Heymow - Lawnmower Racing Forum

Engine Help => Honda and Clone Engines => Topic started by: meanmachine on May 20, 2013, 07:44:05 pm

Title: what make and size spark plug
Post by: meanmachine on May 20, 2013, 07:44:05 pm
what make and size spark plug should a guy run in a 6.5 hp harbor freight clone hoz. engine this is for a racing cart on racing gas
Title: Re: what make and size spark plug
Post by: Gearhead0101 on April 18, 2014, 10:19:13 pm
I dig NGK plugs, bought one for my old go kart with a 6.5HP 212cc predator, but I don't remember the part number on it, gimme a bit I'll rummage through my files. I save everything, so I should still have all that. 
Title: Re: what make and size spark plug
Post by: GRUBDIGGER on April 20, 2014, 01:58:02 pm
NGK BPR4ES OR BPR2ES
Title: Re: what make and size spark plug
Post by: TomL on April 20, 2014, 05:16:57 pm
Autolite 3910X is what the Kart guys use. This is what we run in our MiniPro machines.



Tom
Title: Re: Re : Re: what make and size spark plug
Post by: Gui961 on April 20, 2014, 05:24:33 pm
NGK BPR4ES OR BPR2ES

why would you run a plug that hot. you want the right heat range for the engine and most of the time colder is better.

factory honda is ngk bpr5es or bpr6es
Title: Re: what make and size spark plug
Post by: GRUBDIGGER on April 20, 2014, 08:25:04 pm
HIGH COMPRESSION, COLDER PLUG. LOWER COMPRESSION, HOTTER PLUG.