Nels -
You do mean BTDC rather than ATDC don't you? Is this a stock '79 B engine?
In some modified applications, friends have gotten their 45D4s to work much
better with no vacuum advance at all.
If you haven't sent that 25D4 off yet...
>From: Nferre@aol.com
>
>I have a wierd timing problem with my 79 MGB. I just installed a Lucas 45D
>distributor with an Ignitor ignition.
>
>I initially set the timing to 15 degrees ATDC with the vacuum advance
>plugged. Then I reattached the vacuum advance. She was sluggish, pinged and
>ran rather warm. When I got back home, I checked the timing and it was off
>the scale. Way too advanced.
>
>I tried a few other settings, and am currently now at 15 degrees ATDC with
>the vacuum advance hooked up. She won't run without it hooked up. Also,
>when the vacuum advance is attached....the timing retards under acceleration.
>
>Nels Ferre
>79 MGB
******************************************
Allen H. Bachelder =iii=<
Sinking Creek Home for Wayward MGs
New Castle, VA 24127
USA
540/544-7333
******************************************
|