> Lolita ✌ Wrote:
> -------------------------------------------------------
> > Steven Kwak Wrote:
> > -------------------------------------------------------
> > 50/1 WILL NOT CAUSE HIGH RPM OIL GUMMING IF YOU'RE USING GOOD OIL.
> > OIL COMING OVERHEAT YOUR PISTON.
> > THEN YOUR SHIT WILL ZING AND POSSIBLY SMEAR THE PISTON ON THE
> CYLINDER
> > WALL.
>
> Hair-splitting speculation.
>
> I use cheap petroleum stuff. It's "good oil". 30:1 ratio with no engine
> damage.
You need to pull your face out of your girlfriend and do a little research.
Yes you can get away with 30/1 with no issues for the most part.
Old school technology ran looser clearance between the piston and cylinder wall.
They did this two allow the Piston room for thermal expansion.
Newer technology uses Hyperbaric Pistons.
They contain a silica content from 7 to 9 per cent.
This reduces the thermal expansion by close to 50%.
So they tightened up the clearance between the piston and cylinder wall.
If you run a heavy oil mix and or cheap oil in a tight clearance motor.
The oil will actually break down and begin to jail and gum.
This increases friction causing the Piston to expand.
This causes the oil to gum and sticking to the point even the gas cannot act as a thinning solvent.
Your head temps will appear fine but the Piston is drastically overheating due to the increase sidewall friction.
Then your engine will seize.
Years back Pelini actually went to 77 shop in San Francisco..
77 showed up, box full of seized kits.
The first thing out of their Factory Representatives mouth was how much oil are you running..
77 got schooled and told to run 60/1.
Yes your cylinder will be fine with leaner oil mix with the new oil blends.
But the bearings need oil to protect them from premature failure.
But go ahead beat a dead horse. (edited)