Installed the reed valve on old malossi crank cases with the PWK 35 airstriker and a fuel pump with the vacuum taken from the crank case
Seems to be running ok, besides some small details...
I did a leak down test, seems to be holding air well...
Malossi 210 worb5 ported
Stock px200 gearing
60mm stroke crank
PWK 35 airstriker,
45 pilot 1.5 turns out
Scooter and service low compression head
Scooter and service newline exhaust
0.5mm head gasket
0.25mm base gasket
malossi Vespower MkI 1.2kg+400g
Exhaust 191 deg 32.4mm
Transfers 137 deg 45.7mm
However... After passing the leak test, (Iím assuming itís air tight and no leaks at the clutch seal) but it seems to have quite a bit of black oil (has the smell of the 2T oil, but itís quite thick...) at the exhaust tip of the exhaust after WOT... I was thinking it might be an overly rich main... but stepping down from 160, 155,152, then arriving at 150... itís still there...
Iím wondering if itís an oil sucker at higher crankcase pressures? Is the only way to find out is to measure the amount of oil in the crank case and see?
Or could it be the fuel pump pushing fuel out too much? How to make sure the pump is working properly at high vacuum?
Last edited by 108 on Sun Mar 14, 2021 8:35 pm; edited 5 times in total