The Ford Barn

r_reed · 11-09-2019, 08:02 PM

my EAB is about 6 years, 12,000 miles into a rebuild. it runs great, has lots of power (merc crank, schneider cam, .060 bore, ports smoothed up, bubba distributer, mech advance only, large diameter 3 bolt carb). just recently when hauling up hills, when the revs are up i get a squeaking noise. i wonder what it is, how bad? i can avoid it by just not pushing it so much, which of course, is what i do now, (don't push it). any ideas?

petehoovie · 11-09-2019, 08:04 PM

Loose/slipping fan belts?

r_reed · 11-09-2019, 08:47 PM

actually, i was hoping it would something simple like the belts. since i just put it away for the winter, that will be first on the list next spring. actually my belts are 13 years old with about 25K miles, maybe i'll just get two new ones while i'm at it. even if the noise is from something else, belt replacement makes sense.

JWL · 11-10-2019, 12:13 AM

Most likely it is spark knock. The huge chambers in our Flathead engines tend to "squeak" rather than ping or rattle. The possible causes can be several including, but not limited to, carbon build-up in the chambers or low grade fuel or over advanced ignition or hotter than normal operating temperature.

3twinridges · 11-10-2019, 08:13 AM

Could be your generator bearing or your brushes if you have recently rebuilt it.

JB

r_reed · 11-10-2019, 03:05 PM

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thanks, guys, for the suggestions. i will look in to all of them. since this just started after 6 years of perfect running, i'm thinking belt or carbon build up. it is not running hot, in fact, i would like it to run a little hotter. but we'll check it all. thanks.

RalphG · 11-10-2019, 07:20 PM

I remember years ago when we had an old tractor that would squeek under load. It was the head gasket leak causing the noise. I don't recall if it had any other signs of leakage except the squeek.

11-09-2019, 08:02 PM	#1
r_reed Senior Member Join Date: May 2010 Location: east glenville NY Posts: 158	EAB flathead, noise pushing it under load my EAB is about 6 years, 12,000 miles into a rebuild. it runs great, has lots of power (merc crank, schneider cam, .060 bore, ports smoothed up, bubba distributer, mech advance only, large diameter 3 bolt carb). just recently when hauling up hills, when the revs are up i get a squeaking noise. i wonder what it is, how bad? i can avoid it by just not pushing it so much, which of course, is what i do now, (don't push it). any ideas? __________________ 1949 F-1 Flatrod II (flat paint, flat motor) Keeping one more flathead alive It smoked, but gave it up 7/26/2013 East Glenville NY

11-09-2019, 08:04 PM	#2
petehoovie Senior Member Join Date: May 2015 Posts: 8,063	Re: EAB flathead, noise pushing it under load Loose/slipping fan belts? __________________ The only thing nice about being imperfect is the joy it brings to others.... *"Silver rings, your butt! Them's washers!"* "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 Last edited by petehoovie; 11-10-2019 at 02:50 AM.

11-09-2019, 08:47 PM	#3
r_reed Senior Member Join Date: May 2010 Location: east glenville NY Posts: 158	Re: EAB flathead, noise pushing it under load actually, i was hoping it would something simple like the belts. since i just put it away for the winter, that will be first on the list next spring. actually my belts are 13 years old with about 25K miles, maybe i'll just get two new ones while i'm at it. even if the noise is from something else, belt replacement makes sense. __________________ 1949 F-1 Flatrod II (flat paint, flat motor) Keeping one more flathead alive It smoked, but gave it up 7/26/2013 East Glenville NY

11-10-2019, 12:13 AM	#4
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: EAB flathead, noise pushing it under load Most likely it is spark knock. The huge chambers in our Flathead engines tend to "squeak" rather than ping or rattle. The possible causes can be several including, but not limited to, carbon build-up in the chambers or low grade fuel or over advanced ignition or hotter than normal operating temperature.

11-10-2019, 08:13 AM	#5
3twinridges Senior Member Join Date: Dec 2015 Posts: 546	Re: EAB flathead, noise pushing it under load Could be your generator bearing or your brushes if you have recently rebuilt it. JB

11-10-2019, 03:05 PM	#6
r_reed Senior Member Join Date: May 2010 Location: east glenville NY Posts: 158	Re: EAB flathead, noise pushing it under load Sponsored Links (Register now to hide all advertisements) thanks, guys, for the suggestions. i will look in to all of them. since this just started after 6 years of perfect running, i'm thinking belt or carbon build up. it is not running hot, in fact, i would like it to run a little hotter. but we'll check it all. thanks. __________________ 1949 F-1 Flatrod II (flat paint, flat motor) Keeping one more flathead alive It smoked, but gave it up 7/26/2013 East Glenville NY

11-10-2019, 07:20 PM	#7
RalphG Senior Member Join Date: Sep 2014 Location: Sask. Canada Posts: 2,424	Re: EAB flathead, noise pushing it under load I remember years ago when we had an old tractor that would squeek under load. It was the head gasket leak causing the noise. I don't recall if it had any other signs of leakage except the squeek. __________________ https://www.youtube.com/user/roosty6/videos

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