[TR] Name that distributor (TR3)

Wbeech@flash.net wbeech at flash.net
Wed Oct 17 11:19:01 MDT 2018

Explain all that to Moss, they have mis-informed me a couple times in the past and they refunded my return shipping. 
Bill B

Sent from my Handspring Treo

On Oct 16, 2018, at 5:54 PM, Art McEwen <amcewen2 at cogeco.ca> wrote:

Well Moss has a lt lead that will work with that plate but when I go to switch the 1 month old points/condenser from the old plate to the new one I find the new one doesn't have a pivot post for the points assembly  grr.

So now I have to pay shipping for new points ('cause they didn't tell me that when they explained the plate difference).


> On 10/15/18, "Art McEwen" <amcewen2 at cogeco.ca> wrote:
> Thanks Randall,
> Yes they sent me LU422318 according to the packaging.   It appears from britishvacuumunit.com that that part along with LU54413549 (moss 153-640) might work, although it's not clear from any of the photos if that terminal connector is meant to fit *over* the fork of LU421078 or *instead* of the fork. 
> To further complicate things the internal contacts on my "up style" distributor cap are pretty crappy and I have a brand new sideways style unit I picked up somewhere, but that means new leads.  sigh....
> Art
>> On 10/15/18, Randall <tr3driver at ca.rr.com> wrote:
>> 40480D is an earlier model DM2P4 distributor.  The information I have handy
>> says 40480F (which is functionally the same and still DM2P4, the letter is
>> just a revision level) was used as late as 1959 TR3, some of which were sold
>> in 1960.
>> That same database says cars built in 1960 got 40698A/B, which is still a
>> DM2P4.
>> The Moss catalog is certainly misleading, as they show a drawing of the
>> plate for a DM2P4, but the listing says it is for a 25D4.  They have no
>> listing for the earlier part (which I assume means it is not available).  I
>> believe the equivalent part number at TRF would be LU421078, which they have
>> listed as NLA.  You might check with Revington, he seems to source a lot of
>> parts the others can't find.
>> Faced with that same dilemma some years ago, I fabricated a mount for the
>> low tension lead that worked quite well.  Just a stack of pieces of bare
>> fiberglass printed circuit board (from the scrap bin, no copper plating),
>> carved with a Dremel to fit snug but not too tight in the slot in the
>> distributor cap.  A small bolt through the center linked the two wires.
>> IIRC I used 3 pieces of PC board, one smaller to fit inside the notch and
>> two slightly larger to fit on either side of the notch.  A little extra work
>> to install the cap, as I had to hold the side wire to position the new piece
>> in the slot, as I lowered the cap into place, but not too bad.
>> Later, I switched to a (used) 25D4 distributor.
>> -- Randall  
>> > -----Original Message-----
>> > From: Triumphs [mailto:triumphs-bounces at autox.team.net] On 
>> > Behalf Of Art McEwen
>> > Sent: Sunday, October 14, 2018 7:19 PM
>> > To: triumphs at autox.team.net
>> > Subject: [TR] Name that distributor (TR3)
>> > 
>> >  Hi  
>> > 
>> > 
>> > The backing plate on my TR3's distributor has a lot of play 
>> > in it so timing is problematic.  I ordered a new one from 
>> > Moss however that part (551-055) doesn't have the same tall 
>> > attachment for the low tension lead leading outside the cap 
>> > (see old unit on the left): 
>> > https://www.dropbox.com/s/wzxo5gpd3tnuaei/IMG_20181014_1038057
>> > 63.jpg?dl=0
>> > 
>> > 
>> > The distributor is stamped 40480D (see below) which doesn't 
>> > seem to be within the range of their 25D model matching (if I 
>> > go down the electronic replacement match-up rabbit hole). 
>> > https://www.dropbox.com/s/s1ghm1wradmp3xw/IMG_20181014_1047562
>> > 91.jpg?dl=0
>> > 
>> > Do I have a non-standard distributor?  Any idea the right 
>> > part # for my backing plate?   Or should I just bite the 
>> > bullet and go electronic?
>> > 
>> > Thanks,
>> > 
>> > Art 
>> > 1960 TR3A  TS64989LO 
>> > 

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