I'm not sure, i dont know anything about glow plugs i just go to the hobby store and tell them i need them and they give them to me. However i was going to buy this engine for my maxx once the one in it dies. This isnt helping you but, is it a good engine, any problems?
this may work, I'm not sure though. read the discription and see.
glow plugs shouldnt have a performance effect for the simple fact tat all the glow plug is used for is to start the engine once you get the engine startted the glow plug is useless.
From what I've read, turbo plugs provide less turbulance in the combustion chamber of the cylinder. It creates a smoother flow of the vapor as the glow plug ignites. It also puts the coil further down in the combustion chamber to ensure a more consistant ignition.
There is a performance increase, but from what I understand, it's an increase that only professional drivers notice. To the rest of us, it just makes for a more expensive glow plug and we can say we use a turbo plug. (yippee?)
Anyway, a turbo plug will only work on an engine head/head button that is designed for it. It's shaped like a cone at the end that matches up to the actual hole it goes into. Like someone else said, there isn't a washer for the plug to make a seal, it depends on the beveled edge to make the seal. This type of plug requires more cautious maintenance as to not get a spec of anything on the bevel or you end up with an air leak. Unlike the normal plugs that use a soft brass washer that smashes around small particles of dirt, they still make a good seal.
Sorry for the derailing, but I thought I'd add in what I've read.