Re: dynoed a 2008cc motor

[16v Jason <jason@scirocco.org>]

Hang on, though-- you did a lot more than just put on a 2.25" 
exhaust.  Downpipes can create huge power gains, and knocking off the A/C 
compressor and the PS pump will give you quite a few extra HP just from 
reducing drag on the belts.  I read a while back (don't know where, so I 
shouldn't even be quoting), but an A/C Compressor (turned OFF) can rob 
2-5hp at the power peak.  Ditto the P/S pump.  So my bet is you gained 5hp 
total by lopping those off, and probably 12 from the downpipe and exhaust 
combo.  Putting a 2.25" cat-back exhaust on a car with 2.125" header tubing 
does squat.

Jason



At 08:48 PM 4/20/2000 , UrGTI@aol.com wrote:
>I would dissagree at least in my cars particular application .
>
>I have a bone stock unknown mileage 2.0 16v that came out of a Passat that
>was burned to a crisp . I did remove the AC and Power steering but did keep
>the heavy pully on the crank cause I couldnt find a light one right away .
>Now the only thing done is  a TT 2" race downpipe and 2.25 exhaust .
>Dyno results are 126 to the wheels , now using the formula Jonas gave it
>comes to about 151 HP to the crank .
>  Seventeen HP does seem high but I will say we ran several cars that day and
>the stock ones were within 10% of manufactures specs so there was some gain I
>know for sure .
>
>Jasin
>more to come in the "S"
>
>--
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1987 Scirocco 16v
1989 Mercedes 190E Sport Euro


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