it looks like it's an oil burner also .
but I also had the heads milled and the exhaust valve literally positioned above the deck of the head..... don't ask why....
I agree...its like a train wreck...I can't help but watch.View attachment 1715194480
If you have been following some of my threads, you will know that this 318 has the ported 302 heads with a custom roller cam....
Well, I will post pics of my debacle soon....
I have no business working on cars....
Good thought but the witness marks on the pistons from the valves hitting are plain to see in this case.maybe the valves didn't contact the pistons but the trainers bottomed out with too much lift for the head? wiped out a cam and bent the push rods in a Volvo that way.
Agreed 100%.Good thought but the witness marks on the pistons from the valves hitting are plain to see in this case.
Agreed 100%.
There was a mechanical interference which is a nice way to say that the valves certainly hit the pistons and bent the push rods. The marks are there to prove this....
Pushrods where the proper length... 7.500....It was my stupidity of having the exhaust protrude beyond the head deck. Didn't think of that since the piston is .070 in the hole...Live and learn... BTW, the valves where Manley severe duty and surprisingly they survived. The factory pushrods seemed to have taken the brute of the compromise.
But in the aftermath, I learned that 'clay' can be an important component of clearances.... I believe I have some purple PlayDough laying around somewhere.....
Another set of 302 heads are installed that haven't been basterized… Take two...
I agree. I had a piston kiss a couple valves on my old motor...it left light witness marks...the exhaust valve was really bent, but the intake was hard to tell until I did the following.Never thought playdough would be of any use to anything in my adult life,thats until i started playing with cars,its a good way to check valveclearance.
I cant imagine those valves still being straight that would take a miracle,check them real good,...........
.02 Pushrod length is wrong.
let me repeat that is the wrong pushrod length.
If you are using a seven and a half in length pushrod that is way too long.
You need the push rods from a 1990 360. They are less than 7 in Long.
Pushrods where the proper length... 7.500....It was my stupidity of having the exhaust protrude beyond the head deck. Didn't think of that since the piston is .070 in the hole...Live and learn... BTW, the valves where Manley severe duty and surprisingly they survived. The factory pushrods seemed to have taken the brute of the compromise.
But in the aftermath, I learned that 'clay' can be an important component of clearances.... I believe I have some purple PlayDough laying around somewhere.....
Another set of 302 heads are installed that haven't been basterized… Take two...
If it is a factory roller cam motor, 7.50" pushrods are too long. You best check that. you may end up with the same issue.
let me repeat that is the wrong pushrod length. If you are using a seven and a half in length pushrod that is way too long. You need the push rods from a 1990 360. They are less than 7 in Long.
I looked back at the prior thread on this.... original cam was a hydraulic flat tappet. OP changed to a custom roller cam. OP, please take note of the above. (Unless you found some roller lifters that are exactly the same length as flat tappets, or there is something really different here that we aren't aware of.)