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Oversized cam journal? |
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akimmet 
AMC Nut 
Joined: Aug/02/2012 Location: Republic OH Status: Offline Points: 428 |
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 Posted: May/03/2017 at 9:31am |
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I would be more surprised to hear of correctly sized journals on an AMC V8 cam from Comp. Both cams I got from them were oversized. I have since spoken to several other people that have had the same exact problem with AMC V8 grinds from Comp.
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74Bubblefender
AMC Addicted
Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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Posted: May/03/2017 at 10:03am |
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Correct finished bearing ID #s 1. 2.122 2. 2.092 3. 2.062 4. 2.032 5. 2.002 Do you see the pattern? That is finished ID bearing size for an AMC V8 (+/-.0005). It is literally .030" of step between bearing sizes and lobes on the camshaft. How hard is that to follow?... .030" for every bearing journal. Seems like a no brainer. Maybe a no brainer was running the grinding machine that day.
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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Javelin69
AMC Apprentice 
Joined: Dec/11/2013 Location: Madison wi Status: Offline Points: 187 |
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Posted: May/28/2017 at 9:38am |
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Same problem here. Oversized comp cams journals. Builder didn't realize upon assembly and spun a cam bearing. Cam had to be polished to fit correctly.
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jpnjim
AMC Addicted
Joined: Nov/25/2007 Location: New England Status: Offline Points: 2752 |
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Posted: May/28/2017 at 12:41pm |
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Like I was just reading in another thread:
McDonald's Walmart Acer Computers Sometimes (most times?) greatest sales numbers doesn't = greatest quality I personally scratched Comp Cams off my list for off the shelf hydrolic cams because of the complaints, and what seems like a complete lack of effort to correct them. |
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71 P-code 4spd Javelin/AMX
some Jeeps and some Fords |
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one bad rambler
AMC Addicted
Joined: Jan/09/2008 Location: On The Island Status: Offline Points: 2007 |
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Posted: May/28/2017 at 3:30pm |
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 68 AMX 390 4 Speed,68 American,64 American 2 Door Wagon Altered Wheelbase,78 Concord Build 360,727,8.8
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jpnjim wrote: