British Built Flathead ID

[scooder]

Interesting,
Those rods are NOT 91A rods, the caps are but the rods ain't ! The rods are 48's!!
When you've had a bunch of these flathead parts in your hands, you can tell at a glance the rods ain't 91 or 21A which are much beefier where the beam meets the journal area. The earlier rods (like yours) are petty slender down there.
All the rods in your earlier pic are 48's, they all got 91A caps on them?
I've seen mixtures of 21A and 91A rods in a war time flat motor, but not swapped caps.
Martin.

[ajmac]

I guess all sorts of odd things went on at Dagenham during the war, it must have depended on what they had in stock. I will check the other rods for cap numbers.

[ajmac]

Only 3 of the con rods have 91A caps, the rest match the rods. As you say, all the rods are the slim 1937 style ones not the later type with strengthening ribs near the big end. I will add a photo with a comparison against one I removed from a wartime US 239.

[ajmac]

Ford UK Rod on the right.
Ford USA 1943 Rod on the left.

[ajmac]

I just discovered that the oil pump is beyond repair....can anyone help with a second hand unit?

[pooch]

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I hope my pilot motor has rods a bit thicker in the uppers than these pics show.

Will know soon when I pull it out .

[mercman from oz]

This picture shows two 21 Stud Ford V8 Heads that were for sale at a recent Swap Meet. I believe that the one with the Firing Order cast into it is from the British Ford Pilot. The other "plain" Head is probably Canadian, from a 1937 or early 1938 Ford V8. What do other Barners think?

[Mart]

"Nervous Bob Froch ought to be able to help you out.
http://www.bobfroch.co.uk/

I have some parts from a 21 stud motor that might be useful to you, I'm in the Midlands though, (Solihull), Bob is over your way.

Mart.

[ajmac]

Originally Posted by mercman from oz

This picture shows two 21 Stud Ford V8 Heads that were for sale at a recent Swap Meet. I believe that the one with the Firing Order cast into it is from the British Ford Pilot. The other "plain" Head is probably Canadian, from a 1937 or early 1938 Ford V8. What do other Barners think?

The lower head is a Dagenham manufactured head.

Thanks for the link mart.

[ajmac]

Cleaned up half the Rods this evening and one of them has a different little end to all the others. Is this an earlier version (although it has the same forging number) or has a machining step been missed? Note that the rod on the left is on with the 91A cap.

[Mart]

Alastair, don't quote me on this, but I think that is the factory method for balancing the rods. Hopefully someone will confirm or refute.

Mart.

[Bruce Lancaster]

Marks in lower picture are I think Brinnell hardness tests. I knew Ford did 100% Brinnell testing on pitman arms and such...never noticed it on rods. I wonder if Ford tested all of them and I just haven't noticed?

[Vosper v8]

Hello Fellow searchers for info,


I have a collection of bits and 2 complete engines, one less it's ancilliaries and one complete which, when assembled I can run, hopefully. The best engine has 3 1/16" +030 bore but crank and rod bearings are standard size and tolerances appear to indicate that it has not had too much running time. I am restoring a 1948 Vosper launch so my engine is marinised.



I am having some trouble determining exactly what I have with regards to the engine I will use once rebuilt.



It has engine block with cast in markings D29U with number 7 below that. There is a hand engraved engine number, R1288903C located on the face of the top where the inlet manifold is fitted. Please refer to the pictures.


The con rods are stamped 21A with seperate shells which have a land on one side. The pistons are 3 ring type . Again please refer to the pictures.


From reading through various bits of excellent historical info posts, most indicators eeem to place it around 1938. It has water pumps in the block which contain the engine mounts, it has 21 stud heads and a single carb.


I also have 3 different distributors. One magneto, which does produce a spark, one late style lucas, which although dirty is complete with a good cap plus an early football style. Again please see the pics.


I am wondering if I would be able to fit the later style to my engine version?


To conclude, any help to identify what I have would be very much appreciated as would be the identification, specifically of the rod bearings,which have markings ET6 6213 and 6214 with the letter G inside a box and AB stamped near the part numbers. These appear to be standard size. Again please see the pics.


I have a set of new main bearings and would like to replace the rod bearings but if I can't find any, they are serviceable.


Many thanks to all the contributors that have made my initial investiations bear some fruit, I really hope there might be someone out there who can add to that.

[glennpm]

This is a great compilation from 38_coupe:

https://fordbarn.com/forum/showthrea...4280&showall=1

38_coupe and I consolidated this into one pdf file. From the link below, open "Engine Identification".

https://www.dropbox.com/scl/fi/2ua1s...=qe0z6zw2&dl=0

[corvette8n]

Glen I’m getting an error on the pdf link.

[glennpm]

It shouild work now. It is:

https://www.dropbox.com/scl/fi/2ua1s...=qe0z6zw2&dl=0

[corvette8n]

Yep that works, Thanks for your research.

[glennpm]

You're welcome!

[cas3]

I have 37 motor with the firing order on the heads. Do we assume those heads were British or Canadian war time only?

[4 MAINS V8]

Alistair.New and used oil pumps for sale on UK ebay.