From boost to ______

[jdslow300]

So I have a Powerhouse 67mm turbo on my car running 9lbs of boost. I bought the kit looking for street and drag performance, since then, my tastes have evolved a little.

The car will be heading to Blow By Racing in the coming months for a load of work, including removing the turbo, strengthening internals and either.....

A) a 1 for 1 swap with a Vortech V2 S Trim
B) Pass on the turbo but buy another FI kit more friendly to the track
C) a more in depth N/A build

Suspension is a work in progress, brakes, lines and cooling will come as well.

No matter what I need to drop the turbo, it's just too much heat. In light of the options, what direction do you gearheads think I should turn? I would like to stay FI, but what kit would be best suited to the track?

Thanks in advance guys.

 

[pcdrj]

I 'm running a Saleen s/c which was done long before i ever tracked the car. It tends to run high IAT's and gave me lots of headaches last year. I'm on the fence right now about removing it. Between the S/C, I/C, and removal I estimate 150#-200# can be removed from the nose. An N/A setup should be able to make a reliable 375 hp.

If the 5.0 was an easy swap I'd do in in a heart beat.

 

[jdslow300]

Thanks for the input, I'm not stressing weight reduction to that level yet. I was hopin there would be some boosted motors in here with positive experiences.

 

[Vapour Trails]

A centrifugal supercharger would probably be best for track use of all the FI options. That being said I had no issues with the whipple in short sessions.

If you are serious about track use in the future I would drop FI all together though.

 

[Sleeper_08]

I've been running the Roushcharger since the car was new and am actually more concerned about under hood temps in stop and go city driving than on the track. This is my fourth track season with the car.

The Roushcharger appears to solve the heat problem by throwing fuel at it when running hard at high revs. I've had track days where I've gone thorough almost three tanks of gas. I'd swear that going up the back straight at Mosport when I am in fourth gear the fuel gauge is going to the left about as fast as the tach is going to the right.

Last weekend was the first time I've seen the temp idiot gauge come off centre but that was in the equivalent of 91F with humidity and with the AC on full blast. Overheating of the driver was a bigger problem than overheating of the engine.

 

[Surfstang2020]

I like the procharger kits

 

[Towelly]

You won't see cooler intake temps per pound of boost with any other type of forced induction aside from nitrous. Why not revise your current turbo kit and save for a forged bottom end?

I would think a small, billet, ball bearing turbo would be right at home on a road coarse.

 

[19COBRA93]

I think by "heat" he's referring to underhood temps, not discharge temps.

However, even a small billet wheel ball bearing turbo wouldn't be road coarse friendly IMO. Just too much torque when the boost comes on, and the boost is too unsettled at part throttle/load. You can't just ease into the throttle coming out of a turn and have the power come on smooth.

 

[jdslow300]

I think by "heat" he's referring to underhood temps, not discharge temps.

However, even a small billet wheel ball bearing turbo wouldn't be road coarse friendly IMO. Just too much torque when the boost comes on, and the boost is too unsettled at part throttle/load. You can't just ease into the throttle coming out of a turn and have the power come on smooth.

Exactly, I've already gone into the grass powering out of a tight corner, I don't want to risk that being a wall.

Interesting words about the rouscharger, looks like a centri is getting the most votes though.

Vapour how do you like the whipple on track. I'm not looking for a hardcore road racer, but a street car that can run in SCCA type events.

 

[Vapour Trails]

Vapour how do you like the whipple on track.

Well it held up fine but the sessions were short < 10 minutes, I was running a mere 7 pounds of boost and the weather was cool.

Somewhat like a turbo you have to be careful leaving corners because the torque is like an on/off switch with the on/off point being 0 psi.