Post by enigmas on Jul 25, 2009 4:04:05 GMT
These files and comments may be helpful when checking Engine Ignition Systems (Text: Courtesy of Top Gun Leads)
Testing Ignition Leads
To check the resistance of a standard suppression cable using a multimeter, set the multimeter to the 20 K ohm (= 20,000 §Ù) range and measure the resistance of the cable, i.e., terminal to terminal.
The results will be displayed in K ohms, which means that the actual resistance of the cable is the figure displayed multiplied by 1,000.
(NB. False readings can come from a flat multimeter battery, and also from dirty multimeter probes).
Useful PDF link below:
www.topgunleads.com.au/tech2.pdf
Technical Information ~ Top Gun Leads
Standard Top Gun suppression leads are designed to have a lineal resistance of approximately 10 K ohms per metre length. This means that longer leads will have a higher resistance than shorter leads.
The maximum resistance should not exceed 16 K ohms per metre.
The minimum resistance is of little concern, but as a rule of thumb they should be higher than 7 K ohms per metre for suppression leads.
Too low a resistance can cause radio frequency interference (RFI). The resistance in the lead is designed to suppress RFI.
Most original equipment leads are manufactured to the generally recognised 16 K ohms per metre standard. This is the meaning of the R16 often stamped on the lead.
Leads for V6 Commodores vary on this, with a lower resistance of approximately 10 k ohm per metre specified. Top Gun boxed sets for these vehicles are designed to meet this specification. Leads for many European vehicles use a different method to achieve RFI suppression. They also have a lower resistance, which Top Gun boxed sets for these vehicles are specifically designed for.
Note:
Top Gun recommends spiral wire Heavy Duty leads for all LPG engines.
Spiral wire cable has a resistance of approximately 2-3 K ohms per metre length.
Testing Ignition Leads
To check the resistance of a standard suppression cable using a multimeter, set the multimeter to the 20 K ohm (= 20,000 §Ù) range and measure the resistance of the cable, i.e., terminal to terminal.
The results will be displayed in K ohms, which means that the actual resistance of the cable is the figure displayed multiplied by 1,000.
(NB. False readings can come from a flat multimeter battery, and also from dirty multimeter probes).
Useful PDF link below:
www.topgunleads.com.au/tech2.pdf
Technical Information ~ Top Gun Leads
Standard Top Gun suppression leads are designed to have a lineal resistance of approximately 10 K ohms per metre length. This means that longer leads will have a higher resistance than shorter leads.
The maximum resistance should not exceed 16 K ohms per metre.
The minimum resistance is of little concern, but as a rule of thumb they should be higher than 7 K ohms per metre for suppression leads.
Too low a resistance can cause radio frequency interference (RFI). The resistance in the lead is designed to suppress RFI.
Most original equipment leads are manufactured to the generally recognised 16 K ohms per metre standard. This is the meaning of the R16 often stamped on the lead.
Leads for V6 Commodores vary on this, with a lower resistance of approximately 10 k ohm per metre specified. Top Gun boxed sets for these vehicles are designed to meet this specification. Leads for many European vehicles use a different method to achieve RFI suppression. They also have a lower resistance, which Top Gun boxed sets for these vehicles are specifically designed for.
Note:
Top Gun recommends spiral wire Heavy Duty leads for all LPG engines.
Spiral wire cable has a resistance of approximately 2-3 K ohms per metre length.
