FrontEngineDragsters.Org Forum
Technical => Spud Miller's Cave => Topic started by: FEDNV on April 06, 2016, 08:19:00 AM
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I installed a new billet cam and had to change the distributor gear to a brass style (this was a used gear I had on another distributor) and took the car out this weekend and it ran absolutely awesome but we found some brass shavings in the top end. I called the cam company and they said to shim the distributor with gaskets to get the correct engagement and I was using the correct distributor gear (brass). I was thinking of going to another style gear like the everwear gear from Lunati or a melanized steel gear. Any thoughts on this?
(http://i393.photobucket.com/albums/pp15/burnout1969420/20160404_172630_zpsitszbxcm.jpg)
(http://i393.photobucket.com/albums/pp15/burnout1969420/20160404_172509_zpssy0rtb48.jpg)
(http://i393.photobucket.com/albums/pp15/burnout1969420/20160404_161646_zpsyqqzpbrz.jpg)
(http://i393.photobucket.com/albums/pp15/burnout1969420/20160404_161616_zpsahv9qylr.jpg)
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not all bronze gears are the same
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Not to sound smart-alecky but was dist. seating depth correct?
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Not to sound smart-alecky but was dist. seating depth correct?
What is the correct seating depth dimention you speak of????
There is a ton of wiggle room for depth as long as you dont bottom on the oil pump shaft
Could be improper cam placement with the gear being not in line with the distrib gear either too far forward/back and the bronze is seeing a side load.
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Nothing has changed in scotts motor except cam and dist. gear. Never a problem before if that helps at all. I don't think it is a depth problem. Just my thought I would throw that out there. Crappy gear?
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Take a look at the cam gear and make sure there are no sharp edges . It looks like something was cutting into the gear also make sure the distributor is not bottoming out on the oil pump shaft . When you run a steel billet cam you have t use a bronze gear .
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I have checked the cam gear even before I installed it and it had no sharp edges either before or after taking it out. It is the same magneto, we just changed cams and distributor gear. Could it being a used gear have an alignment issue as it may have been warn by the previous cam?
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You might check this out:
http://www.cranecams.com/bulletins_listview.php?s_id=27
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I am far from an expert but it looks to me like all the wear is below center on the distributor gear. Like the distributor is to high. If you only ran one gasket make sure the distributor isn't bottoming out on your oilpump shaft.
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I think Spud had a post on hear or his website re; distributor gear wear and which gear to use and not use. If your driving the oil pump with the distributer pressure will have an affect on how the gear wears.
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Thanks for that link to the crane bulletin and the other comments. I contacted Clay Smith cams and they told me to use a high silicone gear so I guess I will try a new gear as well as making sure it is seating properly and see if I still have this issue.