Re: Bucking Slightly at Cruising Speeds
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Good to get those points replaced, along with the condenser. Bad condenser may be the reason your points are burnt. I currently have a Flamethrower on my car (installed this spring), with points, and it's been running well. For adjusting your throttle linkage you do not need the special tool, you just need the measurement from the top of the head to the center of the hole. On my 53 it's 2 3/4", but I'm not sure what the distance is for your car. ![]() Once you have this set you can check the arm on your transmission's throttle valve to make sure it's in the correct position. My service manual said to adjust it so that a certain size pin (smaller than the actual pin) would just fit in, following a few steps. A hook off my tool board was just the right size for this. The linkage on my cross-shaft was way too short before I adjusted it to the correct position. With regards to your low range not working after adjusting it, I wonder if the piston is leaking and that's the reason it's not engaging?? Or maybe the shift linkage is out of adjustment? Hard to imagine that the low range band is burnt up as I don't think it would get that much use. With that in mind maybe there is something else, such as leaky seals inside your transmission, that are causing the issue you originally asked about. Having said that, it doesn't really make sense that leaky seals would cause issues when letting off the gas. Maybe the issue is in your drive line and under load it's okay, but as soon as you let off something moves a bit, like a bad u-joint. Just guessing!!! I'd love to be able to go for a drive with you so could hear and feel what's going on. Keep us posted!!
Posted on: 7/29 9:33
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Re: Bucking Slightly at Cruising Speeds
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Checking in with an update! Alright, so, after completely losing spark there for a bit, back on the road. (The cause there was oil on the ground wire from the distributor to the vacuum advance, guessing I was careless after cleaning/oil the breather cap and it dripped. Only an incidental find, though). I know now that I've got good blue/white spark at the plugs. Also verified my carb adjustments were accurate, and that linkages were in spec. Went out for a drive a tonight, and really, hard to complain. That bucking sensation is still there for sure (only when it gets to operating temp). To me, seems like the direct drive is going in and cutting out, like it can't hold pressure. No bucking sensation when accelerating up hills or anything like that. Just cruise.
I haven't tried new points/condenser. That's next. I'm gonna start studying the service manual and how to do various pressure checks and see if that reveals anything. Thanks, all!
Posted on: 7/31 19:53
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Joe B.
Greenville, NC 1950 Super Deluxe Eight Touring Sedan, Model 2302-5 327 w/ Ultramatic, 6v+ |
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Re: Bucking Slightly at Cruising Speeds
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Can almost guarantee you a light bucking at light throttle is a slight lean condition in the carb. There is no way the convertor lockup is shuttling in and out without quite a bit of noticeable drama. You could always put a pressure gage on the direct drive port on the trans to be sure but I would put the chances at near nil.
Our gas today is not the gas of 70 years ago so you might need to adjust the metering rods a little richer.
Posted on: 7/31 20:02
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Re: Bucking Slightly at Cruising Speeds
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Easy enough to try that! Correct in assuming the lip on the anti-perc arm needs to be bent upwards a bit?
Posted on: 7/31 21:04
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Joe B.
Greenville, NC 1950 Super Deluxe Eight Touring Sedan, Model 2302-5 327 w/ Ultramatic, 6v+ |
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Re: Bucking Slightly at Cruising Speeds
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Winner winner, chicken dinner for Ross and the metering rods. Bent the anti-perc lip up, smoothed right out at cruise. Found my timing a bit late as well, so I bumped that up, and she found a little pep, too. Thank, you all!
Posted on: Yesterday 22:23
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Joe B.
Greenville, NC 1950 Super Deluxe Eight Touring Sedan, Model 2302-5 327 w/ Ultramatic, 6v+ |
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Re: Bucking Slightly at Cruising Speeds
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Good news!!!đź‘Ź
Posted on: Today 2:10
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