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Old 03-30-2009, 02:46 PM   #1
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Default hyper 21 tuning help

i got my hyper 21 all broke in and it runs great, but i dont think it's tuned as good as it can be, it cuts out when i hit the gas after it comes to an idle, and when it idles it kinda of revs up and down. it also doesnt have that clean linear sound, it kind of sounds like a small muscle car, this is my first big block and i'm not sure how it should sound, any ideas on how it should be tuned.
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Old 03-30-2009, 04:33 PM   #2
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Quote:
Originally Posted by murdermode View Post
i got my hyper 21 all broke in and it runs great, but i dont think it's tuned as good as it can be, it cuts out when i hit the gas after it comes to an idle, and when it idles it kinda of revs up and down. it also doesnt have that clean linear sound, it kind of sounds like a small muscle car, this is my first big block and i'm not sure how it should sound, any ideas on how it should be tuned.

Its still too rich..start it let it warm up, and then turn the HSN (top screw)
1/8 at a time Clockwise then do more high speed passes, then repeat until its crisp and sharp and good response. Bottom end should be about 2 turns out from flush
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Old 03-30-2009, 05:49 PM   #3
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ok i did that, now when it idles it revs way up after about 15 seconds and the temp jumps to like 330 is my LSN to lean?
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HPI MT2 G3.0
OFNA Hyper 7
LOSI 1/18 Mini Desert Truck
Nothing for on-road, all we have out here is grass and cornfields.
Now i just need to find a track so i can race!
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Old 03-30-2009, 06:08 PM   #4
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yes..i gave you detailed tuning via PM's when you asked...make sure you have smoke!!! Its really hard to tune On-line, but I'm trying here
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Old 04-01-2009, 09:36 AM   #5
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hey jaz240, do u mind sending me the detailed tuning u send to murdermode??
My hyper 21 had the same idles problem. thanks !
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