neverenough

This is why i am allways in the doghouse........ Cant resist getting a laugh at some of these post

Totallyrad

And all this time I thought you rotated the engine to change the timing for altitude compensation. Boy, do I feel silly!

CD in NM

Have I missed something . . Besides the GREAT HUMOR in responses . . Wasn't that about setting the timing in gassers, relevant to spark, etc? Something about retarding the timing BTDC when UN-leaded gas came out as the old timing settings with leaded fuels were ATDC?

CD

grantx5

That's the whole point, retarded timing leads to misunderstandings. Now in the gasser world this may be moot but with diesel the curve goes up, or so my Ford friend says.

BlackSunShyne

Soooo, guess that is a big negative on that one.

Never know 'till you ask tho, but I should have known better than to ask a bunch of arm chair comedians.

But seriously,that was just a new one, been around diesel engines (in trucks) since '98 and had never heard that one, guess you are never too old to hear some new EDIT.

Thanks for laffing at me, not with me

gmctd

No, no - you are right - it is all about timing.

You may have noticed that almost all infernal combustion engines, at first made only in the northern hemispheres, rotate in the clockwise direction when running - this is because liquids - fuel, and otherwise - swirl in a clockwise direction in this hemisphere.

This makes it very easy to time fuel injection in an engine for various power levels, because the cw fuel swirl approaches TDC in the same direction as the crank is spinning - the Inj Pump can be timed to coincide with the arrival of the fuel at any point Before Top Dead Center, allowing the engineers to tune the torque and horsepower peaks into any rpm band as requred.

However, the standardized CW engine rotation produced an unusual problem in the southern hemisphere, where liquids swirl in a counter-clockwise rotation.

As the CW crankshaft rotates toward TDC, bringing the piston up to TDC, the fuel, swirling in a CCW direction, is approaching TDC from the opposite direction, or from After Top Dead Center - which produced the effect known as fuel unjection.

A few CCW rotation engines were produced experimentally as an attempt to overcome this, but drivers down under did not easily adjust to navigating their new vehicles via the rear-view mirrors, altho it did allow them to drive on the right side of the road.

Also, one speed in the forward direction and three-to-five speeds in the reverse direction - via the reverse-rotation crankshaft - did not pan out well for sales, or EPA and CAFE mandates.

So, with considerable help from a small engineer abducted from the Isuzu plant, it was determined that slanting - or tilting - the engine a number of degrees in the ATDC direction would allow timing the IP and CW rotating crank to coincide with an event which could occur as the CCW rotating fuel had passed to the BTDC side of the mark.

Voila!! They were in business, tho timing adjustments could be a somewhat trickier procedure than in the northern hemispheres.

So, now you know the other side of the story - and the behind-the-scenes secret of the Mopar slant-six (Oops - too far, **** Chung!) is out.
<><><><><>

And, hopefully, BlackShyne, you will consider this - we are making jest at another of the myths surrounding our noisy, stinky, point of interest, namely, the brainchild of Rudolph Diesel.

Thanks for bringing this one to light................

Jim Lane

If you dig a hole through the center of the earth and you jump in, will you fall out the other side of the earth feet first?

gmctd

May depend on your shoe size - but that would be a looooong walk back, eh?

Thanks for a very entertaining, tho definitely off-center, thread, folks - it is, to laugh.

mr T

deep and thought provoking....i conquer

kelley15

If this thread was on a treadmill.. and then you flushed it down a toilet . Would it spin clockwise?

gmctd

Yes - but........ how wouldja get the treadmill into the toilet?

bighornram

Maybe i should take my motor out, spin it around, mount it upside down in the bed, make it run the other direction, and then drive the truck backwards south of the equator...............or is that to much power for a 48re?

gmctd

Absolutely!

I'd be willin' ta take that weak 48RE offa yer hands - you know, so it don't letcha down in the pinch..................

Jim Lane

No, you would just have to jump back into the hole you just fell out of then you should come falling back out somewhere in America.
I think..

gmctd

Ahhhh - yes, yes - didn't think about that.

Hmmm.........lessee.......no, no, not good, dude - you'd hafta wait until the earth tilted back on it's axis, such that that side would be up, and this side would be down.

It's the seasonal thing, as the earth rotates about the sun, don't ya know..............

Holy cow! - what if ya dug the hole when the equator was parallel to the plane? - you could jump in , but you wouldn't even fall thru!

Naw....naw - 'cuz if you dug the hole clear thru, you'd already be over there, right?

Yeah - but, then...ummm....how're ya gonna get back?

Dude, this is gonna take some real careful plannin'.

Awwwwww........all this thinkin' is just makin' my head hurt!