i know the early ones are bad, i'm just trying to figure out if there are any warning signs to look for.

does the o-ring rip, or does the pump lock up, or something else?

does it just quit all of a sudden, ~40psi > 0 without any warning, or does it gradually lose pressure over time?

i've done a million searches, but all i can find is that they're bad, never says specifically why they went bad.

 

I believe it was casting flash that would cause the pressure relief valve to stick. Don't know if the cause was ever proven, but the problem was in the relief valve.

 

they will suddenly fail. Gomer and I installed the heads on the car, which already had a cam in it. As he was tuning the car, things were fine. He pulled the car to his shop, shut it down and went to work on something else. When he came out to move it, he fired it up and had nothing. Good thing he was paying attention...i might not have.

 

hmmmm. that sucks, but at least it looks like an easy/cheap fix. i'm hoping to get one in the next month or so.

thanks guys.

 

It's not that easy

 

But it's not that hard.

 

lol, you could say that.

 

more time consuming than anything. im about to change out the timing chain along with my h/c swap...