Coil and Plug Leads update
17/09/09 12:45
Post Silverstone Race, we fitted MSD Blaster SS coil and Magnecore's fantastic RV8 Plug Leads. Be careful how you order the leads. Distributor Cap type must specified - in this case 90 degree ends on the 1600 Marelli/Intermotor cap.
Another issue was melting of the resistor in the rotor cap due to High Temp/High Voltage of MSD6AL system. Problem solved with copper soldered insert.
Another issue was melting of the resistor in the rotor cap due to High Temp/High Voltage of MSD6AL system. Problem solved with copper soldered insert.Misfire 01/08/2009
17/09/09 12:34
Bit of a misfire pre-race at Silverstone 1 Aug 2009. Sparks seen from No 4 Distributor Terminal to Inlet manifold - small crack found on dizzy so it was replaced.
Running MSD6AL Capacitive Discharge through standard Distributor / Points. (Red wire to coil positive, white to distributor, green to coil negative).
53 to 63 cm Superstock Copper Core 7mm Hi Temp spark plug leads show <1 Ohm resistance.
50cm long Lucas Silicone Coil lead is 15,000 Ohm.
Timing set as per Fulvia 1600 advance curve.
Coil is 6800 Ohm and has previous damage from earlier coil lead that was too short.
Plugs:
NGK Racing: V power model 4554 R5671 A8 used post rebuild and road use whilst running in. For running in, the Weber 45 carbs had 32mm chokes, 130mains, 200 Air, 55F8 idles and F9 emulsions.
NGK Competition B95EGV plugs used for the CSCC 40 min race. For race Weber 45s fitted with 36mm chokes, 130 mains, 135 Air, and 35 Pump Jets. Looking into F16 emulsions and better Main/Air set up before Cadwell Race 6 September.
Looks like Nos 3 & 4 running lean and 1 & 2 rich.
Misfire occured around 5500 rpm witn 7000RPM MSD rev limiter in place. Removed limiter and changed plugs to B95EGV - misfire abated and revved freely to 7000.
For photos click image below:
Running MSD6AL Capacitive Discharge through standard Distributor / Points. (Red wire to coil positive, white to distributor, green to coil negative).
53 to 63 cm Superstock Copper Core 7mm Hi Temp spark plug leads show <1 Ohm resistance.
50cm long Lucas Silicone Coil lead is 15,000 Ohm.
Timing set as per Fulvia 1600 advance curve.
Coil is 6800 Ohm and has previous damage from earlier coil lead that was too short.
Plugs:
NGK Racing: V power model 4554 R5671 A8 used post rebuild and road use whilst running in. For running in, the Weber 45 carbs had 32mm chokes, 130mains, 200 Air, 55F8 idles and F9 emulsions.
NGK Competition B95EGV plugs used for the CSCC 40 min race. For race Weber 45s fitted with 36mm chokes, 130 mains, 135 Air, and 35 Pump Jets. Looking into F16 emulsions and better Main/Air set up before Cadwell Race 6 September.
Looks like Nos 3 & 4 running lean and 1 & 2 rich.
Misfire occured around 5500 rpm witn 7000RPM MSD rev limiter in place. Removed limiter and changed plugs to B95EGV - misfire abated and revved freely to 7000.
For photos click image below: