Re: Nissan Z, step aside

"Scott in SoCal" <scottenaztlan@[EMAIL PROTECTED]
> wrote in message 
news:jnv4i3l35tqlbj99in1tl90horctqsjo7v@[EMAIL PROTECTED]
> On Fri, 26 Oct 2007 22:31:51 GMT, still me <wheeledBob@[EMAIL PROTECTED]
>
> wrote:
>
>>Most turbo's today blow heavy by about 2K RPM, so it's really not
>>"higher revs" anymore. Once you are off the line, it's cranking. I
>>have to admit, it took me over a year to figure out how to have it
>>blowing as you take off.
>
> By brake-torquing it? :)

No.


>>Back to your question "is it worth the hassle?". Traditionally, the
>>turbo will get better mileage than the non-turbo for the same amount
>>of power as it is more efficient.
>
> Then turbos are different than belt-driven superchargers. My 2003
> Cobra had a 4.6L engine with a Roots supercharger, and its gas mileage
> sucked so bad I had to pay a $1000 Gas Guzzler Tax when I bought it.
> The fuel economy was MUCH worse than the normally-aspirated 4.6L
> engine in my previous Cobra (or in the Mustang GT).

Yes.

>>Also, they aren't really very complicated. Every car is already fuel
>>injected and run by a computer metering fuel and/or air these days.
>>Engine controls throw feedback to the computer and it adjusts. Same
>>old thing. The turbo system just adds a little plumbing and a couple
>>more controls. It's actually very simple and easy to get your hands
>>around.
>
> All right, you've convinced me to not dismiss a turbocharged car
> out-of-hand.
>
>>I think the real draw is the incredible torque in mid to upper range.
>>With most NA engines I've driven, they can pull pretty hard but the
>>pull is fairly straight then it drops off. With the turbo, as boost
>>builds, the pull just starts increasing as the boost builds, like an
>>invisible hand pu****ng you along.
>
> Kinda like a Honda VTEC engine. :)

Somewhat.

>>I don't think any designs have used that since the mid-90's, but I'm
>>no industry expert. Synthetic oil has made a big difference as dino
>>oil will coke up turbo bearings at shutoff. Previously, turbos guys
>>would let the engine idle for a little bit when pulling in to let the
>>turbo cool. I haven't heard of that being an issue in any recent model
>>turbos.
>
> Good to know. Thanks for the info!

Enjoy your chevy.


Dustin