----- Original Message -----
From: "Anthony Rhodes" <spamiam@comcast.net>
To: <triumphs@autox.team.net>
Sent: Saturday, September 19, 2009 4:57 PM
Subject: Re: 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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