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Topic: ignition wire resistance specs

in Forum: C3 Electrical


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ignition wire resistance specs (1/3)
 9/4/11 1:59am
daveo76
Former Member

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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

So what's a "good" resistance spec for HEI ignition wires?  I replaced mine several years before the rebuild I'm doing now with a good set.  There are not many miles on this set - less than 2K.  They were a bit oily, but they cleaned up nice with gentle degreaser and the jackets and boots are in physically good shape.  I measured the resistance of all and calculated resistance per length.  Very consistent at about 42-44 ohms/inch for all wires.  (500-525 ohms/ft).  Seems low compared to some of the specs I've seen on the internet (good) but the specs I could actually find on the internet were all over the place and none specific to HEI systems (bad).  I think I'm going to keep 'em since they're a good set and they're direct fit for my car (routed underneath with original shielding).  Thoughts?

Thanks, Dave


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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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Re: ignition wire resistance specs (2/3)
 9/4/11 11:59am
rraider1
Former Member

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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion


Joined: 10/14/2003
Posts: 1165

I think what helps you know they are ok they all read the same, it would be obvious if one was bad the resitance would be way off. my 2 cents. but I am brokeWink I belive the resistance will be different between the 7mm wires and 8mm

|UPDATED|9/4/2011 8:59:14 AM (AZT)|/UPDATED|
Re: ignition wire resistance specs (3/3)
 9/4/11 3:25pm
daveo76
Former Member

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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

Thanks, Bob.  I agree - consistency is good in this case.  They are 8 mm wires, FYI.  

______________

 

1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
Our Sponsors help support C3VR