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I have a 1951 F6 with a flathead in it. This is the re-builder's tag that is on the motor near the distributor. I can pretty much figure out that the motor has been bored 60 over, and the rods and mains are 20, and the cam is 10. What do the 4 digit numbers represent, model numbers for pistons and bearings?
I think that the main thing to try and decode is what is Model CRS? (Yes, I know Can't Remember Squat!) It may actually tell what the motor is.
I think that 4-38809 is just a consecutive number for the re-builder's records.
The casting number on the heads is 1CM or ICM. Mercury 255???
The motor is seized, so I cannot get an accurate stroke measurement.
Could be a Merc, you never know. No telling what CRS means, could be related to the contract or something internal to the company.Have you had the heads off?
Bore .060 over and crank and rods .020 under. Just a guess on the cam spec but I would say base circle .010 under. ( I used to work in a machine many moons ago)
Bore .060 over and crank and rods .020 under. Just a guess on the cam spec but I would say base circle .010 under. ( I used to work in a machine many moons ago)
I took the cam spec to mean the cam journals were 10 under.
CRS, Can Race Sometimes? Here in the US the authorized rebuilder was Fred Jones Ford. But, I am sure most on here are aware of FJF.
11 Western States FoMoCo Authorized Rebuilder: GPD - Genuine Parts Distributors (formerly Tumador Engine).
Fred Jones Ford was headquartered in OK, their rebuilding facility was the former OKC Ford Assembly Plant (it's there today, restored for mixed usage).
11 Western States FoMoCo Authorized Rebuilder: GPD - Genuine Parts Distributors (formerly Tumador Engine).
Fred Jones Ford was headquartered in OK, their rebuilding facility was the former OKC Ford Assembly Plant (it's there today, restored for mixed usage).
Were GPD and FJF defined territories that they serviced or were they both nationwide or more? I know you indicated GPD was western states. Living in the east, I never heard of GPD.
I was not aware of GPD. Finding a FJF component in a vehicle, we considered it "Good as new".
Were GPD and FJF defined territories that they serviced or were they both nationwide or more? I know you indicated GPD was western states. Living in the east, I never heard of GPD.
I was not aware of GPD. Finding a FJF component in a vehicle, we considered it "Good as new".
AFAIK, authorized Ford rebuilders were assigned specific territories. Fred Jones was by far the largest.
Jones also owned Ford, Edsel & L/M dealerships in OK .. possibly other states as well.
GPD is still in business, originally located in Vernon CA near the Farmer John Meat Packing Plant. The smell was simply awful!
They have since moved to the City of Industry (located in the San Gabriel Valley). The only foul smelling fumes are from diesel trucks and locomotives, as Industry is a huge RR marshaling area.
I stand corrected . That's what I get for not using my reading glasses. Small things like comma's get missed. As there is a big difference between, Piston Pin & Retainer and Piston, Pin & Retainer.
That is great Matthewq4b. Thank you for your help in decoding the data plate. Now I will have to see if it is a 239 or a 255. I plan on taking the motor out of the truck and taking it apart. Then the mystery will be solved.
That is great Matthewq4b. Thank you for your help in decoding the data plate. Now I will have to see if it is a 239 or a 255. I plan on taking the motor out of the truck and taking it apart. Then the mystery will be solved.
Best regards,
Chris
No problem be sure to note Number Dummy's corrections on my post.
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