water pump pulley - loose belt?

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Location: Stockton-On-Tees

water pump pulley - loose belt?

Post by Seight-V8 » Thu Oct 17, 2019 6:57 pm

Hello all,

Should I be able to move the water pump pulley by hand on my GEMS efi engine??

Thinking the belt isn't tight enough, but as I don't have a belt tensioner on the system, its hard to know what is tight enough.

Have some cooling issues, and I'm not sure the pump is giving 100% if the belt is slipping.

I have heard of people knurling the flat area of the water pulley for extra grip?.....anyone got or done this to good effect?

Its also a new poly 7-rib belt, and I've already tighten it a few times.....

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Re: water pump pulley - loose belt?

Post by SuperV8 » Fri Oct 18, 2019 12:17 pm

No - you shouldn't be able to turn the coolant pump pulley by hand and the belt slip -
If you turn the pulley it should turn the engine over.

Dax Rush 4.6 supercharged V8 MSII

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