More on the 16V "quest for fast"

[marc_scirocco at sympatico.ca (Mtl-Marc)]

Did you check the compression?

A vacuum gauge is also neat to see if the internals are doing ok.

Just a thought.

Marc 

> -----Message d'origine-----
> De : C Boyko [mailto:roccit_53@xxxxxxxxxxxxxxxxxxxxxxx] 
> Envoy? : 19 juillet 2007 10:54
> ? : scirocco-l@xxxxxxxxxxxx
> Objet : More on the 16V "quest for fast"
> 
> Thanks to those who sent replies to the previous post on this 
> topic. This is on my 2L 16V. I ended up not touching the 
> airflow plate, as reading the correct section for CIS-E (not 
> CIS) indicates that the plate can rest a bit below the bottom 
> of the venturi cone. And the car starts fine.
> 
> Other suggestions that did not impact anything: 
> -it's not a clogged cat, since there isn't one -I did change 
> plugs, from Bosch Silber single electrodes to the dealer 
> spec'd ones, which are NGK triples. I've never found plugs to 
> make much difference.
> -Cam chain- I did not check this, the chain was new when the 
> head was rebuilt five or so years back. I think it's not 
> likely to be worn, maybe I'm wrong?
> -bad fuel- filled up and added some octane booster since we 
> can only get 91. Maybe a bit better.
> -ignition module - have yet to dig another one out.
> 
> Okay, here's what the car feels like. It idles and runs 
> smoothly, no missing/buckiing/stumbling. To me, this rules 
> out fuel distributor issues, and maybe even injector spray 
> issues. Also, I reset the ignition timing (retarded it a few 
> degrees) to where I think 6* should be at, viewing the mark 
> as squarely as possible with all the crap in the way. No difference.
> 
> Anyway, the car just feels like it's doubled its weight. Just 
> slow to move forward. Makes a lot of nice noise, but it's 
> going nowhere. Once in a while it'll act like its old self, 
> but it's just not the tire smoking screamer it was. Most 
> people would be perfectly happy with it, but I'm not most people.
> I'm not giving up till it is faster.
> 
> So to me, that suggests something beyond the engine, (though 
> retarded ignition/overly rich could do this too, right?) 
> since it seems to be running well enough. So what resisting 
> forces might that suggest? I checked brake disc temp after a 
> nice highway run, nothing scary there, and I don't hear 
> anything/smell anything, though once or twice in a maybe 50 
> mile run there was a machining sound, a subtle, high pitched 
> whine, which I wasn't too thrilled with. Only at speed, only 
> on load. Speed dependant I'd say. It went away though. (It's 
> not diff rivets, those too are history) That sounds 
> brake-like, right? Application of brakes did not make a 
> difference though, but pushing in the clutch did I think.
> Would something like a failing PS pump cause drag? Or is it 
> just the start of a clutch failure? This one's lost it's snap 
> and is acting like a stock clutch, it's a level 2 Bully, and 
> has been abused for two (or 3?) seasons now; used to be a 
> very off/on clutch. I don't smell anything, and it seems to 
> pull as well at the torque peak as anywhere else in the 
> range, usually they begin to slip around 4500 rpm on this car 
> when they're at the end of their lifespan.
> 
> What am I missing???? It just feels like I'm towing a second 
> car behind this thing, that's the best way to describe it. I 
> DID check the rearview...
> cathy
> 
> 
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