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post #1 of (permalink) Old 11-10-2002, 06:29 PM Thread Starter
 
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carb vs. injection well over 10000 feet

i know its jetting an timing, but if it was injected would that that be better? or would you have diffrent problems.
i took a 67 cj with a v6 in it an didnt have much trouble,then a couple a years latter i took a 76 7 with a i6 up the same little hill i made it but i did have a little trouble.
then i took the cj i have now a couple years ago with the 304 stock an it puked i mean i need 3 feet. i tinkerd for a wile then turned around went back down
what a wonderful fealing that is
my al. in sw kan is 2300 ft. can a injection vary that much if so witch one? or witch carb setup on a opened up 401

duke
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post #2 of (permalink) Old 11-11-2002, 06:57 AM Thread Starter
 
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Re: carb vs. injection well over 10000 feet

sombody outthere knows they have jeep ralleys on the same hills.
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post #3 of (permalink) Old 11-11-2002, 08:04 AM
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Re: carb vs. injection well over 10000 feet

That's the beauty of the ECM controlled injection system, it senses the amount of incoming air though the engine using MAF of MAP sensors. And then the O2 sensor in closed loop.

When they were using injection at the drag strip years ago, they had a shoe box full of injectors. If there were changes in temperature, humidity or barometric pressure, they had to change jets, that why that old Corvette system failed. With the computer and it's sensors, it makes the adjustments to compensate.

And where is it 2300 ft high in KS? I'm at 700..
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post #4 of (permalink) Old 11-11-2002, 02:36 PM
 
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Re: carb vs. injection well over 10000 feet

In situations like that, you want the optional altitude compensation sensor doo-hickey thing.

I know on some carbs depending on where they were sold, they had altitude compensation deals hooked up to them.

Fuel injection systems have the same things if you live in some place like Colorado.

Best regards

John
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post #5 of (permalink) Old 11-11-2002, 06:58 PM Thread Starter
 
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Re: carb vs. injection well over 10000 feet

it is over 2300 where i live you must be in eastern kan.
i went to the peak a few years ago an watch a guy go up in a sprint car he was 1st in his class, with hilborns he was useing he had a dial he tuned on the way up.that is why i though a computer would not ajust for that much diffrence
i was under the impression there was a high al. one an a sea level one.
i got a new carb that has a chart an you just change meter rods, but i think injection would be better but how much hp for the dollar?

duke
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