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View Full Version : Lucas Dizzy with micro timing adjustment question



poolboy
02-17-2008, 10:51 AM
I'm wanting to know what makes that feature work. I know that on dizzys without this feature (like mine) that the vacuum module is pinned to the dizzy housing to keep it in one place.
With the micro or vernier adjustment, it would appear that the module slides in the housing as the adj. wheel is turned. Is that right? Is that reorienting the moving plate?
I was told by Jeff that he could add this to mine, but I didn't think to ask exactly what made it work. So I thought I'd ask here.

TR3driver
02-17-2008, 12:39 PM
With the micro or vernier adjustment, it would appear that the module slides in the housing as the adj. wheel is turned. Is that right? Is that reorienting the moving plate?Exactly right, on both counts.

Handy for roadside adjustments without a timing light or wrench, but not worth adding, IMO.

Geo Hahn
02-17-2008, 12:43 PM
I've never given a lot of thought to how it works but I think your description is about right.


https://www.cybertrails.com/~ahwahnee/points.JPG


It can be a handy feature but doesn't do much that you can't accomplish another way.

Might have been useful on the early TRs that had hand-cranks as the timing could be temporarily retarded for easier starting (and less chance of kicking back) then advanced for running.

I use it to fine-tune the timing as the scale lets me know & record exactly what adjustment has been made.

poolboy
02-17-2008, 07:53 PM
Thanks guys. I just like fiddlin; seems like just the thing.

Brosky
02-17-2008, 08:00 PM
I like tweaking the timing with it on mine.

tomshobby
02-18-2008, 09:25 AM
Like Paul I like it for making fine adjustments. An adjustment to the timing can be precisely made vs moving the dizzy and re-tightening it.

But, like Randall mentioned, the cost might be a consideration. I just looked at the receipt and it cost $80 to have it added.

My thinking was that while the dizzy was being restored it would be $80. If I decided later that I wanted it the cost would have included the shipping, extra work to take the dizzy apart, the $80, and the time while waiting while it was being done. I made the decision based on the feeling that I would have eventually wanted it anyway. I think it will be particularly useful for any dyno work.

poolboy
02-18-2008, 05:13 PM
Yeah, mdl.., that's what I was quoted. I don't think that's bad. I saw the vacuum module for sale at auction that is needed. Has the threaded rod, did not include the adj. wheel or circlip. Stared out at 40 bucks.
"One of these days".....

RonMacPherson
02-18-2008, 05:15 PM
With the seasonal changes in the "octane" ratings and increased ethanol in the gases available, might be a good thing to have to adjust on the side of the road, rather than having to break out a light.

poolboy
03-04-2008, 06:37 PM
Well it's a long way from Sandy Hook Mississippi to Shankopee Minnesota, but I brought my dizzy to a rural Post Office on Monday, Feb 25. And on Thrusday, Feb 28, it was on Jeff's bench. I picked it up today, Mar 4, at the same rural Post Office.
You guys know Jeff's work so there's no surprise there when I tell you how pleased I am. I also got the micro-adjustment feature installed.
I think the speed at which I got the dizzy back not only says a lot about Jeff, but also the Post Office. How often do you hear that?

Brosky
03-04-2008, 07:30 PM
I hear it a lot about Jeff's work, but have you been drinking that funny tasting water that they serve at the Post Office again????

fogdot
03-04-2008, 08:04 PM
Who is this Jeff?
Exactly what did he do?
How much did it cost?
Does he have a website?
Dave

poolboy
03-04-2008, 08:05 PM
:lol: :thirsty:

Brosky
03-04-2008, 08:10 PM
Please see links below:

Who he is....

https://www.advanceddistributors.com/services07.htm

What he does....very well

https://www.74tr6.com/distributor.htm

https://www.74tr6.com/distributoradjustable.htm

poolboy
03-04-2008, 08:17 PM
www.advanceddistributors.com (https://www.advanceddistributors.com) Jeff Schlemmer. He does whatever it takes to make your distributor look and work like new.
In my case it cost $79.00 plus $80.00 for the addition of the micro adjustment feature. If you can find the micro adjustment unit, it will cost you nearly that just for the part.

JeffS
03-05-2008, 07:43 AM
I REALLY like to add the micro adjust feature to the TR6 distributors - its just seems like a natural fit for the "hot rod" of British cars to have a handy timing adjustment. What I charge isn't out of line for a new replacement vacuum unit - the advance type is available through Moss for $73 (last I checked), but they don't have all the hardware available for the installation. If any of you should decide to order your own "advance" unit as they're called by Moss and make this upgrade, its as easy as drilling the hole through the casting, and I have the necessary hardware kits on hand for $15. If you add up the costs for materials, the labor is less than free because I like doing the work!

As for the kind words - Thank You!!! This is the ONLY thing I've done in my life that I'm proud enough to put my name on, even though I know you guys probably peel the stickers off anyway... :smile:

DNK
03-05-2008, 11:10 AM
This is the ONLY thing I've done in my life that I'm proud enough to put my name on, even though I know you guys probably peel the stickers off anyway... :smile:


Who US????

poolboy
03-05-2008, 01:24 PM
:winner1: Jeff Schlemmer. I just got back from a 30 mile test drive after making a small adjustment with the wheel and I've got to say that the difference that the recurve/rebuild made was Quite noticeable.
That little car pulls away so smoothly and when I get to 2400 the pull to 3200 is such a joy and so smooth....man!!. And that's an engine with 99k..

And, I didn't remove the decal.

JeffS
03-06-2008, 12:46 PM
Cool. Another car that's a little more fun to drive!!!
:smile:

poolboy
03-06-2008, 05:19 PM
Absolutly! And the more I drive it (just got back) the more I appreciate what you did, Jeff.
In fact, I have to say that this was the single most performance enhancing work that I have done or had done, including rebuilding the carbs.
Hard to believe for less than 100 dollars, you can get this kind of results.
If I had any idea rebuilding that distributor would have made that much difference I would have sent it to you within a week of bringing Ol'Basil home.

Brosky
03-06-2008, 06:01 PM
I've been telling everyone this for a long time.

Glad to see that others are getting the same great results that I did.

tomshobby
03-06-2008, 09:48 PM
Absolutly! And the more I drive it (just got back) the more I appreciate what you did, Jeff.
In fact, I have to say that this was the single most performance enhancing work that I have done or had done, including rebuilding the carbs.
Hard to believe for less than 100 dollars, you can get this kind of results.
If I had any idea rebuilding that distributor would have made that much difference I would have sent it to you within a week of bringing Ol'Basil home.

Exactly my experience!

I also appreciate Paul's remarks over the last year or more which led me to Jeff's door.