Random TRANSPORTATION pictures

[sammyg2]

[sammyg2]

[sammyg2]

[sammyg2]

[widebody911]

[widebody911]

[t-tom]

That's my favorite race car of all time.

[URY914]

[URY914]

[Jolly Amaranto]

Battle Ship Texas at Todd Shipyard in Galveston. October 1989.

[Sarc]

[URY914]

[URY914]

[URY914]

[URY914]

[NeedSpace]

[Rusty Heap]

Here's a Piston comparison, Banshee ATV 2 stroke twin, 350cc stock.


A Big Bore 404cc stroker engine piston on the left, Stock on right, but joined with a common wrist pin.


Big bore dyno'd out at about 60 hp.




Illustrates how on a 2 stroke, the pistons' fuel window port timing can be shifted to make mo' horsepower. As well as piston skirt height.


Note also, Left big bore piston exhibits the classic 4 points seize from a too lean on-top at max RPM's.

Too hot piston skirt expands / swells up then seizes the engine locked up tight...........yeah unfortunately at ~60 mph on pavement, so pull in the clutch, coast to the road side.

Let engine cool for 5 minutes, kick it over and ride it home.

[porwolf]

To add to the maritime theme, here a picture of my VW that I drove in 1969 from Munich to Los Angeles. We both made the trip with the SS United States from Le Havre to New York City in 5 days for $300 each, and not a scratch on the car. Taking a car on a regular trans Atlantic passenger ship was common then. Those were the days!

[kach22i]

From a 2007 thread.
Anyone using GT Racing's complete 911 roof?

[sammyg2]

Originally Posted by Rusty Heap

Here's a Piston comparison, Banshee ATV 2 stroke twin, 350cc stock.


A Big Bore 404cc stroker engine piston on the left, Stock on right, but joined with a common wrist pin.


Big bore dyno'd out at about 60 hp.




Illustrates how on a 2 stroke, the pistons' fuel window port timing can be shifted to make mo' horsepower. As well as piston skirt height.


Note also, Left big bore piston exhibits the classic 4 points seize from a too lean on-top at max RPM's.

Too hot piston skirt expands / swells up then seizes the engine locked up tight...........yeah unfortunately at ~60 mph on pavement, so pull in the clutch, coast to the road side.

Let engine cool for 5 minutes, kick it over and ride it home.

Increasing bore on a 2 stroke also increases compression ratio unless the dome is relieved. That means it needs to run richer.
Radical porting mods also mean it needs to be richer.
Some folks like to "break-in" with extra oil, which makes it run leaner.

Hopping up a 2 stroke for more power almost requires needle and jet moves to richen, otherwise hot sieze.

BTDT lesson learned the hard way in my yoot.