[Fot] Weber DCOE 40's on TR6

[Bob Kramer]

Speaking of O2 gauges/sensors. I recently bought an AEM gauge and was
pulling my hair out trying to get it to work.  I went to the forums on the
Interweb and found out that the sensors AEM sends out have a high defective
rate. I also learned about the "rag test"  If the gauge doesn't work pull
the sensor and wrap the end in a rag soaked with brake cleaner and see if
it reads rich. This test proved my new oxygen sensor was bad. New sensor,
13.7 at idle, fun to watch it go up and down but I still check my tailpipe
for grey residue.

Bob Kramer


On Wed, Aug 19, 2020 at 10:06 AM Rick Parent via Fot <fot at autox.team.net>
wrote:

> Hi Bob,
>
> There is no magic setup so just tune accordingly. If you do not have an
> off idle hesitation now but one appears when you install the 30's you have
> gone too far, try 29's. If you do not have a o2 sensor you will be dead in
> the water and just guessing at your jetting. You main signal strength will
> decrease when you install larger chokes therefore you most likely will have
> to go down on the air corrector or up on the mains or both.
>
>
> "Doing the right thing is always the right thing to do regardless of the
> consequences"
>
>
>
>
> On Wednesday, August 19, 2020, 09:51:36 AM EDT, Robert Lang via Fot <
> fot at autox.team.net> wrote:
>
>
> Hi,
>
> I poked around in the archives and found a few TR6 references with Weber
> jetting, but for the most part the references fail to mention the choke
> tubes for the setups.
>
> I've been running 28mm chokes since forever and was looking to swap in
> some 30mm chokes but I may have to do the swap without access to a dyno.
>
> So, the question is: if you change to different choke tubes, do you need
> to re-jet? I know the answer is yes, but I'd like to see some examples for
> folks that have done this (change from 28's to 30's or similar).
>
> If you don't want to share setups on the list, I understand, but I figured
> in the interest of science, some real references would help establish a
> baseline. And yes, I know how small changes in the jetting can pay
> dividends. I've seen 7 or 8 HP gains playing with air correctors!
>
> Feel free to respond off list.
>
> Regards,
> Bob Lang
> 339-927-4489
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