Thread: Ignition Timing
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fredmeister fredmeister is offline
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Join Date: Oct 2002
Location: Baltimore, MD, USA
Posts: 2,235
Originally Posted by e170drvr View Post
Ok whats confusing is I see you have a 79 I have an 87 US I guess those dizzys are different. Do you have vacuum advance, or is it just mechanical? Mine is tapped from both sides of the TB. The top port will advance timing on vacuum and retard on boost pressure. Also I thought I was reading that you set your timing further advanced than the factory specs by the number of degrees of retard that you get at full boost. I have always set mine dead nuts on 26 degrees btdc 4000 rpm top hose disconnected and plugged. I personally don't have the guts to advance it more than factory spec especially with the **** gas we get around here. Did you ever get the turbo bracket mounted?
I mounted a bracket I made from steel bar stock that goes from 1 engine mounting bracket bolt to the header collector flange. Not as rigid as factory 3 point mount but better than nothing. I did not want to start cutting my factory bracket and rewelding it since I have not the tools or ability to weld. Plus once done there is no going back to OEM.....(but who would do that now?)
Also made a zork tube that I just installed...lots lighter weight off the turbo now should help.

-----With regards to factory spec didn't the euro version specify 29 degrees versus US at 26 this is my basis for runnig as high as 29?....tell me if I am wrong so that I can change it.....don't wanna do more damage.
1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"

Last edited by fredmeister; 02-13-2009 at 05:02 AM..
Old 02-13-2009, 04:59 AM
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