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Why Do American Makers Go for Big Displacement



 
 
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  #1  
Old December 25th 04, 07:23 PM
stork
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Default Why Do American Makers Go for Big Displacement

It seems that German car makers favor high output with small
displacement, but Americans favor getting that output through large
displacement. For example, the new GM Z06 Vette rumoured to be
launched in 05 will feature a 7 liter engine to make around 500-600hp.
But, Porsche will get similar power out of a much, much smaller
displacement engine. What are the reasons pro or con for either
approach, from an engineering perspective.

Thanks!

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  #2  
Old December 25th 04, 07:34 PM
Mark Olson
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stork wrote:
>
> It seems that German car makers favor high output with small
> displacement, but Americans favor getting that output through large
> displacement. For example, the new GM Z06 Vette rumoured to be
> launched in 05 will feature a 7 liter engine to make around 500-600hp.
> But, Porsche will get similar power out of a much, much smaller
> displacement engine. What are the reasons pro or con for either
> approach, from an engineering perspective.


It probably has more to do with tax laws than engineering...
  #3  
Old December 25th 04, 07:51 PM
Nate Nagel
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Mark Olson wrote:

> stork wrote:
>
>>It seems that German car makers favor high output with small
>>displacement, but Americans favor getting that output through large
>>displacement. For example, the new GM Z06 Vette rumoured to be
>>launched in 05 will feature a 7 liter engine to make around 500-600hp.
>>But, Porsche will get similar power out of a much, much smaller
>>displacement engine. What are the reasons pro or con for either
>>approach, from an engineering perspective.

>
>
> It probably has more to do with tax laws than engineering...


Well, there are some advantages to large displacement - large
displacement means that the internal engine parts - pistons, connecting
rods, crank, etc. - are going to be larger than in a smaller
displacement engine. Therefore all things being equal, for the same
power output, the larger displacement engine should theoretically be
less stressed than the smaller engine, and therefore should last longer.
(this can be offset somewhat by more careful design, use of higher
strength materials, etc - but those things cost money.)

However, there's one wrinkle - a supercharged engine is actually
*easier* on the connecting rods and associated parts than an
unsupercharged engine due to the lack of reversing stresses. So that's
one easy way to get more power from a smaller displacement.

But overall, Mark is right, in Europe vehicles tend to be taxed by
displacement, and fuel is much more expensive as well (and smaller
displacement engines tend to get better fuel mileage) so those are two
good arguments for smaller displacement engines that aren't such a big
concern here in the US.

nate

--
replace "fly" with "com" to reply.
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  #4  
Old December 25th 04, 07:54 PM
Mike Walsh
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The United States does not have any taxes based on engine size.
A pushrod engine is lower than an overhead cam engine and will fit under the low Corvette hood. Americans like big displacement engines with lots of low end torque to get the tires spinning.

Mark Olson wrote:
>
> stork wrote:
> >
> > It seems that German car makers favor high output with small
> > displacement, but Americans favor getting that output through large
> > displacement. For example, the new GM Z06 Vette rumoured to be
> > launched in 05 will feature a 7 liter engine to make around 500-600hp.
> > But, Porsche will get similar power out of a much, much smaller
> > displacement engine. What are the reasons pro or con for either
> > approach, from an engineering perspective.

>
> It probably has more to do with tax laws than engineering...


--
Mike Walsh
West Palm Beach, Florida, U.S.A.
  #5  
Old December 25th 04, 08:20 PM
TCS
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On Sat, 25 Dec 2004 18:54:56 GMT, Mike Walsh > wrote:

>The United States does not have any taxes based on engine size.


And many european countries DO have taxes based on engine size.

See the difference?

  #6  
Old December 25th 04, 11:57 PM
Mike Walsh
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solution.
But if you are still paranoid, you can substitute pork butt.

5 lb. lean chuck roast
3 lb. prime baby butt
2 tablespoons each:
salt
black, white and cayenne peppers
celery salt
garlic powder
parsley flakes
brown sugar
1 teaspoon sage
2 onions
6 cloves garlic
bunch green onions, chopped

Cut the children?s butts and the beef roast into pieces
that will fit in the grinder.
Run the meat through using a 3/16 grinding plate.
Add garlic, onions and seasoning then mix well.
Add just enough water for a smooth consistency, then mix again.
Form the sausage mixture into patties or stuff into natural casings.



Stillborn Stew

By definition, this meat cannot be had altogether fresh,
but have the lifeless unfortunate available immediately after delivery,
or use high quality beef or pork roasts (it is cheaper and better to
cut up a whole roast than to buy stew meat).

1 stillbirth, de-boned and cubed
¼ cup vegetable oil
2 large onions
bell pepper
celery
garlic
½ cup red wine
3 Irish potatoes
2 large carrots

This is a simple classic stew that makes natural gravy,
thus it does not have to be thickened.
Brown the meat quickly in very hot oil, remove and set aside.
Brown the onions, celery, pepper and garlic.
De-glaze with wine, return meat to the pan and season well.
Stew on low fire adding small amounts of water and
seasoning as necessary.
After at least half an hour, add the carrots and potatoes,
and simmer till root vegetables break with a fork.
Cook a fresh pot of long grained white rice.



