wvaborn

My Feedback: (13)

Hi All:
Long story short, acquired some 4 stroke glo plugs, don't have a 4 stroke, can I use them in my 2 stroke engines. ? The plugs are hanger 9, I believe Fox says their's are interchangable, but don't know about these.
Any ideas would be appreciated, thanks to all who respond.
Norm

Gray Beard

My Feedback: (-1)

I do. I ordered one plug a long time ago and they sent me a complete flat of them by mistake and said to just keep them all. Not a bad four stroke plug either. They are a bit hotter then an OS 8 but I haven't had any problems with them or the engines.
Is it correct to be using a hotter plug?? No, I prefer the OS #8 but in a pinch I used the H and just left them in the engine. I have also used them in old engines with lower compression instead of an idle bar plug with good results.

opjose

Many .46 sized glow 2C engines and above come with "long" glow plugs with exactly the same length as the four stroke plugs.

As long as you are not running them on smaller engines, you should be fine, and in some cases you'll realize an improvement when the engine is mounted inverted.

jeffie8696

Plug selection is part of the tuning procedure. A hotter plug will burn the idle mix cleaner and allow you to use lower (cheaper) nitro fuels in most cases with relatively little power loss. A lot depends on your engine, it's compression ratio, timing, everything. A quick tool to help me decide on what plug to use is to set it for max rpm needle peaked then apply some glow driver heat, if the rpms increase you can get away with a slightly hotter plug, do this in steps and do not go beyond because it will decrease the rpms if too hot a plug is used. You can test this also using the same method, if the rpms decrease with heat your plug is either at maximum or too hot.
A power panel makes it a cinch. Yea I tinker , but it pays off.