Thanks guys for the advice. I was kinda depressed yesterday thank you for the encouragement. This forum is great!
I did some googling on Pro comp heads. I gather they are Chinese junk. You get what pay for. I'm not the only one with rubbing pushrods. I really couldn't gather how to fix it.
so far.
1. Pushrods to long
2 clearence the guides (file a bit bigger)
3 harden push rods.
4. clearend the pushrod guide hole.
anything else let me know
I did turn the motor over on the stand when building it. I was manly looking at the wear on the stem tip that it was centered. I set the rocker tension with the manifold off. I locked the rocker as the pushrod just started to push the hydraulic lifter spring down being careful not to bottom it out.
I am was thinking the pushrods are to long except. I found the rocker is striking the stud after the cam comes off the lobe. There are wear marks on the back of the studs. If I used shorter pushrods would this make it worse?
Here is a picture of the broken stud. I would say the nut uses half the stud threads. The broken part was about 3 thread up in the nut. I was able to use a screw driver to work it out. Being that far out I could see it woobling a bit.
heads look good. Is this much carbon o.k for 200 miles
I am kind of concered about the engine temp. It's been cool here and most times the engine runs between 150 and 170f. I drilled so air relief holes in the thermostat. Maybe too big?
Threaded Mode
