01-25-2011, 02:29 PM | #21 |
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Join Date: Nov 2010
Location: Richardson, TX
Posts: 123
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Re: Motor rebuild
Didn't that one have a Cosworth motor?
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Alan 1930 Cabriolet (the newest project) 1929 Special Coupe (pieces n parts) 1928 Sport Coupe (the driver) |
01-25-2011, 04:06 PM | #22 |
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Join Date: May 2010
Location: Anaheim California
Posts: 551
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Re: Motor rebuild
That car is coming close to not being called a Model A
anymore. I run babbit with counterbalanced crank and full pressure. The engine broke at 42,000 miles. The top of a piston broke off. The babbit didn't even need a shim removed. I generally drive 60/62 mph all day long in overdrive at 1900 rpm. Jim Brierely: Was that the 10 FWY or the 15 FWY you were driving at 156 mph? Richard Anaheim CA |
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01-25-2011, 10:54 PM | #23 |
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Join Date: May 2010
Posts: 330
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Re: Motor rebuild
I think that one had an offenhouser engine, etc.. It was a race car disguised as a Model A.. Ran like stink though.. Look up "Worlds Fastest Model A" on youtube
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01-26-2011, 06:37 AM | #24 |
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Join Date: May 2010
Location: Lindenhurst, IL
Posts: 792
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Re: Motor rebuild
Yeah, that's the bad girl, thanks Vince.
Dave, are you sure it didn't have one of them "miracle motors" in there? From what I read on the old barn they were the mostest, bestest, and most reliable mills. Would not that serve 1928Pickuppain well? GW |
01-26-2011, 09:26 AM | #25 |
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Location: new britain,ct 06052
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Re: Motor rebuild
AWESOME! Thank's for sharing Vince. Love your posts and website.
Paul in CT |
01-26-2011, 09:39 AM | #26 |
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Location: Billerica, Ma
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Re: Motor rebuild
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probley sounds crazy lol. |
02-19-2024, 02:53 AM | #27 |
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Join Date: Jun 2013
Location: Botswana
Posts: 14
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Re: Motor rebuild
Jordan is 100% correct.
Last edited by Ian Crawford; 02-19-2024 at 03:00 AM. |
02-19-2024, 02:57 AM | #28 | |
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Join Date: Jun 2013
Location: Botswana
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Re: Motor rebuild
Quote:
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02-19-2024, 09:01 AM | #29 |
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Join Date: Oct 2010
Location: 40 Mt.Vickery Rd. Southborough,MA 508-460-0733
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Re: Motor rebuild
IMG_5687.JPG
IMG_4654.jpgQuote: See I have no doubt that model a motors can be strong but I dont realy beleve that there any one out there that can rebuild them like henry made them. You're right as we build them better now with hardened valve seats and balancing them and using better materials than Henry ever thought of. www.jandm-machine.com |
02-19-2024, 09:23 AM | #30 |
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Location: Cow Hampshire
Posts: 4,188
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Re: Motor rebuild
One of the "defects" I have considered in modern rebuilding is that a "ground crank" may be fine for use with pressurized lubrication (i.e. the crank journals are literally "buoyed" upon a pressure film of oil) and surface roughness becomes inconsequential to the life of the assembly. But modern ground cranks don't work nearly so well on a boundary lubrication situation like Ford's steel on babbitt.
Ford "superfinished" the crankshafts to achieve an original surface roughness almost unachievable at commercial crank grinders today. The "break in" of engines on the test stand (extant picture) was almost more for the "rest" of the motor. Things which Ford couldn't control in manufacturing, things like cylinder walls/ring match. The 26K original mile AA truck chassis comes to mind. Engine was "loose" but very drive-able - not quite into the "whuppa-whuppa" stage. I drove it before the body was removed and I took the rolling powered chassis home. But that engine had probably NEVER been opened for a shim adjustment. One person whose knowledge of these things I respect considered that the 75K was about the life of ANY motor without a filter/air cleaner - so Ford MAY have had that in mind. But the question may be was the crankshaft/lower end sized to the life of the unfiltered cylinders above it, or the other way around? As to life - expect to change out shims perhaps three times in a 75K life of the motor. My truck (avatar) was on its 2nd motor (painted red) and that thoroughly worn out. (probably an Allstate Motor Replacement) The odometer read 43K miles (i.e. 143K miles) I hope my rebuilder Knight Automotive can enter in and comment here. He's retired now but stops in occasionally for exactly that. Six Million Dollar Man comes to mind: We can rebuild him. We have the technology. We can make him better, than he was. Better, stronger, faster. The red paint will help... Joe K
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