My 86 turbo gl-10 starts when cooled off (2hrs in 80 degrees) If I shut it off it off and try to start instantly it won't start. I had someone crank it over with timing light and appears normal firing. What would be sensitive to heat that needs to be ambient temp?. I am going to change timing by a tooth as I cannot get it on the marks.

Turbo's have a large number (20+ degrees) so is that possibly my problem?

all 1986 turbo models are 25btdc. Did you check your coolant temp sensor? or your air intake temp sensor?