[T2] Carbs and change if altitude

[Jim Denton]

Advance you timing about 1° for every thousand feet above 4000'.  This will
compensate somewhat for the elevation gain. Your engine will run richer as
it goes up which will make up for a little of the power loss as well. If
too rich then you could lean it back up, but that would be a lot of work to
do every trip.

If you live at higher elevations then a bigger engine with higher
compression is the way to go.  Adding a turbo would be another option.

On Sun, Mar 29, 2015 at 6:52 AM, Bob Perring <perring at roadrunner.com> wrote:

> My 1600 single port has crossed the great divide probably 2 dozen times,
> or more.
> Advance the timing so that ignition starts earlier, and you regain much of
> your power.
> Never had to mess with the carburetor, but it was always necessary to
> advance the timing in order to gain lost power back due to altitude.
>
> Another tip is to turn the radio off and leave your window down so you can
> hear pinging in case you advanced too far.
>
> On a couple of cold and damp Alaska high altitude moments,
> and under similar conditions up around Mt. Rainier, I experienced
> carburetor icing.
>
> The solution for that was to make a pot of coffee and let the engine heat
> soak into the system while I was brewing.
> Problem solved.
>
> Bob
> ============================
>
>
>
> At 07:32 3/29/2015, Avocado Tom Tarka wrote:
>
>> Richard,
>>
>> I had similar experiences a few years ago in Colorado and I'm interested
>> to hear what other Volks come back with.
>>
>> I know that the Idiot book has guidelines for high altitude operation - I
>> think it involves advancing the timing - and presumably one could readjust
>> you carb and/or use a bigger air correction jet, too.
>>
>> Cheers,
>>    Tom
>>
>> ----
>>  "We are MoTown. We are professionals. We're here to get the job done."
>>
>> > On Mar 26, 2015, at 6:35 PM, Greenhouse guy <greenhouseguy806 at yahoo.com>
>> wrote:
>> >
>> > I have a 1600 DP, in my bus.  I live in Texas at a altitude of 3200
>> ft.  Question is what do/can it do when traveling to higher altitudes, such
>> as 8000ft?  I lose a lot of power up in the mountains.  Back when I had my
>> stock 1800 with stock dual carbs(before I burned it up), I was in the
>> mountains and could barely pull out on the highway in town.   Do I adjust
>> timing?  Adjust the carb?
>> > I'm considering building up my original 1800 type 4 motor and adding
>> FI, but that all is pricey.
>> >
>> > Richard
>> > Lubbock, Texas
>> > 1974 Westy
>> >
>> >
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