Oil cooler

[MAXIMAN]

Louis

Hey your engine looks great. Good paint job.

The Cooler is a B&M Supercooler 70265. Got it at NAPA.

The thermostatic valve was purchased from Summit Racing online. I had originally bought a B&M 70259 thermostat but it had the 1/2 connectors. I wanted 3/8 so I found one at Summit's website. However the B&M would work fine and you get those at NAPA.

Both were about $85 I think.

[gaffer77]

just put a cooler on ebay

seen 2 lockharts on ebay lately (nos)

look real nice!!

[MAXIMAN]

A good friend told me to get the Lockhart 600 if I could. It has a much higher BTU exchange rate. I think the Lockhart maybe fin and tube type.

This B&M Supercooler is a plate type exchanger and gets rid of heat more efficiently...least that's what I've read.

[Pat Kelly]

I would think (just pondering again) that for a typical motorcycle application, oil cooler behind the forks, that the "tube and fin" would be better.
"Tube and fin" would allow air to pass through and continue over the engine (or cylinder head). The plate type could block airflow.
Seems the plate type would be better when mounted with the airflow moving across it as opposed to straight into it.
I'm not that familiar with the plate type so I may be wrong.

[MAXIMAN]

No not really. The plate type allows air flow through it as well as T&F. But the effective cooling surface area of the exchanger is much larger even though the size of the radiator is same.

The way this is achieved (it appears to me) the plates aren't really plates but almost look like tubes that have been flattened thus creating a "Hollow" fin of sorts that the hot oil flows through. The fluid in the flattened tube is exposed to more exchange surface and thus cooling medium (air) due to the geometry of the core.

A tube and fine is simply a round tube with heat dispersing fin wrapped around the tube. Fluid only flows through the tube and not the fin. For some reason (I'm not a mechanical engineer) this type of exchanger doesn't get rid of the heat as efficiently as a "plate type". It appears to be due to these two facts:

1-the the plate or flattened tube spreads the fluid over a larger area for heat dispersion.
2-the plate also acts as the fin in and of itself so there is more direct contact between the oil and the cooling medium (namely air).

[Pat Kelly]

That makes sense

[MAXIMAN]

Well I dunno about that. I'm not much at explanations.

But if you get a chance look at one. I know you can find it on the web....or go to an auto parts store and look at the difference. It's real obvious how they work when you see 'em in person.

[planedick]

Oil cooler....

Well, I don't expect any problem finding an oil cooler, but I'm still looking for an adaptor that goes under the filter so I have a place to hook it up. Does anyone know where I can get one?

[Cykotic]

Mine has an oil cooler, 1981 xs1000h, but i thought it was a stock part, guess i was wrong, but i seems to work great. I'll try to find out more about it if i can.

[John]

The H model came from the factory with an oil cooler, as it was a full blown touring model.

[Pat Kelly]

There has also been mention of running cooler lines from the oil feed tube at the back of the head/cylinders. Do a search of the forum and read the pros and cons of tapping into this area.

[planedick]

Oil lines

Pat, the oil lines to the head would work only just a little because the volume moving through the cooler is limited to just what goes through the bearings, so the flow would be very minimal. I really need an adapter plate between the filter and case.
Dick

[MAXIMAN]

Planedick

One more time. CALL OZ CYCLE SALVAGE

1- 785- 242- 0600

He WILL have one. I just sent one back to him a couple weeks ago and he said he could get more.[

http://www.ozpowersports.com/

[planedick]

OZ cycle parts...

I talked to the guy at the salvage yard in KS, he told me he would only sell the complete unit and I have already invested in the same cooler and regulator as Maximan shows in that photo of that beautiful machine. I am still in need of an adaptor plate and special nut. I'm sure I can make the plate, but I don't know about the special nut. Maybe when I get it apart so I can "eyeball it", I may be able to find or make a special nut. If anyone out there can sell me an adaptor plate and nut I would be forever grateful. This thing gets really hot in the So Cal heat.

[John]

You'll be ok in the SoCal heat. It's the Texas, Oklahoma, Arizona and New Mexico heat that will get you. I had an old Yamaha TX750 backin the late 70's early 80's, and I was in the Navy In San Diego. I never had any heating problems. Granted, having one surley won't hurt anything either.