Rspec fc engine preview
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
T3 or T4?
The reason I ask is because if it really is a .63 T3, then it will be great until 4500 RPM and after that, will just be an exhaust cork. Your pre-turbine EGTs will be huge, pre-turbine backpressure will be 30+ PSI and if you try to stretch the engine/turbo, it will pop. Even a .84 T3 will quickly drop efficiency after 5500 RPM on a stock port engine...
Especially with a "race port" (what does that mean, exactly?).
Just warning you.
The reason I ask is because if it really is a .63 T3, then it will be great until 4500 RPM and after that, will just be an exhaust cork. Your pre-turbine EGTs will be huge, pre-turbine backpressure will be 30+ PSI and if you try to stretch the engine/turbo, it will pop. Even a .84 T3 will quickly drop efficiency after 5500 RPM on a stock port engine...
Especially with a "race port" (what does that mean, exactly?).
Just warning you.
I wont run anything smaller that a .96 non divided housing on a rotary and that is on a T4 P trim,even the stock S4 and S5 turbo housings are close to a 1.00 AR,something to think about if you do have a RACE PORT.
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Joined: Jun 2007
Posts: 421
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From: GARDENA, The Freeway City
^^with water injection my set up made 350 hp and 275 tq @ 12 psi....very conservative boost.^^
full boost from 4k all the way to 8k...intake temps never saw pass 120f on the dyno..might upgrade
to ls2 coils and call it a day, but im pretty happy with it now...will post pictures and dyno graph
when I can.
full boost from 4k all the way to 8k...intake temps never saw pass 120f on the dyno..might upgrade
to ls2 coils and call it a day, but im pretty happy with it now...will post pictures and dyno graph
when I can.
yea, i would also suggest ditching the T3 .69 a/r turbine housing. it will go a step further than corking up the exhaust, EGTs can spike with that straw of a snail before the AI comes online after a spool up. high EGTs and backpressure can result in detonation.
Joined: May 2006
Posts: 3,881
Likes: 3
From: Jacksonville, Tampa & Tallahassee
Awesome build!...again.
True, but your v-mount is a work of at in its own right, and far better than any to mount (pay no attention to the motor its attached to lol)
True, but your v-mount is a work of at in its own right, and far better than any to mount (pay no attention to the motor its attached to lol)
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Joined: Jun 2007
Posts: 421
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From: GARDENA, The Freeway City
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