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Todd Bellew
Joined: 26 Jul 2001
Posts: 2902
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 Posted: Sat Feb 13, 2010 9:03 am Post subject: |
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Of all the questions you had what fuel is the most important right now for you. 92 Octane gas isn't going to get it. 98 is safe but you can get away with a little less but not much.
The reason a kart takes more octane is load. A kart engine sees a huge load compared to the MX engine.
A stock engine with proper octane will never detonate. If you get the jet too lean it will simply melt.
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Todd Bellew |
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John Denman
Joined: 19 Jul 2001
Posts: 4846
Location: United States, Texas, McKinney
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| Posted: Sat Feb 13, 2010 12:00 pm Post subject: |
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| Todd Bellew wrote: |
The reason a kart takes more octane is load. A kart engine sees a huge load compared to the MX engine.
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Reading this makes me miss the mountains of NC even more. Before we moved to Texas and raced karts we did quite a bit of MX riding including climbing long steep grades. There were a few trails with wide open throttle up steep grades with 2 minute bursts between letting off. Probably not many of those in Indiana, certainly none of them in the Dallas area either. I never had a problem running premo pump fuel in the bike and usually ran 32:1 oil. Of course I never bothered to jet it on the edge either so on some of the longer climbs it started to get a bit fat.
Hope you're doing well Todd. Oh and the mayor of Dallas called, wanted you to take your snow back to Indiana. We got about a foot yesterday.
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John Denman
Producer for RTMP
http://www.kartweb.com |
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Mike Kellum
Joined: 25 Feb 2004
Posts: 2215
Location: United States, Oklahoma, Moore
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| Posted: Sat Feb 13, 2010 4:54 pm Post subject: |
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| Spencer Uzri wrote: |
Thanks for the clarification. Would a detonation counter be a worthwhile investment, & if so do you know of one that can interface w/ a Mychron 4? |
If you decide to get a detonation counter, Epic makes this one:
http://www.epicincorporated.com/Default.aspx?PageKey=11
Mychron makes a Lambda sensor that interfaces with any Mychron 4, if you decide to go that direction.
Both are about $400.
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Idiocy is the new smartness: Or How I learned to stop thinking and love the Cloward/Piven Strategy. |
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Mike Goebel
Joined: 28 Jul 2001
Posts: 5761
Location: United States, California, Winnetka
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| Posted: Sat Feb 13, 2010 6:40 pm Post subject: |
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You guys change the jets?
170 main
52-55 pilot
Mike G.
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mfg Technology Centre
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