Greddy Turbo Kit !DYNO!
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From: San Diego, CA
I'm still waiting on videos from my friend, as for the tune, it was tuned for my car, but its pretty conservative tune, mainly due to the fact it had to be safe. I believe its close to 10.5-11 across the board.
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From: Riverview
Originally Posted by honda9krpm,Apr 29 2007, 08:54 PM
hp=rpm x torque x k
where k is a constant
For hp to drop significantly one would expect a significant drop in torque at the top rpm band, to compensate for the rising rpm. It would be good to see the rest of this dyno curve.
I have greddy turbo on my skyline gtr and the s2k so I might be able to answer this
. I have 2 of the same turbo on my 2.6L gtr. The car currently has 20psi of boost at 4.5-9kprm and the turbo shouldn't have any problem pushing out a bit more.
However, if there is significant power drop at top rpm on the f20c, then the turbo might be at it's max efficiency range. Squeezing more boost out of it might be a bit unsafe for a number of obvious reasons eg higher intake & exhaust temps, higher exh pressures etc etc. Upgrading to the next turbo, a T618Z with internal gate, is easy anyway coz I think they have similar flanges.
Overall this kit looks great for the cost. The only thing I would add is an oil cooler to keep engine bay temp cooler.
BTW does greddy use an oil restrictor with this turbo on the f20c?
where k is a constant
For hp to drop significantly one would expect a significant drop in torque at the top rpm band, to compensate for the rising rpm. It would be good to see the rest of this dyno curve.
I have greddy turbo on my skyline gtr and the s2k so I might be able to answer this
. I have 2 of the same turbo on my 2.6L gtr. The car currently has 20psi of boost at 4.5-9kprm and the turbo shouldn't have any problem pushing out a bit more. However, if there is significant power drop at top rpm on the f20c, then the turbo might be at it's max efficiency range. Squeezing more boost out of it might be a bit unsafe for a number of obvious reasons eg higher intake & exhaust temps, higher exh pressures etc etc. Upgrading to the next turbo, a T618Z with internal gate, is easy anyway coz I think they have similar flanges.
Overall this kit looks great for the cost. The only thing I would add is an oil cooler to keep engine bay temp cooler.
BTW does greddy use an oil restrictor with this turbo on the f20c?
HP= (TQ)(RPM)/5252
That is the correct formula.
As Tq drops at the top it is not unheard of to see HP still increase simple because the rpms are still increasing.
And my opinion of GReddy kits...save your money. Interal gates are about as good as a one legged man in an a$$ kicking contest. You will experiance creep and spikes when you start making power. They simpley can not flow as well as exteral dumps. There is a reason why large turbos are not avalible with internal gates. GReddy kits are designed and marketed for the person that doesn't care about performance, they just want a blow off valve.