james57

Hi all, need some advice on which glow plugs are best for my two cars. Both thunder tiger. EB4 and EK4. Not sure what do buy. Ive heard OS 8 are good? any thoughts and recommendations would be great.
Thanks

stoney452

iTrader: (1)

If you are talking about the TTR BX Pro 21 pullsart glow engine then yes the OS # 8 glow plug is good plug to use in that engine. Michael

ozziii

The O.S #8 is a medium heat plug & should work well, but the O.S #7 is slightly warmer being a medium/hot plug & may make the tuning slightly easier as a warmer plug creates a slightly wider tuning window.

D8

iTrader: (2)

OS #8 plugs are way too short for .21 engines., look for something like the RB#6,#5 standard plug.. racers edge & McCoy also have standard plugs..

ozziii

No not really, maybe for some but not all. Some engines suit short plugs & some suit long plugs. The Alpha RTR engine I had suited short plugs like the O.S #8 etc, long plugs like the O.S LC3 & 4 are to long for some engines & protrude into the burn room a small amount. (Yes, I tested it with a short & long plug on the Alpha rtr engine). Also, the short plugs in an engine like the O.S TM21 are to short, the long O.S LC3 & 4 plugs were made for them & sit level with the burn room. (Tested that too).
Best way to check is take the cooling head & burn room off the engine & try some different plugs to see how they fit, they shouldn't protrude past the threads into the burn room, they should sit level so the fuel flows evenly around the burn room.

james57

Thanks for the replies. The EB4 has a Pro 21r engine and the EK4 has pro 70
originally had ENYA 3 plugs as standard?. still unsure whats best for both engines, will OS 8 be ok for both? James

D8

iTrader: (2)

James.. do a search on whatever engines you have and go from there.. if the engine isn't made for short standard plugs like the os #8, don't use them or you could run into tuning issues..