Motorized Bicycle Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle Engine Kit Forum > Motorized Bicycle > Motorized Bicycle General Discussion

Motorized Bicycle General Discussion All topics regarding bicycles with engines.


What spark plug for my 80/66cc engine?

All topics regarding bicycles with engines.


Reply
 
Thread Tools Display Modes
  #1  
Old 04-09-2010, 12:54 AM
meowy84 meowy84 is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2009
Location: Canada
Posts: 238
Thanks: 0
Thanked 2 Times in 2 Posts
Default What spark plug for my 80/66cc engine?

Hello y'all. I'm in the final stage of installing my engine kit. It's the 80cc slant plug engine kit from Zoombicycles.com. Anyways I figured I might as well get a good quality plug to replace the original Chinese one. Any recommendations? I'm looking for a good all-around plug wih the proper heat range so engine won't foul. I'll be using the bike for general commuting and just bombing around, not all out speed trials (LOL) so need something that will operate good a idle as well. Any tips/help would be appreciated.
Reply With Quote
  #2  
Old 04-09-2010, 01:03 AM
AaronF's Avatar
AaronF AaronF is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2009
Location: Illinois
Posts: 389
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: What spark plug for my 80/66cc engine?

A NGK Spark Plug is a great replacement for these engines such as a NGK # BPR6HIX OR a NGK # BP7HS Advance Auto usually has a larger selection of plugs so you could check there.SBP also carries both of these plugs at a good price. Have fun!

Last edited by AaronF; 04-09-2010 at 01:05 AM.
Reply With Quote
  #3  
Old 04-09-2010, 01:54 AM
BarelyAWake's Avatar
BarelyAWake BarelyAWake is offline
Super Moderator
 
Join Date: Jul 2009
Location: Maine
Posts: 7,512
Thanks: 0
Thanked 235 Times in 152 Posts
Default Re: What spark plug for my 80/66cc engine?

By far the most common plug used to replace stock is the NGK B6HS, the NGK BPR6HIX Aaron recommended is the fancy iridium one, the BP7HS is an extended tip plug with a cool heat range

Last edited by BarelyAWake; 04-09-2010 at 01:57 AM.
Reply With Quote
  #4  
Old 04-09-2010, 10:09 AM
Venice Motor Bikes's Avatar
Venice Motor Bikes Venice Motor Bikes is offline
Custom Builder / Dealer/Los Angeles
 
Join Date: Mar 2008
Location: Los Angeles, CA.
Posts: 5,631
Thanks: 12
Thanked 110 Times in 95 Posts
Default Re: What spark plug for my 80/66cc engine?

Use a NGK B5HS or a B6HS... The #7 is way too cold! (NGK #'s are 1= hottest)
__________________
For motorized bicycle sales, service & engine kits in Los Angeles, please visit us at- www.VeniceMotorBikes.com

Follow us on facebook... facebook.com/VeniceMotorBikes
Reply With Quote
  #5  
Old 04-09-2010, 06:26 PM
meowy84 meowy84 is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2009
Location: Canada
Posts: 238
Thanks: 0
Thanked 2 Times in 2 Posts
Default Re: What spark plug for my 80/66cc engine?

Great! Thanks for the info guys. Greatly appreciated.
Reply With Quote
  #6  
Old 04-09-2010, 06:35 PM
ZRTMWA ZRTMWA is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2010
Location: Baltimore, Maryland
Posts: 138
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: What spark plug for my 80/66cc engine?

Quote:
Originally Posted by BarelyAWake View Post
By far the most common plug used to replace stock is the NGK B6HS, the NGK BPR6HIX Aaron recommended is the fancy iridium one, the BP7HS is an extended tip plug with a cool heat range
I have the iridium BPR6HIX, I never used the stock plug so I can't really compare it to that, but it runs great. What exactly does extended mean? Extended into the motor or larger spark gap? The iridium actually has a bigger spark gap (@ .032") than the BP7HS (@ .027").

Quote:
Originally Posted by Venice Motor Bikes View Post
Use a NGK B5HS or a B6HS... The #7 is way too cold! (NGK #'s are 1= hottest)
Yes, NGK recommends for every 100 horsepower added you should get one level cooler plug. With Japanese plugs like NGK, the higher the level the cooler the plug.
Reply With Quote
  #7  
Old 04-21-2010, 02:54 PM
meowy84 meowy84 is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2009
Location: Canada
Posts: 238
Thanks: 0
Thanked 2 Times in 2 Posts
Default Re: What spark plug for my 80/66cc engine?

Venice mentioned using either the B5HS or a B6HS plug. What's the difference between the two? I assume the 5 or 6 refers to the heat range? Since I'll mostly be running my bike in the city I'll be running at at low to mid-range speed rather than all out. So which plug would be recommended for that type of riding?
Reply With Quote
  #8  
Old 04-21-2010, 04:09 PM
stuartracing's Avatar
stuartracing stuartracing is offline
Motorized Bicycle Elite Member
 
Join Date: Dec 2008
Location: Gainesville FL.
Posts: 488
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: What spark plug for my 80/66cc engine?

I`m here in fl. and run mine in the city like you do but I use a B7HS without any issues whatsoever....The higher the number the cooler the plug...I beleive a B6 is what the stock plug cross`s over to.....You aren`t going really notice a HUGE difference buy going one step colder/hotter plug...If you go extremly hot on the plug it WILL burn a hole directly though the piston.....But with these motors you could go from a B5HS to a B7HS and not really notice a thing....IT won`t make your motor run colder or hotter....I have a billet head on another one of my bikes which bumped up the compression quite a bit and am running a B8HS NGK plug.....
So just run the NGK B6HS and you should be just fine until you get more performance upgrades done......MY 2 CENTS WORTH.....
__________________
Life in the Fast Lane......
If your living on the edge , you`re taking up too much space....

Last edited by stuartracing; 04-21-2010 at 04:11 PM.
Reply With Quote
  #9  
Old 04-21-2010, 06:22 PM
flybytaco's Avatar
flybytaco flybytaco is offline
Metal Molding Madman
 
Join Date: Oct 2009
Location: seekonk MASS
Posts: 1,176
Thanks: 2
Thanked 1 Time in 1 Post
Default Re: What spark plug for my 80/66cc engine?

what billet head are you running a b8hs?
__________________
the evader
Reply With Quote
  #10  
Old 04-21-2010, 07:09 PM
stuartracing's Avatar
stuartracing stuartracing is offline
Motorized Bicycle Elite Member
 
Join Date: Dec 2008
Location: Gainesville FL.
Posts: 488
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: What spark plug for my 80/66cc engine?

The one from Pirate Cycles made by Creative Engineering.....
Nice cyl. head.....
__________________
Life in the Fast Lane......
If your living on the edge , you`re taking up too much space....
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 08:02 AM.


Sponsors

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
MotorBicycling.com