Changed glow plug runs like a champ until it hits second gear then blows the front drive belt off, now I remember why I stopped racing it. I need to see if I have a new set of pulleys for it, they are original and the car as a whole has had about 30-40 gallons of fuel ran through it most all of it on race tracks, so I guess they are due for replacement. Before this engine it had a few OS .12's.