hi


today i was training again.
The engine was performing wel.I did change the head today.I did keep the arrow button and just put the novarossi 21/4 head on.Nice fit.
The engine did run a little cooler. It did fall from 257 to 230.


Was running grate for around 6 tanks and then suddenly stop.The clutchbell dit cut the fuel line in two pieces.
I put the fuel line back.It runs grate for 2 min then starts to rew up a little.
I stop it.Inspect the fuel line and find several cuts in it.
Throw in a brand new one,also for the exhoust.
Start it up and start racing again. After a minute it rews up again.
Tried to adjust the needles but in my head i knew something was wrong.

I took the engine of and inspect the bearings and carburator,no wet spots.
Then i turned the engine upside down and look at the crank case.
There it was,a crack.
I had my novarossis rewing up many times and always driving the same track.
But this is my first cracked up crank case.

Everytime i had red about this happend to others i have thinking:
What the f4y4y are they doing with theyrs engines....

I guess this can happend to eny engine.

It seems like everything else is ok.

But is it possible to fix this? is there a glue or something that can fix this??