Thread: Problem with radiator cooling

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Unless I'm realy wrong here the serpinten pumps run backwards from standard pumps but they are made different internaly so the flow is the same.If the thermostat says "To Rad" thats the way it goes. It realy isn't rocket sicence

Originally Posted by cffisher

Unless I'm realy wrong here the serpinten pumps run backwards from standard pumps but they are made different internaly so the flow is the same.If the thermostat says "To Rad" thats the way it goes. It realy isn't rocket sicence

you are right, but Chevy did make reverse cooling 305's and 350's, I thought they were '96 up Vortechs only, but I'm not shure on that.

the thermostat wax ball has to be facing coolant at all times, otherwise the stat would never open up, as it would never get hot, so it would be facing the intake if standard flow, and facing stat housing if reverse flow.

Originally Posted by cffisher

Unless I'm realy wrong here the serpinten pumps run backwards from standard pumps but they are made different internaly so the flow is the same.If the thermostat says "To Rad" thats the way it goes. It realy isn't rocket sicence

I agree but I am wondering if it was in the wrong way and thats why it got pushed up into the thermostat housing. I am tempted to install in with the spring up ,but it just not what I am used to .

Denny wish you posted 10 min sooner I just went to the shop to look in my book I thought I was loosing it. . The only thing I'd have to add is GM recomends at least a 50% mix and not more than 75% antifreeze.

PS yes those gloves are coooool

Ya thats the way I just put it ,spring down.It working.
I did mix the green with the orange antifreeze if that makes a difference with no balls floating .So,
I figure I am going to drain all the fluid and start over with a 50/50 mix.I appreciate all your help.

Im glad its working for ya now, you were even starting to get me confused for a minute there... Yup...good thinking, drain it all out and start over, that way you know for sure. Maybe while your mixing it in the pails check it before pouring it back in, might save you from draining some back out again to add more water or atifreeze.

If you re read all the replies on here, you were starting to get most of us thinking on this one, and thats usually a good thing.....

Originally Posted by BigTruckDriver

I did mix the green with the orange antifreeze if that makes a difference with no balls floating.

You shouldn't mix different kinds of antifreeze. They have different chemicals that may cause other problems when they're mixed together. Your tester with the little balls is probably calibrated for ethylene glycol antifreeze, and when you mix the two types together the tester won't give you accurate results! Does the tester say on it what type of antifreeze it's made for? What chemicals are in the green and the orange antifreezes? Ethylene glycol or propylene glycol?

The water will flow the same direction thru the engine whether the belts are the standard "V" belts, or the serpentine belt. The internal design of the waterpump will be different because of the reverse rotation of the impeller, but the water will still flow the same direction.