Can anyone give some references to documentation on the effects of timing changes for rotaries?

Solid data in relation to turbo charged applications is a plus.

Heresey is of no use to me.

 

What type of engine are you talking about..FD or FC turbo.
Generally as a rule 18 degrees total ignition timing up to 15 psi with 95 octane fuel is O.K if you have good air temps and good mixtures. 18 degrees total versus 12 degrees total under boost is generally worth 8 rw KW or 16 engine HP on a standard FC turbo.

 

Is this with firing the leading and trailing plugs together (no split)?

 

There are several FSAE papers out on this subject.&nbsp I dunno where to get them, but the FSAE website might be a start.

We have the Cosmo internal manual from Mazda.&nbsp It has the stock ignition maps in it.&nbsp NO, I'm not giving these away.



-Ted

 

May not be what you're looking for, but check out the 3rd Gen Archives. There's a post with a title along the lines of "Help me learn to tune" that has some hard numbers on timing.