Signal generator swap?

[jwhelan65]

Maybe a dumb question wondering if the very expensive black igniter box will swap out from a 80 750e to 85 700es?

[salty_monk]

I looked at this before... it's a different part number. (Did you buy that 750 one on Ebay recently??). Physically the connection appears to be the same. (99.9% sure it will plug in ok).

I suspect the difference is in the advance curve although between these two engines it can't be a lot of difference I would think (although the 700 does run more aggressive cams supposedly).

I also wondered if the 82/83 1100 or 1150 box would work. The 1100 box should be much easier to get hold of. Again I suspect they would but advance curve will be different.

Looking at the Dyna 2000 instructions it has a couple of 8v & 16v advance maps as standard & seems to suggest that any of them will work on the right number of valve engine but you can tailor for best power, throttle response, economy etc.

Dan

[Guest]

One from an '83 850 is exactly the same unit.

[jwhelan65]

I looked at this before... it's a different part number. (Did you buy that 750 one on Ebay recently??). Physically the connection appears to be the same. (99.9% sure it will plug in ok).

I suspect the difference is in the advance curve although between these two engines it can't be a lot of difference I would think (although the 700 does run more aggressive cams supposedly).

I also wondered if the 82/83 1100 or 1150 box would work. The 1100 box should be much easier to get hold of. Again I suspect they would but advance curve will be different.

Looking at the Dyna 2000 instructions it has a couple of 8v & 16v advance maps as standard & seems to suggest that any of them will work on the right number of valve engine but you can tailor for best power, throttle response, economy etc.

Dan

I actually am considering parting out the 80 750 that I have and thought I would give it a try if its compatible. I have just recently experienced some electrical issues on the 700 and I have about narrowed it down to the igniter. I also have a new used set of coils to swap out as well to see if that solves anything.

Joe

[jwhelan65]

One from an '83 850 is exactly the same unit.

Yeah finding one is the problem, before I spend ridiculous money on the OEM part I will by a new dyna and be done.

[Nessism]

The 700 has the advance curve built into the ignitor but the '80 750 uses a mechanical advance unit so NO, the units are not interchangeable.

[jwhelan65]

The 700 has the advance curve built into the ignitor but the '80 750 uses a mechanical advance unit so NO, the units are not interchangeable.

Thanks Ed!

[Guest]

Get a Dyna S.
For the 85 you will need a mechanical advance to run the Dyna