[NRY]

Hi Guys,

We had an interesting failure today racing and I was wondering if anyone had ever seen it before. It looks like a plug which is inserted after machining of an oil return path to the sump . It came out and so did all of the oil, race over.
(Hopefully the pics attach, my first post here I think )

Neil

[JimDirt]

Welcome to the site !!

I personally have never heard of this , you might want to PM Ken , the owner here and see if he has run across this , doing a quick Google search , i came up with nothing on the subject


Ken: memberlist.php?mode=viewprofile&u=3&sid ... fc910645c7

Sorry i can't be more help ...

[NRY]

Cheers Jim,

I've spoken to the mechanics here in Australia who took the 450x to multiple wins at all of our desert races for over 10 years, pretty much dominating the scene until Toby turned up, non of them have ever seen it. There is a first time for everything I guess.

[crfsonly]

I too have never seen this before. Very odd . I can't even imagine what would have caused it other than a manufacturing defect. What's your plan to repair?

Ken

[Aussiecrf230]

Bummer what a way to end a race.
The photos show just a pressed in plug.
Is that what I am seeing?
Seems doomed to failure.

Needs some safety across it to stop it coming fully out again. At least a detected leak would let you know there is a problem.
The use of small screws with washers around a welch plug works so something similar perhaps.

[NRY]

Hi Ken,
I wasn't there but this is the fix. A cut down bolt tapered into the hole apparently. The bike was refilled with oil as it had lost most of it and restarted. It ran but wouldn't idle so they called it a day.

I've told my mate he's come up with a world first failure

head fix.jpg

It was pretty messy.

Condo oil mess.jpg

[JimDirt]

Well hopefully there was no engine damage from running it low on oil .... and yea , that's definitely a job for a Pressure Washer

[driver3]

Is that your gas tank in the last pic on the left? Please send a pic of this bike!