what could have caused this?

[chino12]

i did today like 2-3 minutes of some burnouts and i fucked up the engine .. what do you think could have caused this? too much oil? a small crack which had expanded coz of the pressure? im trying to see if i can prevent it somehow for the next engine coz this for sure cannot be welded, starter also has a fresh small crack

[Cjones]

damn!

[RYAN SMITH]

welded haha. snapped rod

[old man roger]

Looks like some one didn't do the clean air mod.


''If'' you have oil in your air box then you probably pumped oil from your crankcase vent tube into your cylinder.

This will cause the motor to hydro lock ..Oil doesn't compress so the connecting rod did.

Another reason could be that you blew a head gasket and filled a cylinder with coolant, coolant doesn't compress so the connecting rod did.

[anarchist35]

yep

[#TMNT]

Originally Posted by old man roger

Looks like some one didn't do the clean air mod.


''If'' you have oil in your air box then you probably pumped oil from your crankcase vent tube into your cylinder.

This will cause the motor to hydro lock ..Oil doesn't compress so the connecting rod did.

Another reason could be that you blew a head gasket and filled a cylinder with coolant, coolant doesn't compress so the connecting rod did.

Bingo. new to stuntin but not new to motors.

[chino12]

Originally Posted by old man roger

Looks like some one didn't do the clean air mod.


''If'' you have oil in your air box then you probably pumped oil from your crankcase vent tube into your cylinder.

This will cause the motor to hydro lock ..Oil doesn't compress so the connecting rod did.

Another reason could be that you blew a head gasket and filled a cylinder with coolant, coolant doesn't compress so the connecting rod did.

clean air mod was done, the head gasket looked fine from my pov

during the winter rebuild, when i opened the oil pan and wanted to do the pickup oil mod i foudn a tshirt in the pan, yea thats right a tshirt

i assume it was put there for a reason, coz no one forgets a tshirt in the engine

however i took it out

ever heard of this?

[PeRkz]

If it aint broke dont fix it! Leave the shirt! lol

[mart211]

Originally Posted by PeRkz

If it aint broke dont fix it! Leave the shirt! lol

If you would've found a shirt in your bike's engine, you would've left it in?

[maverickxp]

ive heard of some weird shit in engines, but damn, and to save your next engine, dont do revlimiter burnouts and youll be fine