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10-08-2011, 06:03 AM | #1 |
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Join Date: Sep 2008
Location: Rock Springs Wyoming
Posts: 56
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is KB's 2.1 kit a 6 rib drive
04 Cobra owner here and was pondering through these pages a bit to check out what people are accomplishing with these cars. I noticed most people are using the KB's 2.1 and rightly so as it gives you a comlete intercooled kit. But I think I noticed that it only uses a 6 rib drive belt system?
I'm guessing if you kept the boost fairly reasonable that belt slip wouldn't be too bad, but say you stepped up the bottom end of your engine later and wanted to pulley up to 15psi or so, would you be OK or would you have to lay down alot of money for 03/04 cobra parts to get an 8 rib drive? Anybody here running in this boost range with the 6 rib set-up? I'm running a D1 procharger set-up on my 01 4wd f150 at around 12 psi with a 6 rib and it always slips on the first throttle stab, but it's kind of like a burn-out at the drag strip, after heating up the belt and pulleys with the slippage from the first romp, she's good to go without any slip, but I also have very good belt wrap on that procharger. I love these mach-1's but I'm pretty sure I'd want more than 10 psi of boost at least someday.
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04 screaming yellow Cobra coupe Steggy stage 4 ported Eaton 4# lower / 2.93 blower pulleys Mac cai / accufab throttle body and inlet BBK longtubes w/xpipe and full exhaust Spec 3+ clutch w/26 spline input shaft upgrade Maxximum motorsports full length subframe connectors. interested in modding an automatic Mach-1 |
10-08-2011, 08:41 AM | #2 |
Soldier for Christ
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
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Re: is KB's 2.1 kit a 6 rib drive
here are some threads that have info on the 2.1L that might help you out
http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 http://www.mach1registry.org/forums/...ghlight=KB+2.1 hope these will help out and the guys with the info on the KB 2.1 chime in ASh
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2001 lazer red v6 Mustang coupe sold in Aug 2006 2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012 2013 grey 6 speed coupe GT Mustang Sold in Feb 2014 2013 RED Dodge Charger R/T Sold Nov 2014 2002 custom Blue 02 Auto Trans AM Sold June 2015 1998 Cobra Black Sold summer 2016 Current 2009 Ford F350 FX4 March 2017 (work truck) 2003 OW 5.0 Mach 1 Aug 2020 ASh |
10-08-2011, 11:38 PM | #3 | |
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Re: is KB's 2.1 kit a 6 rib drive
Quote:
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04 screaming yellow Cobra coupe Steggy stage 4 ported Eaton 4# lower / 2.93 blower pulleys Mac cai / accufab throttle body and inlet BBK longtubes w/xpipe and full exhaust Spec 3+ clutch w/26 spline input shaft upgrade Maxximum motorsports full length subframe connectors. interested in modding an automatic Mach-1 |
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10-08-2011, 11:45 PM | #4 |
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Location: Rock Springs Wyoming
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Re: is KB's 2.1 kit a 6 rib drive
Correct me if I'm wrong here. KB 1.7 and 2.1 are complete kits for the mach1's, stepping up to a KB 2.2 or a whipple 2.3 is basically buying a blower for an 03/04 Cobra and making the mach-1 to Cobra eaton swap prior?
The 2.2 would upgrade you to a 8 rib drive like a Cobra, and I'm guessing that's the bigger meal ticket than the tiny .1 increase in displacement?
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04 screaming yellow Cobra coupe Steggy stage 4 ported Eaton 4# lower / 2.93 blower pulleys Mac cai / accufab throttle body and inlet BBK longtubes w/xpipe and full exhaust Spec 3+ clutch w/26 spline input shaft upgrade Maxximum motorsports full length subframe connectors. interested in modding an automatic Mach-1 |
10-08-2011, 11:48 PM | #5 |
Soldier for Christ
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
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Re: is KB's 2.1 kit a 6 rib drive
to do a KB 2.2 and up will be like what you would have to do to put on a whipple and you will need to do part of the Eaton Swap, i don't know bout the 8 rib thing (haven't looked into that) so you will be spending some extra cash to do a KB 2.2 and up. really if your going to have to do a Eaton swap parts, i would go with a Whipple set up
ASh
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2001 lazer red v6 Mustang coupe sold in Aug 2006 2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012 2013 grey 6 speed coupe GT Mustang Sold in Feb 2014 2013 RED Dodge Charger R/T Sold Nov 2014 2002 custom Blue 02 Auto Trans AM Sold June 2015 1998 Cobra Black Sold summer 2016 Current 2009 Ford F350 FX4 March 2017 (work truck) 2003 OW 5.0 Mach 1 Aug 2020 ASh |
10-09-2011, 09:02 AM | #6 |
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Join Date: Aug 2003
Location: East Haven, CT
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Re: is KB's 2.1 kit a 6 rib drive
The KB 2.1 kit comes 6 rib. The KB 1.7 kit has long been discontinued. The KB 2.2 for the 03-04 Cobra is also discontinued and required all the parts one would need for an Eaton swap. The 2.2 kit that was made for the Mach 1 again is long discontinued (I bought the last one) and was also 6 rib. Any kit meant for the Mach 1 came 6 rib and you had to do your own modifying to make it an 8 rib. Not hard but required a little ingenuity. Whipple makes no kit for a Mach 1. Using a 2.3 Whipple or larger KB from a 03-04 Cobra requires all the parts you would use for an Eaton and when all is said and done will cost between $15,000-$20,000 to do it right.
