Technical Tips > Engines - Carbies - Exhausts - Dissys

PS pulley hitting on front x-member

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wabco40:

--- Quote from: sabre on January 15, 2016, 06:45:04 AM ---Hi Wabco.  Is that a special pump or did you have it modified to spin backwards for the serpentine belt?

--- End quote ---

Hi Sabre,

The pump runs in the normal direction (clockwise when looking from the front of the engine). The belt goes from the crank pulley up to the water pump, then across to the alternator, down and around the inside of the idler pulley and then around the outside of the PS pump pulley back to the crank.

Scott:
I did some measuring this morning and the belt looks to be 110mm from the block and my PS pulley is 150mm in diameter.  I'll loosen the bolts and move it in on the weekend.  Then I'll need a new belt I guess.  I wish all my issues were this simple to fix (If this does fix it that is).

Scott:
I just had a quick look.  Even at full movement away from the frame, there is still only 3mm.  I just pulled off the pump and bracket.  I think Ill cut it and re-weld the mount point a little higher.  As I have the alternator on the other side there won't be any issues with getting the lid off.

sirfixalot:
If you have a long water pump that would put pulleys  too far forward. The pump pulley looks too big in diameter also. Corvette water pump & pulleys are unique to corvette the boss on pump is 3/4"  from memory. There are different offsets on power steer pump pulley also

Scott:
The ps pump runs solo off the crank and the belt is as close to the block as possible.  It's a 6 inch pulley which is standard.  I realised last night I don't have the ps adjuster bracket.  There was a random bracket there that doesn't fit. I think the issue is that I dropped the engine as low as I could to help with tailshaft angles and the ps pulley has minimal clearance at the best of times.

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