High altitude jetting - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 06-03-2004, 03:13 PM Thread Starter
 
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High altitude jetting

I live in Florida and I am planning to take two Zuks to ride the mountains in Colorado and Moab.

One of the Zuks is an 88 carburated 1.3 stock.

The other one has an 85 carburated RX-7 12A Rotary engine in it.

The other question is, will I even need to rejet either Zuk. I know the performance will suffer, however, can I get by without doing it and still saftley do the steep climbs?

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post #2 of (permalink) Old 06-03-2004, 05:29 PM
 
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Re: High altitude jetting

I don't know if the Zuks were jetted for altitude or not.
I bought my '88 new here in the Springs (6000 ft), have never had any altitude problems other than 1 instance of
vapor lock on Engineer Pass (13000 + ft)
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post #3 of (permalink) Old 06-03-2004, 06:15 PM Thread Starter
 
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Re: High altitude jetting

Thanks for the response.
Engineer, Black Bear, and Imogene are the passes I will need to cross. I will be staying in Ouray so I wonít be going lower than 7,000 feet and will cross passes at 14,000. I have ridden this area many times on motorcycles and ATVs but I have never wheeled them in a Jeep or Zuk. The motorcycles have to be rejetted to have any performance.

Iím sure if you bought your Zuk in Colorado Springs it was jetted for that altitude. Mine are jetted for sea level. I did have one of my carbureted tow vehicles vapor lock when I started getting into the mountains pulling a load. Since they have gone to fuel injection I havenít experienced that problem.
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