Anyone run the newer 6765 BILLET turbo??
#276
Rotor Nut.
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^looks exactly the same as my standard gt35r dyno setup almost same numbers and boost levels. from what i have learned about turbos on these car within the past year is that its all about turbine wheel size and turbine a/r to make power. thats why we see the borg warner units doing/did so well on these cars. a 67 compressor is enough to make 600whp on a rotary its just that a p trim wheel is too small to run a high enough boost. if i was to do it again which i might is switch my 6765 over to a 6768 or a 7068. ill still keep the billet as i have noticed it helps with spool. on both the evos and supras you really dont see these things waking up in power until 25+psi. if i can hit 27psi with the 6765 then it might make 575whp. but it depends on how well this precision p trim size wheel flows. it looks similar to a garrett gt turbine wheel so it might let me squeeze a few more psi out of it. but there have been cast wheel t67's to make 530-550whp at 25psi.
#277
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Well I put the 3586r on the car to basically see how it would do on a rotary considering it is rated at over 75 lbs/min which is almost 15lbs/min more than a regular t3 35r turbo and evo and sti make 700+ whp off of them regularly obviously at boost levels over 30psi. I figured the small turbine would be the issue but you never know until you try. I got 120psi in front and 60psi in the rear housing the next day after that dyno so maybe it would make more with a healthy motor or I did the compression test wrong and my motor is fine. The good news is my numbers were not horrible like I thought they were. I was kicking myself thinking I was tuning it all wrong seeing so many 35r dyno numbers in the 400 range at 14-15psi.
What were your numbers with the 6765? BB? I think you can get a 6776 billet which should do well.
What were your numbers with the 6765? BB? I think you can get a 6776 billet which should do well.
#278
Rotor Nut.
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yea a hurt motor will definatly make an affect. but most of the power made on these cars in on the turbine wheel. they really do need their flow. i have made 450whp at 18psi on the 6765 so far. which is decent but not over the top impressive. billets are good if you can get them to 30psi.
#282
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ive done some minor street tuning so far. 18psi is still the highest i have gone. its about a 130mph 1/4 mile trap speed car right now. i use the vbox to test speed. so it would probably dyno 450-470whp right now. 18psi with low timing. i stopped tuning that day since i fouled the plugs with a few runs in the 9's for afr.
#283
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well we put down 430 rwhp at 14 psi on my billet 6765. until my solenoid kept pukin my profec b . killed 2 units so we werent able to raise it past 14 . im sure at 20 ill be past 500rwhp.
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