water pump and crank pulley alignment

toughy V8 · Post by **toughy V8** » Sat Jan 06, 2007 6:10 pm

anybody had problems with there water pump and crank pulley not lining up? im throwing belts off when im at high revs. had a look at another engine today and its pulleys werent spot on but they were a lot closer than mine.

kev_the_mole · Post by **kev_the_mole** » Sat Jan 06, 2007 6:18 pm

If the belt's throwing off then it's stretched and it won' be much good if you're re-using it. It could be under-tensioning, too much load or a duff or cheap belt (same thing really).

Cheers,

Ian

toughy V8 · Post by **toughy V8** » Sat Jan 06, 2007 6:27 pm

i had three brand new belts on it (gates) and it just threw them offive tried tensioning the belts at different tightness but no luck, doesnt any body do shims move the water pump pulley out?

john 215 · Post by **john 215** » Sat Jan 06, 2007 6:37 pm

A freind of mine circuit races a TR7 V8 and was plagued by the same problem,he was using the SD1 mounting of the alternator,swapped to P6 mounting ie.lower down which gives a shorter run of the belt to the alternator and solved his problem.I have also been told there are different water pump pulley of various depths,not 100% sure though.

John.