Hotseat pipe on 500 Scrambler. Carb tunning
#1
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I have just installed a Hotseat pipe and clutch kit on my 00 500 Scrambler. Yes there is some improvement but not what I tought. I also added a K&N filter. I am going to jet it up now but getting at the carb is a chore. Before I do any suggestions would be great. My dealer says stock jetting is 155. Does anyone have one of these pipes on there Scrambler? What carb mods did you do?
#3
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Changing the main jet is a little time consuming, but its not that hard. The stock jet is 155, after adding a pipe and K&N, 160 should be about right. If you don't want to have to do the job again, put a 165 in and punch a few big holes in your airbox lid. If you have any interest in a Dynojet kit, I'd put it in at the same time as the main jet.
#5
#6
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I think the dynojet kits use a different numbering system than the stock jets. If you take a look at the Honda fourm this topic comes up all the time on the 400ex jetting. Also I'm at 4000 ft, 85 degrees, and run my 00 500 Scrambler with a K/N filter and use a 158 main jet and the plug is perfect.
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#8
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I put a 160 main in today took it out and tested it and there was no improvement. I ran it before the pipe after the pipe and now after jetting and there no improvments what so ever on the radar, after jetting and very little from stock. I ran it three times at three different lengths, big bucks for little gains. Top speed is only 57 miles hour.
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