I noticed a 5 year old post for dropping in an OS 21TM for the Jato. I spoke to OS and they said the engine is a drop in replacement but they recommend the HPI header. Unfortunately the HPI head is not made any longer. Does anyone have a step by step or a parts list needed to install the OS 21TM in the Jato?
It looks like the OS is a solid engine. I know it turns out a lot more torque than the TRX3.3 but I would rather have a more reliable engine. Thanks for your help!