piston top is a dark brown

[seanl]

i was havin a look at the pison on my truck an it a dark brown on top carnt see the sides, is that ok or is it a sign of being cooked ?

 

[MotoGod]

Could just be carbon build up.

 

[JTRACING]

I will agree with that Moto.

 

[neobart]

Is it a chestnut kinda brown, or more of a black kinda brown?

If it's the latter then it's fine. If the inside of head button has the same colour kinda like this.

Then it's a sign of a close to perfect combustion.

Black is almost always a sign of to lean running.

 

[Rolex]

Most fuels leave a 'fingerprint' behind. Below is a pick of an early Traxxas engine that has run very clean on Blue Thunder. If you have a transparent color, it's a sign of a very good tune.

I think you're fine.

 

[ThunderTiger]

Neobart, Rolex, thanx for the pics, helps put a worded explanation in a better context !

Neobart, nice ceiling fan !!!

Rolex, What happened to "Mr finickity Clean everything to look like new" ?? That rig looks FILTHY !!!

 

[Captain Chaos]

Gasp :whhooo: is that real dirt Rolex or is that more of your art work to simulate rust and dirt?

 

[brad55102]

if you take the piston out and wipe it down the brown will usually come right off.
Just rub hard.

not a big deal

 

[superdave2]

yeah i would have to say your fine on how its tuned no worrys

 

[seanl]

neobart thanks for the pics ! they are spot on to what i see with my truck more of a chesnut brown ! very help full , thanks

seanl