MJ86GT

I've just broken in an RB S7 and want to change glow plugs. What are some of the alternative glow plugs available for this motor? My local shop carries several different OS plugs, any of them work?

Jeff Ford

iTrader: (24)

No, OS plugs will not work they are of the short variety, you need long. O'Donnell 99's work well.

GHETTOTEACHER

I have been running OS plugs in my S7 with no problems. The plugs that I use with that motor are OS R5 and 8's. I've raced many races with the OS plugs in my RB's. The rule of thumb that I have boon using is that a short plug will work in a long plug button. The result is lower compression and a little higher RPM. I have not found any dammage or lack of power running a OS plug in my RB.