Skye,
When the 25D distributor on my '74 B turned out to be trash, I searched
high and low for a new or rebuilt replacement without any luck at all. (The
vacuum advance is not available, nor are the centrifugal advance springs.)
The current wisdom is to use the 45D as replacement. Brit-Tek sold me a 45D
with the mystical 'Eurospec' advance curve. It was a drop-in replacement.
So many things were shot on my motor before I rebuilt it, I have no
previous experience to know if the curve is better than the original or not.
For better or worse, I have the vacuum advance connected to a manifold port.
I don't have a ported vacuum source on my carbs, nor have I tried it with
the vacuum advance completely disconnected. I can say that even with the
badly worn carbs I have, the car runs adequately, although I still avoid
drag races with minivans.
Matt Kulka
Huntersville, NC
'74 B
-----Original Message-----
From: Skye Poier [mailto:skye@ffwd.com]
Sent: Sunday, April 11, 1999 5:42 AM
To: MG Nuts
Subject: Distributors
Hmm. It looks like the DPO installed the wrong distributor on my car.
It slowly dawned on me today when I tried to change the points. After
looking at a few parts catalogs I'm sure I have the 45D dizzy. What
implications does this have? The vacuum advance is wrong, for one.
Is this seriously affecting my performance? At what point was the
vac advance changed to be maximum at idle?
Maybe this is why the vacuum advance was disconnected when I got it :P
I'm sure I can find a good used 25D somewhere. I see it comes with
3 different caps; the original uses some sort of weird screw-in
ignition wires? Are the caps interchangable? Are there any good
reasons to go with the push-in cap?
Always new suprises!
Skye
--
1966 MGB The MGB Experience __,__\__ Safety Fast!
GHN3L-70307 http://www.mgb.bc.ca/ (_o____o_) MGOFR 1.375
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