JC13

I am looking for reviews on the 0331 casting head from Clearwater. I drive a 2000 Cherokee with 49 state emissions...
I see on old posts people are running them.
Any input from you guys before I spend the money?

thatXJguy

I'm pretty sure Clearwater or TUPY are sufficient replacements for the fail prone 0331 heads that come from the factory those years. I'm not sure if they're the same thing or not, but probably not.

Can't go wrong with TUPY either way.

fijicorey25

I'm running one right now that I recently installed. Everything is going smoothly so far. Delivery was fast (probably because I live in Florida).

The only thing bad I have to say is that the head arrived with tons of casting sand on it, including inside the ports. I had mine professionally cleaned by a machine shop before installation. This is a minor gripe with an otherwise excellent purchase.

mikesignal

I just replaced my 0331 head with a clearwater. I only have a few hundred miles on it , but it seems good. No more mystery coolant loss .

extrashaky

Clearwater heads are not Tupy heads. The Tupy 0331s were OEM heads cast at the Tupy foundry in Brazil. Chrysler started using them in 2002 when they realized they had a problem with the original casting 0331 heads. I don't think you can get them new any more unless you somehow stumble on some new old stock. You basically have to find one in a junk yard and have it checked in a machine shop at a minimum.

The Clearwater 0331s are cast in China and solve the cracking problem by making the head thicker. They are brand new heads.

It's possible to save some money on a Tupy head if you can find one (that ain't always easy), but it may turn into a loss compared to the Clearwater if it turns out it needs work before you can use it.