weirdness!
Thread Starter
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Joined: Mar 2007
Posts: 69
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From: Fort Worth Texas
Yes the parts are the same, and no it doesnt make sence thats why i am on here asking lol.. I will have pictures tomorrow, its easter today so no working on the car lol.
Cruising
Joined: Mar 2008
Posts: 11
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From: Harrisburg Oregon
Those are bigger pulleys then mine has on it. do you have other pulleys laying around? thinking maybe you have a mix up. Being you had an inch gap before and the old pump still makes them rub I dont have a clue. All I can think of is spin the engine over and watch the bottom pully making sure it runs true. There is nothing that can make that big of difference besides the wrong pulleys
Instructor
Joined: Aug 2007
Posts: 224
Likes: 1
From: SHERMAN TEXAS
my 75 has always had very minimal space between pulleys. maybe a 16th of an inch or less. my pulleys seemed to touch also until i tightened them with all bolts then they seemed to center perfectly. you also want to make sure no gasket material is left and tighten the water pump bolts so that it sits flush with block. here is a pic of mine
Instructor
Joined: Aug 2007
Posts: 224
Likes: 1
From: SHERMAN TEXAS
just measured and top pulley without smog pump pulley measures 6 1/4 inches and bottom pulley measures 7 3/4. both measurement were taken from largest diameter lip.. hope it helps oh another idea maybe bolt holes in water pump are larger than normal letting it sit farther down. also these are the original pulleys that came with the car
Last edited by colin75; Mar 25, 2008 at 01:58 AM.
Drifting
Joined: Aug 2007
Posts: 1,924
Likes: 6
Those are bigger pulleys then mine has on it. do you have other pulleys laying around? thinking maybe you have a mix up. Being you had an inch gap before and the old pump still makes them rub I dont have a clue. All I can think of is spin the engine over and watch the bottom pully making sure it runs true. There is nothing that can make that big of difference besides the wrong pulleys
the after market pump center (of the pump part itself) sits lower in relation to the mounting bolts on the engine than the stock pump did.
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Thread Starter
Advanced
Joined: Mar 2007
Posts: 69
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From: Fort Worth Texas
Cruising
Joined: Mar 2008
Posts: 11
Likes: 0
From: Harrisburg Oregon
I thought the aftermarket pump was lower also but he tried the stock pump and the same problem. The pump pulley holes shouldnt be an issue because it should center on the pin in the middle as well as the dampener pulley. Wish you lived close I would check it out. Have you turned the engine over and watched the lower pulley?