80tq: Opinions wanted

[JShadzi at aol.com]

I just recently upgraded to a 3B coil with no apparent differnece, I was going to test an MSD ignition booster but didn't have a chance to put it in.

Just standard HG and stretch bolts for the time being.

Javad

>I am by no means an expert, but my guess would be on the coil.
>
>From what I remember from my electrical classes in engineering school, through the alcohol soaked haze (and I'm a mech eng, so even less authority here), was that it is harder to pass a spark through air as the pressure gets higher.
>If your coil is weak, or gets too hot, it may be having problems sparking when boost is up (higher pressure).  I don't know what kind of coil you are running, or if it gets hot on the track, but that would be one of the places I would look.  Coils will also have trouble sometimes if they get too hot, so having more problems on the hotter day tends to make me think that is possible.
>  I don't see how a head gasket leak would cause something like that, unless it is pretty big, at which point I'd think you would be seeing other problems first.
>
>Are you running raceware studs or something similar, or standard head bolts? Just curious.
>
>Good Luck!
>Greg Roa
>Cincinnati, OH
>86' 4kcsq
>93' 90 CS
>83' 944
>
>>From: JShadzi at aol.com
>>To: quattro at audifans.com, s-car-list at audifans.com, urq at audifans.com
>>Subject: 80tq: Opinions wanted
>>
>>Ok, been a while since I came to the lists with a request like this, but I'=
>>m sorta stumped and really would like to get some ideas.
>>
>>The last few track events 80tq has been running really well for the most pa=
>>rt, but one problem has been cropping up causing some frustration:
>>
>>-After about 3 or 4 really hard laps a high RPM cutout will appear at certa=
>>in times, usually a certain turn or stretch of the track, the motor won't w=
>>ant to rev past 5k rpm or so, short shifting to the next gear alleviates th=
>>e condition until the next time it crops up.
>>
>>-When doing so fuel mixtures appear to be relatively stable and no pinging =
>>or knocking can be heard.
>>
>>-It also gets worse the higher the boost is, it really begins getting notic=
>>eable around 15psi boost.  At 16-17psi its livable, past 18-20psi it really=
>> becomes a problem so that after the first few laps the car isn't too drive=
>>able.
>>
>snip
>>
>>I have my own whole theory but I'd like to not share it as to not contamina=
>>te the responses, I'd love to hear what some of you think it is, this isn't=
>> some "trick" or "contest", I'm not exactly sure if my conclusion is valid,=
>> so hopefully your responses will confirm or redirect mine.
>>
>>Any responses are appreciated (well, unless they're really stupid), let me =
>>know if anyone wants more clues or info about it.
>>
>>Thanks,
>>
>>Javad Shadzi
>>80tq.com
>