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  #16 (permalink)  
Old 04-30-2014, 12:15 PM
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Originally Posted by engineczar View Post
Or didn't replace it at all and it's still bent which is why it's missing so bad.
. Yes, good catch, a bent valve head would also make the valve stem look shorter from the top side...!!!

. I'd suggest getting a valve spring compressor... not very expensive... and simply remove the valve and inspect for damage, if any... rather than just throwing money at still more heads... aluminum heads are easy to repair, if needed... good S.S. valves can be readily availably found cheap... either individually... or in full sets of 16...:

http://www.competitionproducts.com/S.../#.U2EwtTbD-cy

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  #17 (permalink)  
Old 05-01-2014, 08:56 AM
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Some of the factory 302HO pistons have small valve reliefs and oversize valves can cause problems. Checking the piston to valve clearance in both the longitudinal and radial direction just to be safe.
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Old 05-01-2014, 09:50 AM
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Originally Posted by lmsport View Post
Some of the factory 302HO pistons have small valve reliefs and oversize valves can cause problems. Checking the piston to valve clearance in both the longitudinal and radial direction just to be safe.
^This was it and all my fault...I had 1.94 valve heads and these are 2.02/1.60 and I am running forged flat tops with tiny valve reliefs. In my ignorance I did not check piston to valve clearance and bent the valves. They are in the machine shop now and I have learned an expensive lesson.
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Old 05-01-2014, 10:03 AM
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If that's the case what's your fix for the small valve pockets?
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Old 05-01-2014, 10:13 AM
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If that's the case what's your fix for the small valve pockets?
I am looking into getting them fly cut. Not positive yet, but that is what I think the route to take is. A few a have small marks where the valve hit. Looks like it could be fly cut and then check the clearance as I should have.
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Old 05-01-2014, 10:20 AM
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It's really your only option if you're going to use those valves with that cam.
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Old 05-01-2014, 06:11 PM
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. Actually, there is a tool available... looks a little like an oversized valve with cutters... put it in the empty head valve guide... put the head on... turn the tool with a drill motor and it cuts the eyebrow exactly where needed in each piston top... if the amount of aluminum removed is too slight to necessitate re-balancing...
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Old 05-01-2014, 11:08 PM
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Originally Posted by BuzzLOL View Post
. Actually, there is a tool available... looks a little like an oversized valve with cutters... put it in the empty head valve guide... put the head on... turn the tool with a drill motor and it cuts the eyebrow exactly where needed in each piston top... if the amount of aluminum removed is too slight to necessitate re-balancing...
Thanks! I found it. Looks easy enough to use with the guide to keep me from going too deep.

lindytoolsco
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Old 05-02-2014, 11:15 AM
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. I think Comp Cams will also rent you that tool for about $40... or make one from an oversized valve (2.050", 2.080")... since just cutting into aluminum...
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Old 05-02-2014, 06:35 PM
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Thanks! I found it. Looks easy enough to use with the guide to keep me from going too deep.

lindytoolsco
Isky Cams has the same tool, on a rental basis. You pay a deposit and rental fee, get the deposit back when they get the tool back.
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Old 05-02-2014, 07:20 PM
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Thanks guys! I got the heads back from the machine shop. The only damage was some bent valves. I will look into renting the tool if I can, considering I will probably never do this again lol. Thanks again for all the help! I really do appreciate it.
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