TXC449 Oil cooler?

Anyone know where you can buy an oil cooler for a TXC449? Anyone ever use one?
Easy to install?
Thanks

If you are unsuccessful in finding the necessary hardware to install an oil cooler, the adapter doesn't look too difficult to have made by a machinist. This nearly doubles the oil capacity of the engine as well.

This oil cooler is tiny, 4.5", and can easily be mounted on the side of the cylinder where the new fuel canisters are located:
http://www.hrpworld.com/index.cfm?form_prod_id=781,776,587_6038&action=product

Someone needs to take the ball and run with it. Has to be pretty good demand out there for it. Id buy one.

Long distance racers/riders would use these. Im think of donig some BITD races next year on my txc449 but from what Ive heard motors need an oil cooler for extra capcity and cooler oil temps.

The average everyday rider does not need an oil cooler. You might not even need one for racing, but for long distance desert races such as those in Nevada, Southern Cali and Mexico, it's probably a good idea.

I myself do not race, but I have overheated my 511 to the point of blowing engineice out the overflow. Granted I was in Johnson Valley in +106° weather and probably shouldn't of been there in the first place. I love fun projects and will probably put together a oil cooler for my application.

I'm sure the folks over at Zip-ty racing could shed some light on oil coolers for Husky, they seem to know a lot about them. While you're there, check out Ty's new desert race tank for the 449/511, it holds about 3 gallons of fuel which would put your total near 5.5 gallons total.

Spent the better part of today hanging out with Ty & Zip-ty racing while he set up my 511 for Shamrock's event this weekend. I was able to take a look at his oil cooler fitting he developed and it totally blows away the one I posted earlier. He was able to integrate a stainless steel oil filter onto the fitting and have two precision outlets for oil transfer. The water cooling system on the 449 platform works very well and runs very cool, but the oil temperatures are considerably above normal between 325 to 375°F. The alloy used to manufacture the cases of the 449/511 is different than Japanese alloys in that it holds heat in and does not dissipate it. Massive oil coolers are needed in order to cool the oil sufficiently, but space to locate these coolers are an obvious problem. Ty is developing a new system which will eliminate the need for a massive cooler, yet will still increase oil capacity and cool very efficiently with very little modification.

The other option to using an oil cooler is just to replace the torque limiter prior to each major race. Husqvarna does not sell the beveled pressure disks separately and requires you to purchase the entire limiter with gears for $229.

Higher oil capacity would be great, I know a few who could use it on their daily commuter SMR's.

You're correct Kelly, as I stated in a previous post,the average everyday rider does not need an oil cooler. This is a race application. The low oil levels, as you know, are required to keep the oil from blowing out the breather. Speedbrain posted a recommendation to remove the crankcase ventilator from the air box and add a separate air filter to it when they designed the 480cc overbore.

When racing the 449 platform over long periods of time in elevated temperatures, the torque limiter may fail. Basically, BMW designed the 449 platform to have two wet clutches. Most manufactures design a cushioning dampener into their clutches in the form of rubber bushings. Early huskys had this dampening in the rear sprockets. This is needed when jumping and bringing the engine to a halt suddenly. Rather than damaging the engine, these cushions give a little. The cushioning effect on the 449 platform was engineered into a torque limiter which is on the right hand side of the crankshaft, in the inner case under the clutch. There are no springs in the torque limiter other than beveled disks. When heated excessively by extremely hot oil, these beveled washers loose their ability to provide constant pressure. Racers have reported that slipping has occurred during hard uphill climbs but that the torque limiters are re-engaged after cooling down. It is unclear what exactly happened to Malcolm's teams torque limiter when it flew apart, but that it did happen. Running thicker oil will not have an impact on this issue. It is this reason, above others that an oil cooler is recommended. Large reserves of cooled thinner oil will keep the engine performing while racing.

The oil cooler is easy, but making the actual adapter is very difficult. And after my exhaustive search across the internet, I didn't find anyone who was making the adapters.

So I pulled the trigger and had a couple of these made. I didn't like all the external parts of the adapter I posted above, so I had a custom conical stainless steel oil filter attached to the adapter that fits inside the oil filter housing and still allows oil to be ran to an external cooler.

How much? Need a tester. Still might try and race bike in BITD this year.

Found a nice catalog here for oil lines, and heat coverings which I may put over my fuel lines like Speedbrain does.
http://www.scribd.com/doc/83284990

These heat exchangers are extremely efficient and light weight, and have no coolant restriction. Perfect for this application.



http://www.racerpartswholesale.com/product/1562/Laminar_Flow_Oil_to_Water_Heat_Exchangers

Why are you using these exchangers?

They are the most efficient I have found so far. I would like to see if there are any others available?

They don't give those things away, but I like the idea.

Why not a traditional cooler? These will take the oil heat and put it into the water system.

Your right, they are extremely efficient when the flows are set up right but they are really intended for another environment. Traditional use is for heating fuel in aircraft prior to burn, super cold fuel is warmed by engine oil.