The Ford Barn

marko39 · 04-21-2018, 02:30 PM

i just got a used cam for my 8ba engine. it was advertised as a merc. 8cm. the markings are fomoco and c45 on one end and EA: on the other, the colon after EA is a larger indention. is this a merc cam? i thought it should be marked 8cm.

Ol' Ron · 04-21-2018, 08:20 PM

Check the lift, it easy just use a caliper. Zero out the base circle and then the lobe will tell you the lift. .339 is either an EAB or EAC. both are good cams. only the duration wold tell.

marko39 · 04-22-2018, 09:53 AM

thanks Ron, took some measurments and got between .327 and .337.avg. is .333. how much wear between lobes is acceptable? Mark

51 MERC-CT · 04-23-2018, 04:38 AM

If this is a Mercury or Ford cam, pay attention to the fuel pump cam lobe as there may be wear issues.

Ol' Ron · 04-23-2018, 08:41 AM

I'm not sure that's wear, it maybe just manufacturing tolerance. Sounds like a good cam, I'd use it they work very well, and have a nice sound.

marko39 · 04-24-2018, 07:44 AM

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Quote:

Originally Posted by 51 MERC-CT

If this is a Mercury or Ford cam, pay attention to the fuel pump cam lobe as there may be wear issues.

how is this checked? what should the lift be?

flatjack9 · 04-24-2018, 08:09 AM

Lift is around .20.

marko39 · 04-26-2018, 07:28 AM

checked the lift and got .19. should be ok.

51 MERC-CT · 04-26-2018, 08:31 AM

Quote:

Originally Posted by marko39

checked the lift and got .19. should be ok.

Also should be free of any pitting or galling.

04-21-2018, 02:30 PM	#1
marko39 Senior Member Join Date: Oct 2016 Location: harpursville ny Posts: 1,040	camshaft markings i just got a used cam for my 8ba engine. it was advertised as a merc. 8cm. the markings are fomoco and c45 on one end and EA: on the other, the colon after EA is a larger indention. is this a merc cam? i thought it should be marked 8cm.

04-21-2018, 08:20 PM	#2
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,857	Re: camshaft markings Check the lift, it easy just use a caliper. Zero out the base circle and then the lobe will tell you the lift. .339 is either an EAB or EAC. both are good cams. only the duration wold tell.

04-22-2018, 09:53 AM	#3
marko39 Senior Member Join Date: Oct 2016 Location: harpursville ny Posts: 1,040	Re: camshaft markings thanks Ron, took some measurments and got between .327 and .337.avg. is .333. how much wear between lobes is acceptable? Mark

04-23-2018, 04:38 AM	#4
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: camshaft markings If this is a Mercury or Ford cam, pay attention to the fuel pump cam lobe as there may be wear issues. __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES

04-23-2018, 08:41 AM	#5
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,857	Re: camshaft markings I'm not sure that's wear, it maybe just manufacturing tolerance. Sounds like a good cam, I'd use it they work very well, and have a nice sound.

04-24-2018, 08:09 AM	#7
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,526	Re: camshaft markings Lift is around .20.

04-26-2018, 07:28 AM	#8
marko39 Senior Member Join Date: Oct 2016 Location: harpursville ny Posts: 1,040	Re: camshaft markings checked the lift and got .19. should be ok.