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What spark plug do u use?
Discussion at Motorized Bicycle Engine Kit Forum in the High Performance Bicycle Engine Tips forum. Just wondering what spark plug everyone is using, before I go out and buy every model in the NGK series.
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06-12-2009, 12:57 AM
|  | Motorized Bicycle Elite Member | | Join Date: May 2009 Location: NEWCASTLE
Posts: 127
| |  What spark plug do u use?
Just wondering what spark plug everyone is using, before I go out and buy every model in the NGK series.
I use the BP6HS, I found this much better than the B6HS as the electrode protrudes futher into the head.
I was thinking of going for a cooler plug like a BP8HS.
Steve |
06-12-2009, 07:28 AM
|  | Godfather of Motorized Bicycles | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 7,081
| | Re: What spark plug do u use?
B5Hs is what I have.
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06-12-2009, 02:07 PM
|  | Custom Builder / Dealer | | Join Date: Mar 2008 Location: Los Angeles, CA.
Posts: 1,434
| | Re: What spark plug do u use?
I agree with Joe... Try the 5 first! |
06-12-2009, 02:45 PM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2008 Location: Treasure Coast, Florida
Posts: 747
| | Re: What spark plug do u use?
I use the B6HS gapped at .035
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06-12-2009, 07:20 PM
| | Motorized Bicycle Elite Member | | Join Date: May 2009 Location: NEWCASTLE
Posts: 127
| | Re: What spark plug do u use?
I found no diff between the 5 & 6 so I went the cooler 6.
I recommend using the BP*** plug though as it seemed to give me much better results than the no protruding elctrode type b*** |
06-12-2009, 07:32 PM
|  | Motorized Bicycle Elite Member | | Join Date: Jul 2008 Location: OC, Ca
Posts: 285
| | Re: What spark plug do u use?
Quote:
Originally Posted by cyclepro101  I found no diff between the 5 & 6 so I went the cooler 6.
I recommend using the BP*** plug though as it seemed to give me much better results than the no protruding elctrode type b*** | Just be cautios. You could protrude the plug too far.
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06-12-2009, 10:30 PM
|  | Moderator | | Join Date: Mar 2008 Location: Cuk Ṣon, AZ
Posts: 4,722
| | Re: What spark plug do u use?
AutoLite 425 here |
06-13-2009, 12:29 AM
|  | Motorized Bicycle Elite Member | | Join Date: May 2008 Location: Fountain Hills, Arizona
Posts: 890
| | Re: What spark plug do u use?
I have used champion cj7y when clearance was an issue
(it has a much shorter head) |
06-13-2009, 06:09 PM
|  | Motorized Bicycle Elite Member | | Join Date: Jun 2009 Location: Washington St.
Posts: 391
| | Re: What spark plug do u use?
I use a b7hs, talked to another guy using a b9hs. If you can get away with a colder plug your motor will have more power. You can buy a b7hs at shucks/checker for 2 dollars. Try one. If nothing else you b5 users will have a spare to toss in your bag. GL
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