Originally Posted by
tc5 man
well i dont think its a leak and the carb o-ring looks fine its a nova carb ring its thick but it dint look damage its not old. maybe should just remove the sealent than.
cdc on here said to remove a shim to run 20% with a hot/meduim plug what do you think of that will it do any harm ? the s5 has 2 shims on it already but it hasnt ran right with a meduim plug so i was thinking there was a leak.
the shims are .20 mm.
If you know the signs to watch for to know if your engine is pre detonating you can try pulling a shim. I would stay with a medium plug to start. The S5 is not a high performance engine it is more of a mid level engine. I have felt an S5 be somewhat underpowered in a buggy for my driving style so in a truggy it will never perform like a high end race engine.
Just know that you can destroy an engine if you run it while its pre-detonating.