how much porting for t04r
03-17-04, 09:43 AM
#1
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how much porting for t04r
Hey.
Have 1990 turbo rx7 and engine being rebuilt. what kind of porting is recommended for the intake and exhaust side with t04r and keep it streetable as well.exhaust side will be .81/ar cutback.
Thanks
Have 1990 turbo rx7 and engine being rebuilt. what kind of porting is recommended for the intake and exhaust side with t04r and keep it streetable as well.exhaust side will be .81/ar cutback.
Thanks
Last edited by DyNaMiTe KiD; 03-17-04 at 09:49 AM.
03-17-04, 10:01 AM
#2
Go with a LARGE street port. I'd highly recommend a larger A/R turbine housing unless its a Q trim. For a P trim go with a .84 or 1.0 divided or if going the non divided route a .96. If your "cut back" referes to a clipped turbine, I would have to suggest NO to that. Running such a small A/R will increase spool up speed but choke the motor. Clipping will let it breath a little easier but kills spool, so you have the WORST of both worlds.
03-17-04, 11:29 AM
#3
t04r? what type of fuel are you going to be running?
I am going with a t04b p trim .60 1.15 divided "tang"
haltech 720cc primaries, 1000cc secondaries. Trying to get 400 rwhp with stage 3 street port on 12-13lbs of boost. Oh yeah I just had my rotors milled out for the 3mm rotary aviation apex seals. Kevin Landers told me that the break in time for these seals is like 4k miles. That is going to take forever.
I am going with a t04b p trim .60 1.15 divided "tang"
haltech 720cc primaries, 1000cc secondaries. Trying to get 400 rwhp with stage 3 street port on 12-13lbs of boost. Oh yeah I just had my rotors milled out for the 3mm rotary aviation apex seals. Kevin Landers told me that the break in time for these seals is like 4k miles. That is going to take forever.
03-17-04, 12:39 PM
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Have ts04 turbo right now with 550/1680 setup and a stand alone. see how this is, may switch over to t04r and i also getting engine rebuilt maybe with aviation seals.
03-17-04, 12:57 PM
#5
t04r? what type of fuel are you going to be running? I am going with a t04b p trim .60 1.15 divided "tang" haltech 720cc primaries, 1000cc secondaries. Trying to get 400 rwhp with stage 3 street port on 12-13lbs of boost. Oh yeah I just had my rotors milled out for the 3mm rotary aviation apex seals. Kevin Landers told me that the break in time for these seals is like 4k miles. That is going to take forever.
First, with 750 and 1000cc injectors you do not have enough fuel to safely support 400 rwhp.
Second, your T04b (same specs as ebay specials and fc3s store) will NOT support much more above 350 rwhp MAX running high boost and pumping HOT air. You'll need a compressor upgrade to get closer to 400 wrhp.
Third, getting 400wrhp out of 12-13 lbs of boost on any turbo isnt going to happen. Guys arent even making those numbers at those low boost levels with T78, T88, GT40R, GT45R, or KIA T51 etc. turbos. Spend more time in the single turbo section and get better real world set up ideas and expectations. Theres pleanty of good info and people in there who have experiance in building boosted rotors and willing to help.
~Mike...............
Last edited by RacerXtreme7; 03-17-04 at 01:04 PM.
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