I've been trying to figure out how to check the flow thru my set up. It would be real nice to have some type of an idea as to how much oil gets diverted thru the cooler. Yeah guys you've got me thinking, lookout. The plan is to set up a air tight 16 oz soda bottle with a to and from line downstream from the cooler and time how long it takes to fill when the engine is running. Still trying to figure out how to get a airtight seal on the tubing going into the top of the soda bottle, maybe a BIG blob of silicon would work. The plan would be to warm the engine up, install the bottle, clamp off the line to the cooler, start the engine and then unclamp the line and measure how fast the bottle fills. Even with smaller tubing the volumn would be the mimimum flow thru the cooler. Something to work on, I'll let everybody know if it works. I don't mind a little heat or head either

barry68v10 wrote on 12/31/69 at 16:00:03:



Why don't you think the head is getting cooled very well.  It is hard to see when installed but the top of the head is almost open to air all over the top.  There is only one place, near the right rear where the head is not open to air.  When the bike is moving, so is air, I do believe.

Check it with a flash light, you'll see the passages.

BTW - I have an old floor fan, that I often set behind the front tire when letting the bike idle for long periods.  Works good.

had a cooler on thumper clone when had modified engine insattel(horz honda style thumper)..
oil would drain back after shut down had insalled a head breather with filter at the intake rocker arm access cap..(i think)the ls 605 has head breather tubes which over flow(if any) into the air box..oil will settle back into the lowest point.after shut down which will show an over full condition at the site glass..
this is a low pressure oil system  7.1 - 10.7 psi sm shows taking reading at the front plug...part # 09915-74510 gauge, 09915-72410 gauge attachment..would think one could use the latter as a way to feed the cooler..tho i may stick out a bit too far...id still like a 12 mm banjo for the return into the bottom plug...i found and purchased the banjo bolt but the threads are wrong..

grim wrote on 12/31/69 at 16:00:03:



Your logic is inescapable.  

Greg- is it hard to bungee the floor fan to the pilllion rider's back rest??

Trippah wrote on 12/31/69 at 16:00:03:

Really hard on mine without a backrest

I'm still working on a way to measure the flow thru my cooler. The soda bottle in line with the cooler was a bit too half as$ed so I'm working on a piece of 2" pvc tubing that's capped on each end and has hose barbs set up for an in and out. I'll use a piece of clear tubing on the out line so I can tell when it is full of oil. The plan is to let the cooler fill, clamp the "to" line, shut the engine off and then hook up the chamber. Once that is done I'll start the engine and let the oil pressure stablize then unclamp the line to the measuring chamber and time how long it takes till I see oil coming thru the clear tubing that's on the "out" line on the measuring chamber. I still need to finish the PVC chamber and measure it's volumn but I'm hoping to keep it around .5 liters so I won't oil starve the engine. I also found that my multimeter has a thermometer probe good to 300 degrees so I'll be checking temperatures as I go along.The parameters I'll be testing will be flow at cold startup during idle and at different rpm's while cold. I'll also check hot oil flows at the same rpm's as the cold flow data points. I need to see if it is possible to attach the temp probe to the back of the cooler and take some readings while riding, maybe a little duct tape and ty wraps will do the trick. I'm interested to see how much if any of a temperature drop occurs between the inlet and outlet while riding. It is going to take a bit of work but should be worth it.  

I think a simple trick is all you need.

You'll need a thermometor on the engine or even the cooler.  Then cover the cooler with a cardboard box or tinfoil or whatever.  Ride your favorite route until hot.  Keep a record of temps, oil & air.  Remove the cover and repeat.  After all, temp drop is what you really want to know.

Any thing you do to measure the oil flow will affect the actual flow mainly cause you're dependant upon a very small volume of oil.  Filling a T'd off cylinder is your best idea and may work.  I'd add an equal sized cylinder in the T section full of oil.  So, as the hot oil comes in, the new oil goes out preventing stavation and throwing off your measurement.

I got some temperature strips that can be applied anywhere you want to read temperature.  Haven't put them on yet.  Will post later how they work.

http://www.framebreakerracing.com/New_Framebreaker/Mototemp_Strips.html