Hydro-idi
Full Access Member
Gary, I plan on doing that tomorrow.
Fresh Reman Engine Ticking
- Thread starter Hydro-idi
- Start date
Hydro-idi
Full Access Member
Below are the pics. Let me know if they work.
Drivers side front 1
DS 2
DS 3
DS 4 rear
Passenger side front 1
PS 2
PS 3
PS 4
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Drivers side front 1
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DS 2
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DS 3
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DS 4 rear
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Passenger side front 1
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PS 2
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PS 3
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PS 4
crash-harris
Breaker! Breaker!
Driver side cylinders looking cleaner than the passenger side.
Hydro-idi
Full Access Member
Most definately, yes. This is interesting to me. But......last year when I took off cylinder heads, the drivers side was cracked. So I got a donor engine from Brian and used one of the heads off his engine, got it rebuilt, & put it on mine. When I pulled them a few weeks ago from original block, the pistons didnt show any piston-valve contact marks. So this tells me a few things. First, the block being decked certainly didn't help matters. Second, the specs must have been different between the two heads OR the machine shop did something different with the drivers side when rebuilding. Regardless, I hope to clarify alot of this tomorrow. Still need to figure out how to measure piston protrusion & what tools are required for that job.
Hydro-idi
Full Access Member
Woops.....I wiped the drivers side clean before taking pics. That's why it is like that.
crash-harris
Breaker! Breaker!
That one head could have been milled flat once before, so having it done again, even if it's within spec, might have gotten cut down just enough. That coupled with the .030 aftermarket pistons that may be .00x taller than factory could contribute to your valves smacking the pistons. ALWAYS measure. One of the reasons why I prefer inline sixers. Milling on block/head doesn't have to be done at an angle in relation to the next angle. All flat 
crash-harris
Breaker! Breaker!
Sorry to hear that.
As I recall the same shop that did the short block also checked your heads???
Before the new block was put into service.
If this is the case.....
As I recall the same shop that did the short block also checked your heads???
Before the new block was put into service.
If this is the case.....
Hydro-idi
Full Access Member
That one head could have been milled flat once before, so having it done again, even if it's within spec, might have gotten cut down just enough. That coupled with the .030 aftermarket pistons that may be .00x taller than factory could contribute to your valves smacking the pistons. ALWAYS measure. One of the reasons why I prefer inline sixers. Milling on block/head doesn't have to be done at an angle in relation to the next angle. All flat
Good point. I will be taking my other spare head in tomorrow just in case we decide to use that one or rob valves from it if others are damaged.
when you have time, also measure how far the piston sticks out of the deck.
Hydro-idi
Full Access Member
No. Short block came from back east. Heads were done in Sacramento.
I measured protrusion using some feeler gauges and a straightedge on top of the piston at TDC. Could the cam gear be off a tooth?
79jasper
Chickenhawk
Personally, I was wandering about cam timing.
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icanfixall
Official GMM hand model
Measure both the valve depth in the heads and the piston protrusion from the deck. If the shop has no idea how or where to measure the head thickness please find another shop. I say this kindly. I do not know the shop or what they can do. They may or may not know about valve recession into the heads. I can loan you the tool to easily check the piston to deck height. Just pm me.
Hydro-idi
Full Access Member
Nope. Cam gear was perfectly lined up
