piston damage

[nappx]

Any idea how this problem occur..

 

[Waiyuan Kooi]

one of the piston ring break?

 

[mafia_staff]

Chip stones get inside your trumpet...

 

[xtremeleo]

ring land crack? overheating is a known contributor, or boost if u have a snail ler

 

[kumar22mostwanted]

ring land crack? overheating is a known contributor, or boost if u have a snail ler

tell me about it lol

 

[xtremeleo]

in your case kumar, it was hydrolock imo..

 

[nappx]

one of the piston ring break?

The barrier between upper n middle drain dunno what term 'longkang'

---------- Post added at 11:44 AM ---------- 6 hour anti-bump limit - Previous post was at 11:42 AM ----------

Chip stones get inside your trumpet...

Yup im using open trumpet without condom or netting,..
Stone go inside might be..but maybe better damage..or immediatelly brakedown...

---------- Post added at 11:45 AM ---------- 6 hour anti-bump limit - Previous post was at 11:44 AM ----------

ring land crack? overheating is a known contributor, or boost if u have a snail ler

Overheating..nop..

 

[KHWONG]

Air fuel?

 

[xtremeleo]

a lil lean doesnt do this kinda damage, must me loss of coolant, no?

 

[Waiyuan Kooi]

just 1 of the piston kena? then maybe most easy answer, quality problem~

 

[lkeong88]

Is not quality problem, normally if engine got problem mostly kena piston number 3, then second is kena number 2. The others are rarer

 

[xtremeleo]

because of the short zorst manifold runners, heat soaks more in dat piston and damage it

 

[meg_omen]

it's tuning bro...
i might be having the same problem... 'dah makan minyak hitam'...
power still there only down a bit... might do overhaul after you...

probably next better to tune on dyno, then road, then recheck again on dyno...
a lot having same issue even trackers...
it's when you lift-up your throttle from WOT, and then step on it again...

 

[cuscostrutbrace]

hmmm...

 

[meg_omen]

bro cuscostrutbrace,
don't worry i'm not quoting or blaming you for anything...
coz like my engine, a lot of hands has tried to tune it and last is you...
at the time my engine is already 'so-so' coz 'dah start makan minyak hitam' already...

probably coz i'm using EmB and many tried to extract the most out of it...
they forgot that EmB is piggyback - meant to compensate what ori ecu can't...
with cam higher than 270, i know it's best to use standalone instead...:shot: