Timing Thunderbolt IV systems

[rmoore]

I think my 4.3 liter is lacking performance because the ignition is not advancing the timing. I'm not for sure how the Thunderbolt systems work. This system has a module connected to the back of the distributor and a pick up module inside of the distributor. If you have any information on this system, I would appreciate your help.<br />Thanks

 

[corm]

Re: Timing Thunderbolt IV systems

Hi,<br />Hook a timing light up to no 1 cyl. Stat the motor with a water muff on it. Rev up the motor some, not over 2000 rpm while watching the timeing marks to see if the timing advances. Post back and let us know.<br />corm

 

[rmoore]

Re: Timing Thunderbolt IV systems

Corm<br />Thanks for the reply. I will hook up the water muffs and try to see if the timing advances when i hook my timing light. If the the timing does not advance or advances very little what should I look For.<br />I will try this as soon as I get back from Holland on business for two weeks.<br />Thank you again for the reponse.

 

[corm]

Re: Timing Thunderbolt IV systems

The timming should have a 14 deg advance from<br />the idle setting which I think is 8 deg. At 2000rpm the timing should be maxed out.<br />corm