Originally Posted by
tc5 man
its a rb c5 engine thats what it said on the box,im gone to use it on the my truggy. nevermind i talked to him and he, said it was in a old box. its a s5
the rb box says c5 circuit racer but, i looked on the rb website and it said it had 3 ports? doesnt make sense. and the cooling head, is much bigger on the rb engine that i brought from ,a fellow racer . its a rb head.
the model number on the rb box says 1005-c
Ok so the 1005-C box is a box for an old C5 on-road engine. The S5 is a pretty good engine, I have never personally ran one in a truggy but I have seen people do it. If you want to find out for sure what it is the serial number on the engine it's self would help. If it is an S5 it's a 5 port engine.