[andresuz]

Hi guys I'm new so thanks for the opportunity to the forum. I have a 450 and its leaking antifreeze in the left side (filter) or gearbox oil to come to the story is it has broken the piston and the damages the sleeve and bend 2 outlet valves so i bought spares and new piston gasket sets to repair but leaking antifreeze so for the fourth time buying new gaskets and skim the head and the sleeve new gaskets and assemble as i started it drive with it i see that the oil is changing start to get gray. Now i don't know anymore is there someone that have the same experience that may help i will love that.

Thanks Andre

[JimDirt]

Welcome to the site !!

I am wondering if you did not install the dowels ?? , when placing the cylinder and/or head .... what ever it is , it is either a installation issue , or somewhere the case was damaged when things cut loose ... unfortunately , the only way to find out is to tear it apart again ....

[Aussiecrf230]

Does the water pump seal cause this issue.
Pretty sure it is in gearbox oil.

[JimDirt]

Yea it can cause water in the oil , but he also said it is leaking from the left side as well , I am assuming it is showing on the outside of the case (that part confuses me)