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Joined: Jul 2013
Posts: 18
Grease Monkey
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OP
Grease Monkey
Joined: Jul 2013
Posts: 18 |
Taking motor apart, its obvious theres been a few different hands in here.I dont think they knew anymore about this than i do. First attempt at this, after reffering to the school in session article, ( probly the best thing i ever saw on any forum of any type,much thanks to Ray and others) . My questions are is the plug on back of #4 a std knock out freeze plug to be removed before cleaning,and were there after market heads, made in 25 as i have one dated but no bow tie and non coded date. Also cam gear is larger 13/16 with rub on cover. Ihave another block with both metalic cam and crank gears (5/8 ) .comments answers and questions all appreciated
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Joined: Oct 2003
Posts: 814 Likes: 1
ChatMaster - 750
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ChatMaster - 750
Joined: Oct 2003
Posts: 814 Likes: 1 |
Leadchunker the plug in the rear is a knock out plug in the water jacket. Yes they did make after market heads. Also the head from a 1914 will fit on a 1926 engine I am told. The date code stamps changed in 1922. You should have casting dates on the block and head something like (D-19-5) which would be April 19, 1925. As far as the timing gear goes; I guess someone else could answer that. Hope this helps.
Steve
'25 Superior "K", '79 Corvette , '72 Corvette LT-1 & 1965 Corvette Coupe
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Joined: Jul 2013
Posts: 18
Grease Monkey
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OP
Grease Monkey
Joined: Jul 2013
Posts: 18 |
Allrighty, gonna take that rascal out o thar.jackets are full of rusty mud. Got afew heads and a couple of blocks, just that one of the heads has a little different appearance and the date is not in code, casting # is a little different like a knock off. Thanks for the response
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Joined: Oct 2011
Posts: 140
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2011
Posts: 140 |
Hi ?,
Re the cam gears. The generator driven oil pump models had a metal cam gear, when the oil pump went to the crankcase, a fibre gear was used. You don't say which model you have. The early sixes has a fibre gear that was a little wider (unsure of exact width)but was identical otherwise. It could be used by turning some off the gear and hub.
With a metal cam gear, the engine has a distinctive rattle at idle and quite a whine with some revs applied. I think the fibre gear would have been to quieten things down a little.
Regards
Al
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Joined: Jul 2013
Posts: 18
Grease Monkey
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OP
Grease Monkey
Joined: Jul 2013
Posts: 18 |
Thanks AL, both engines are 25s. Are there any problems running the generator with the fiber gear?
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Joined: Jul 2013
Posts: 18
Grease Monkey
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OP
Grease Monkey
Joined: Jul 2013
Posts: 18 |
Let me refraise that, is there a problem driveing the metalic generator gear with a fiber cam gear, witch is driven by a metalic crank gear?
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Joined: Oct 2011
Posts: 140
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2011
Posts: 140 |
Hi ?,
I had a fiber cam gear fail in my '25 at about 18,000 miles so there is not really too much of a problem. However, fiber is not as strong as metal.
Regards
Al
Last edited by AlBrass; 03/30/15 06:36 PM.
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Most applications use a steel-fiber-steel. Otherwise the noise will drive you crazy. The 1927 engine is unique, as we have a FIBER crank gear and a STEEL cam gear.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Oct 2011
Posts: 140
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2011
Posts: 140 |
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Joined: Jul 2013
Posts: 18
Grease Monkey
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Grease Monkey
Joined: Jul 2013
Posts: 18 |
Thank you both very much. this my first go round,and like i said before. Aint scared,just ignorant!
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