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post #1 of 10 (permalink) Old 02-15-2010, 12:29 AM Thread Starter
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question

who all has 840's running stock carbs and what elevation are you at? cause im going to be getting an 840 and i ride at higher elevation 99% of the time, like 6000 feet to 10,000 feet. will the stock carbs even feed it or am i better of with a std bore?? any help will be appreciated
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post #2 of 10 (permalink) Old 02-15-2010, 06:07 AM
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I'm a std bore guy myself but your carbs will feed a 840 especially in high elevation where engines need to be leaned up.



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post #3 of 10 (permalink) Old 02-16-2010, 01:13 PM Thread Starter
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im hoping so cause i can get a 840 minus cam for $650 with jugs so thats the route i wanna go

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post #4 of 10 (permalink) Old 02-17-2010, 02:02 AM Thread Starter
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noone has a big bore at high altitude
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post #5 of 10 (permalink) Old 02-17-2010, 03:37 AM
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People run that way at lower elevation.
I would think elevation would make it easier, as typically you are jetted down there.
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post #6 of 10 (permalink) Old 02-17-2010, 08:02 PM Thread Starter
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Quote:
Originally Posted by DougS View Post
People run that way at lower elevation.
I would think elevation would make it easier, as typically you are jetted down there.
thanks for the info i guess most people ride low elv
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post #7 of 10 (permalink) Old 02-18-2010, 11:53 AM
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Quote:
Originally Posted by bigmo450 View Post
im hoping so cause i can get a 840 minus cam for $650 with jugs so thats the route i wanna go
We have a lot of guys in Ut,Co and Mt that run that high but they use the stage 2 cams for more torque.

Did you find out what pistons you are getting and how deep the valve pockets are? Also make sure you get the right head gaskets,you need bigger bore gaskets. 90MM.
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post #8 of 10 (permalink) Old 02-18-2010, 12:36 PM Thread Starter
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it will be the muzzy bottom end kit ill have port work and probably +1.5 or +2 valves just need to find if the valve pockets will work with a stg3 cam
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post #9 of 10 (permalink) Old 02-18-2010, 02:06 PM
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it will be the muzzy bottom end kit ill have port work and probably +1.5 or +2 valves just need to find if the valve pockets will work with a stg3 cam
I you mean it's Muzzys piston I have been told the valve pockets are not deep enough to run even my stage 2's let alone 3's. In fact they said the cams they were running it that kit were my old stage 1's that Web now sells #504 which made 5hp less then my 2's. I wouldn't spend money on port work if you are going to run that mild of a motor and you are not going big carbs.
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post #10 of 10 (permalink) Old 02-22-2010, 02:24 AM Thread Starter
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damn i can get some for a real good deal guess ill just have to save more
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