12# lower pulley question
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Senior Member
Joined: Jun 1999
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From: Wallingford, CT
12# lower pulley question
when installing a 12# lower pulley on my 97 F-150 (4.6L) for the ATI Procharger, it appears it will conflict with the fan pulley. has anyone had to downsize this in order to get the bigger 12# pulley to fit??
help!!!
help!!!
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Joined: Jun 2002
Posts: 139
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From: Houston
WSECTION,
It shouldn't interfere with the waterpump pulley. It bolts onto the crankshaft which inturn extends it out past the pulley.
Hope this helps,
Bill
Levi,
I am running the 12# lower pulley. I am in Ft Worth working a contract so if you want to see it first hand let me know. I may have a few questions about the SCT tuner. I just got mine and am in the process of learning the MAF transfer function. Also I had the Lightning MAF, but took it off due to a overrich condition and rolling idle. I think the rolling idle was caused by the richness. The only way I got the A/F ratio down when I had it tuned with the diablo chip by closing the the boost bypass down by 1/2.
Bill
It shouldn't interfere with the waterpump pulley. It bolts onto the crankshaft which inturn extends it out past the pulley.
Hope this helps,
Bill
Levi,
I am running the 12# lower pulley. I am in Ft Worth working a contract so if you want to see it first hand let me know. I may have a few questions about the SCT tuner. I just got mine and am in the process of learning the MAF transfer function. Also I had the Lightning MAF, but took it off due to a overrich condition and rolling idle. I think the rolling idle was caused by the richness. The only way I got the A/F ratio down when I had it tuned with the diablo chip by closing the the boost bypass down by 1/2.
Bill
Last edited by outdare; Mar 1, 2004 at 06:42 PM.
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Joined: Feb 2004
Posts: 107
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From: Texas
Bill,
I sent you an email. You should be able to control any rolling idle with the SCT stuff. I've seen some rolling idle on my truck (when, uh... experimenting
) but it's always been because I'm overrich and the eec was chasing the fuel trims. The maf xfer took me awhile but I finally got it running good. You do need a wideband of some sort though to do it right I think. Your WOT stuff anyway.
Levi
I sent you an email. You should be able to control any rolling idle with the SCT stuff. I've seen some rolling idle on my truck (when, uh... experimenting
) but it's always been because I'm overrich and the eec was chasing the fuel trims. The maf xfer took me awhile but I finally got it running good. You do need a wideband of some sort though to do it right I think. Your WOT stuff anyway.Levi
Originally posted by outdare
Levi,
I am running the 12# lower pulley. I am in Ft Worth working a contract so if you want to see it first hand let me know. I may have a few questions about the SCT tuner. I just got mine and am in the process of learning the MAF transfer function. Also I had the Lightning MAF, but took it off due to a overrich condition and rolling idle. I think the rolling idle was caused by the richness. The only way I got the A/F ratio down when I had it tuned with the diablo chip by closing the the boost bypass down by 1/2.
Bill
Levi,
I am running the 12# lower pulley. I am in Ft Worth working a contract so if you want to see it first hand let me know. I may have a few questions about the SCT tuner. I just got mine and am in the process of learning the MAF transfer function. Also I had the Lightning MAF, but took it off due to a overrich condition and rolling idle. I think the rolling idle was caused by the richness. The only way I got the A/F ratio down when I had it tuned with the diablo chip by closing the the boost bypass down by 1/2.
Bill
