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Case Tractors Discussion Forum

VAC engine/VAH engine

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Frank Vantacich

10-22-2009 21:15:17

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This may be a silly question but I just wanted to check with the experts before I go through all the work. Is a VAC engine interchangeable with a VAH? They look identical on the outside, except the VAC has an external oil filter. The VAH engine has a plate bolted on in place of where an external filter could be mounted though.
The VAH is a 1948, I am not sure of the date on the VAC engine, is there a stamped number on it that would translate to a year?

Thanks for the help.

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10-22-2009 23:51:29

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 Re: VAC engine/VAH engine in reply to Frank Vantacich, 10-22-2009 21:15:17  
Va series engines are all interchangeable and most of the parts are interchangeable. Oil filters were an option until 1950ish. Make sure you use the right base on the right block, cast iron bases do not work on late model VTA-328 blocks, and the aluminum ones will work on all of them. The serial number for the engine will be in the upper RH corner above where the oil filter would go. What is wrong with the VAH's engine? I also rebuild mine with the newer style flyweight style governor as the ball type wear out and are slow to respond. If it's any though I'm putting a 1950 VAC engine in a 1952 VAS and I have a 1954 engine in a 1944 VAC, just make sure you use the right governor controls from the throttle to the governor arm.

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Joe (Wa)

10-22-2009 23:07:29

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 Re: VAC engine/VAH engine in reply to Frank Vantacich, 10-22-2009 21:15:17  
I am no expert and have forgotten much I once knew. Corrections invited.

I think both VAH & VAC take the same engine, there were some internal & block attachment changes to later 40's engines mostly during 1949 & up that I don't think make any difference in a swap.

Assuming original the '48 has a round cover on the timing cover for access to the governor & flyweight balls. Later VA engines had flyweights riveted to the cam gear, no access cover on the timing cover.

VA engine serial nrs are stamped into the block above the starter. '48 s/n should be stamped horizontally just below the cylinder head gasket. Should be 3 letters + 124 + 5 digits, eggs ample VAB 124 12345, where VAB is chronological (after VAA 124, before VAC 124)but not model year specific due to overlap and mix. 5 digits are s/n for that one engine.

Later VA engines serial nrs were A47 + 5 digits ('49,'50,'51???) Again lots of overlap and mix.

~'52 through end of production serial nrs are stamped vertically lower down (behind oil filter or plate) 2 digits + letter + 5 digits, I.E. my '53 is 72-G-05214. I have seen '53 and later also starting with 73 + letter + 5 digits.

Look below the dipstick for the block casting nr 328A and on the cylinder head for casting nr 148 (gas) or 159 (low cost fuel). Early timing cover before s/n A47 w/gov access cover casting nr 122, s/n A47 & after w/o access cover 334.


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