DIST/CAM GEAR MATCHET SET?

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   I READ THIS ALL THE TIME BUT DONT KNOW WHAT MATCHED SET MEANS.  I LOOK AT ALL THE LISTINGS OF DIST AND CAM GEARS FOR SELL AND NONE OF THEM SAY MATCHED SET.
CAN SOMEONE EXPLAIN MORE PLZ?
THANX

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DHACKING Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Oct/06/2014 Location: DALLAS FT WORTH Status: Offline Points: 184	Post Options Post Reply Quote DHACKING Report Post Thanks(0) Quote Reply Topic: DIST/CAM GEAR MATCHET SET? Posted: May/05/2018 at 10:01pm
	I READ THIS ALL THE TIME BUT DONT KNOW WHAT MATCHED SET MEANS. I LOOK AT ALL THE LISTINGS OF DIST AND CAM GEARS FOR SELL AND NONE OF THEM SAY MATCHED SET. CAN SOMEONE EXPLAIN MORE PLZ? THANX
	RAYMON H

mixed up Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Jun/16/2015 Location: Monroe mich Status: Offline Points: 2178	Post Options Post Reply Quote mixed up Report Post Thanks(0) Quote Reply Posted: May/05/2018 at 11:14pm
	there were issues with hardness of gears from after market distributor so its best to throw caution and buy like both msd gears or get two factory gears to eliminate the possible problem of wearing out the cam gear if you do get a hardness issue it is also best to pay close attention when assembling a motor for the oil groves in a cam gear so you don't get oiling issues bulltear also might have the gears in stock or you could post for new ones on the forum if yours are worn
	69 amx 290 auto 65 220 290 4spd 80 ford fairmont

DHACKING Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Oct/06/2014 Location: DALLAS FT WORTH Status: Offline Points: 184	Post Options Post Reply Quote DHACKING Report Post Thanks(0) Quote Reply Posted: May/05/2018 at 11:24pm
	SO IF I SIMPLY ORDER A DIST GEAR AND A GEAR THAT DRIVES THE DIST IN A PAIR FROM SAY SUMMIT.......THEY ARE NOT MATCHED?
	RAYMON H

mixed up Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Jun/16/2015 Location: Monroe mich Status: Offline Points: 2178	Post Options Post Reply Quote mixed up Report Post Thanks(0) Quote Reply Posted: May/05/2018 at 11:41pm
	that's correct in some cases people like factory sets that have been used together in a motor so the wear pattern is already set like I said it was a harness issue from like china made distributor what some people do is use a bronze distributor gear it will wear before taking out the cam gear im sure others will chime in on the issue there have been many old post on here on this issue if you look
	69 amx 290 auto 65 220 290 4spd 80 ford fairmont

ccowx Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Nov/03/2010 Location: Yukon Status: Offline Points: 3510	Post Options Post Reply Quote ccowx Report Post Thanks(0) Quote Reply Posted: May/05/2018 at 11:42pm
	Besides the obvious of having the gears matched to each other, ie meant to work together and having similar hardness, etc, the term is often used to mean that they have been run together and should be kept for life with those two specific gears together. Some swear by this and others say don't worry about it. Personally, I have done both and have not had any particular trouble either way. If the gears are both good quality and the oiling passages mentioned above are clear, you should not have any trouble, whatever you do. Chris PS: In fairness, it is ideal to use the same set mated for life, but in my opinion it is not critical. I asked an engineer friend of mine and basically what happens is that they will wear to the level of the worst gear of the set. If both are in good shape, you should be fine. If one is marginal, it will lower the other to it's level. Basically, don't put a well worn gear with a new one! Edited by ccowx - May/05/2018 at 11:47pm

amxess Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Aug/30/2007 Location: Florida Status: Offline Points: 768	Post Options Post Reply Quote amxess Report Post Thanks(0) Quote Reply Posted: May/06/2018 at 9:07am
	The issue came about a number of years ago when factory distributor gears were no longer available. A aftermarket gear was then being sold by AMC vendors and even Mopar dealerrships. It was a different hardness from the original, and maybe even just poor quality. Once installed, it would wipe out the cam gear anywhere from a day or two to a few weeks or more. I know, as I had to replace two gear sets because of this (one bought at a Mopar dealetship). After this debacle became known, original factory matched sets were in big demand until Bulltear started making sets which they no longer offer. I guess MSD offers sets now. See Jeep sites sell gears. I've only used the Bulltear since, so no idea who to recommend now.

73hornut Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Jul/03/2007 Location: Southern Oregon Status: Offline Points: 3130	Post Options Post Reply Quote 73hornut Report Post Thanks(0) Quote Reply Posted: May/06/2018 at 9:57am
	I have ran many different distributors, many new and remans, and none of them had matching gears. I have never had a single issue. What I have learned from building amc engines, is that the problem, IMHO, isn't the gears, but rather oiling to the gears. MANY after market timing sets are not machined right, and often block part or all of the oil passage to the gears.
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BassBoat Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Aug/29/2008 Status: Offline Points: 1719	Post Options Post Reply Quote BassBoat Report Post Thanks(0) Quote Reply Posted: May/06/2018 at 6:20pm
	As I understand the issue, there are/were aftermarket gears that had either a different profile on the teeth or a different hardness than stock gears or both. They failed rapidly. The only safe interchange that I personally know is accel distributor gears have always worked on stock cam gears for me. But that only applies to accel distributors, as the shaft is a larger diameter. 73Hornut above is 100% correct, even with properly matched gears, there are opportunities to screw up the oiling as well. The cam has to feed the passage in the timing chain gear all the way to the cam gear. Some are mis-aligned, some have a leakage path that loses oil on the way to the gear.

amxess Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Aug/30/2007 Location: Florida Status: Offline Points: 768	Post Options Post Reply Quote amxess Report Post Thanks(0) Quote Reply Posted: May/07/2018 at 2:14pm
	Yes, oiling issue could also cause problems but a bad distributor gear was cause of mine. Don't know if still available, but the Rollmaster Timing sets from Australia prevented any any oiling problems for me. So I take it, to be safe, the only cam/distributor gear sets out there now that offer no problems is the MSD? Just used my last Bulltear set.

DHACKING Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Oct/06/2014 Location: DALLAS FT WORTH Status: Offline Points: 184	Post Options Post Reply Quote DHACKING Report Post Thanks(0) Quote Reply Posted: May/12/2018 at 11:36am
	I bought a distributor and cam gear from summit made by crown automotive. part # cwa-4486635k IS THIS CONSIDERED A MATCHED SET?????????????? THANX RAY
	RAYMON H