I'm not meaning to spew out options.. ok so this is how I've read this conversation.

1. There is a oil cooler mod option using the factory ports. I was going to do this to add additional oil to the system and achieve some cooling effect.

2. There appears to be some discrepancy surrounding how adding a cooler to the factory ports might affect the low pressure/volume flow to the head. Oldfeller recommends NOT doing the cooler mod for this reason.

I'm just wondering if anyone has actually fitted a cooler, and found this to be the case. Or is it just assumption that due to the already weak oil flow, adding more oil and a longer pathway (via the cooler) will impede oil flow to the head on startup and idle.

someone who's done it...

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1155323497/0

Oldfeller--FSO wrote on 02/10/14 at 20:20:40:

That fitting dumps into the oil filter cavity.

Quote:


He ran the oil cooler out into a bucket.

Feeding the oil filter cavity with ambient temperature oil is nice, but what temperature is that small volume of oil going to be when it gets around and over and up and over and across to the cam bearings?    The castings are all at engine operating temperature, so I suspect the cooled oil is too by the time it gets up to the head.

If he didn't block off that cases/cover passage, he has a 50/50 mixed bag of input oil temperatures actually feeding into the oil filter cavity.   Half will be ambient air temp and half will be engine operating temperature.

It all comes down to the same old quandary, to be safe you keep the pressure high (volume low) and get very very little effective cooling out of the rig.

If you want a lot of real sump cooling effect, you need a separate high volume low pressure pump that just moves a ton of oil from the sump up through the cooler and back to the sump, circulating repeatedly.

You do know the SV650 uses aimed oil jets to blast oil streams on the bottom side of the piston crown -- Suzuki calls it the "Suzuki oil jet cooling system" and they use it in all their high performance engines.

I don't think the Savage has that "Suzuki oil jet cooling system" with the separate aimed oil nozzles and all -- we likely just use a slinger system that takes the post-use eccentric crank pin lube flow and slings it up to splash lube the piston and cylinder walls.

Just splash lube, no intentional piston crown cooling.

Supercharging and Nitrous will both overheat the center of the piston crown and we do have us a beer can sized piston dome to deal with ....

...... with it getting all hot and softening some in the middle  .....

                                               bet the top ring groove area expands a whole bunch more than normal when boost is high, too

This is the third time Verslagen and I have gone at the oil system.  

First few times were attempts to rig up long term oil filtration, I built one, he identified an oil furnace filter system that was superior (and if we could find oil pressure and volume enough, I'd buy one of his furnace filter rigs as you can just go buy the fine filter elements fairly cheaply).

This time we went at it trying to find oil flow that was enough to cool something  in any significant fashion.   We re-hashed Ed's best effort looking for a clue but found that Ed simply was pushing only half his minuscule high pressure oil flow through his cooler and running it back into the filter cavity.    

Pressure safe up in the head, yes,  but not effective at cooling anything in a significant way.

So, unless Versy has another nugget to offer Savage Bob is on his own now.

Yup, I think Savage Bob got the chance to learn a lot -- we spread out all the issues we have seen in making attempts at GO FAST and what you bump into once you get there.

Bob is still saddled with his beer can big uncooled piston crown and the supercharging combustion heat.  

He could rig a alky/water mist system to lower combustion temperatures at the source ...... but that is extreme supercharger tech and he should go there to learn more about it.

Savagebob:

I am not sure that you will really be making a bunch of heat.  The majority of the time you will be riding around at a steady speed just like the rest of us.  If we need 6 HP (just a guess) to motor around at 50 mph on level ground......my engine with a Wiseco and a cam or your motor with a supercharger are both going to be making the same amount of heat.  You and I are both fighting the same resistance and have to make the same HP to overcome it.....so our throttle settings may be a bit different to accomplish it......but overall we are going to be moving similar amounts of air and fuel through the engine to maintain 50 mph.

And if in fact you are not making a bunch of boost and running pressures that Premium Pump gas can handle.....even for short blasts down the block you are not going to be cranking out huge amounts of heat that are going to overwelm the stock cooling.

Now if you decide you are going to be running 80 mph for hours at a time in 90 degree weather.....then....Huston - We have a problem.

Until you prove the Supercharger is going to work, and that it is reliable and functional - I would not bother with the oil cooler at this point.  My bike has no problem at sustained speeds below 60 and the head temperature stays between 250 - 280 degrees.  If I start doing 65-75 mph sustained runds when chasing Oldfeller - the engine temperature approaches 300 degrees.  On one 1st gear gravel road in the mountains when it was 90 degrees and humid I also got to 300 degrees.  Keep your sustained speeds reasonable.....and you won't have a overheating problem.  

 

I used a Trailtech Vapor speedo/tach unit, and it has a temperature gauge built in.  The sender I used is supposed to go under the spark plug....but it would really be tough to mount it there on the Savage as the is no room.  Instead I mounted the sensor under the nut and washer on the left rear cylinder stud.

Other folks have used their temperature gauge as an oil temp monitor and they used that oil galley plug at the front that you have been eyeing for use with an oil cooler.