- #4306 of 6098
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Re: Ultra V8 axed [mr215]
by lykourinou
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Jan 08, 2008 (6:53 pm)
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Replying to: mr215 (Jan 04, 2008 11:24 am)
I'm anxious to see a DOHC in an Escalade, they need to do away with that barbaric engine design
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- #4308 of 6098
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Re: CTS-v 09 [rayainsw]
by rockylee
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Jan 09, 2008 (2:36 am)
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Replying to: rayainsw (Jan 08, 2008 7:05 am)
WOW, this is my dream car !!!!  
The 2009' CTS-V is simpily the greatest automobile ever made at any price and is the standard of the world of all cars. OMG !!!!
-Rocky
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- #4309 of 6098
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Re: CTS-v 09 [rockylee]
by lykourinou
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Jan 09, 2008 (3:41 am)
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Replying to: rockylee (Jan 09, 2008 2:36 am)
the CTS V is a great vehicle for the price.
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- #4310 of 6098
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price ?? Re: CTS-v 09 [lykourinou]
by rayainsw
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Jan 09, 2008 (3:46 am)
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Replying to: lykourinou (Jan 09, 2008 3:41 am)
"the CTS V is a great vehicle for the price. "
I have only seen estimates ( MT says $62K base ) ... ??
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- #4311 of 6098
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Re: Ultra V8 axed [lykourinou]
by mr215
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Jan 09, 2008 (5:48 am)
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Replying to: lykourinou (Jan 08, 2008 6:53 pm)
nothing "barbaric" about the 6.2L V8. It outpowers the GL550 and almost everthing else in its class while getting equal fuel economy. OHV doesnt mean inferior, it just means its not an OHC engine. I think GM has proven over and over again that OHV engines are competitive. Funny that someone would criticize the Escalade's class leading engine just because its 2 valves/cylinder.
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- #4312 of 6098
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Re: price ?? Re: CTS-v 09 [rayainsw]
by mr215
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Jan 09, 2008 (5:50 am)
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Replying to: rayainsw (Jan 09, 2008 3:46 am)
obviously cadillac hasnt disclosed the price but its going to be well under the $82k price of the M5 and thats whats important here. I would think $65k is a realistic price for this car. Lexus is charging $60k for the IS-F and that only has 416hp.
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- #4313 of 6098
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Re: Ultra V8 axed [mr215]
by sls002
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Jan 09, 2008 (7:40 am)
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Replying to: mr215 (Jan 09, 2008 5:48 am)
It should be noted that OHC engines are also OHV designs. The basic advantage of a double OHC design is that the intake and exhaust valves can have independent variable timing. Most pushrod only have one intake and one exhaust valve which is a matter of design, but most OHC engines have multiple intake and exhaust valves. So, as I see it, the DOHC design has two basic advantages, while the pushrod design has the advantage of lower cost.
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- #4314 of 6098
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Re: Ultra V8 axed [sls002]
by mr215
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Jan 09, 2008 (7:47 am)
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Replying to: sls002 (Jan 09, 2008 7:40 am)
OHV engines with VVT cannot vary timing of intake and exhaust valves separately as you note. The advantages of OHV are cost, weight and size. In addition it's easier to deactivate cylinders in an OHV engine which is why only Honda does this on OHC motors. The escalades's engine has great power and torque and VVT. There isnt a better engine in a large luxury SUV. even Toyota's 5.7L has less power and torque and a lower redline while having no advantage in efficiency. Ranger rover's supercharged 4.2L only makes 390hp.
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- #4315 of 6098
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Re: Ultra V8 axed [sls002]
by bumpy
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Jan 09, 2008 (8:01 am)
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Replying to: sls002 (Jan 09, 2008 7:40 am)
OHCs also have less reciprocating mass in the valvetrain, which leads to lower NVH versus a conventional pushrod design.
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