Is the 72 still using the 4094 turbine and housing and vanes? Drive pressure has to be crazy when making that much power.
LMM: 72 danville vs others
- Thread starter Andrewslmm7
- Start date
I would pm mark on drive pressure. I thought there was an old thread that talked about that. As far as my dp dont no, I dont keep it turned up unless im racing. I was told if you keep the boost under 36 38 it is not that bad, but up in the 40 plus range dp will go up.
Things are changing with the tuning on these chargers...
I have a buddy with a 750 rwhp LBZ with a 4094 that stays cooler than mine does. I have no clue what the DP is but it can't be that high since the EGT's stay around 1500...
68MM VGT has made a max of 740 HP and the 72mm has made 821..... I was hitting about 62 lbs of drive pressure on my big tune, 40 lbs of boost. My big tune made 678 on the dyno.
I'm running the 72 in my twin setup and I see 80psi in od with the converter locked. At 80psi I'm seeing 100psi of dp.
Sounds like Mark has this figured out guys :thumb:
And IMO 60psi of drive isnt bad, hell a stock turbo probably does that much!
And IMO 60psi of drive isnt bad, hell a stock turbo probably does that much!
I've seen S475's rap a 100psi drive pressure guage so to only see 80psi in an 800+hp vgt setup I'd consider that pretty damn good! There are alot of factors that go into drive pressure production and knowing these factors will greatly affect performance.
after watching Mark's video the other day of his truck after he made 890, i wish i would have gone with his 72mm. it really cleans up the smoke so much better then my S472