LanceRobson
Well-known member
- 1,638
- 206
- 63
- Location
- Pinnacle, Stokes County, NC
Well, if I were more organized this thread would have started a few months ago when the M41A1 Walker Bulldog TankLady AKA Angie G. and her hubby Jack G. (for the old timers in the MV hobby-40 years or so) own was running a might under the weather...
The power pack is out and we're working on a low power issue so we can get to a transmission issue (have you noticed that sometimes with MVs your projects have projects?).
So, as of last week the engine still was pretty rough so we did a compression test which came up fine, checked out the condition and resistance of the ignition wiring harness, re-timed the magnetos yadda, yadda yadda, BS, BS, BS, ad nauseum.
Hmm....
So we put the whole thing in the "too hard box" for another week (we only get about 5 hours a week to deal with it), ordered 12 new plugs, lead substitute, fuel stabilizer etc and came back to it today.
After gapping the plugs and installing them the engine fired on the first crank and ran better than it has in quite a while but it was not firing on all cylinders at first which resulted in some pretty good back-fires out of both carbs and a lot of balls of yellow-orange flame out of the exhaust stubs. As it warmed up all the cylinders came on line and the only issue was excessive orange and blue flame at the stubs.
After some thought we re-timed the magnetos a few degrees more advanced and gave it another try.
Now it runs a bunch better, accelerates to the governed speed without hesitation and after it is warm it has no visible flame except for the fraction of a second after the throttle is let off. But, it is still getting a lot more fuel than it needs so next week we'll check the carb float level, adjust the jets and idles screws. We also need to hunt down new points after which we'll need to re-time the mags and check the timing and gap on all the mag lobes to be sure they are all good.
Why didn't we take up stamp collecting? At any rate with any luck we'll be putting the power pack in sometime in August and get onto the late shift issue.
A couple of years ago when their DUKW had a oil related engine failure and it got re-powered I was supposed to document the rebuild and re-power. OK, I'm a slug and we got too involved with the work to document it. I'll try to be a better boy this time....
So, enjoy the pics. With any luck one of Jack and Angie's grandkids will come by and teach me how to use the video and sound feature on the camera. As you can see all of us are old enough to fart dust and that is beyond our comprehension.
Lance
Edit: The captions didn't follow the images so here goes. Starting with the first image:
1 The patient.
2. The money pit.
3.The two boxey looking curvy thingies on the sides are the fuel tanks. This critter gets a whopping 0.7 MPG... But only if the wrench turners have done everything correctly, if not things could even get pricey.
4. Pump priming for the first crank.
5. Turning fuel into noise. Harley owners take note.... "That's not an exhaust. THIS is an exhaust!"
6. Ball of flame? What ball of flame?
7. Eye of newt, wing of bat...
8. The guy in the middle is Jack G. Mr. G won't smile again until he can drive his tank.
The power pack is out and we're working on a low power issue so we can get to a transmission issue (have you noticed that sometimes with MVs your projects have projects?).
So, as of last week the engine still was pretty rough so we did a compression test which came up fine, checked out the condition and resistance of the ignition wiring harness, re-timed the magnetos yadda, yadda yadda, BS, BS, BS, ad nauseum.
Hmm....
So we put the whole thing in the "too hard box" for another week (we only get about 5 hours a week to deal with it), ordered 12 new plugs, lead substitute, fuel stabilizer etc and came back to it today.
After gapping the plugs and installing them the engine fired on the first crank and ran better than it has in quite a while but it was not firing on all cylinders at first which resulted in some pretty good back-fires out of both carbs and a lot of balls of yellow-orange flame out of the exhaust stubs. As it warmed up all the cylinders came on line and the only issue was excessive orange and blue flame at the stubs.
After some thought we re-timed the magnetos a few degrees more advanced and gave it another try.
Now it runs a bunch better, accelerates to the governed speed without hesitation and after it is warm it has no visible flame except for the fraction of a second after the throttle is let off. But, it is still getting a lot more fuel than it needs so next week we'll check the carb float level, adjust the jets and idles screws. We also need to hunt down new points after which we'll need to re-time the mags and check the timing and gap on all the mag lobes to be sure they are all good.
Why didn't we take up stamp collecting? At any rate with any luck we'll be putting the power pack in sometime in August and get onto the late shift issue.
A couple of years ago when their DUKW had a oil related engine failure and it got re-powered I was supposed to document the rebuild and re-power. OK, I'm a slug and we got too involved with the work to document it. I'll try to be a better boy this time....
So, enjoy the pics. With any luck one of Jack and Angie's grandkids will come by and teach me how to use the video and sound feature on the camera. As you can see all of us are old enough to fart dust and that is beyond our comprehension.
Lance
Edit: The captions didn't follow the images so here goes. Starting with the first image:
1 The patient.
2. The money pit.
3.The two boxey looking curvy thingies on the sides are the fuel tanks. This critter gets a whopping 0.7 MPG... But only if the wrench turners have done everything correctly, if not things could even get pricey.
4. Pump priming for the first crank.
5. Turning fuel into noise. Harley owners take note.... "That's not an exhaust. THIS is an exhaust!"
6. Ball of flame? What ball of flame?
7. Eye of newt, wing of bat...
8. The guy in the middle is Jack G. Mr. G won't smile again until he can drive his tank.
Attachments
Last edited:
