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Re: 25D4 vs. 45D4

To: Charles & Peggy Robinson <ccrobins@ktc.com>
Subject: Re: 25D4 vs. 45D4
From: Todd Mullins <muses@cableone.net>
Date: Sat, 15 Jul 2006 20:43:50 -0500
Well, um, here's the other interesting part of this story:  There are  
no numbers on it anywhere.

Weird, huh?  No numbers on the body.  No numbers on the vacuum  
canister.  I took it all apart, looking for any identifying markings  
on the advance mechanism, and found none there either.

So the truth is, I really don't know what I've got, other than a  
brand-new 45D4 shipped from England...

-todd

On Jul 15, 2006, at 5:59 PM, Charles & Peggy Robinson wrote:

> Go to http://www.mgb-stuff.org.uk/curvestext.htm  and look up your  
> dizzy by serial #.  Hopefully you got one with a curve that will be  
> OK for your engine.  BTW, I use a 25D4 #40897 in my '69 B.  Still  
> using points and a Lucas Sport coil.
>
>   Cheers,
>
>    CR
>
>
> Todd Mullins wrote:
>> Hi all,
>> I've been slowly gathering parts for my '74 MGB reassembly.  My  
>> emphasis is on optimizing functionality and performance, rather  
>> than a historically correct restoration.
> SNIP
>> So I put it to you:  Is the points-equipped 45D4 superior to the  
>> points-equipped 25D4?  I know that electronic ignition levels the  
>> playing field here (and I'll probably buy a Pertronix for the  
>> 45D4), but I'm interested in your opinions of the intrinsic  
>> strengths and weaknesses of the two distributors in their original  
>> form.
>> As always, thanks for all of your informed opinions!
>> -todd




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