Stock Head Info
- Thread starter DStan
- Start date
Am I seeing some knock-in bronze valve guides? How long have those heads been "in use" since all of the work was done? Just curious.
I might be a little financially conservative, but I suspect that rather than cutting the seats for the larger valves, it might have been better to get some stock-size valves, but with undercut stems, port flow-wise? Rather than knock-in guide replacements, doing the bronze heli-coil guide might have also been better (with the wear surface being the bronze heli-coil itself, just pull it out, put new in, seat it in, trim the ends, and it's all new again. Supposed to be "an excellent wear interface" with chrome-stem valves, as I understand it. Then top it off with a set of OEM Chrysler orange silicone valve seals.
CBODY67
I might be a little financially conservative, but I suspect that rather than cutting the seats for the larger valves, it might have been better to get some stock-size valves, but with undercut stems, port flow-wise? Rather than knock-in guide replacements, doing the bronze heli-coil guide might have also been better (with the wear surface being the bronze heli-coil itself, just pull it out, put new in, seat it in, trim the ends, and it's all new again. Supposed to be "an excellent wear interface" with chrome-stem valves, as I understand it. Then top it off with a set of OEM Chrysler orange silicone valve seals.
CBODY67
I was told there was about 10k on it since it was done.
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I was told the engine had about 10k sonce the rebuild in the 90's. He totaled the car and has been robbing bits off the engone for other engines. ( there were 3 rebuilt 400's and a roadrunner being restored in the garage). The heads had been off the engine for about 9 years. There is very little carbon on the pistons (old trw l2315) A lot of the carbon came off the intake valve with just a spray of breakleen and a paper towl. I beleive some of it was just oily dirt from being stored with the intake runners pointing up. Here's a befire and after just from me rubbing it with the breakleen.
70NEWYORKER
Well-Known Member
WOW!! A factory valve stem seal that was not found in the oil pan!!!
I will be replacing those. Lol.
70bigblockdodge
Old Man with a Hat
Throw those valves in the scrap pile, have them done following moper's advice. You could blend away some of those sharp edges in the bowl and gasket match the intake ports. Replace the valves with some one piece quality valves and it will flow just find up to .500.
If your going to run exhaust manifolds don't even bother with the valves or blending.
If your going to run exhaust manifolds don't even bother with the valves or blending.
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