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Thread: 170 main jet

  1. #1
    Join Date
    Jan 2006
    Posts
    76

    170 main jet

    Hi I was wondering is a 170 dyno jet way to big for a 400ex

    i have a hmf exhaust no air box lid but stock filter

  2. #2
    Join Date
    Nov 2005
    Location
    Chandler, AZ
    Posts
    4,021
    Barring extraordinary circumstances, yes, it's too big.

  3. #3
    Join Date
    Apr 2005
    Location
    Phoenix, AZ
    Posts
    962
    Yeah ... a DynoJet 170 is like what- a 195 Keihen (sp?)? For the mods listed you will probably be at like a 145-150 DJ I would guess, but don't hold me to it cause I don't know DynoJet sizes. Someone posted a DynoJet-to-Keihen conversion chart but can't remember where it is
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    2004 Honda TRX400EX (RED)

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  4. #4
    Join Date
    Jul 2005
    Location
    Oklahoma
    Posts
    2,962
    Originally posted by 04TRX400EX
    Yeah ... a DynoJet 170 is like what- a 195 Keihen (sp?)? For the mods listed you will probably be at like a 145-150 DJ I would guess, but don't hold me to it cause I don't know DynoJet sizes. Someone posted a DynoJet-to-Keihen conversion chart but can't remember where it is
    Holy CHIT!!

    Edit: Here it is:

    hole-----Kehein #--- DynoJet #---Mikuni #
    0,0570----147,5------ 136--------127,5
    0,0580----150-------- 138--------129,4
    0,0590----152,5------ 140------- 131,3
    0,0600----155-------- 142--------133,1
    0,0610----157,5------ 144------- 135,0
    0,0620--- 160-------- 146------- 136,9
    0,0630--- 162,5------ 148------- 138,8
    0,0640--- 165-------- 150------- 140,6
    0,0650--- 167,5------ 152------- 142,5
    0,0660----170-------- 154------- 144,4
    0,0670--- 172,5------ 156------- 146,3
    0,0680--- 175-------- 158------- 148,1
    0,0690--- 177,5------ 160------- 150,0
    0,0700--- 180-------- 162------- 151,9
    <Mat>

    2007 YFZ 450.....with some goodies!!

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  5. #5
    Join Date
    May 2005
    Location
    Outside Philly
    Posts
    5,674
    heres the full table.
    Width------Kehein # -- DynoJets # -- Mikuni #
    0,0350---- 92,5--------- 92----------- 86,3
    0,0360---- 95----------- 94----------- 88,1
    0,0370---- 97,5--------- 96----------- 90,0
    0,0380---- 100---------- 98----------- 91,9
    0,0390---- 102,5------- 100---------- 93,8
    0,0400---- 105--------- 102---------- 95,6
    0,0410---- 107,5------- 104---------- 97,5
    0,0420---- 110--------- 106---------- 99,4
    0,0430---- 112,5------- 108--------- 101,3
    0,0440---- 115--------- 110--------- 103,1
    0,0450---- 117,5------- 112--------- 105,0
    0,0460---- 120--------- 114--------- 106,9
    0,0470---- 122,5------- 116--------- 108,8
    0,0480---- 125--------- 118--------- 110,6
    0,0490---- 127,5------- 120--------- 112,5
    0,0500---- 130--------- 122--------- 114,4
    0,0510---- 132,5------- 124--------- 116,3
    0,0520---- 135--------- 126--------- 118,1
    0,0530---- 137,5------- 128--------- 120,0
    0,0540---- 140--------- 130--------- 121,9
    0,0550---- 142,5------- 132--------- 123,8
    0,0560---- 145--------- 134--------- 125,6
    0,0570---- 147,5------- 136--------- 127,5
    0,0580---- 150--------- 138--------- 129,4
    0,0590---- 152,5------- 140--------- 131,3
    0,0600---- 155--------- 142--------- 133,1
    0,0610---- 157,5------- 144--------- 135,0
    0,0620---- 160--------- 146--------- 136,9
    0,0630---- 162,5------- 148--------- 138,8
    0,0640---- 165--------- 150--------- 140,6
    0,0650---- 167,5------- 152--------- 142,5
    0,0660---- 170--------- 154--------- 144,4
    0,0670---- 172,5------- 156--------- 146,3
    0,0680---- 175--------- 158--------- 148,1
    0,0690---- 177,5------- 160--------- 150,0
    0,0700---- 180--------- 162--------- 151,9
    0,0710---- 182,5------- 164--------- 153,8
    0,0720---- 185--------- 166--------- 155,6
    0,0730---- 187,5------- 168--------- 157,5
    0,0740---- 190--------- 170--------- 159,4
    0,0750---- 192,5------- 172--------- 161,3
    0,0760---- 195--------- 174--------- 163,1
    0,0770---- 197,5------- 176--------- 165,0
    0,0780---- 200--------- 178--------- 166,9
    0,0790---- 202,5------- 180--------- 168,8
    0,0800---- 205--------- 182--------- 170,6
    0,0810---- 207,5------- 184--------- 172,5
    0,0820---- 210--------- 186--------- 174,4
    0,0830---- 212,5------- 188--------- 176,3
    0,0840---- 215--------- 190--------- 178,1
    0,0850---- 217,5------- 192--------- 180,0
    0,0860---- 220--------- 194--------- 181,9
    0,0870---- 222,5------- 196--------- 183,7
    0,0880---- 225--------- 198--------- 185,6
    0,0890---- 227,5------- 200--------- 187,5
    Steve #48

    2005 450r - In great shape, setup perfect for my riding style

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