Eating distributor gears - Page 5 - Vintage Mustang Forums
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post #61 of 105 (permalink) Old 06-03-2019, 04:11 AM
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Sure, its in the instruction sheet that came with the cam, and its on their web site: http://www.compcams.com/catalog/COMP...12_404-407.pdf

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post #62 of 105 (permalink) Old 06-03-2019, 08:08 AM
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Good luck this time around!!
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post #63 of 105 (permalink) Old 06-06-2019, 12:16 AM Thread Starter
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Drilled the galley plug, brushed the cam gear and started putting it all back together.

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post #64 of 105 (permalink) Old 06-06-2019, 01:26 AM
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Is that Teflon tape I see sticking out of the oil galley plug?
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Scott

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post #65 of 105 (permalink) Old 06-06-2019, 02:01 AM
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Ok, so I've speed read the entire post,.. but I've seen this in the past when the dizzy isn't stabbed all the way home, and not sitting quite flush in the block.., then it gets locked/pulled down with the bolt..(Just to put a different spin on things).. apologies if this has been covered..

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post #66 of 105 (permalink) Old 06-06-2019, 04:07 AM
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Drilled the galley plug, brushed the cam gear and started putting it all back together.

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Deburr and brush the distributor gear too and don't forget to check the free distributor up and down free play while the timing cover is off.
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post #67 of 105 (permalink) Old 06-06-2019, 08:37 AM
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There was a post where someone said that it seemed to them that whenever someone had trouble with a cam it was typically a CompCamís cam. My personal observation is that Comp being a industry leader is one of the most widely used choices, so the odds may lean to Comp just due to that. But that aside, when gears get eaten itís generally a very basic reason, like wrong gear for the given cam or the dizzy gear is installed at the wrong height.

Iím not suggesting either in this case since these two issues donít appear to be the cause, at least not based on whatís been posted. But for others who have trouble or may have trouble in the future, here is a quick video on gear material which could help. If they get this right and get the gear installed at the correct height, at least the most basic reasons for failure are covered.


Good luck with it, I know it sucks to have to backtrack, I sure do a lot of it, but one does get good with knowing all the wrenches that are needed.

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post #68 of 105 (permalink) Old 06-06-2019, 08:38 AM
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Quote:
Originally Posted by 69GT350H View Post
Sure, its in the instruction sheet that came with the cam, and its on their web site: http://www.compcams.com/catalog/COMP...12_404-407.pdf

Step 9, 2nd paragraph. I am running a hydraulic flat tappet cam with retaining plate:


"If you are installing a hydraulic or solid flat tappet cam in your engine, this step is not necessary in the majority of engines. This is because the taper ground into the cam lobes of these types of cams pushes the cam into the proper position and holds it there while the engine is running. Checking end play is also unnecessary in engines equipped with cam retaining plates, whether the cam used is a flat tappet or a roller."

I guess the fact that Ford specifies a particular clearance AND has retaining plates of different thicknesses is some kind of error?

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post #69 of 105 (permalink) Old 06-06-2019, 09:04 AM Thread Starter
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Originally Posted by Redneckgearhead View Post
Is that Teflon tape I see sticking out of the oil galley plug?
Nope

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post #70 of 105 (permalink) Old 06-06-2019, 01:25 PM Thread Starter
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I guess the fact that Ford specifies a particular clearance AND has retaining plates of different thicknesses is some kind of error?
I could be wrong, but the specs are not so much for the cam as for the timing gear used on the end of the cam. The non-Ford timing gear may have difference clearance issues. Spec for the thrust place is .250, for the 1969 351w. My Gear drive was made for this spec. The cam my nature of the design is going to be pushed forward against the thrust plate which mounts flat on the block.

Everything in this world has the chance of some kind of error. This is why I am in this situation in the first place. To the best of my knowledge, from the factory, it never had a problem, and when I rebuilt it, there was no problem. This time, there is a problem and I seriously doubt its the thrust plate thickness.

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post #71 of 105 (permalink) Old 06-06-2019, 02:08 PM
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So you haven't physically and actually checked your cam endplay? Is that right?

Another division of Comp Cams does say to check it and describes how -HERE
http://www.compcams.com/Technical/In.../Files/179.pdf
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post #72 of 105 (permalink) Old 06-06-2019, 03:48 PM Thread Starter
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So you haven't physically and actually checked your cam endplay? Is that right?

Another division of Comp Cams does say to check it and describes how -HERE
http://www.compcams.com/Technical/In.../Files/179.pdf
You got it. Once again, I'm going with the instructions that came packed with the cam, not some that might be for a different cam. The instructions indicated here seem to be a bit of a universal type.

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post #73 of 105 (permalink) Old 06-06-2019, 06:44 PM
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You got it. Once again, I'm going with the instructions that came packed with the cam, not some that might be for a different cam. The instructions indicated here seem to be a bit of a universal type.
With all the issues that you have had and all the info you have gathered, I would think that you would at least consider doing a measurement. Its very easy to do and would only take a couple of minutes to accomplish. Even if you don't plan on changing anything as least you would know what you have before you fire it up again.

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post #74 of 105 (permalink) Old 06-06-2019, 07:16 PM Thread Starter
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With all the issues that you have had and all the info you have gathered, I would think that you would at least consider doing a measurement. Its very easy to do and would only take a couple of minutes to accomplish. Even if you don't plan on changing anything as least you would know what you have before you fire it up again.
Sorry, not going to tear it down again just to take a measurement that really is not needed. At the very least, as its a gear drive, I know it's not binding as it turned easily before I put the idler gears back in.

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post #75 of 105 (permalink) Old 06-06-2019, 07:26 PM Thread Starter
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Sorry, not going to tear it down again just to take a measurement that really is not needed. At the very least, as its a gear drive, I know it's not binding as it turned easily before I put the idler gears back in.
You know what, just because you guys are giving me such a hard time about this, I'm going to take the timing cover back off and do your measurement. Fricking waist of time I say. Just like degreeing the cam. So surprised you did not tell me I had to do that as well.

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