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07-30-2007, 11:23 PM
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FIA rated bubble wrap!
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Shots of the broken alternator belt and aftermath, sigh
Some shots of the broken belt and wire harness carnage.
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1986 Porsche 944 sp1 track whore.
Daily driver: 2007 Toyota Tundra SR5 Long Bed Ext Cab
Wifes car: 2002 Mercedes S430
iRacing: AMD x4 260 + GT240
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07-30-2007, 11:24 PM
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Join Date: Jan 2006
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One more from the bottom
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1986 Porsche 944 sp1 track whore.
Daily driver: 2007 Toyota Tundra SR5 Long Bed Ext Cab
Wifes car: 2002 Mercedes S430
iRacing: AMD x4 260 + GT240
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07-30-2007, 11:37 PM
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At 10/10ths
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Join Date: Jan 2006
Location: Houston TX, USA
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looks like it was just the fan wiring... right?
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Ken Brewer
1991 Toyota MR2 NA - time trialer retired to street car duty
1994 Toyota MR2 NA - former SSB car, building for NASA PT & SCCA IT
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07-30-2007, 11:44 PM
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Yep
4 wires that are important.
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1986 Porsche 944 sp1 track whore.
Daily driver: 2007 Toyota Tundra SR5 Long Bed Ext Cab
Wifes car: 2002 Mercedes S430
iRacing: AMD x4 260 + GT240
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07-31-2007, 11:03 AM
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Super Moderator
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Join Date: Jul 2006
Location: NC
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Well, looks like it shouldn't be too hard to fix, but you may want to do some looking around. I suspect that belt was not changed during the build, which means other belts and hoses probably weren't either. Might be worth doing.
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10-15-2007, 10:01 AM
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I'll add the conclusion of this here. The belts broke again at Road America over the weekend and after some sleuthing, it turns out the problem is the pulleys are not matched. The engine crank pulley takes a 5 rib belt which is correct for 944s built before 85.5 or June 85. But, the alternator pulley takes a 6 rib belt which is correct for 944s built after that time. I can only put on a 5 rib belt which means it's not supported on the alternator as it's expecting a wider belt. I just gotta source a pulley for the alternator and then this shouldn't happen again.
__________________
1986 Porsche 944 sp1 track whore.
Daily driver: 2007 Toyota Tundra SR5 Long Bed Ext Cab
Wifes car: 2002 Mercedes S430
iRacing: AMD x4 260 + GT240
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10-16-2007, 12:12 PM
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Green Group
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Join Date: Oct 2007
Location: WI
Posts: 23
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Quote:
Originally Posted by billy
I'll add the conclusion of this here. The belts broke again at Road America over the weekend and after some sleuthing, it turns out the problem is the pulleys are not matched. The engine crank pulley takes a 5 rib belt which is correct for 944s built before 85.5 or June 85. But, the alternator pulley takes a 6 rib belt which is correct for 944s built after that time. I can only put on a 5 rib belt which means it's not supported on the alternator as it's expecting a wider belt. I just gotta source a pulley for the alternator and then this shouldn't happen again.
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If you can use them, I have some extra pulleys. I checked and took some pictures, the alt. pulley is five rib. These are from my '88 Corvette which I put under drive pulleys on. Maybe there is a three piece under drive pulley set for your car, or you could measure it and a place would find the right one you need. I was going to throw these pulleys out so no fee if you can use them.
and
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Andrew
'88 Corvette: coupe, Z52, auto, 3.07, A/O intake, K&N, free mods, ported plenum, TPIS big mouth base, AS&M runners, brake ducts, C5 calipers, Carbotech pads, lowered, C5 silver thin spokes four 18x9.5", LT1 injectors, TPIS headers, March under drive pulleys.
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