Question To All The Gearheads?

[Bert]

Interesting side point, those GM 2.2s were put in the S10s and Isuzu Hombres, assembled in a certain building we're all becoming familiar with.. Just sayin'...

 

[Bert]

Well, sometimes that new tech can't be "proven" until it's out and being used by people like you and me! The first time I read about pistons being put in high performance motors with NO SKIRTING on them I about died! I believed ther was no way in heck it would work!
I was wrong of course, wider spacing between the oiling rings and compression rings took care of the piston cocking in the cylinder issue, and some companies included a third set of rings on their pistons, also eliminating the potential for twisting inside the cylinder!
Now it's almost standard fair for all manufactures!

 

[harlan stephens]

I think what defines the good from the bad is time.
and at times, dyno sheets....

 

[Bert]

Agreed!

 

[wheaters]

Putting the timing chain at the back of a longitudinal engine/transmission setup isn't a sound idea, imho, because you can't easily get at it without removing the engine. Nor is making the drive sprocket for the chain an integral part of the crankshaft. When the plastic (nylon?) chain guides wear out, the chain goes loose and damages the drive sprocket. Because that's part of the crankshaft, think total engine rebuild on a new crank. Ugly!

 

[Bert]

I must've missed something Wheaters? Who's putting the timing chain at the back of the motor? I've only seen one piece crankshaft with gears on small engines, like lawn mowers?

 

[wheaters]

Look up BMW N47 engine problem on YouTube.

I was referring back to my post #16.

 

[Bert]

Oh my dear Lord, what a nightmare!

 

[harlan stephens]

Wow wheaters....had not seen that.
Even the big guys get it wrong.
And seem to have problems fessin up.
....

 

[MajorXx]

Back to the original topic. Engine items that will help obtain the mileage target. The reduced weight of an aluminum block. The small displacement of 900cc engine. Variable valve timing. Fuel injection management.