Posted on 04/25/2008 7:24:46 AM PDT by Red Badger
the Vet ain’t plastic and the resale tween your choice and the Vet is light years apart
“Yay”, she exulted, “I’m the highest scoring white guy on a basketball team!”
Your asian daughter is a white guy? :-)
Hotshots upgrading from a BMW 318i will be mangling these Vettes all over the nation in the first week of ownership, guaranteed.
The Japanese make great appliance type cars but their attempts at high perf stuff (Acura NSX etc) always seem to
fade away into obscurity.
Is that 27 mpg maintained at nearly 3 times the speed limit?
the NSX could not keep front tires under her.....the last Toyota Supra was a good effort however
I think you’re correct. Six hundred thirty-eight is more horsepower than the average Joe can handle. Although I assume the car has traction control.
On another subject, the Buick had pushrod overhead valves back in 1908.
Do you remember the statistics 3 years after the Buick Grand National came out?
I remember some magazine claiming that 1/3 had been totaled and another 1/3 had been at least wrecked.
I don’t have any link, just something I remember talking about with my brother.
more than traction control.......stabililink and the pc is intergal to the motor and brakes..........literally in nano seconds an outta control wheel is brake applied automatically til the tire regains traction
OHV simply means the valves are on top. The means by which the valves are opened can be either Overhead cam (no pushrods) or in block cam via push rods.......
Ok your explanation makes perfect sense. So Overhead Cam means no pushrods.
So my next question - what information does OHV really convey? I mean way back when you had the “flathead” engines where I guess the valves were on the side???, but practically speaking, in today’s terms are any engines not OHV?
Traction control won’t make the difference. :)
“Still pushrod 1930’s technology”
I used to look down my nose at pushrod engines, but it’s hard to argue with them when they get the desired results. In the case of the domestic manufacturers’ V6 pushrod engines, they also mean that you can get a torquey V6 for what the imports charge for their 4-cyl.
My mistake; there were OHV engines before that, but they did not use high compression. The oldest design is side-valve. Still, like I said, there are advantages and disadvantages to each design. OHV can’t rev as high, but OHC is complicated and bulky.
overhead valving is not the biggest issue....by reloacting cams to the upper part of the cylinder heads push rods were replaced by cam lobes in direct location to the valves........also OHValving allowed a space to experiment with valve sizing...a plus
yes it is because of 14 hole lazer drilled injectors
OK so previous poster says that OHV is the opposite of side-valve. I guess the only engine I can think of that would match this would be the old flat-head designs. I can’t think of a modern engine that is side-valve - but maybe that’s just me.
They were in the block, to the inside of the piston, directly pushed up from the in block cam via lifters, solid or hydraulic. The cutout in the head was shaped like a silhouette of Mickey Mouse. Very low compression, like 6:1, so the overhead valve concept enabled higher compression ratios, and thus the need for higher grades of gasoline to prevent pre-ignition pings and knocks.... I>...but practically speaking, in today’s terms are any engines not OHV?
Lawnmowers...........
Got it. Thanks!
And I love every cubic inch of it.
imagine a 2x4 in your hand....a top / bottom and 2 sides
a typical 350 v8 chevy ( 1955 to 2004 ish)
had valves on the side and a horizontal action....when cams were installed in the heads,the luxury was putting the valves on top....in time valve size and number were the tricks to hp and gas mileage
the old days flathead or in-line six’s had valves on top
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