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#1 |
Senior Member
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I bought this engine yesterday its a june 1928 engine. I dont remember seeing this bolt where the cam spring is. I have 4 other A engines that dont have this. Its a AA3521481* dont know so ill ask the experts thanks ,Dave
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#2 |
Senior Member
Join Date: May 2010
Posts: 262
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i had one like that . It was used to tighten the tension on the cam spring!
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#3 |
Senior Member
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Was this a Ford thing or a backyard fix?
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#4 |
Senior Member
Join Date: May 2010
Location: Didsbury Alberta
Posts: 838
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Probably a farmer fix for an industrial engine, such as used on the old combines.
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#5 |
Senior Member
Join Date: May 2010
Location: Aptos, CA
Posts: 328
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Aftermarket, but a keeper. You'll gain some steadiness at low idle if you employ that. It can be used to keep enough tension on the timing gear to stop the helical walk between the cam and crank pulley.
Tim |
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#6 |
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Join Date: Aug 2010
Posts: 252
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nick |
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#7 |
Senior Member
Join Date: May 2010
Location: santa cruz, calif
Posts: 2,009
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several engine builders use that trick now, with a torrington bearing on the camshaft face. Jay Steele used to use it, it was one of the tell tale signs of his engine.
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#8 |
Senior Member
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Thank`s fellows the wisdom on here is something to behold. It goes to show nothing replaces experiance ,age and a good memory. I just wish i could retain some of it ! Thanks again....Dave
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#9 |
Senior Member
Join Date: May 2010
Location: Fresno, Ca.
Posts: 3,615
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Tim,
The direction of the helix cut(left or right) denotes which way it " loads " the cam shaft. The Model A will load it back, the 32-48 Ford V/8 is also the same, the 49-53 has an opposite helix and loads to the front, BUT has a thrust button to stop the cam from screwing it self out the front cover. Even when doing a 49-53 I use a earlier gear set, works better. Jay Steele, of Taylor Engines, is a sharp engine builder. Dudley |
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#10 |
Senior Member
Join Date: Sep 2010
Location: Independence, VA
Posts: 423
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Not an "A" guy but since the bolt is in a cast boss it would be original. Hercules and others used similar to set end play in cam and accesssory drives.
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#11 |
Senior Member
Join Date: May 2010
Location: Windy City
Posts: 2,890
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Au contraire! That cover with the rib under the boss looks EXACTLY like part #A-6019-A, used 1928 and on AA's that had engines bolted directly to the front frame cross-member. All front covers had a blind boss for the thrust plunger and spring. This one has simply been drilled/tapped at a later time for a bolt to limit plunger travel. The boss was there before the bolt was added. Anybody have a pix of A-6019-A ?
__________________
Mechanical engineering 101: If you put an adjustment knob, screw, bolt, or tolerance specs on something, some people will immediately fiddle with it. If you mark it DO NOT TOUCH everyone will mess with it. ![]() |
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#12 | |
Senior Member
Join Date: May 2010
Location: Aptos, CA
Posts: 328
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Yep, That's why you use it. No matter what direction the cam moves you want to retain that setting and take any advance/retard play out of it. Tim |
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#13 |
Senior Member
Join Date: May 2010
Location: Westlake Village, CA
Posts: 477
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Jay Steele was indeed a good builder. He passed a few years ago.
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#14 |
Senior Member
Join Date: May 2010
Location: Fresno, Ca.
Posts: 3,615
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Art,
I didn't know.....sad,....GOOD guy. Dudley Thank you. |
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#15 | |
Senior Member
Join Date: May 2010
Location: South California
Posts: 5,908
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Jay Steele...WAS one of the best! May he rest in peace! BTW..about a year/two ago an engine built by Jay was sold on ebay(up around Sacramento delta area). As a testimony to Jays' rep and work....it sold for 10K or so. Winfield equipped, if I remember correctly, and NEVER even run! Probably one of the guys here have it,eh? Last edited by hardtimes; 02-09-2011 at 03:34 PM. Reason: add info... |
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