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> Valve collision problem
thomasotten
post Jul 1 2018, 05:11 PM
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Brass shaving found mid stem


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thomasotten
post Jul 1 2018, 05:18 PM
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It is hard to make a good photo of this, but looking
down the guide, there are areas that look non uniform. Like
the way wood looks when you have lightly run a chisel over it.
Again, cause or effect? I’m leaning towards imperfect guide reeming.


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Elliot Cannon
post Jul 1 2018, 05:21 PM
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Next time, send them here. (IMG:style_emoticons/default/biggrin.gif) http://www.europeanmotorworks.com/
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bulitt
post Jul 1 2018, 06:14 PM
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They used the wrong size reamer ?
Roll that valve stem on a piece of glass and see if it is bent.
How much did they cut/deck the heads?
Are you using stock length pushrods?
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Mark Henry
post Jul 1 2018, 07:41 PM
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Hard to see, but definitely tight and a poor job.
When you drive guides in they collapse slightly, so they have to be reamed and honed back to spec.
This is just common procedure, part of the job.
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reharvey
post Jul 2 2018, 06:13 AM
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I had this exact same problem once and it was the new valve guides that were not reamed to the correct size. That's why you see the small pieces of brass and gulling marks on the valve stem. Pull the heads and remove all the valves then have someone ream all the new guides to the right size. Ray
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thomasotten
post Jul 17 2018, 10:42 AM
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I won't be posting more about this until I have my head back. But sufficed to say, I'm very frustrated with RIMCO. I have been asking them for a week to work with me to get this resolved, as all the evidence points to a quality control issue starting with an improper inspection and work done on the valve guides. I have been asking the owner to call me since the middle of last week.
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