Need help with mixing Cobra and u/d pullies on an LX

[Constable]

Ok, I bought my notch with a set of unknown underdrives on it. It doesn't cool for sh!t and the charging sucks too. I located a NOS 93 Cobra water pump pulley for sale locally for pocket change. I snatched it up in hopes that this will overdrive my water pump a bit and maybe alleviate some of the cooling issue. Ideas?

 

[9T3SVT]

Slap it on and test your theory, or get a bigger radiator :beer:

 

[93Cobra#2771]

That may help your cooling issue, but it won't help your charging issue. My suggestion: Get a set of stock pullies on it, or find a 93 Cobra Crank pulley to run with the 93 cobra wp pulley....


Does it overheat in traffic only, or at all times?

 

[Constable]

It overheats whenever it wants to... there's no pattern. I know all about the fox cooling issues and am upgrading (and fixing) plenty of things as I type. I know it won't help my charging issue, I just wanted to know if it'd spin my pump a bit faster.

 

[93Cobra#2771]

Yes, it will spin both the waterpump and the fan faster...

 

[Constable]

Ok, I got the pulley here and the part number isn't making me happy. It reads: F3ZE-8509-AA. Can someone look this up and tell me what it's for. I tried punching it into several sites, but have had no luck finding what the part number equates to.

 

[93Cobra#2771]

Not sure on the part number, but the pulley should be smaller than your stock pulley. I've got a pic of the two side by side, and can see part of the part number - it does appear to match...

 

[Constable]

From everything I've found, the Cobra pulley should read F3ZZ-8509-A. Similar part number, but not exact. If you can see anymore from the pic (or if you can see it on your car), lemme know.

 

[lone sailor]

The underdrive pullies for the alternators are notorious for not maintaining the charge on the stock alternators. The only way I know to fix this is to either, return to the stock pulley, or buy a larger amp alternator to alleviate the problem. As far as the water pump is concerned, are you sure it's not just a bad thermostat??