Vintage Mallory Adj. Proportional RPM Limiter
 

Can somebody help me out on something? I have, somewhere packed away, a Mallory unit similar to this one in the provided pic, but the dial bezel isn't red, it's silver with a blueish color banner that has MALLORY at the top of the bezel over the dial knob. Anybody familiar with this piece? I'm pretty sure it's vintage but don't know a lot about it...how old and what model. It is very similar to what's in the pic. From the looks of it it had a rough life. I can't remember where I packed it or I would provide a pic. Anybody have any vintage Mallory parts books to determine what I have? At one time it did work but since I removed it 20 or so years ago I'm not sure. Is it even worth having it looked at? Other info I found on line for part number is #642, 643, and 644 but without a pic IDK.


https://www.yenko.net/ubbthreads/pics...84-mallory.jpg

Re: Vintage Mallory Adj. Proportional RPM Limiter
 

The red seems to come after the blue ones historically. I think the reds were showing up around the early 1970's. What is the dom?

Re: Vintage Mallory Adj. Proportional RPM Limiter
 

I believe blue are older than red and most have a date (see below). Some have both colors. These are available on eBay and nos are not too pricey.

https://www.yenko.net/ubbthreads/pics...7385-image.jpg
https://www.yenko.net/ubbthreads/pics...7386-image.jpg
https://www.yenko.net/ubbthreads/pics...7387-image.jpg

Re: Vintage Mallory Adj. Proportional RPM Limiter
 

Looks similar but I'm not sure it's the same model, the box is painted black, a few times if my memory is right, and I can't read or can tell if there is a serial plate on it. I still haven't found it though in any case.

Re: Vintage Mallory Adj. Proportional RPM Limiter
 

Does anyone know if the Blue ones are for CD / Capacitive Discharge ignitions (transistor ignition) and the Red ones for Conventional Points ignition ?
The Mallory box black coils are tagged this way... Blue for CD/TI ignition.
Red for Points ignition.

Re: Vintage Mallory Adj. Proportional RPM Limiter
 

I have 74 and 79 Catalogues...not sure what to look up but here are a few pictures.

Dave
67 Nova Boy
1974...
https://www.yenko.net/ubbthreads/pics...5-img_1744.jpg
https://www.yenko.net/ubbthreads/pics...6-img_1745.jpg
1979...
https://www.yenko.net/ubbthreads/pics...7-img_1741.jpg
https://www.yenko.net/ubbthreads/pics...8-img_1742.jpg
https://www.yenko.net/ubbthreads/pics...9-img_1743.jpg

Re: Vintage Mallory Adj. Proportional RPM Limiter
 

Dave,
Thanks..that info cleared up a lot of question marks on compatible components.
I'm using a HP 310 "4 Cam" double life REV Pol with the 2 Pc. 4001 cap....
9 ML-187A petronix 4 cam phase II conversion W/O rev limiter.
Mallory Super CD , Mallory Electronic (TI) Blue tag Coil & K66 DELCO REMY Voltage Regulator.
Now I know which rev limiter to use
( if I use one)
Regards,
Tom

Re: Vintage Mallory Adj. Proportional RPM Limiter
 

If you need more photo's on anything in the two catalogues...just ask. Or if anyone needs more info.

Dave
67 Nova Boy

Hello everyone. Revisiting my original post from 10 years ago, wow!!!

I Finally found a Mallory Rev Limiter Control #28770 I've been searching for. I couldn't find the one I started this post with though. I've moved out recently and never found the one I put away. Currently I'm looking for install instructions and can't seem to get a handle on where to look. Can someone help me out?

If anyone knows about this control unit I have a few questions. Thank you.

Hope everyone had a safe Memorial Day.

‘

Kurt posted the instructions below w/ the #28770 he sold a few years back in this thread…
https://www.yenko.net/forum/showthread.php?p=1447625

I didn’t see the #28770 but it may be on this page w/ a bunch of Mallory user manuals…
https://www.manualsdir.com/brands/ma...ition/125.html

:beers:
~ Pete

.

This is in my 1969 Z28 on works perfect.

NOS going my 1966 Biscayne.

In the Biscayne and works perfect!

Thanks Pete for the pics and the links. Much appreciated. I did see the instructions that Kurt posted while researching this, but needed the verification to be sure. The manual link didn't show the 28770 as you said, but the 642, 43, and 44 was there. Curious if these units would be considered the same as the 28770 in form and function. I need to read installation on both and compare.

One question needs answering though. Is the 28770 compatible with the HEI? I still have my points distributor, but currently I've been using a Dave's Small Body HEI for a decade or more, and the original factory tach, which was MIA when I bought the car, I replaced with a reproduction unit which works perfect with Dave's SB HEI.

Any thoughts there?

Thanks for the pics from OWTLAWPERFORMANCE. In the 'glove box' keeps the interior looking stock and out off view. We had a friend that had one in a 66 Nova under the dash. When we were out and about we use to "F" with him and adjust the dial back a few thousand. He never look looked at it when he got back in the car...and the fun started there. He was a good egg though. Yours looks right at home in the Biscayne next to the gauges, but the Camaro with the console gauges doesn't have the same space and I want mine seen. So, I'm looking at location ideas.

One more question, where is the box going to be installed? On the engine side of firewall or inside under the dash. The 28770 states close the coil.

Gary

Gary,
Both of mine are mounted under the glove box attached to the liner. The box weights nothing so no concerns supporting it. All wiring is under the dash except the one wire running to the coil.

Thank you...

So it's really not necessary to install in the engine compartment. I like that.

This all hinges on if I can use it with the small body HEI or if I have to use points.

On the instruction sheet, it indicates 'connect to points' ?? Also, where are you taking power from for the red wire on the three strand bundle? I like the heater power wire idea shown on the instructions, but I'm open to ideas.

Both of mine are electronic on old/vintage Mallory unilite's with original modules. And vintage Accel superstock coils.

I like the sound of that. Thank you!

The unit got here today. Isn't there supposed to be two wire connections on the back of the dial? I only have one.

Gary,
I have three of these and all of them have three wires. The box has three wires from the dial and three wires out. Red positive, Black negative, Green tach.
I attached a new dial their plastic on the back now, but same as the same original part number when cross referenced. I hope this helps.

A couple more of the potentiometer/rheostat.

Interesting. There is a difference there from the one I have. So there should be 3 wires? Curious if we are using the same unit. All my research show the dial as a two wire and the power is applied to the box itself thru the 3 wire bundle on the box.

The three from the dial go into the box and then three out positive,negative and coil.
Your correct the early points style has two wires on the dial. All mine are 644's the early electronic ones.

There is definitely a difference. The 28770 has a two wire dial, with the box having a two wire lead, red and black, and a three wire lead red, black, and green. The install instructions posted by Kurt may be a bit different then how yours installed I'm guessing. Question still is, can I use this with a Dave's Small Body HEI. I'm going to contacted Dave anyway to be sure at least about that. I don't want to ruin anything. Thank you for your insight. This may help others down the road.

Just a short note to say I finally found a decent example of the #644. Happy as a clam now. Dated 8/98. Curious if they were made later than that. I was just reading a little history about Mallory and it's a bit confusing on what banner Mallory was under when this was made.