TR6 ignition and plug gap??

[turbov6joe]

What’s the most plug gap you’ve been able to effectively run with the TR6 ignition, and at what peak boost psi were you at? I need to change plugs and am going back to the CR42TS. I want to run as much gap as I can at 25 psi without spark blow out and am looking for your opinions regarding this. TIA, Joe

 

[gunzandgearz]

What’s the most plug gap you’ve been able to effectively run with the TR6 ignition, and at what peak boost psi were you at? I need to change plugs and am going back to the CR42TS. I want to run as much gap as I can at 25 psi without spark blow out and am looking for your opinions regarding this. TIA, Joe

That is kind of a loaded question as every engine is different as well as cylinder pressures because boost is just a number 1 engine running at 20 lb of boost will have very different cylinder pressures than another engine running at 20 lb of boost best thing you can do is start with a decent Gap keep increasing it until it starts crapping out and then go backwards a little basically the same thing as playing with timing and fuel curves

 

[TurboBob]

I would start with them at .030, presuming your alternator is putting out appropriately..

Bob

 

[sdteb]

what would be the best plugs to use? with alky and pump? UR5?

 

[hensleyt]

what would be the best plugs to use? with alky and pump? UR5?

That plug was to cold for me but every car is different. Most preferred plug on the form.
I run .032 with Autolite 25 27 lb boost.