March pulley question for my GT.

Lizard King · 04-01-2004, 11:24 PM

I am reading on the website about their pulleys and I have a few questions.

link: http://www.marchperf.com/pg32.html

1. When the talk about S.F.I. FLUID DAMPENER and the 'non labelled SFI ones' ... what the hell is the difference? Why are they so much more?
2. What do you think of their claim of 12WHP? I have seen Steeda's claim at 8WHP for theirs... which even to me seems a bit high.

Any help appreciated here.

Oh ... how hard are these pulleys to install?

Mustang92 · 04-06-2004, 10:45 AM

Quote:

1. When the talk about S.F.I. FLUID DAMPENER and the 'non labelled SFI ones' ... what the hell is the difference? Why are they so much more?

The SFI stamp would be the big difference since you need one once you hit 10s. As for the difference in the pulley who knows but whatever it is it apparently costs more. If you don't need an SFI approved pulley then I wouldn't worry about it. I would not bother with any kind of piggyback type pulley though.

Quote:

2. What do you think of their claim of 12WHP? I have seen Steeda's claim at 8WHP for theirs... which even to me seems a bit high.

Just like any other company that claims results take it with a grain of salt.

If I could have found these at the last race I would have bought theirs instead of Steeda. My Steeda crank pulley is now 3 years old and litterally separated on my car this past weekend. I had to buy another one between rounds and change it out in order to keep racing. The new one is SFI rated and works fine but I'm not happy that my original one feel apart.

Bill

xxxBlakexxx · 04-06-2004, 07:10 PM

I have wondered the same questions. What does SFI mean? I know we should avoid pigg-back. What exactly does that mean?

blue00gt · 04-06-2004, 07:43 PM

http://www.sfifoundation.com/

The piggyback style pulleys require that you remove and re-use your factory rubber damper rather than having the new crank pulley and damper come as one piece.

explicitone · 04-07-2004, 04:32 PM

Quote:

Originally posted by xxxBlakexxx
I have wondered the same questions. What does SFI mean? I know we should avoid pigg-back. What exactly does that mean?

SFI is a saftey rating used in most racing bodys

04-01-2004, 11:24 PM	#1
Lizard King midnightruns.com Join Date: Dec 2000 Location: Ottawa, Ontario, Canada Posts: 584	March pulley question for my GT. I am reading on the website about their pulleys and I have a few questions. link: http://www.marchperf.com/pg32.html 1. When the talk about S.F.I. FLUID DAMPENER and the 'non labelled SFI ones' ... what the hell is the difference? Why are they so much more? 2. What do you think of their claim of 12WHP? I have seen Steeda's claim at 8WHP for theirs... which even to me seems a bit high. Any help appreciated here. Oh ... how hard are these pulleys to install? __________________ NEW CAR! - 2002 GT TrueBlue - Best Stock ET - 13.77 Old Lizard - 2000GT Electric Green - Best ET STOCK: 13.662 @ 100.2MPH

04-06-2004, 07:10 PM	#3
xxxBlakexxx Registered Member Join Date: Sep 2003 Location: Mountaintop, PA Posts: 634	I have wondered the same questions. What does SFI mean? I know we should avoid pigg-back. What exactly does that mean? __________________ "Children should not get cancer, but they do!" Help a child with cancer at www.homeoftheirown.org My Stang: 2000 Mustang GT Vert - Steeda Tri-Ax Shifter; C&L Plenum; BBK 75 mm TB; Steeda Strut Tower Supports; Black "Deep Dish" Bullet Wheels; FRPP 4.10's; Steeda Subframes; SLP Catback & SLP Catted X-Pipe; SCT 4 Position Chip with 3 custom tunes; Steeda CAI; Venom-1000 Nitrous; Roush Stage 3 Body Kit; Bullet Suspension Package (on the way)

04-06-2004, 07:43 PM	#4
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	http://www.sfifoundation.com/ The piggyback style pulleys require that you remove and re-use your factory rubber damper rather than having the new crank pulley and damper come as one piece. __________________ Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s

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