
- Joined
- May 27, 2001
I am guessing with the stock long block he does not think the motor has the RPM or Velocity potential to maximize the bigger turbine housing.
To be honest I wonder if it would be better with the 65 turbine wheel...
Any updates ? I just ordered a 6768 dbb billet turbo with H cover and .63 A/R hope its as good as everyone thinks it will be
We're trying to go to Darlington with it Saturday July 11th. You've ordered the same turbo as ours minus the DBB option. Ours is a full weight, all options, A/C, etc. street car as well.
K.
Sounds great ,Darlington is my home track
I thought you were close... :biggrin:
K.
