Ooopppsss I am reposting this from the Street forum, I think it is better here 😅


Hi all you Y-block lovers! I'm new to this forum from Athens, Greece with my '54 Mercury Monterey driver. It has the original 239 with low mileage, manual with Overdrive, 6volt positive ground, the 2140 Teapot and, the ' temperamental' Load-O-Matic..

Before learning that need a SUN machine, way back I tried to adjust the spring weights and really messed it up. I found one in England but it came back and still is no good. I've always had problems and lately it misfires especially in the mid RPM range.


Here are my novice questions for your kind expert consideration:

1. Is there a way I can manually tune the springs without the SUN machine?

2. Are there reliable Load-O-Matic tuners in the states I can send it for proper tuning?my Load-O-Matic for tuning or I just forget about them?
3. Should I simply forget about it and go for a point unit with centrifugal weights like the ones used in the later Y-Block engines? And frankly I would like to keep it as buy now. I ( I can easily do Ted 's vacuum Teapot conversion I read about in this forum) know it quite well
4.
5. I am also open foran HEI distributor that looks like my original and can fit with the shaft length and tang coupling to the oil pump. However there is a question with the wiring of my overdrive's kick down switch wiring on the coil, because I tried the Pertronix unit it way back and it did not work.

That's it, thank you all in advance
Aris

The vacuum pump mentioned, is often used to bleed brakes. If you do a search on the net, these vacuum pumps should come up. There are also various vacuum gauges available but will require some plumbing work to "T" into a vacuum line.  With the gauge and vacuum pump attached directly to the distributor advance can, you should be able to see with a timing light how the advance is responding in relation to the vacuum signal applied. This will not be precise but with a little experimentation, you may be able to get a feel for how well the advance is responding. I have rebuild/recurved numerous distributors through the years and indeed have a proper machine to do this. However, I have little experience with the Load O Matic. My 1955 Ford truck shop manual shows 4.5 to 6 inches of mercury/vacuum for the various engine and distributor combinations. As KULTULZ asks: What is the exact curve in the 54 Merc WSM?  Hope this helps, let us know....

64F100 57FAIRLANE500

KULTUZ and DEARBORN first I attach the curve chart. The check valve is another eye opener!

If I am correct based on the article my check valve should be marked with a 6 or a 7, correct?
However, I'm a bit confused because in my picture the Mercury parts book lists it with PN. B5A-9905-B but mentions ' stamped 25' unless this is for a Ford PN?

DEARBORN I believe you're showing me a way to adjust the springs while on the car, correct ? I have a brake bleeder pump and extra vacuum gauge and hoses and T's, no problem. Now if I got this right using the T I should splice it in the venturi vacuum line then observe the numbers based on my specs. ( I need to cut and add a hose along the metal line, something I wanted to do way back anyway)

There is another test I have to do about shimming which I had no idea about as Ted mentions

So Monday when back I have some great work to do! Yesssss🥳