- Hole in piston
- SB17 vs SB18
- TT 50: Brand of fuel makes a difference?
- "Converting" my Fury to OS engine?
- Starting when cold?
- New mount for Hatori SB-50 "Krause Special" Pipe
- OMI big bore and viperhead
- Who got YS 91 in stock?
- we got our SZs!!!!
- OS with Cline mod or YS stock
- O.S 91 with Viper head
- OS 91 c-spec with SB14 Hatori
- Needle setting
- OS 91 SZH engines from RC-mushroom
- CSPEC Muffler?
- Enya SS 50
- Cspec PS and 60M carb, 3 needle mod?
- Tuned pipe dent?
- CSPEC Cline Mod
- C-Spec head... blue rubbed off
- Which way does the head go on?
- Muscle pipe cut in half
- nitro content in fuel
- Let's tuning motors
- new 91 engine