I highly suspect then that the installation of those three units was
improper. I guess to be sure, you would have to inquire to the manufacturer
and see what their failure rate is.
Joe
-----Original Message-----
From: triumphs-bounces@autox.team.net
[mailto:triumphs-bounces@autox.team.net] On Behalf Of Anthony Rhodes
Sent: Saturday, September 19, 2009 1:58 PM
To: triumphs@autox.team.net
Subject: Re: [TR] Triumphs Digest, Vol 3, Issue 441
Joe,
I have to differ with you. I have seen 3 of Pertronics fail. They failed
oddly. They did not die totally, they could not sustain higher RPM, so
there would be a misfire at 3K rpm , for example, but it seemed to idle OK.
That being said, I have one in my car, but I installed it when I was trying
to eliminate a very small miss. I found that the MGB push-in style cap and
corresponding wires made the most difference. I had already switched to the
pertronics, which had not made much of a difference compared to a well tuned
points system. Since I had already switched to the pertronics, I was not
going to spend the time to switch back to points. I left it there, but I am
prepared to install points at a moment's notice.
This thread got me interested in tracking down a "new" subtle stumble on
acceleration from idle on my TR4A. I thought it might be a problem with
excessively lean idle settings on the carbs, so I richened them. That
helped a little, but the stumble was still there. I then moved to thicker
dashpot oil. I had been using 10-40 (as I recall). I put in "SU Dashpot
Oil" (tm) and that was THINNER than what I had in there already. I then put
in straight 30wt oil, and that was ever so slightly thinner, so I put in
20-50 oil. That was slightly thicker (as expected). Unfortunately, the
stumble was still there!
I then checked the jet heights and they were very different! One was 3mm,
and the other was just over 2mm below the bridge. I equalized them and then
had to enrich both by 6 flats, and it was running smoooooth! I could
probably go back to a lighter dashpot oil now, but it seems fine with 20-50.
-Tony
----- Original Message -----
> Message: 1
> Date: Sat, 19 Sep 2009 09:07:33 -0700
> From: "Joe Curry" <spitlist@cox.net>
> Subject: Re: [TR] TR4A Sputtering - Partially Solved
> To: "'Ed Woods'" <fogbro1@comcast.net>, <triumphs@autox.team.net>
> Message-ID: <4E356DA19BD54E9C92686A16925ADEB8@joepentiumnew>
> Content-Type: text/plain; charset="us-ascii"
>
> I have never had one fail. They are solid state devices and much less
> prone
> to failure than points and condenser.
>
> JOe
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