quote:Originally posted by garth66:quote:The other thing that you MUST do in a Pantera is the water pump that you put in MUST have the fast warm up bleed hole in it.
The Wieand pump does not and it must be added.
Without that bypass hole the Pantera WILL overheat and you won't find the cause.
For some reason the bypass hole is not drilled by Wieand. They know that, and they call it a fast warm up modification. It plays havoc with the 351c's cooling system.
Doug - I'd love more info about why the water pump bypass is necessary. I've had a Weiand water pump on my Pantera for about 10 years and never had it over heat. The Weiand pump does allow you to run a 351W thermostat, although I still have the correct 351C thermostat in my car.
Thanks!
Garth
My car with the Wieand as delivered would show on the temp gauge exactly what JT described. This plus a cap that was not sealing played havoc.
It took a while for me to figure out both of the problems.
Neither is initially easy to diagnose.
It's ironic because I had a Wieand in my Mustang for years and it showed no issues.
The Pantera however was immediately erratic as all heck.
I also pressure test all new caps with the kit. I have had several that were defective out of the box brand new.
Wieand doesn't want to hear anything about this, but it is really simple to add the hole. All you need to do is drill a 5/16" hole into the undrilled casting in the pump housing.
As far as the drain cocks in the block, I learned that was a good idea years ago. When you want to pull off a cylinder head, those help tremendously in keeping the anti-freeze from spilling out and into the cylinder bore. It's an old racers trick that helps in a quick engine tear down in the pits.
You just need to remember they are in the car. For another mechanic working on your car would not look for them or expect them to be in there. Sometimes you only see what you expect to see?