Saleen340

I want to change out my 07 SC's pully to get more boost. Does anyone know how much boost/HP i can safely add without any issues? IstheHP enough to validate voiding the warranty.


[IMG]local://upfiles/70587/6A147FD1476B4718A172EA451BDF4B29.jpg[/IMG]

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2007 Saleen 281SC
Convertible
#340

eviligloo

I'd say wait until the warranty is up before you mod the pulley. You can only go so far without forging the bottom end....and by that point you might as well do a couple things all at the same time.

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2002 S281SC Saleen Mustang Speedster
Convertible
66mm Chicane Pulley
SVT Focus Fuel Pump
3.73 gears
NGK spark plugs
PIAA fog lights
SCT tune

Chuckdoc

I agree. Without forged internals, you're better off leaving it like it is. Which is not bad in the first place! You can mess with the tune, etc.. but a pully swap will take you into 500+ territory, and I don't think you can get there (for long) without forged internals.

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2007 Saleen Parnelli Jones
#57 of 500
302 V8 - 400HP
The Ultimate PJ Thread

PolkThug

Seems like plenty have popped at 10psi and up. Of course there are some that are running that high and are OK, BUT on my vehicle I wouldn't go past 9psi on the stock bottom.

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S281 E

450RWHP seems to be the breaking point for our S197's.

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Twin Turbo
What else is needed...

Saleen05797

I'm planning on running 10 psi and about 486 rwhp on my stock motor. Is that pushing it too much? I was told that 486 rwhp will be fine for a while but ANY more than that the engine cant take. But from reading this topic, it looks like I can't run @ 10 psi or go past 450 rwhp?

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'05 Saleen Mustang - KB Intercooled Supercharger @ 11 PSI 458 RWHP, 4.10 gears, KB Boost-A-Pump, 60 LB injectors, custom sound system, more
Finance

Red_Devil

JDM can probably put you at 12 psi and around 460-480RWHP on the stock block that should be mostley safe. I wouldnt recommend going that high with any other tune other than JDMs though.

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Jared Chavez
Eastern Regional Representative - Saleen SpeedLab
04 Saleen S281 #381
Saleen Series IV S/C, Saleen 2.875 Pulley, 05 Fuel Pump, Saleen 14" Brakes, JDM Air Kit, 90mm MAS Air, 42 lb Injectors, American Racing Longtube Headers + Catted X-P

Saleen05797

Well I'm having a custom tune made. The shop that I get my work done at is probably one of the best places in central Ohio for mustang performance... I just want to make sure 10 psi and 486 rwhp won't blow my engine

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'05 Saleen Mustang - KB Intercooled Supercharger @ 11 PSI 458 RWHP, 4.10 gears, KB Boost-A-Pump, 60 LB injectors, custom sound system, more
Finance

PolkThug

Make sure you get the colder sparkplugs, HT0's.

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nrcollectibles

Idon't know of anyone who has had trouble running the JDM 3.4 pulley. That adds 6 lbs of boost.

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2005 S281SC #886
Extreme Rainbow Paint (1 of 1)
Modifications:
3.4 pulley, XCal-2 tuned by JDM, 39# injectors, Kooks LTs & X-Pipe, Steeda CAI, Extreme inlet tube, 90mm MAF
446.6 rwhp = 525 fwhp
424.7 lbs torque = 500 lbs at flywheel