[s-cars] 80tq: 20v Project Update, 415whp, 12.25, etc

Mark Strangways Strangconst at rogers.com
Thu Nov 11 18:33:58 EST 2004


Add another data point..
Some one pull their high HP motor already and put it on a engine dyno.
I would love to see a comparison that way.

I would also love to know if a 200 WHP engine losses the same drivetrain and 
friction losses thru the drive line as a 400 WHP.
I really wonder if using a percentage to approximate driveline loss is 
really the way to go.

Mark S
----- Original Message ----- 
From: <JShadzi at aol.com>
To: <Djdawson2 at aol.com>; <QSHIPQ at aol.com>; <jbufkin at austin.rr.com>; 
<s-car-list at audifans.com>
Sent: Thursday, November 11, 2004 2:25 PM
Subject: Re: [s-cars] 80tq: 20v Project Update, 415whp, 12.25, etc


> Hey Dave,
>
> Javad Said:
>>... but allowing the turbo to flow more
>> air to avoid the surge or overspeed line. Altitude can have the same 
>> effect.
>
> I don't know what turbo you're running, I didn't mean to imply that _you, 
> specifically_ were benefitting, that's why I said "surge or overspeed 
> line" implying that generally, it could go either way depending on the 
> size of the turbo.
>
> Agreed on all the "estimations", it will be very interesting to do a 
> baseline at elevation and sea-level, don't necessarily want to wager money 
> on it  ;)  , but it would be a great data-point to add to the information 
> database, as I hope that I've done with my documentation.
>
> Thanks,
> Javad
>
>
>>Interesting... so not only are our cars getting the benefit of 
>>overcorrection
>>on the dynos, but the altitude is helping our turbos perform better??? 
>>C'mon
>>guys, give me a break. Review your maps. To run at the PR that we're
>>running (denominator is lower... therefore, PR is higher at altitude) 
>>we're crossing
>>the top of the map... certainly no improvement WRT compressor efficiency.
>>Let me know an acceptable sea level dyno, and I'll go give it a try.
>>Dave
>>
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