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.....
water pump pulley - loose belt?
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- Seight-V8
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Re: water pump pulley - loose belt?
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.
Tom.
If you turn the pulley it should turn the engine over.
Tom.
Dax Rush 4.6 supercharged V8 MSII
- SimpleSimon
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Re: water pump pulley - loose belt?
If the belt is incorrectly tensioned (slack) the alternator will protest way before the water pump i.e screaming its head off especially when a load is applied to the battery post starting or headlights heater on etc
TVR Chimaera RV8 Mods & Megasquirt
Re: water pump pulley - loose belt?
Belt wrap around the pulley is also very important - do you have enough wrap?
Post a photo of your belt routing - I've seen quite a few belt routes with the water pump barely deflecting the belt and this is not enough.
Tom.
Post a photo of your belt routing - I've seen quite a few belt routes with the water pump barely deflecting the belt and this is not enough.
Tom.
Dax Rush 4.6 supercharged V8 MSII