Mercruiser Thunderbolt Ignition Question??
 

Anyone know if what type of timing advance is used on a Thunderbolt ignition distributor? Is it mechanical or vacuum?

I notice the rotor has what looks like a sensor wheel attached that passes through a sensor. Is there an external module that controls the advance?

Thanks

Do a search in this area for "Thunderbolt module"...that should get ya steered in the right direction sir.

I'm no expert on these...but I think the advance is built into the module. There are a few different ones. I know they are not vacuum.

Thats the module and the V6 module out of an outboard is the one to have with a 24 degree built in advance if my memory serves correct....

I know they used that module up through the late 90's I ran it on my 97 Baja with a built 502. The last two numbers are the number of degrees of advance the module will give you. most v8's ran 22 or 24 degrees of advance. We always ran a v6 module out of the 4.3 lx motors which had 14 degrees of advance this allowed me to run more base timing without having to much total advance. I could run 16 degrees base timing and still have only 30 degrees total. had no starting problems and gave the motor alot more bottom end. With the v8 module I could only run 8 degrees of base timing and not go over 30 total. I sprayed a 150 nitrous shot on it when someone wanted to race I could drop the timing 6 degrees and still have some bottom end. Hope this helps.

I was also using the V6 module on my 502's until I switched to a MSD system

If anyone is interested I have the distributors and the V6 modules...

parts
 

i doubt it as this was 2011 but do you still have the v6 module and is it a 6 pin?