Oil cooler. One or two? Closing off - one or both?

Started by stopintime, August 21, 2012, 04:09:22 PM

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ducpainter

It was speculated that the Evoluzione restricted oil flow by about 10% when fully open.

Is that acceptable?
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stopintime

@ Corey
I think it has to be a by-pass valve to allow oil flow to maintain oil pressure. Like Jagg or Pegasus.

@ Raux
Thanks - that should work

@ DP
If the surface area is, let's say 50-100% larger, I speculate that it will still be 'enough'. Can't remember which of them, but they claim a reduction of 10-12 degrees Celsius (~20F?). For my application it wouldn't hurt with a little more, but then I'd probably need two coolers and it requires a lot of plumbing if I also wanted by-pass valves on both.


I didn't think I would need more cooling, but I do. It must be because of the high degree of tuning. It's not the first or second time out on the track - it's the third and on, when the engine hasn't had time to cool off properly OR speeding on the highway with an already warm engine OR a 20 mile mountain pass...
252,000 km/seventeen years - loving it

stopintime

I've been reading the huge Setrab catalog and thinking about location, fittings, brackets a.s.o.

Then my eyes started bleeding and I wanted to look for easier solutions.

The HM Evo cooler has a core almost twice the size of my stock HM.
Plumbing is easy, I think it fits and WOW it's $350 cheaper than an imported SC Project or Febur!!!
252,000 km/seventeen years - loving it

stopintime

The Permacool thermostat I bought didn't work.

Speculation is that it, even in the 'warm position', flows too much oil and very little travels through the narrower cooler passages. Probably ok for a car with three, four or five times our oil flow...

I'm back to stock, but with plans to mount my HM Evo cooler - hanging under the horizontal head - partially covered for cold days.
252,000 km/seventeen years - loving it

memper

While we are on the subject I'm going to apologetically thread jack.

Why are there oil coolers on some models like the classic monsters and no coolers on others like the 696 and 796? I would argue that engine size matters but I have seen all sorts of large cc bikes without oil coolers. And then some smaller bikes with them.
Sure, you benefit from being able to hold a bit more capacity but I'm at a loss as to the inconsistency of their use as well as their effectiveness.
Correct me if I'm wrong, (most often I am :) ) but doesn't current synth oil have a very high breakdown point? Something like 300 degrees or more? If your motor gets up past that, no cooler will help a damn. Also, a cooler doesn't work when you're not moving, when its most needed. Flying down the highway it becomes pointless.
Am I way off here?
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

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dufukincati

http://www.ebay.com/itm/1996-Ducati-Monster-900-69920411A-NOS-Mikuni-carburator-cold-weather-heating-kit-/360561905418?pt=Motorcycles_Parts_Accessories&hash=item53f32a0f0a&vxp=mtr

1996 Ducati Monster 900 69920411A NOS Mikuni carburator cold weather heating kit. Operates by running engine oil from the oil cooler through passageways in the new float bowls so that the bikes reaches operating temperature much faster in cold weather. Petcock turns it off when it is not needed. Fits all Monster 900 models with Mikuni carbs. Complete kit and easy to install. List price $282.99.