Author Topic: WS5E v/s WS5F Bosch  (Read 166 times)

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Offline Cut4fun .

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WS5E v/s WS5F Bosch
« on: May 10, 2017, 08:37:26 pm »
Can someone explain the differences in these 2 plugs?

I used to run the WS5E in the racesaws. But the WS5F is so much easier to find anywhere it seems.
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Offline mdavlee .

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Re: WS5E v/s WS5F Bosch
« Reply #1 on: May 11, 2017, 01:15:06 am »
I don't remember the difference in E and F on Bosch


Offline mdavlee .

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Re: WS5E v/s WS5F Bosch
« Reply #3 on: May 11, 2017, 01:22:02 am »
Here is a screen shot off that chart.

Offline Cut4fun .

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Re: WS5E v/s WS5F Bosch
« Reply #4 on: May 11, 2017, 12:33:25 pm »
Interesting stuff. Thanks for finding and sharing Mike.

I'll just keep getting the E after that.
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Offline mdavlee .

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Re: WS5E v/s WS5F Bosch
« Reply #5 on: May 11, 2017, 04:59:32 pm »
No problem. Chart showed a lot of differences in their line up

Offline sharkey

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Re: WS5E v/s WS5F Bosch
« Reply #6 on: May 19, 2017, 04:18:36 am »
So, E is standard reach whereas F is extended reach?  Kinda like a Champion CJ-6 vs CJ-6Y?  Also looks like there is a dab of Iridium on the F electrode.

I wonder about those rounded corners on the Iridium ignitors.  Way back in Lawn Boy ignition school, we were taught that a spark plug with a (worn out) rounded ignitor took twice the voltage to fire over the sharp corner of a new plug ignitor.

 

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