what engine is this? it is bigger than my .15 o.s. engine. it says cv-r on the other side and o.s. max on the picture side
it is on a tmaxx tho that is obvious. im just curious the tmaxx full of rpm upgrades was $45 no tranny. great parts truck for my brothers electric tmaxx

That is probably an OS .18 engine I dont which but you can get a hold of Hobbico tech support they could steering you in the right direction.

That OS engine looks like an older version of the O.S 18 CV-RX.

ok thanks. now i have to find a car to put it in and the one way bearing nut for the back. i think i have one from my .15 that wil work just gotta find it. i have a carb and pipe and there is compression