I do a comp test and leakdown each nov (or dec) whenever I put it up for the few winter months here.. Always great numbers.. lets pull some plugs and have a look..

thanks again all

I personally have noticed if you run to big of a line on the rear ports of the intake, that the water temp on the upper end stays really cool and builds a bunch of condensation in the oil galley. Tested differant size lines and the smaller the better. On my personal engines I have a 1/8" line of the rear ports, they dump overboard. Tried #6 then #4 then went down to 1/8". Just want to bleed the air from the rear not change the coolant flow. Unless you were having water pressure issues previously, some times bigger is not better. Did all my testing on a dyno, and noticed with the bigger lines the rear cylinders of the engines were way to cold. Never have tested the theory to run the lines to the front, I always dump the overboard. So I agree with Mild Thunder something that was changed recently. Or the 1 in a 100 chance you did loose a gasket seal some where.

So I went down there today and had a look.. pulled the dipstick. not one drop of milk.. nothing.. wiped it and pulled it several times.. nothing.. just pure V-Twin 20-50 oil with about 8 hours on it. filled exactly to the same hight as always. Pulled the plugs. the front (#1 and #2) look to be a little darker then I would like.. The rest were a light brown to a white-light brown color. right where I would expect to see them at 8 hours. but no hints of reversion at all that I can see.

So what did I see on the dipstick yesterday?

Maybe a little aeration in the oil. Had you been running it hard? Do you have a windage tray?

Run it again and check. Water does not disappear unless its really minor condensation that burns off.

Aeration huh? would too much or too little oil cause this? I run a 10qt Hardin pan offshore series. Nice piece. tray is in there. perhaps the builder did not meausre the dipstick correctly?

Since I switched gears in the lower I am now opperating at more RPM to SPEED ratio.. instead of 50@3000 I am now 50@3700.. perhaps running at higher RPMS is expsoing an oil level issue?

I agree. water does not just vanish.. But I know I saw something there yesterday on the stick.. and today it is perfect.

Too much oil will cause this. The crank hits it and bam milky oil. You may need to drain a quart and watch your oil pressure/temp.

Sounds like you need more prop pitch. Have you run it at wide open yet? What was the old redline vs. new?

I will monitor the oil next time out.. if it does it again, I will drain a QT and re-test.

Why do you say that about pitch? is 3700rpm @ 50 to high?
I am running a p5 hydro (26 pitch) labbed by Mike at halls prop. with the 1.25 ratio drive I was having a hard time getting to mid 80's @ 5000 rpms. (non GPS spedo at the time). Thats the max I could spin the motor..
I have not run it WOT yet this year. Trying to be nice to the new gears in the lower..

You will have to turn it over 6000rpm to go faster than the 1.25 or increase the pitch. Whats the new redline going to be?

5600 or so is the limit. I would like to see this motor last another 5 years.. :-)
I dont have any top end metrics yet.. I know I gained 700 rpm @ 50.. I will see this weekend assuming the oil issue is a non-issue first.

Then 80MPH will be the max. If at full throttle you see it going past 5600rpm you need more pitch.