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01-13-2021, 06:29 PM | #21 |
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Join Date: Jun 2010
Location: San Antonio, Texas
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Re: German H-block?
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. Last edited by rotorwrench; 01-13-2021 at 06:35 PM. |
01-15-2021, 01:01 AM | #22 |
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Location: Finland
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Re: German H-block?
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. |
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03-28-2021, 02:43 PM | #23 |
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Re: German H-block?
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? |
03-28-2021, 05:50 PM | #24 |
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Re: German H-block?
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!
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04-03-2021, 07:55 PM | #25 |
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Re: German H-block?
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? |
04-05-2021, 12:54 AM | #26 |
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Re: German H-block?
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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. |
06-10-2021, 10:23 AM | #27 |
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Re: German H-block?
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? |
06-10-2021, 12:14 PM | #28 | |
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Re: German H-block?
Quote:
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.. |
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06-10-2021, 12:24 PM | #29 | |
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Re: German H-block?
Quote:
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06-10-2021, 12:29 PM | #30 | |
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Location: Northridge, CA
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Re: German H-block?
Quote:
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. |
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