XTM 24.7 glow plug

[craig911]

Hi guys I'm looking for a glow plug recommendation,

I'm currently using a os8 plug.

What plug would be best to use in the XTM 247 ?
Its a .26 engine,

I have 2 unknown plugs ( reveal spoiler for images )
if any one knows what they are let me know.

Spoiler

 

[olds97_lss]

Look like odonnel medium sport plugs, which is a bit cooler than the OS8 and should do fine in the 24.7. I ran OS8's in my 24.7 as well as McCoy MC8's, the oddonnel plug would be in between those.

Also depends on the fuel you run. 20-25% nitro would probably be best with a big block running a medium plug.

 

[craig911]

Look like odonnel medium sport plugs, which is a bit cooler than the OS8 and should do fine in the 24.7. I ran OS8's in my 24.7 as well as McCoy MC8's, the oddonnel plug would be in between those.

Also depends on the fuel you run. 20-25% nitro would probably be best with a big block running a medium plug.

Thanks they came with the engine when i bought it,

oh and i run 20%