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yarnall

Pedigreed Bulldog
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Posts posted by yarnall

  1. My 1951 405A is 6 volt.  Also positive ground.  It should not matter if it is positive or negative ground.  Just hook positive to positive and negative to negative to jump it. I don’t remember if we did a tune up in my 405A.   We might have just cleaned everything up and ran it. I think we replaced the coils but if we did we just went to NAPA and asked for a 6 volt coil.  They always ask what I am working on.  I tell them but them tell them what parts I want. Let’s see a photo. Good luck.   Mike 

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  2. I’ve had the A30 for 11 or 12 years, but have done nothing with it. It is very clean. Just a little rust on the fenders at the bracket.   
    A friend worked out of the overnite terminal in Stowe PA when they were bought out.  I asked if he could get me a sign from a trailer but that was the best he could do.  I have 2 overnight H63’s that are on the project list. Mike 

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  3. I AC is a fire truck and it has a switch in the dash for distributor, mag or both.  The spark is in the left life of the steering wheel and I push it all the way up to start.  
    My AB has only a mag but has been messed with and has a newer switch on the dash.  The linkage for the spark and hand throttle are gone so I cannot adjust it.   Mike 

  4. On 6/9/2022 at 9:38 PM, mattb73lt said:

    I'm probably off. From what I saw in a quick search I did, the 421 was a "cheap" version of the 42. No oil cooler and several other things deleted. I think I was mixing it up with the 422, which did have an overhead valve engine. There was a site from where the B model registry came from that had a lot of engine and transmission reference material from Mack posted on it. I can't seem to find it, so it may be gone.

    422 has an over head value Thermodyne.  I think an EN 460.  Mike. 

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