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#1 |
Registered User
Join Date: Dec 2013
Location: Phoenix Arizona
Posts: 2
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Hi everyone,
I was wondering if anyone has experienced this or had it happen to them. We're talking about a 64 truck with a stock 230 inline 6. Today my water pump pulley decided to separate itself from the water pump shaft. The water pump shaft spins easily, I do not believe it locked up. I have had many old cars and trucks and have never seen this happen. Any ideas as to the cause? Metal fatigue on a 50yr old pulley? Also, does anyone know what would be a good replacement for this pulley. Inline 230's are not that plentiful in the boneyards. It measures 7 1/8 in diameter. Thanks ![]() |
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#2 |
Registered User
Join Date: Mar 2001
Location: RADFORD, VA
Posts: 2,651
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Re: Water pump pulley self destructed-HELP!
WOW never saw that b4 either, I guess it could of had a hairline crack that finally give up.
Hopefully you can find one on the parts board, I would think they would be plentiful. As there were prolly more six's than 8's..
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#3 |
Registered User
Join Date: Feb 2013
Location: central California
Posts: 2,737
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Re: Water pump pulley self destructed-HELP!
It's happened to me before on a 283. The pully wasn't quite as torn up as yours but I also had no obvious explanation. Got myself a Chinese made chrome one at Napa, painted it black and it's been good, for many miles now. Napa counter guy asked me if I was over tightening the belt but I didn't really think so.
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#4 |
Chevy addict
Join Date: May 2012
Location: Iron Ridge, WI
Posts: 1,085
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Re: Water pump pulley self destructed-HELP!
For this reason they installed a re reinforcement plate on the hub of the water pump. Check to make sure your water pump bearings are good and a new belt. Do not over tighten.
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#5 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Water pump pulley self destructed-HELP!
I may be wrong but I was thinking that the small block short water pump pulley is the same as the I6 water pump pulley. That might be something to check into.
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#6 |
Registered User
Join Date: Feb 2014
Location: Pocahontas Arkansas
Posts: 684
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Re: Water pump pulley self destructed-HELP!
yes there is a reinforcement plate washer whatever on many. Metal fatigue. after a certain amount of time metal wears out and cracks. the old semi trucks it used to set in at about a million miles hairline cracks would begin to appear around rivets & bolt holes. leaf springs would break. With the air ride suspension & radial tires they last longer today. There are harmonics at work that fatigue out things like water pump & alternator bushings & bearings. The fan belts & pulleys are not in perfect balance. That water pump pulley is a stamped and formed part. metal is stretched and forced to take a unnatural shape. Having the belt groove so far from the center line of the hub is poor engineering. Its a wonder that it works,
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#7 | |
Registered User
Join Date: Dec 2013
Location: Phoenix Arizona
Posts: 2
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Re: Water pump pulley self destructed-HELP!
Quote:
Unfortunately, I looked on my pulley and cannot find a stamping with a part number. Last edited by dr.delco; 03-23-2014 at 11:07 AM. Reason: adding info |
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#8 |
Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Water pump pulley self destructed-HELP!
Mine did the same and hairline cracked. Got a new one off of a 283 v8 same and all and put a pulley spacer shine behind it and worked. Mine had a washer to space it off the hub to keep it from rubbing against the water pump bypass hose and that's what cracked the old one. Too small a shim will put pressure on the shims area and do that. I have a 292 so it was fun to hear it scrape against the harmonic balancer and leave a nice Shiney line on the back of it not to mention see coolant spitting out under pressure when it finally went through the bypass line.
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That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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#9 | |
Registered User
Join Date: Nov 2011
Location: fayetteville nc
Posts: 10,338
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Re: Water pump pulley self destructed-HELP!
Quote:
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