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napa 6 volt coil


 
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Steve Andress
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Joined: 16 Jan 2013
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PostPosted: Fri Jan 18, 2013 12:30 pm    Post subject: napa 6 volt coil Reply to specific post Reply with quote

I called napa and they said the primary resistance on the 6 volt round coil is 1.26 to 1.4(I guess SB means made in CHINA). Isnt this too little to bypass the ballast resistor? Can I run 12 volt round coil on a 6 volt system with ballast resistor bypassed or are all too high in primary resistance?
 
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JMOR
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PostPosted: Fri Jan 18, 2013 12:49 pm    Post subject: Re: napa 6 volt coil Reply to specific post Reply with quote

Steve Andress wrote:
(quoted from post at 16:30:49 01/18/13) I called napa and they said the primary resistance on the 6 volt round coil is 1.26 to 1.4(I guess SB means made in CHINA). Isnt this too little to bypass the ballast resistor? Can I run 12 volt round coil on a 6 volt system with ballast resistor bypassed or are all too high in primary resistance?
That will be fine....it is within reasonable range.

If a "true" 12v coil with no ballast req'd, then it will be >3 Ohms & if you use it on 6v, the current will be too low & no run or weak spark & perhaps cut out at high speed & poor if any cold start.
 
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souNdguy
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PostPosted: Sat Jan 19, 2013 2:07 pm    Post subject: Re: napa 6 volt coil Reply to specific post Reply with quote

keep oin mind thatt he front mount square can coils NEED the oe ballast resistor on 6v.

later N with 6v round coils DO NOT need a resistor to run on 6v.

what exactly are you trying to do.

a napa ic8 is a 6v round coil for a later sidemount N.. it needs no resistor to run 6v. an ic14sb is a 12v round sidemount.. it needs no resistor to run on 12v.
 
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