My understanding is that there is no longer any dwell adjustment after the
Pertronix is installed. Timing is the only thing you have to worry about,
and once set it shouldn't change. I've been using the Pertronix in both my
TD and MGB for many years now. The only problem I've had is, I didn't leave
enough slack in the Pertronix wires inside the B's distributor. The leads
rubbed against the rotor and wore through. (I was able to fix this by
splicing.) This could also happen by pulling on the wires coming from the
distributor.
Bob Donahue (Still Stuck in the '50s)
Email - bobmgtd@comcast.net
Cars: 52 MGTD - #17639
71 MGB - #GHN5UB254361
Member: NEMGTR #11470
NAMGBR # 7-3336
Hoosier MGB Club
Olde Octagons of Indiana
----- Original Message -----
From: "W. David Houser" <mgs4dave@tampabay.rr.com>
To: "MG List" <mgs@autox.team.net>
Sent: Saturday, July 05, 2008 12:20 PM
Subject: [Mgs] Pertronix and overheating in MGA
> Listers,
> The engine was way too far advanced
> Many thanks for the responses. The results of the timing check are as
> follows: The previous setting was 20 degrees BTDC at low idle and with
> vacuum off and plugged. The new reading after Pertronix was 30
> degrees, and performed the same way. The dwell was also a surprise.
> The dwell meter had been bench calibrated. The Pertronix dwell was
> only 40 degrees, versus the desired 60. Pertronix has not yet responded.
> Dave Houser
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