Spark plug question

  • vondikka
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Spark plug question

13 Jun 2012 00:21
#528700
Would it be ok to use resistor type plugs in a 78 kz650c2
78 KZ650 C2
76 kz400 D3

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  • gd4now
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Re: Spark plug question

13 Jun 2012 00:44
#528711
Yes it would be ok - but if the spark plug end caps are resistor type caps then I would suggest that you not do so as this would increase the total resistance and would increase the load on the coils.
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  • Patton
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Re: Spark plug question

13 Jun 2012 01:07
#528719
Resistor type spark plugs (plugs having an "R" in their number, such as NGKBR8ES) may be installed, provided that non-resistor caps and non-suppressor (metal core) plug wires are used.

Using more than one resistance component (wire; cap; plug) affords too much resistance.


Why? Were the plugs free or something? :lol:

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  • 650ed
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Re: Spark plug question

13 Jun 2012 01:09
#528720
I wouldn't do it. I would (and do) simply use the correct plugs as called for in the Kawasaki Service Manual. That would be the ND W22ES-U or the NGK B7ES. Why bother using something that is not recommended when there's nothing to gain by doing so? :unsure:
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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  • vondikka
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Re: Spark plug question

13 Jun 2012 02:57
#528748
my ignition system is all stock
78 KZ650 C2
76 kz400 D3

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  • vondikka
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Re: Spark plug question

13 Jun 2012 03:01
#528749
i wanted to get your opinions. the guy at napa said they would be fine. they are the closest plugs they have in stock right now
78 KZ650 C2
76 kz400 D3

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  • MFolks
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Re: Spark plug question

13 Jun 2012 03:09
#528752
The guy at Napa probably believes your bike has rubber sparkplug caps(with no resistors). It's a bad choice to use both resistor sparkplug caps(what came with your bike) and resistor sparkplugs.

In the Kawasaki supplied caps, there's a 5000 ohm resistor, so if it were me, I'd not add any more resistance in the ignition coil secondary loop.
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  • vondikka
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Re: Spark plug question

13 Jun 2012 04:17
#528757
guess i'll check autozone. what should i use, the B7 or B8 ?
78 KZ650 C2
76 kz400 D3

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  • 650ed
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Re: Spark plug question

13 Jun 2012 04:20 - 13 Jun 2012 04:21
#528759
As stated above - use ND W22ES-U or NGK B7ES.
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Last edit: 13 Jun 2012 04:21 by 650ed.

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  • vondikka
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Re: Spark plug question

13 Jun 2012 04:22
#528760
will do, thanks guys
78 KZ650 C2
76 kz400 D3

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  • martin_csr
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Re: Spark plug question

13 Jun 2012 09:59 - 22 Jan 2013 20:00
#528790
.
1981 KZ650 Competition Sports and Road
Last edit: 22 Jan 2013 20:00 by martin_csr.

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  • Motor Head
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Re: Spark plug question

13 Jun 2012 10:21
#528797
vondikka wrote: i wanted to get your opinions. the guy at napa said they would be fine. they are the closest plugs they have in stock right now

Don't trust the guy at NAPA. Use the non resistor plugs, since your ignition is all stock. The resistor plug will Lower your spark voltage, not a good thing. :sick:
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
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