Eco mod my predator 459cc times 2

[Piotrsko]

It has an oil pump but the con rod isn't cross drilled?

Sounds like technology from the 1930's

[oil pan 4]

Yeah and there's no roller bearing on the crank.
The only reason to give up rollers and go with flat bearings is if you are going to gain a cross drilled crank with a very tight fitting rod, like 2 thousands.

[oil pan 4]

I tested the stock intake under full load at 4,000rpm. I barely get a vacuum reading. So the intake is fine.

[Piotrsko]

The other reason for flat bearing is halving the cost of rollers in an engine not expected to make TBO before it rusts to death.

[oil pan 4]

I rebuilt my completely worn out Honda gx390 and the rollers had no detectable wobble. So those rollers will last at least 2 or even 4 rebuilds.

[oil pan 4]

New eco mod for the predator 459cc.
I'm going to add an oil filter that bleeds off a little oil volume, runs it through probably a PH8 style oil filter and back to the crank case. Might do an oil cooler too. Should at least double the life of the oil, maybe even quadruple it.

[oil pan 4]

New mod for the 459cc. The predator 459cc will accept standard timing advance keys.
I put a 6 degree key in, which should give more like 8 or 9 degrees of advance.
I think tomorrow I'll see if I regret it.

[oil pan 4]

Runs great, I think 4 to "6 degree" advance keys will be standard.

[oil pan 4]

I sent off an oil sample to be tested after 3 hours of run time, no filter. Told blackstone labs this was the first one ever oil fill, they said the wear metals were a bit high, 20 iron and 13 aluminum but to run it for 10 to 15 more hoursand retest. I installed a mobil1 filter and ran the wood chipper for 20 minutes and pulled another sample. The number of shinny metal flakes have been reduced from possibly hundreds of shinny metal flakes reflecting in the sunlight to dozens.
The mobile1 filters are a bit loose, only stopping 99% of 30mu particles. I think I'm going to put on a BT259 hydraulic filter which stops 99% of 12mu particles.
Note I did not change the oil after that sample, I'm testing to see if adding an oil filter and maybe a cooler can increase oil life dramatically, like 5 to 10 times.

[Piotrsko]

Did blackstone say what the flakes were? I would guess lousy machine process cleaning