F60L resto NSW Australia

[Mike Cecil]

It (ie using a helmet dizzie) is if you use the earlier camshaft, but why would you? That would seem to be a backward step to me. But I suppose if that is what the assembler had to hand.

I went the other way, from a helmet to a crab dizzie with no problems: I don't remember having to use an adapter or change the timing gear cover, as I think the bolt holes lined up (but it is 20 + years ago now!)

Mike

[Jacques Reed]

Hi Mike,

Attached is the 3 bolt divers helmet distributor to a crab distributor adaptor plate I mentioned.

Looking at it, and the description, a cam button spacer is needed for some stock shallow cam noses.

So perhaps the other way to use an earlier distributor on a post war engine and vice versa is to also change the timing gear cover. Again, I am not sure if this is possible so perhaps another person can enlighten us. I agree, I don't know why one would want to use a divers helmet distributor as opposed to a crab distributor on a later engine but nothing surprises me when it comes to the old engines!

So to get back to David's original question, once he inspects the water jacket openings in the block that will be the final arbiter of what approximate year his engine was manufactured. After that it will be easy to decide what, if any, items have been changed from original.

Cheers,


http://www.speedwaymotors.com/Flathe...olt,25076.html

[David Nicholson]

Hey Everyone, thanks for all you input....Engine looks like a 1945 casting. There are no raised numbers on the RH front of the block. Numbers have been cast/stamped into the rear bell housing...

Anyway, my valve guide removing crowbar and 'top down' valve guide drift should be arriving any day now.

Once the valves are out, I'll remove the cam bearings for the acid dip.

Current plan is to have the engine re-bored (Currently standard), purchase new pistons. Install new std Main/conrod bearings. All crankshaft dimensions are within 0.001 of round.

Install new (single piece guides) valves, guides, etc.

I haven't measured the cam yet, but they seem quite expensive too.

The last thing will be to get my hands on some double-row 'V' belt water pumps.

[Tony Smith]

Originally Posted by David Nicholson

Hey Everyone, thanks for all you input....

The last thing will be to get my hands on some double-row 'V' belt water pumps.

Jee, haven't they got expensive?

http://www.ebay.com/itm/1937-to-1948...ZZAm0z&vxp=mtr

[Tony Smith]

Originally Posted by Jacques Reed

Hi Mike,

Attached is the 3 bolt divers helmet distributor to a crab distributor adaptor plate I mentioned.

Looking at it, and the description, a cam button spacer is needed for some stock shallow cam noses.

So perhaps the other way to use an earlier distributor on a post war engine and vice versa is to also change the timing gear cover. Again, I am not sure if this is possible so perhaps another person can enlighten us. I agree, I don't know why one would want to use a divers helmet distributor as opposed to a crab distributor on a later engine but nothing surprises me when it comes to the old engines!

http://www.speedwaymotors.com/Flathe...olt,25076.html

The Ford Manuals describe the method to interchange the "Diver's Helmet" and "Crab" distributors. The two timing covers are interchangable, and are the same height from the block to the dizzy mounting surface. 18-6019B has the 3 bolt mounting pattern for the Divers Helmet (and earlier) distributors, and 21A6019 has the 2 bolt pattern for the Crab, the '46-on and the Thames/Lucas styles.

The Camshafts however, are different. A long cam is used with short drive key of the 3 bolt dizzy's, and a short cam with the longer drive key of the 2 bolt style. If you need to fit a "Short" 3 bolt dizzy to a "Short" cam, in addition to swapping the timing cover there is a Ford spacer. If you are fitting a "Long" Crab dizzy to an earlier "Long" cam, then the Speedway style spacer will provide the additional length.

This might be necessary in wartime if you are maintaining a fleet of LP2 Carriers or MCP trucks with the Divers Helmet dizzys, and a replacement engine of the Crab style is supplied. To maintain commonality, you might want to replace the Crab with a Divers Helmet?

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