Mark.Peele: Re: Exhaust Problem

[mark.peele@juno.com (Mark A. Peele)]

oops,  i meant to post that here!
 . . . Mark
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--------- Begin forwarded message ----------
From: Mark.Peele
To: btpeet@effervescent.com
Subject: Re: Exhaust Problem
Date: Mon, 22 Sep 1997 08:01:58 +0100
Message-ID: <19970922.080705.3662.0.Mark.Peele@juno.com>
References: <01BCC6D5.240CBEC0.btpeet@effervescent.com>

The base 85-87 (88?) Golf/Jetta/Fox 1.8's (code GX) had 38mm inlet valves
vs the 40mm "GTI" heads used on the scirroccos and cabrios of that period
- hence hp diff.

obviously the 10:01 knock sensor equiped 1.8 on the 8v GTi and GT are
another story . . . 

By the way the 77 Scirocco (U.S. 1.6) had 82hp, yet every chart (EC)
shows it as 78hp.
I know 82 is correct.

 . . . Mark
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On Sun, 21 Sep 1997 21:27:18 -0700 Bradley Peet <btpeet@effervescent.com>
writes:
>Most 1983-1987 1.8 liters sold in the US make 85 (base model Golf, 
>Jetta, 
>Fox) or 90 hp (Scirocco) depending on the emission equipment and the 
>exact 
>model of car.  I believe the Digifant equipped 1.8 liter engines in 
>1988 and 
>up make 100 hp, again it depends on the model (the exhaust system in 
>particular).  Don't some of the later 1.8 GTI/GLI engines put out 105 
>hp 
>stock?
>
>Anyway... my main point is that the formula for horsepower has NOTHING 
>to do 
>with bore and stroke.  That's displacement you're thinking of.  For an 
>actual 
>horsepower figure, you need to know the torque at a given RPM.  That's 
>how 
>dyno's work, by directly or indirectly measuring torque.  The formula 
>for HP 
>is:
>
>HP = RPM x Torque (ft-lbs) / 5252
>
>Class dismissed. :)
>
>-Bradley
>1986 Scirocco 16V 2.0 liter, Quaife, mods, mods, etc., etc.
>1987 Quantum Wagon Syncro FOR SALE now.
>http://effervescent.com/btp/vw.html
>
>On Sunday, September 21, 1997 8:07 PM, Iain Mannix 
>[SMTP:mannix@privatei.com] 
>wrote:
>> >>8Vs from late 84 and on had 94hp.
>> >>
>> >>Ilias
>> >>--
>> >Nope, it is simply untrue. I am unsure of how you are calculating 
>your
>> >horsepower, (bore x stroke x ?)but my '87 Rocco has 90hp. At least 
>that is
>> >what it said in the manual.
>> >Regards,
>> >Paul Hanley
>>
>> I sorta wondered about this the first time around - I'd never heard 
>such a
>> rumor, either, but then again, I'd never paid attention to the 84 & 
>up
>> Scirocco numbers.  AFAIK, all the 8.5:1 JH engines made 90hp.  ???
>
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