Anthony Posted October 27, 2023 Share Posted October 27, 2023 I've recently purchased a 123ignition distributor for my GT6. I have the Tune+ item, which offers customisable timing. My 2.6 engine is very far from standard, and has yet to be run. How would I go about deciding what timing I should use as a baseline for my engine before I take it to the rolling-road to be set-up optimally? Thanks. Quote Link to comment Share on other sites More sharing options...
iani Posted October 28, 2023 Share Posted October 28, 2023 21 hours ago, Anthony said: I've recently purchased a 123ignition distributor for my GT6. I have the Tune+ item, which offers customisable timing. My 2.6 engine is very far from standard, and has yet to be run. How would I go about deciding what timing I should use as a baseline for my engine before I take it to the rolling-road to be set-up optimally? Thanks. Start off with the book timings, then adjust until best idle Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 28, 2023 Author Share Posted October 28, 2023 Thanks. Is that still a good starting point for a high compression engine with a race cam? Just want to make sure I don't do anything that's going to cause any damage. Quote Link to comment Share on other sites More sharing options...
Clive Posted October 29, 2023 Share Posted October 29, 2023 The std timing curve for a GT6 should will be safe. You may need a little more advance at low revs. Maybe 12-14 degrees, I have found that, even with a std cam. But keep the max mechanical advance to total 32 degrees. And I wouldn't worry too much about vac advance if running the car up to a tuner, if he worth his salt he will set that up to give max torque under light load once he has done the usual WOT stuff. Quote Link to comment Share on other sites More sharing options...
iani Posted October 29, 2023 Share Posted October 29, 2023 18 hours ago, Anthony said: Thanks. Is that still a good starting point for a high compression engine with a race cam? Just want to make sure I don't do anything that's going to cause any damage. What cam are you using Anthony? I have a 300 cam in my car and the book settings were fine to get it started. Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 29, 2023 Author Share Posted October 29, 2023 I'm guessing you're using either a PH3, or a TH7-6 cam? My cam has a little more duration than they have, but not too much more. Quote Link to comment Share on other sites More sharing options...
iani Posted October 29, 2023 Share Posted October 29, 2023 54 minutes ago, Anthony said: I'm guessing you're using either a PH3, or a TH7-6 cam? My cam has a little more duration than they have, but not too much more. No, I have Tony Lindsey-Dean's R3 cam, I did have the PH3 fitted previously, I'd say they are comparable. Quote Link to comment Share on other sites More sharing options...
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