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2011 Mustang GT Grabber Blue Automatic 2003 Mach 1 Whipple 2.3 718 rwhp 735 rwtq @25 psi SOLD Last edited by Scott McClure; 10-09-2011 at 09:19 AM. |
10-09-2011, 10:27 AM | #7 | |
Soldier for Christ
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
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Re: is KB's 2.1 kit a 6 rib drive
Quote:
ASh
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2001 lazer red v6 Mustang coupe sold in Aug 2006 2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012 2013 grey 6 speed coupe GT Mustang Sold in Feb 2014 2013 RED Dodge Charger R/T Sold Nov 2014 2002 custom Blue 02 Auto Trans AM Sold June 2015 1998 Cobra Black Sold summer 2016 Current 2009 Ford F350 FX4 March 2017 (work truck) 2003 OW 5.0 Mach 1 Aug 2020 ASh |
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10-09-2011, 01:03 PM | #8 | |
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Location: Rock Springs Wyoming
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Re: is KB's 2.1 kit a 6 rib drive
Quote:
__________________
04 screaming yellow Cobra coupe Steggy stage 4 ported Eaton 4# lower / 2.93 blower pulleys Mac cai / accufab throttle body and inlet BBK longtubes w/xpipe and full exhaust Spec 3+ clutch w/26 spline input shaft upgrade Maxximum motorsports full length subframe connectors. interested in modding an automatic Mach-1 |
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10-09-2011, 01:04 PM | #9 |
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Location: Rock Springs Wyoming
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Re: is KB's 2.1 kit a 6 rib drive
Also, how much boost are people getting out of the 2.1 before getting belt slippage on the six rib system?
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04 screaming yellow Cobra coupe Steggy stage 4 ported Eaton 4# lower / 2.93 blower pulleys Mac cai / accufab throttle body and inlet BBK longtubes w/xpipe and full exhaust Spec 3+ clutch w/26 spline input shaft upgrade Maxximum motorsports full length subframe connectors. interested in modding an automatic Mach-1 |
10-09-2011, 02:45 PM | #10 |
Once Bitten-Twice Shy
Join Date: Aug 2002
Location: New Castle, Delaware USA
Posts: 3,370
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Re: is KB's 2.1 kit a 6 rib drive
I'm running the 2.1 at 16psi on a 6 rib setup, except for the Innovators West 8 rib dampener. It requires monkeying around with the KB idler pulleys and a good, high strength tensioner to totally eliminate belt slip. I've had zero belt slip since getting these issues straightened out early on during the break-in process, and that's been about three years now.
Just for the record, Kenne Bell has ceased selling the 99-01 Cobra/03-04 Mach 1 2.1L complete kits due to Ford discontinuing manufacture of the lower intake that they used in the kit.
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Mach1Registry.com Member #7 MCA Member #52787 Nice to meet you, my name's Jim 03 Torch Red Mach 1, 5-speed, IUP Sold on July 21st 2012! 2011 Shelby GT500, Ebony Black, Silver Stripes, 6-speed 550hp 510tq Purchased July 23, 2012! Last edited by TRMach1; 10-09-2011 at 11:17 PM. |
10-09-2011, 09:58 PM | #11 |
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Location: Rock Springs Wyoming
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Re: is KB's 2.1 kit a 6 rib drive
trmach 1, could you please say the same thing without the pictures so I can read your words. The pictues slow my computer down real bad and I have to scroll back and forth for 10 minutes to get a sentence, thank you though.
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04 screaming yellow Cobra coupe Steggy stage 4 ported Eaton 4# lower / 2.93 blower pulleys Mac cai / accufab throttle body and inlet BBK longtubes w/xpipe and full exhaust Spec 3+ clutch w/26 spline input shaft upgrade Maxximum motorsports full length subframe connectors. interested in modding an automatic Mach-1 |
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