Spark plug question

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13 Jun 2012 00:21 #528700 by vondikka
Spark plug question was created by vondikka
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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13 Jun 2012 00:44 #528711 by gd4now
Replied by gd4now on topic Spark plug question
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.
1977 KZ650 B1
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13 Jun 2012 01:07 #528719 by Patton
Replied by Patton on topic Spark plug question
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:

Good Fortune! :)
1973 Z1
KZ900 LTD

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13 Jun 2012 01:09 #528720 by 650ed
Replied by 650ed on topic Spark plug question
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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13 Jun 2012 02:57 #528748 by vondikka
Replied by vondikka on topic Spark plug question
my ignition system is all stock
78 KZ650 C2
76 kz400 D3

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13 Jun 2012 03:01 #528749 by vondikka
Replied by vondikka on topic Spark plug question
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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13 Jun 2012 03:09 #528752 by MFolks
Replied by MFolks on topic Spark plug question
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.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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13 Jun 2012 04:17 #528757 by vondikka
Replied by vondikka on topic Spark plug question
guess i'll check autozone. what should i use, the B7 or B8 ?
78 KZ650 C2
76 kz400 D3

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13 Jun 2012 04:20 - 13 Jun 2012 04:21 #528759 by 650ed
Replied by 650ed on topic Spark plug question
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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13 Jun 2012 04:22 #528760 by vondikka
Replied by vondikka on topic Spark plug question
will do, thanks guys
78 KZ650 C2
76 kz400 D3

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13 Jun 2012 09:59 - 22 Jan 2013 20:00 #528790 by martin_csr
Replied by martin_csr on topic Spark plug question
.
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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13 Jun 2012 10:21 #528797 by Motor Head
Replied by Motor Head on topic Spark plug question

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.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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