cincy 2k+4 photo collection request / hosting - update

[jason at scirocco.org (Jason)]

At 04:40 PM 6/11/2003, Patrick Bureau wrote:
>Oh Jason I was not taking it that way, but now you got me intrigued.

Cool. :)


>well if ya get all technical on me then you tell me...

I'll do my best...


>3.67 final gear tranny 9a. and I was at 6400RPM

K, that's a 3.67 R+P and an 0.89 5th.
With a stock tire size, 6400rpm would put you right at 210 km/h.  (Which is 
miraculously -- and admittedly completely coincidentally -- close to the 
211 I said in the last mail...)


>maybe I need to find a cop.... he can tell me... (grin) could be worth it...
>then again I could just get a dyno...

Yeah, the cop might not be such a good idea. <smirk>
But a dyno run is always the best way to know. :)

Okay, if your car actually topped out at 6400rpm in 5th / 210 km/h, we can 
estimate how much power you were putting to the ground (assuming, again, 
stock tire size and aerodynamics)...

Calculation:
You'd need about 1590N of force to the ground to combat that air and 
rolling resistance...  which would equal ~450Nm of force to your wheels, 
which would equal ~332 Lb-Ft of torque at your wheels, which would be about 
101.5 lb-ft of torque when reduced by your gearing.  101.5 lb-ft of torque 
at 6400rpm = 123.8 hp.

Result:
You'd need (very approximately) 124hp @ 6400rpm to the wheels to achieve 
210km/h in a Scirocco.
For comparison purposes, a stock 1.8 16V that puts 105hp to the wheels (at 
5750rpm) only puts down about 86hp at 6400rpm.   (And a stock 2.0 16V that 
puts 121hp to the wheels (at 5500rpm) only puts 105hp down at 6400rpm.

So my guess is that your 2.0 is running a very aggressive cam, no?
Jason




>Jason <jason@scirocco.org> wrote:
>At 11:55 AM 6/11/2003, ATS - Patrick Bureau wrote:
> >what do you mean innacurate.. ?
> >chasing that GSR was not a peice of cake and we were flying on the 
> road.. :)
>Oh I don't doubt that you were flying.. :)
>
>224 km/h in a Scirocco (Cd=0.38, A=1.68m^2) is a very tough number to
>achieve, though. To hit it, you would have to put just a hair over 150hp
>to the wheels at that speed, which with a 3.94 R+P and an 0.80 5th gear
>(for example), would be ~6700rpm.
>
>Not that I haven't heard from many sources that your car is fast as shit,
>but my guess is that the Kamei kit turns your Cd into more like 0.40 or
>0.42, which would increase that number somewhat more.
>
>To my recollection, I've only seen a dyno result of a naturally aspirated
>4-cylinder VW over 150whp once, and that was Brett. (Forgive me if there
>are more of you out there -- I think Riley McDowall and Shannon Fenton may
>have been around the 150 mark, too)...
>
>Brett peaked at 150.8whp @ 6750rpm... With his 3.89 R+P and 0.75 5th, he
>should see a top speed of 221 km/h (137mph). [An 0.80 5th would,
>coincidentally, bump that number up to 224 km/h... The increase self
>evident, of course, because as I said above, that speed would almost
>exactly coincide with his HP peak]
>
>Either case, German auto makers generally build in 5-7% positive error in
>their speedometers... (Under German law, they can have between 0 and 7%
>positive error, but no negative error.) They all do it - BMW is notorious
>for ridiculous error at high speeds. An indicated 224 was probably
>actually around 211km/h, or 131mph... which is a FANTASTIC achievement in
>any Scirocco... much less an 8V, which likely has its power peak below that
>of a cammed 16V like Brett's. (And had a stock top speed of around 180 km/h!)
>
>Not attacking your car at _all_ -- like I said, I heard from a number of
>people this weekend that your car was brutally fast!
>
>Jason
>
>
>
>
>
>
>
>
>
> >ATS - Patrick Bureau - txrocco@sbcglobal.net
> >Http://www.longcoeur.com/scirocco/
> >============================================
> >'85 2.0L Prowler Orange Kamei X1 Rocco
> >'85 1.8L Titian Red Rocco (daily driver)
> >'98 4.0L Jeep Cherokee
> >'91 7.3L F250 diesel Super cab,8 Ft box.
> >
> >
> >
> >=>-----Original Message------
> >=>From: Jason Cammisa [mailto:jcammisa@alwaysonline.net]
> >=>Sent: Wednesday, June 11, 2003 9:56 AM
> >=>To: ATS - Patrick Bureau; Ken B; scirocco list
> >=>Subject: RE: cincy 2k+4 photo collection request / hosting - update
> >=>
> >=>
> >=>At 10:45 AM 6/11/2003, ATS - Patrick Bureau wrote:
> >=>>yeah that is like almost 90 or close to it... I should of taken pictures
> >=>>when I was doing 224KPH the other day...nice round number on a digifiz I
> >=>>tell you...
> >=>--0-1338643187-1055364022=:48503--