McCoy #8

[Winndaddy]

I have a couple of McCoy glow plugs left over from my old ride and i was wondering if this plug will be good for the 4.6? It looks a bit longer than the hpi plug.

 

[Bankrupter]

good all around plug. I use it in every thing with a top end pipe

 

[Winndaddy]

Thanks buddy.

 

[frddyj]

they rock with 30% byron's gen 2 race

 

[Winndaddy]

I can't believe how knowlegeable you guys are about this stuff. I have sidewinder 20%.

 

[frddyj]

I can't believe how knowlegeable you guys are about this stuff. I have sidewinder 20%.

try it with that, but chances are the 20% will want a warmer plug

 

[Bankrupter]

I used them for 20 ,25 and 30

 

[Winndaddy]

Is Sidewinder pretty ok?

 

[frddyj]

i used them for 20 ,25 and 30

=o
..........

 

[Winndaddy]

From what I'm getting, Byrons 30% sounds like its the stuff!!

 

[frddyj]

From what I'm getting, Byrons 30% sounds like its the stuff!!

best fuel ive used, but then again, ive used some real crap!

 

[Londoner]

Is the #8 a med plug? Or med-cold? In McCoys I've only used #9's so far but they're definitely the best plug I've ever used, seem to go well in my LRP.30 on 30% Byrons.

 

[M0rphin3]

I run MC8's in my F4.6 and K5.9 no problem, now my LRP .28 is a different story, it hates those plugs for some reason, seems to really open up and run smooth on OS#5.. anyone will tell you, it all depends on your location and how you run it on what plug/fuel works for you..

 

[MikeK1981]

It does make a difference where you live. Could be a big difference from location to location. I tried the MC-8 in the k5.9 and it didn't like it much with Sidewinder 30% nitro/10% oil. I run the MC-9 and it works better for me. I think a smaller motor may like the MC-8 better though.

 

[JoeGuam]

they rock with 30% byron's gen 2 race

Byrons make the 30% for Mugen Seiki.<-- For Japan geograpical personnel wanting Byrons.
4gallons =$140

 

[ChaseMe]

As a side note, can you guys recommend a plug for me?

I'm trying to break in an LRP .30 and it's about 55-60 degrees out right now (12-15c). The plug that came with the engine is still good as it's brand new, but I think it's too cold.

The engine will fire with A LOT of pulls (pre-heated to 150c with hair dryer) but wont stay running without the igniter. I assume my plug is too cold?

 

[MikeK1981]

More likely your too rich or the plug is bad. I run a cold plug in those temps with a .36 on 30% fuel all the time. The theory I read is that higher nitro contents like a colder plug, and the bigger the motor the more it will like a colder plug. So if your runnin a big block and higher nitro you most likely will want a cold or med-cold plug.

 

[ChaseMe]

Needles are stock, as it's not broken in yet. Plug is stock so I'm not even sure what temp it is, probably should figure that out first! I'm running 25% O'Donnels. In any case, in these temps what's a suitable 'cold' plgu number from McCoy or OS? Seems this 'hot' or 'cold' is different between plug manufacturers.

 

[MikeK1981]

I think the MC-9 is a cold.

 

[Bankrupter]

I use hot plugs to run in mills. I never get near max RPM to worry about detonation. easy start , easy run. not about performance