Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Oil cooler, Breaks?

[mjbayley]

Originally Posted by Ghost

That bypass is a bimetallic strip to prevent oil going to the cooler when not required.

For a race bike application IMHO it is not required, as you are more than warm before going on track then its being wragged solid. So any restriction in this area is not necessary.

Errrr not quite ? The spring flappy thing covers the hole that goes into the oil filter, and diverts it up to the oil cooler port (M14 to 3/8 JIC if memory serves)( that is usually blocked off with a plug on a 600). The return port goes back into the oil filter.
It's a spring flap so that if there is a blockage on the line to the cooler, the oil can flow round it and into the filter as normal.

If you don't put it in, the oil WILL take the path of least resistance, prolly not up into the cooler at all!

Thats all,
mark

[Ghost]

Well my 600 does not have it in and the oil flows and returns fine. the return is just a dump back into the crankcase.

I think oil cooler lines getting blocked are akin to having ones arm broken by a Swan.

Very few people know of it ever happening.

Just been having a constitutional rethink on this, it can only be a partial restrictor to maximise flow out of the cooler port, as without it both the filter port and the cooler outlet maybe of similar size. I'll look at installing one now. Perhaps. :-)

[mat2hew]

Yes.

[mat2hew]

The chap from Pro Twins seems to know all about it, what he told me seems to be about the same as Mark said, I'm going up there about 2pm today!

Matt #72