Trackmouse wrote:
Patrick wrote:
Add aluminum disc to top of piston?
Is that a thing??? Could I seriously, and reasonably accomplish this?
it depends on what alloy the piston was cast from... but either a small disc... or possible just a small puddle of weld build up would do the trick
RossD
UltimaDork
7/18/17 12:00 p.m.
Trackmouse wrote:
Another thought is to cut the section off that is above the piston, mill it down some, and then weld it back to the jug. But that is getting into some real crazy math Mattix stuff and I'm not prep for that
I wonder what the kerf alone would do to compression...
Based on the carbon buildup on the squish band of the pictured engine I'd guess that the squish is already tight and to add compression you would need to add material only to the chamber area of the piston, being mindful of valve clearance. Or doing the cut the jug and weld it back together thing you'd have to then sneak a boring bar in there to cut the head surface back for squish clearance.
Get a hand held battery powered vaccum cleaner and hook the inlet to the exhaust. Rig the on off button to the handle bars. It would be kind of a reverse turbo charger.
drsmooth wrote:
Get a hand held battery powered vaccum cleaner and hook the inlet to the exhaust. Rig the on off button to the handle bars. It would be kind of a reverse turbo charger.
Forced deduction? I imagine you would have increased oil consumption in the cylinder, which would be counterproductive as far as increasing performance. It would be amusing to see how long the plastic impeller and housing hold up.
In reply to drsmooth:
Is that a typo? How the hell could a "turbine" blowing into the exhaust do anything? Are you guys f'kn trolling me?
Not blowing, sucking. Suck the exhaust out.
Not sure how much effect that would have though. It would develop a vacuum in the combustion chamber so when the intake opens it sucks in charge before the piston moves down. With the piston at TDC, that would be a pretty small area and only have effect for a short time, as opposed to a normal turbo which would effect the entire time the intake valve is open.
NickD
SuperDork
7/19/17 12:06 p.m.
In reply to aircooled:
Ahhh, you're thinking along the lines of Detroit Diesels, where they scavenge via an air pump, although in that case it pressurizes a chamber to force the exhaust out.