Pre-mie Pot Pie

When


  #7  
Old December 26th 04, 12:11 AM
TeGGer®
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allow to sit for a few minutes.
Sauté in butter and olive oil until golden brown,
about 6 minutes on each side.



Shish Kababes

As old as the hills, this technique has employed seafood, beef, pork, lamb,
poultry, and vegetables; just about anything can be grilled, and young humans
are no exception!

High quality marinade (Teriyaki and garlic perhaps)
1 inch cubes of tender meat, preferably from the nursery
Onions
bell peppers
Wooden or metal skewers

Marinate the meat overnight.
Get the grill good and hot while placing meat, vegetables, and
fruit such as pineapples or cherries on the skewers.
Don?t be afraid to use a variety of meats.
Grill to medium rare,
serve with garlic cous-cous and sautéed asparagus.
Coffee and sherbet for desert then walnuts, cheese, and port.
Cigars for the gentlemen (and ladies if they so desire)!



Crock-Pot Crack Baby

When the quivering, hopelessly addicted crack baby succumbs to death,
get him immediately butchered and into the crock-pot, so that any
remaining toxins will not be fatal. But don?t cook it too long,
because like Blowfish, there is a perfect medium between the poisonous
and the stimulating. Though it may not have the same effect on your
guests, a whole chicken cooked in this fashion is also mighty tasty.

1 newborn - cocaine addicted, freshly expired, cleaned and butchered
Carrots
onions
leeks
celery
bell pepper
potatoes
Salt
pepper
garlic, etc
4 cups water

Cut the meat into natural pieces and brown very well in olive oil,
remove, then brown half of the onions, the bell pepper, and celery.
When brown, mix everything into the crock-pot, and in 6 to 8 hours you
have turned a hopeless tragedy into a heartwarming meal!



George?s Bloody Mary

Don?t shy away from this one, it is simply a cocktail variation of
good old Blood Stew.


  #8  
Old December 26th 04, 12:13 AM
Anthony
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the memory of Grandma with this dish by utilizing her good
silver soup tureen and her great grandchildren (crawfish, crab or
lobster will work just as well, however this dish is classically
made with crawfish).

Stuffed infant heads, stuffed crawfish heads, stuffed crab or lobster shells;
make patties if shell or head is not available
(such as with packaged crawfish, crab, or headless baby).
Flour
oil
onions
bell peppers
garlic salt, pepper, etc.
3 cups chicken stock
2 sticks butter
3 tablespoons oil

First stuff the heads, or make the patties (see index)
then fry or bake.
Set aside to drain on paper towels.
Make a roux with butter, oil and flour,
brown vegetables in the roux, then add chicken stock and
allow to simmer for 20 minutes.
Add the patties or stuffed heads, and some loose crawfish,
lobster, long piglet, or what have you.
Cook on low for 15 minutes, then allow it to set for at least
15 minutes more.
Serve over steamed rice; this dish is very impressive!



Stuffed Cabbage Rolls

Babies really can be found under a cabbage leaf -
or one can arrange for ground beef to be found there instead.

8 large cabbage leaves
1 lb. lean ground newborn human filets, or ground chuck
Onions
peppers
celery
garlic
soy sauce
salt pepper, etc
Olive oil
breadcrumbs
Tomato Gravy (see index)

Boil the cabbage leaves for 2 minutes to soften.
In skillet, brown the meat in a little olive oil,
then add onions, peppers, and celery (all chopped finely)
and season well.
Place in a large bowl and cool.
Add seasoned breadcrumbs and a little of the tomato gravy,
enough to make the mixture pliable.
Divide the stuffing among the cabbage leaves then roll.
Place seam down in a baking pa


  #9  
Old December 26th 04, 12:18 AM
Huw
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"TCS" > wrote in message
...
> On Sat, 25 Dec 2004 18:54:56 GMT, Mike Walsh >
> wrote:
>
>>The United States does not have any taxes based on engine size.

>
> And many european countries DO have taxes based on engine size.
>
> See the difference?
>


In the UK it is likely that any engine much above 2litres will be in the
highest tax band so it really does not matter whether an engine is 3litre or
6 as far as tax.
Fuel is very expensive though and smaller displacement high power engines
tend to be more efficient and much lighter.

Huw


  #10  
Old December 26th 04, 12:47 AM
Anthony
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"stork" > wrote in news:1103999017.552000.323060
@f14g2000cwb.googlegroups.com:

> It seems that German car makers favor high output with small
> displacement, but Americans favor getting that output through large
> displacement. For example, the new GM Z06 Vette rumoured to be
> launched in 05 will feature a 7 liter engine to make around 500-600hp.
> But, Porsche will get similar power out of a much, much smaller
> displacement engine. What are the reasons pro or con for either
> approach, from an engineering perspective.
>
> Thanks!
>
>


It's all about torque, not horsepower. Large displacement, longer stroke
motors make more torque at a lower RPM. (It's over 600hp on the new
vette, btw).
Check the torque curves of the porche motor vs. the vette. The porche
will not be making a lot of power until much further up in the RPM range.
That 7 liter will be making power from just off idle on up.



--
Anthony

You can't 'idiot proof' anything....every time you try, they just make
better idiots.

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