Guess who joined the 2L club? [Dyno: 1.8 vs 2.0]

[jason at scirocco.org (Jason)]

At 06:54 AM 10/15/2003, Julie Macfarlane wrote:
>Jason do you have a duno of the 1.8 and the 2L I could see? I would love 
>to compare them.


Sure -- anything for you guys. :)

http://www.scirocco16v.org/dyno/2-0%20vs%201-8.jpg

What you'll see is that just off idle (ahem 1500rpm, Larry), the 2.0 puts 
down about 103 lb-ft of torque; the same as the 1.8 puts out at its peak.

These curves are both from my car.  They use the exact same fuel injection 
system, manifolds, exhaust, computers... everything.  I literally did 
nothing but pull the block and head off and replace them...  thus any 
differences are attributable directly to the engine and not any other mods 
or tuning.

At high revs, the 2.0's advantage begins to wane.  That's to be expected; 
even with the same head as a 1.8, it's got 10% more air to move in and out 
of those cylinders.  That breathing difficulty is easily solved with the 
addition of a cam.  Which, coincidentally, I will be demonstrating on a 
dyno this Saturday.  [I hope!]


Jason







>Julie Macfarlane
>Menlo Park Research & Development
>Internet Application Developer
>www.menloparkrandd.com
>www.montgomeryweb.org
>Amsterdam NY
>
>
>
>
>
>>From: "T. Reed" <treed2@u.washington.edu>
>>To: Jason <jason@scirocco.org>
>>CC: scirocco-l@scirocco.org
>>Subject: Re: Guess who joined the 2L club?
>>Date: Tue, 14 Oct 2003 22:35:51 -0700 (PDT)
>>
>> > Remember that the 2.0 makes more torque off idle than the 1.8 does at its
>> > peak.  There is a huge difference in drivability... the 2L is just a much
>>
>>Eh-whaaa?? Are you sure about this? Last time I checked the 2l torque peak
>>was ~132hp at ~4000 rpm while the 1.8l torque peak was ~123hp at ~4250
>>rpm. Yes, the powerband of the 2l is much broader but I can't see it
>>making 123hp at idle!! That would kick ass, though!
>>
>>-Toby
>>
>> >
>> > Congrats!
>> > Jason
>> >
>>
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