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Registered User
Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
I guess bumping the ignition is not as sexy.

Just like the WUR one should be able to make improvements to the stock ignitions and it should not be much different on the cost side from doing so.

For example, there is a stop that can be modified on the boost retard pot to extend boost retard. With that and a little more on boost advance we can probably get to 30 deg advance at cruse.

Better yet we might be able to source a different pot that can retard with boost and advance with vac. (I think one of the pots on some of the SC's do this.) There used to be an aftermarket one. If so we could get an even better on cruse advance and still be at about 18 to 20 deg advance on boost.

A lot of owners like to run MSD ignitions on 930's for good reasion. If so, there are options there to with boost retard or even fully programmable systems. Again about the cost of a WUR rebuild or adjustable WUR.

Porsche basically went after the same timing values with the C2 Turbos using a little add on electronics.

Why should the EFI guys have all the fun.

Old 09-18-2010, 11:11 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
Join Date: Dec 2008
Location: San Antonio, Texas
Posts: 3,126
There is no car as variable in fuel consumption as a Turbo. I've gotten as high as 23mpg (at a constant 90MPH)and as low as 10mpg (at a constant 150 MPH). Although there are probably worse. I was crusing at 120 and had a Cayenne Turbo blow by me at what must have been 150. I wonder if he even got to 8 MPG? That a big brick to shove down the road!
1973 911S (since new) RS MFI specs
1991 C2 Turbo
Old 09-19-2010, 08:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)
bcoats's Avatar
Join Date: Feb 2005
Location: Seattle, WA
Posts: 463
12-14 mpg with adjustable WUR. . .includes both city/highway miles with boost thrown in of course. . .

1979 911 RS clone hotrod
1983 930 turbo-sold, will be missed
1992 964 C2 Coupe-regrettably sold
1980 911 SC Weissach-regrettably sold
1975 911S-sold but not forgotten
Old 09-19-2010, 06:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)

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