The Ford Barn

usered · 12-11-2012, 07:42 PM

I'm putting an 1984 Datsun 8 plug distributor in my Model A speedster with a model B engine and a Lion 8 plug head.

Question I have is has anyone done this and what their experience was with the advance. Did you use the vaccum advance, or take it out and go with the mechnical advance. Did you put different springs in?

From what I can find out the basic advance is:

0 degress @ 650 rpm
7 degress @ 1345 rpm
10 degress @2100rpm

The vaccum advance adds an extra 10 degress @ 10" of vaccum.

A stock Model A needs about 20 degress, my motor with the modifications, CAM, head, valves etc. would probably need more.

Anyone got any information on this?

Thanks

Ed

12-11-2012, 07:42 PM	#1
usered Senior Member Join Date: Jan 2012 Location: South Carolina Posts: 240	Datsun 8 plug distributor I'm putting an 1984 Datsun 8 plug distributor in my Model A speedster with a model B engine and a Lion 8 plug head. Question I have is has anyone done this and what their experience was with the advance. Did you use the vaccum advance, or take it out and go with the mechnical advance. Did you put different springs in? From what I can find out the basic advance is: 0 degress @ 650 rpm 7 degress @ 1345 rpm 10 degress @2100rpm The vaccum advance adds an extra 10 degress @ 10" of vaccum. A stock Model A needs about 20 degress, my motor with the modifications, CAM, head, valves etc. would probably need more. Anyone got any information on this? Thanks Ed