39merc block

[Mike in Mass]

the motor in my 39 that was in my fire engine ( my avitar) has the 29A heads, and the raised intake deck , I remember sombody here sayin it was a 42 motor. The motor in my celler ,that a big raised 9T on the top rt of the heads . round middle water hole , no raised deck AND it passes the pencil test !. is it a merc motor as well ?

[merc40]

looks like a mec. block to me..whats that tag on the back ken in alabama / DICK T.

[26 lakes]

Mike In Mass,
Your block is the same as a 1939-40 Mercury motor. The 99T was in the large Ford trucks. Your head should say 9T on it. I have two 99T blocks that I am going to have magged. I also have a 1941 Mercury block that is being assembled. Same block other than the intake area on the block. These blocks are 95 HP, the Fords 85 HP.

[Ken/Alabama]

Originally Posted by merc40

looks like a mec. block to me..whats that tag on the back ken in alabama / DICK T.

There isnt a tag on the back . If you are refering to the bell housing it just looks like there is something there in the picture. I had been scraping around on it looking for numbers.

[Bruce Lancaster]

USA blocks before 59 did not have cast in designations. Canadians did. USA ones need fairly detailed scrutiny to identify model and distinguish 239 from bored out 221...some of the details needed are in posts above.

[38 coupe]

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For a run down of the flathead blocks with pictures look here: http://www.goldengatev8.org/tips/Evo...heFlathead.pdf

[Mike in Mass]

Wow 38coupe thats awsum ! thanks for that link !

[2tudors]

Are these 99 blocks the only years with the keystone water passages?I have two blocks with what appears to have 19 cast on front pass side behind water pump.Both with Keystone.No markings on bell.One has 5G108661 stamped on top of intake deck,other has 4G59288*.The 9 has a line under number.Both have a factory relief,and all outer exhaust ports on both blocks seen to be massaged with a smooth edge inside port where one would cut the D into block.I was told second block was ordered for a replacement block for a gen set.Any info would be appreciated.Also both have what looks like a s stamped(shaped like a lightning bolt)ramdomly on top as well.
Thanks Dave

[2tudors]

I added pics in profile,also a 19 cast inside one keystone and 6 in other.Has freeze plugs in pan rails.I guess I am looking for conformation.I was told 47ish truck but believe are 99's...Are canadian blocks.
Thanks Dave

[Bruce Lancaster]

There was a 19 block, and I do not know how it differed from the 29 block, both dropped the pan rail plugs and had the distinct pad for manifold.. Canadians did mark pre-59 blocks, unlike USA. All the prewar 24 studs had the keystone I believe.
The Canadian serials are entirely different from USA, and there is a website partially at least listing them. Canada made its own engines so no relationship was needed with USA series.

[2tudors]

These blocks have the freeze plugs,and Keystone.Possibly Canada carried plugs over later than US.Maybe military issue?All the C59/69A I have have round passage and no relief.Also sharp edge in exhaust port.I guess the main thing is no cracks.I thought I'd get lucky and have a block that I could put some really big slugs in....

[Bruce Lancaster]

This page has the only information I know of on the Canadian serial numbers:

http://www.wnyrg.org/canvins.html

And here's a copy of their chart:



So could your #'s given in post 28 be 1944 and 1945 extensions of the civilian 1942 info shown in chart?... That seems to sort of fit.
Do these blocks have either a circular boss or an actual drilled passage to the right of the vertical oil port at back of block??
I think the boss there marking location for full-flow oil to Bren coolers and truck filters denotes a wartime '41-42 type engine, but that is my own guess.

[2tudors]

The blocks are both drilled for full flow oil....Three holes.No bosses just holes.I have C69A blocks with the the round bosses you speak of.

[Bruce Lancaster]

I think that supports my guess that these are post-1942 military numbers extending from the published 1942 numbers.
Canada made most of the WWII Ford engines for all the Empire armies, and many applications used the full flow to coolers or to filters.
The Ford USA 1937-48 engine overhaul book has many illustrations of the US version of all this, and one picture in it shows the 3 hole block.
USA engines also have the boss, and I think some of them also went into canadian production, and I believe all the postwar engines kept the boss for the third hole.

[2tudors]

Thanks Bruce,sounds like mystery block is probably a good one...I guess I will try to measure bore thickness and hopefully end up with a heavy duty block.I haven't a regular 59/69 to compare right handy.I have a little jimmy blower and thought this would be a good candidate for it.The relieving is almost done already....Maybe some get some really big pistons for this one...
Thanks Dave

[G32]

Originally Posted by 38 coupe

For a run down of the flathead blocks with pictures look here: http://www.goldengatev8.org/tips/Evo...heFlathead.pdf

Downloadable Flathead Block Pictures

[Mike in Mass]

THANKS G32 for posting that link and for taking the time to put it all together That answers allot of questions. Ive had guys ask me about the "pencil test" and they think I have rocks in my head .NOW I can just give them this link . very informative and nicely done thanks again mike p

[G32]

Originally Posted by Mike in Mass

THANKS G32 for posting that link and for taking the time to put it all together That answers allot of questions. Ive had guys ask me about the "pencil test" and they think I have rocks in my head .NOW I can just give them this link . very informative and nicely done thanks again mike p

Just uploaded the link--credit for work gos to 38 Coupe and Mills

Rumbleseat collected Flathead info--hope it works.

http://www.flatheadv8.org/rumblest/intro.htm