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Old 10-25-2008, 09:26 AM
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Default Jesel belt drive installation

After my recent issues with destroying a timing gear set, I decided to go with a Jesel Belt drive. I have to say, the kit fit perfectly and was a breeze to install. The problem is, my circulator water pump hits the belt. Before you say go with a cross over, I cant, I run closed cooling. I need 1/2" additional clearance, easy enough to do with either a 1/2" spacer or the long style water pump. BUT, what the hell do I do for my stock Merc serpentine pulley? I looked around at pulley manufacturers and found nothing that would work. I happen to have a pulley from a 575 SC ( thats not mine ) it has a 1 1/2" offset from my pulley. That would work with either a 1 1/2" spacer, or the long style wate pump but Merc gets over $200 for that pulley. Anyone have of a better solution?

Last edited by Vinny P; 10-25-2008 at 09:37 AM.
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Old 10-25-2008, 10:28 AM
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Cant you mashine a spacer for the pulley you have and space out everything 1/2 inch ?

SS 1/2 inch round and drill it so it fits between the crank and pulley ????
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Old 10-25-2008, 11:40 AM
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Use the 575 pully......so what if it's not yours..... oh wait nevermind....... lol.......
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Old 10-25-2008, 11:56 AM
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Originally Posted by Here's Johnny
Use the 575 pully......so what if it's not yours..... oh wait nevermind....... lol.......

Yeah... They're yours. Maybe you wont notice one missing?
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Old 10-25-2008, 11:59 AM
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Originally Posted by Vinny P
Yeah... They're yours. Maybe you wont notice one missing?
At least not until May.......lol....... call me in the office when you get a chance.....
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Old 10-25-2008, 12:06 PM
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Originally Posted by Vinny P
Yeah... They're yours. Maybe you wont notice one missing?
Your pully fell off and rolled under that table over there and I can't find it anywhere. Damndess thing I ever saw. Oh here it is, how in the heck did it get get 1 1/2" narrower in that short off a roll. Sh!t happens I guess?
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Old 10-25-2008, 01:03 PM
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Originally Posted by Vinny P
I need 1/2" additional clearance, Anyone have of a better solution?
I ran into the same problem. Solved it. Question: What block do you have? GM Dart Merlin other? Do I assume that you have a Hyd roller cam?
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Old 10-25-2008, 03:30 PM
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Originally Posted by ROTAX454
I ran into the same problem. Solved it. Question: What block do you have? GM Dart Merlin other? Do I assume that you have a Hyd roller cam?

I have a Dart Big M , running a solid roller cam. Any help would be great.
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Old 10-25-2008, 04:43 PM
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Somebody probably has a take off one from an upgrade to a crossover system and more hp.
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Old 10-25-2008, 09:14 PM
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Vinny, Is there room to move the pulley back 1/2", or will it hit. Say you find a pulley that is 1/2" deeper, or you use the 2" deeper pulley that John loaned you, and you put a 1 1/2" spacer in the pulley, Will the pulley rub on the body of the water pump?? Just a thought.

Dick
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