Dave at OGTS has tried to engage me in conversations about dizzy timing curves and he's been working diligently to try to come up with a way to test and set up the proper timing curve for these engines. Apparently, a lot of our old school lessons learned on timing our 1.9/2.0 engines have to go out the window. He says that the weak 2.4 pistons are highly susceptible to burning up if timing is too far advanced. Apparently member Crilwa recently had a meltdown in his engine due to a mechanic advancing his timing too much.
This stuff is out of the realm of things that I have any interest or skill in, so I'm going to throw this concern out here for open discussion.
I just had a recent talk with Dave about my 2.4 engine and it's timing situation. He says that, generally speaking, do not go past 10* of advance at idle. Then he had some confusion as to what I was refering to when I said that my advance was limited to about 20* in my dizzy. I was refering to the mechanical advance limit that RallyBob limited my dizzy to when he modified it for my 2.0. I'm pretty sure that Bob said he limited it to 20*, I could very well be wrong. I believe Dave said that I could use more than that. Don't take anything I have just said as gospel, this is all just my vague recollection of topics discussed.
But, here is what I think is Dave's main concern: Excessive combustion temperature and this condition causing the self-destruction of 2.4 pistons.
Is there a way to tell if I'm burning too hot or too cold?
How would one attempt to determine combustion temperature?
Your thoughts on these subjects and other related ones greatly appreciated!