Hi Listers,
This fellow Bob, at lucasdistributors@yahoo.com,
restores Lucas distributors, and sent some
interesting info (below)..
Seems like a good guy to know if you need your
TR distributor rebuilt to original specs.
Regards,
Carl
'63 TR4 since '74
----------------------------
Hi Carl,
Regarding the 40735/40795, they both have the same
advance curves. The only difference is that the 795
was also used on the Morgan.
This is very similar to the 41385 and 41558 used on the TR6.
The 558 has the same advance curve and was used from 73 on
but is not listed in any of the workshop manuals.
Regarding bushing stock, much of what Lucas used was a
steel based Oil-lite type composite. It is really no
better than a bronze based Oil-Lite composite. I use
both and have seen no difference in wear rates. It is
critical however to continuously lubricate the
bushing. The 40795 does have an oil feed hole.
Usually, when I rebuild a 40795, I replace the single
bushing with 2 (upper and lower). This provides an oil
well around the shaft and actually helps lubricate the
upper bushing.
I would be happy to contribute to the distributor
dialog on the TRList and will answer any questions that I can.
One thought to keep in mind is that no two Lucas
distributors operate alike. I find that the
performance curve often needs to be tweaked to the
particular engine. The OEM performance curve is
usually the starting point if you really want smooth
performance. I have three well calibrated distributor
testers/scopes that I use and love to keep these cars
(Particularly Triumphs including mine) on the road.
Hope to talk with you soon.
Best regards,
Bob
----------------------
Hello Carl,
I'm in the Cincinnati, Ohio area. I generally
charge $25 for a complete performance and vacuum
advance curve. I plot out all of the data so that you
have complete documentation. Since you replaced the
springs which should be a matched set, you don't have
to worry about a primary and secondary performance
curve. So assuming you have the correct springs,
you're probably OK. The one thing to watch out for on
a 40795 however, is wear on the lobe shaft stop and
spring stud. Because the 40795 uses rather light
springs, every time you hit the accelerator, the stop
hits the stud with a bang. I usually see 1 to 2
degrees of unwanted extra advance due to wear. If you
would like, you could mail your unit to me. I can turn
it around in an evening.
Also, I assume that you replaced your bushings with
Oilight stock. They should be impregnated with 30
weight oil (~160F for at least 2 hours) before
installation.
Best regards,
Bob
lucasdistributors@yahoo.com
|