JD-B manifold

bob6940 · Jun 22, 2018

My all fuel manifold cracked on my 41-B and needs to be replaced.There are many options for replacements.. to many.Most say they are for later year tractors(200100 and later) but I was told they will also fit mine if I swap out the exhaust pipe to because of the flange configuration.Also cold gas manifolds are cheaper than all fuel ones are and thats ok with me if it fits.Can somebody help me out with what works and what doesn't.

Mike M · Jun 22, 2018

I put a late B 201000 and up gas manifold on my 1945 B. I had installed factory .045 over GAS pistons for the 4 1/2 bore so an all fuel manifold would not do me any good anyhow. Back then i don't think anyone reproduced the right one either. I think they do now. Bolted right to the head fine. Exh pipe flange needed IIRC cut and rewelded at a different angle. My intake pipe when hooked up the air cleaner hose didn't align up very close. So I took the top bolt hole in the intake pipe filled the hole in with a bolt locktited and cut off flush or welded it shut, not sure ? then relocated it either one hole width over or 1/2 a hole ? and retapped it. This then tipped the air intake pipe to match up to the air cleaner. I also put bolts into the head instead of using studs so in the future if someone wanted to swap it they could easily remove it and do so.

bob6940 · Jun 23, 2018

Thanks Mike that's helpful info.

JD-B manifold

bob6940

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Mike M

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bob6940

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