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I disagree -- I own two 4ZE1s with well over 300K aggregate miles, both of which have the stock head. If the cooling system is kept up, these heads last fairly well.


Agreed. If the cooling system is well maintained, you shouldn't have any problems with the head. It's only when the cooling system isn't maintained and the engine is allowed to overheat that you end up having problems.

Richard <img src="/forums/images/graemlins/patriot.gif" alt="" />

Had an 89 Isuzu Pickup
Had a 94 Mitsubishi Eclipse
84 Honda XL185S
Had an 89 Isuzu Trooper w/ 3.4 V6
01 Toyota Tundra SR5 V8 4Door Access Cab
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