Performance tip for throttle body?

[Larry C Leung]

That car had the larger TB too.

On Wed, 19 Dec 2001 21:52:50 -0500 "Rave Racer" <Ravewar at rogers.com>
writes:
>
>    I didn't have enough research on it, so I didn't do it.  The one I
>drove
>was an 85 8V Golf.  The change in the power might be attributed to the
>age
>of the car.
>
>       Rave Racer
>'89 Jetta 1.8L 16V GTX
> http://www.vwot.org/members/Pete.html
>'87 Audi 4000 Quattro Sedan
> http://www.audifans.com/registry/view.php?action=viewCar&carid=110
>'72 Triumph GT6
> http://motorcities.com/contents/01I3H011116682.html
>'83 Toyota Tercel (yoda)     Possible future Sandrail donor...  Maybe
>----- Original Message -----
>From: Larry C Leung <l.leung at juno.com>
>To: <Ravewar at rogers.com>
>Cc: <mannix at rmsolo.org>; <ricematthews at msn.com>;
><quattro at audifans.com>
>Sent: Wednesday, December 19, 2001 6:24 PM
>Subject: Re: Performance tip for throttle body?
>
>
>Your 16V Jetta already had the bigger bore TB.
>
>LL - NY
>
>On Tue, 18 Dec 2001 21:47:32 -0500 "Rave Racer" <Ravewar at rogers.com>
>writes:
>>
>>    When I had my 16V Jetta the rumor was the TB from a 5000 would
>fit
>>and
>>was had  bigger bore.  I never tried it but I drove one that was
>>rumored to
>>have it.  Unfortunately I couldn't verify it, but I did find that it
>>had
>>quicker pickup in the lower revs.  I would guess that it just moved
>>the
>>functional power to a different part of the rev range.
>>
>>       Rave Racer
>>'89 Jetta 1.8L 16V GTX
>> http://www.vwot.org/members/Pete.html
>>'87 Audi 4000 Quattro Sedan
>> http://www.audifans.com/registry/view.php?action=viewCar&carid=110
>>'72 Triumph GT6
>> http://motorcities.com/contents/01I3H011116682.html
>>'83 Toyota Tercel (yoda)     Possible future Sandrail donor...
>Maybe
>>
>>----- Original Message -----
>>From: Iain Mannix <mannix at rmsolo.org>
>>To: <JShadzi at aol.com>
>>Cc: <ricematthews at msn.com>; <quattro at audifans.com>
>>Sent: Tuesday, December 18, 2001 11:10 AM
>>Subject: Re: Performance tip for throttle body?
>>
>>
>>Exactly.  And, from what he's saying, it sounds like he's doing
>>this to a non-turbo, Golf-esque TB - if you put that screw in like
>>he's talking about, the secondary will not open fully unless you
>>grind away the aluminium stop on the tb casting.
>>
>>I've played with this, and it does _feel_ better, in some ways, but
>>it does not increase airflow into the engine - and without grinding
>>the stop/allowing the secondary to open fully, it probably
>>loses(kinda
>>has to) some high end power.
>>
>>100hp?  Not a chance.  -3hp?  Probably.
>>
>>
>>Iain Mannix(kinda like the old Weber Big Throat for VWs - they
>>feel monstrous on tip-in, but in reality, they're no faster, just
>>harder to modulate...)
>>
>>On Tue, 18 Dec 2001 JShadzi at aol.com wrote:
>>
>>> Ok, this guy is really confused, 100hp by opening the same
>throttle
>>body a
>>> little sooner???  Its not like airflow into the motor is
>increasing,
>>the
>>> final WOT condition is exactly the same.  What he is doing is
>>basically
>>> re-calibrating the throttle cam on the throttle body to open the
>TB
>>more,
>>> sooner, but not actually open it more overall.  He is feeling that
>>what
>>used
>>> to be 1/2 distance travel with the "gas pedal" is now at 1/4
>>travel.
>>>
>>> If you do this, you will make the on-off throttle transition more
>>sharp,
>>and
>>> inevitably, more jerky.  Everytime you get back on the gas the car
>>will
>>lurch
>>> and the motor will snap back and forth on its mounts, not very
>>pleasant
>>IMO.
>>>
>>> Anyway, you can try it, but its not worth even 1hp.
>>>
>>> Javad
>>> 80tq.com
>>>
>>> In a message dated 12/18/2001 12:24:58 AM Pacific Standard Time,
>>> ricematthews at msn.com writes:
>>>
>>> << Has anyone out there heard of the below described performance
>>tip?  I
>>saw
>>>  this on the site www.grandtouring.com and wondered if this had
>any
>>merit.
>>>  Thanks,
>>>  Mark
>>>
>>>  "I WOULD LIKE TO SHARE A TIP WITH AUDI ENTHUSIASTS WHO LOVE THE
>>EXTRA
>>POWER
>>>  WHEN THE SECOND LARGER THROTTLE KICKS IN. PICK UP A SCREW AT THE
>>HARDWARE
>>>  STORE FOR 5 CENTS THAT HAS A 5/16" OR 3/8" WIDE CAP WITH A SCREW
>>LENGTH
>>OF
>>>  ABOUT 1/2" AND DROP IT INTO THE SLOT ON TOP OF THE THROTTLE
>LINKAGE
>>WHERE
>>A
>>>  SMALL PIECE OF METAL HAS TO TRAVEL ABOUT 3/8" BEFORE IT HITS THE
>>SECOND
>>>  THROTTLE ARM. BY BRIDGING THIS GAP WITH THIS SCREW THE LARGE AND
>>SMALL
>>>  THROTTLE S OPEN IMMEDIATELY WHEN YOU GIVE IT GAS AND FEELS LIKE
>>ABOUT 200
>>>  HP. I DONT FIND CHANGE IN GAS MILEAGE BUT THE CRUISE CONTROL IS
>NOT
>>AS
>>>  SMOOTH AS IT SURGES SLIGHTLY AND ON LONG TRIPS I JUST POP THE
>HOOD
>>AND
>>PULL
>>>  IT OUT AND PUT IT BACK IN THE CITY. WITH THE SMALLER 5/16" SCREW
>I
>>DO NOT
>>>  FIND IT A PROBLEM ONLY WITH THE 3/8" WIDE CAP SCREW. THE
>DIFFERENCE
>>IS
>>>  UNBELIEVABLE 100 HORSEPOWER FOR 5 CENTS.DOESNOT WORK FOR SOME
>TURBO
>>AUDI
>>>  MODELS WHICH HAVE NO GAP TO PUT THE SCREW AS IT HAVES DIFFERENT
>>LINKAGE"
>>>   >>
>>>
>>
>>
>