Thunderbolt IV ignition module
#3
Platinum Member
Platinum Member
should work fine just have to retime your motor V8-22 has 22 degrees of advance and the V8-20 has only 20 degrees of advance so your base timing is different.
#5
Registered
V8-22 Module has 22 Total Advance all in by 4500rpm.
V8-20R Module has 20 Total Advance all in by 5250 RPM.
Therefore, I would not recommend the V8-20R module. It's got a super slow azz curve.
This is according to my notes. Which I'm sharing to you for free. Thus, if I'm wrong, I owe you nothing. LOL.
V8-20R Module has 20 Total Advance all in by 5250 RPM.
Therefore, I would not recommend the V8-20R module. It's got a super slow azz curve.
This is according to my notes. Which I'm sharing to you for free. Thus, if I'm wrong, I owe you nothing. LOL.
#8
Registered
Last handful of pages on this Merc bulletin shows a lot of Merc's most used modules' curves/specs:
http://www.boatfix.com/merc/Techbk/95/95HGB4.PDF
http://www.boatfix.com/merc/Techbk/95/95HGB4.PDF
#9
Registered