German H-block?

[rotorwrench]

The G29T from the first link looks like it has a 1953 date code. They manufactured them a lot longer than Ford USA did. Finding the wartime stuff is difficult but it's likely out there.

This looked interesting but I didn't have time to read it all. I sure can't afford it.
http://www.usmbooks.com/ford_V8_motor.html

German Military truck photos may be out there for the Ford V3000 series trucks that were built.

[21stud]

rotorwrench,

now that is nice find! Very similar block than mine, expect naturally it is 21stud.
Oil pan rails look similar, crank snout is also very small.
and those center water jacket holes look familiar.
24stud was next step after that?
after block change I think they used same cranks with small mains with those odd very thick bearings!

Neat brochure, although very expensive.

[21stud]

Slow process with this. few photos about cam, lifters, rod markings and piston. those are hollow/ slotted lifters. weight is 59 gram.
Cam is steel with pressed on aluminium gear.
Pistons are just like 239" USA but made by Mahle.
Any comments about rod markings?

[Bored&Stroked]

The rods looked like the early style rods - not nearly as much material around the top of the big end as later 91A, 21A or 29A rods. If it was mine and a 4" crank fit, then I'd put the later 49-53 rods with the insert bearings into it. As the cam appears to be steel, would be a good candidate for a regrind into a more radical profile like a Potvin 425 Eliminator!

[38 coupe]

The beginning of the piston part numbers, 99T, are 239 truck pistons. The beginning of the rod part numbers, 48, are starting in 35 production for the earlier flanged rod bearings. Interesting combination.


Externally the block looks very similar to USA 38-40 24 stud motors except lacking the core plugs in the oil pan rail.


Are the block main bearings bored for the smaller 2.4 inch crank main inserts or the larger 2.5 inch crank main inserts?

[21stud]

Sponsored Links (Register now to hide all advertisements)

Yes, block main bearing bore is 2.5 inch. this means late crank will fit with late bearings.
so far it looks like this is german equivalent to 239 truck engine, 1939-40 era? with old style crank and special thick main bearings.

[21stud]

A little update, got it sonic tested. I must say I am happy with these results.
thinnest spot we found was 5.4mm, average walls are 6.3 - 7mm!
remember, this is std bore block.

I am curious, what kind of wall thickness you guys have got from USA prewar truck/merc blocks? and what about 59 and 8BA blocks?

[40larry]

Originally Posted by 21stud

Hello all barners, I am flathead enthusiast from Finland. Been lurking here long time and learned a lot. Thanks to all members here, sure a lot of knowlegde!

I thought I show some photos of this block I have . I only have block with flywheel, crank, rods, pistons and cam. No oilpan, heads, timing cover or int/ ex manifolds for this.

My past experience is -37 21 stud engines, so just recently I started to identify this one.

It is 24 stud, 239, appears to be STD bore. prewar I believe, because short snout crank with small bearing journals. Bellhousing have cast H and VR below it. No bulges on oil pan rails.

Cam gear is aluminium, surprise? I think it usually is fiber in prewar engines?

I believe it is german because there is mahle pistons and based info I found from this swedish website:
http://www.earlyfordv8.se/h-markt-motorblock/

too bad, no photos of similar engine but later ones are covered well.
mine do not have rear distributor boss in bellhousing, so I think this must be early 24 stud Germany engine. Similar with USA blocks.

Very strange is the fact it's 3-3/16" bore? and cylinder walls are thick. I allways thought all prewar Fords were 221"? is this German equivalent Mercury block?

Other real suprise was main bearings. I assumed this must have small mains as crank is short snout type. but what surprise was to find 81A markings in those bearing caps? still crank have 2.4 mains but bearing shells are very thick to compensate difference? I have never seen bearings like this?

Do you guys have some info about these, anybody else got similar engine?

take a look attached photos, please.

Your engine block has a center hole between cylinders two and three that is a shape I have never seen on a USA made block. All USA 221 blocks have a trapezoidal shape hole and all USA 239 blocks have a round hole in that location..

[Bored&Stroked]

Originally Posted by 21stud

A little update, got it sonic tested. I must say I am happy with these results.
thinnest spot we found was 5.4mm, average walls are 6.3 - 7mm!
remember, this is std bore block.

I am curious, what kind of wall thickness you guys have got from USA prewar truck/merc blocks? and what about 59 and 8BA blocks?

That is about .212 . . . which is about right for a truck/merc block and/or a 59AB (STD bore). I have not yet sonic tested a 49-53 block (new or STD).

[40larry]

Originally Posted by 21stud

Yes, block main bearing bore is 2.5 inch. this means late crank will fit with late bearings.
so far it looks like this is german equivalent to 239 truck engine, 1939-40 era? with old style crank and special thick main bearings.

The crankshaft you have most likely uses 2.0 inch early 221 rods. If block started out as 239 it should have 81A size mains and the larger 99A or 29A rods.