80tq: Opinions wanted

[Aaron Gibson]

--
[ Picked text/plain from multipart/alternative ]
Hey Javad,

Paul and I had a similiar problem with the 20V turbo rally car. We added
an MSD booster to the ignition system and the problem went away. We also
use a different spark plug...uh....Nippon Denso as I recall. We never
noticed the problem
during normal rally conditions, but when we did hillclimbs it was really
noticable. I would guess that track and hillclimb events
would have very similiar conditions.

Regards,
Aaron



JShadzi at aol.com wrote:

>I just recently upgraded to a 3B coil with no apparent differnece, I was g=
oing 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, th=
rough the alcohol soaked haze (and I'm a mech eng, so even less authority h=
ere), was that it is harder to pass a spark through air as the pressure get=
s 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 ar=
e running, or if it gets hot on the track, but that would be one of the pla=
ces I would look.  Coils will also have trouble sometimes if they get too h=
ot, so having more problems on the hotter day tends to make me think that i=
s possible.
>> I don't see how a head gasket leak would cause something like that, unle=
ss it is pretty big, at which point I'd think you would be seeing other pro=
blems first.
>>
>>Are you running raceware studs or something similar, or standard head bol=
ts? 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'=3D
>>>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=3D
>>>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 ce=
rta=3D
>>>in times, usually a certain turn or stretch of the track, the motor won'=
t w=3D
>>>ant to rev past 5k rpm or so, short shifting to the next gear alleviates=
 th=3D
>>>e condition until the next time it crops up.
>>>
>>>-When doing so fuel mixtures appear to be relatively stable and no pingi=
ng =3D
>>>or knocking can be heard.
>>>
>>>-It also gets worse the higher the boost is, it really begins getting no=
tic=3D
>>>eable around 15psi boost.  At 16-17psi its livable, past 18-20psi it rea=
lly=3D
>>>becomes a problem so that after the first few laps the car isn't too dri=
ve=3D
>>>able.
>>>
>>>
>>>
>>snip
>>
>>
>>>I have my own whole theory but I'd like to not share it as to not contam=
ina=3D
>>>te the responses, I'd love to hear what some of you think it is, this is=
n't=3D
>>>some "trick" or "contest", I'm not exactly sure if my conclusion is vali=
d,=3D
>>>so hopefully your responses will confirm or redirect mine.
>>>
>>>Any responses are appreciated (well, unless they're really stupid), let =
me =3D
>>>know if anyone wants more clues or info about it.
>>>
>>>Thanks,
>>>
>>>Javad Shadzi
>>>80tq.com
>>>
>>>
>
>
>

--