 dynojet conversion chart |
  |
 Jan 9 2007, 09:51 AM
Post
#1
|
|
|
450R Veteran  Group: Members Posts: 3696 Joined: 26-February 04 From: Kansas City Missouri Member No.: 31  |
I have posted this on here before but I was wondering if you mods could make this a sticky somewhere to make it easier for people to find....its a link to a dynojet conversion chart. It shows what size stock jet is equal to what size dynojet jet....thanks
http://roadstarclinic.com/content/view/61/96/ -------------------- = Kansas City Missouri =
04 TRX450r 86 310R (250r) 03 Suzuki Z400 (my sons) 06 Yamoto 150 (my sons) 02 KX65 ( my sons) 03 CRF450r 05 Nissan Titan 91 Yamaha FZR600 |
 |
 
|
|
|
|
|
Jan 9 2007, 10:33 AM
Post
#2
|
|
|
471 on crack Group: Lifetime Supporting Member Posts: 3879 Joined: 24-January 06 Member No.: 3584 |
(IMG:style_emoticons/default/thumbup.gif)
This post has been edited by miller450r: Jan 9 2007, 01:45 PM |
|
|
|
|
Jan 9 2007, 11:04 AM
Post
#3
|
|
|
450R Veteran Group: Members Posts: 3696 Joined: 26-February 04 From: Kansas City Missouri Member No.: 31 |
QUOTE(miller450r @ Jan 9 2007, 11:33 AM) [snapback]324069[/snapback] sorry , but i think that compares mikuni to dj...so thats not stock ..somewhere there is a dj to keihin though...i think dj is always larger in comparison to K my fault, I though mikuni and Keihin used the same jet sizes....I will check into it so we will know for sure.... -------------------- = Kansas City Missouri =
04 TRX450r 86 310R (250r) 03 Suzuki Z400 (my sons) 06 Yamoto 150 (my sons) 02 KX65 ( my sons) 03 CRF450r 05 Nissan Titan 91 Yamaha FZR600 |
|
|
|
|
Jan 9 2007, 11:20 AM
Post
#4
|
|
|
450R Veteran Group: Members Posts: 3696 Joined: 26-February 04 From: Kansas City Missouri Member No.: 31 |
You are right, however I am having trouble trying to find a conversion chart for the keihin carbs. I have found a couple but none of them go high enough for our application...here is what I have found so far...
Keihin Jets -------- DJ Jets Num / Thou. ------- Num / Thou. 92.5 / 0.035 ------- 92 / 0.035 95 / 0.036 ------- 94 / 0.036 97.5 / 0.037 ------- 96 / 0.037 100 / 0.038 ------- 98 / 0.038 102.5 / 0.039 ------- 100 / 0.039 105 / 0.040 ------- 102 / 0.040 107.5 / 0.041 ------- 104 / 0.041 110 / 0.042 ------- 106 / 0.042 112.5 / 0.043 ------- 108 / 0.043 115 / 0.044 ------- 110 / 0.044 117.5 / 0.045 ------- 112 / 0.045 120 / 0.046 ------- 114 / 0.046 122.5 / 0.047 ------- 116 / 0.047 125 / 0.048 ------- 118 / 0.048 127.5 / 0.049 ------- 120 / 0.049 130 / 0.050 ------- 122 / 0.050 132.5 / 0.051 ------- 124 / 0.051 135 / 0.052 ------- 126 / 0.052 137.5 / 0.053 ------- 128 / 0.053 140 / 0.054 ------- 130 / 0.054 142.5 / 0.055 ------- 132 / 0.055 145 / 0.056 ------- 134 / 0.056 147.5 / 0.057 ------- 136 / 0.057 150 / 0.058 ------- 138 / 0.058 152.5 / 0.059 ------- 140 / 0.059 -------------------- = Kansas City Missouri =
04 TRX450r 86 310R (250r) 03 Suzuki Z400 (my sons) 06 Yamoto 150 (my sons) 02 KX65 ( my sons) 03 CRF450r 05 Nissan Titan 91 Yamaha FZR600 |
|
|
|
|
Jan 9 2007, 12:11 PM
Post
#5
|
|
|
Stock Bore/Stroke/Carb Group: Members Posts: 2778 Joined: 10-June 06 From: Shepherdstown, WV Member No.: 4618 |
-------------------- Gary
 My 2005 TRX450R - CLICK for more about my R than you'll ever want to know.MY TRX450R Valve Adjustment HOW-TO  | Moose | PRM | Kenda | DASA | CV4/Xceldyne ||| WPP Racing/Wicked Motorsports ||| CP Pistons | Hot Cams | KibbleWhite | Fuel Customs | |
|
|
|
|
Jan 9 2007, 12:38 PM
Post
#6
|
|
|
Round 'em Up and Send 'em Back! Group: Members Posts: 2125 Joined: 20-March 06 From: Cave Creek, Arizona Member No.: 4084 |
From El Duners post
Chart: Width------Kehein # -- DynoJets # -- Mikuni # 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 This post has been edited by Chuck's 06 450: Jan 9 2007, 12:41 PM |
|
|
|
|
Jan 9 2007, 01:10 PM
Post
#7
|
|
|
450R Veteran Group: Members Posts: 3696 Joined: 26-February 04 From: Kansas City Missouri Member No.: 31 |
thanks chuck, now can we make this a sticky
-------------------- = Kansas City Missouri =
04 TRX450r 86 310R (250r) 03 Suzuki Z400 (my sons) 06 Yamoto 150 (my sons) 02 KX65 ( my sons) 03 CRF450r 05 Nissan Titan 91 Yamaha FZR600 |
|
|
|
|
Jan 10 2007, 08:21 PM
Post
#8
|
|
|
250EX Rider Group: Members Posts: 164 Joined: 17-February 06 Member No.: 3803 |
I'm confused about this chart . are the names of the jets in the right order?
Width------Kehein # -- DynoJets # -- Mikuni # 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 -------------------- 03 ltz 400 white
port & polished 13.7:1 95.5 bore JE piston RHC#187 cam drz400e decomp +5 hotrods crank .100 spacer plate & drz gaskets = .120 DID cam chain MCCT 42mm FCR NCVQ needle R.A.T. Stack WB adjustable fuel screw C2HB O-ring mod (but is now zip tied) AP quick shot pump cover idle adjustment mod YFZ throttle cable 400ex thumber BARKER PERFOMENCE pipe RHC Ferrea valves +1 intake DRZ valve springs dynatek FS (np) 06 clutch w/450r plates & 400ex springs DS 650 air boot (shortend to 9'') K&N type air filter DRZ 400 flywheel nerf bars SS brake lines 450r front master brake spider grips parking brake removed gusseted frame brass steering stem bushing TRX450r front shocks w/ covers skat trak extremes 21X12X8 -8 paddle +4 swingarm rear end lowered its a mut but its a fast mut |
|
|
|
|
Jan 10 2007, 08:50 PM
Post
#9
|
|
|
300EX Rider Group: Members Posts: 740 Joined: 2-August 06 From: AZ Member No.: 5011 |
Here's my version of the same chart:
Dynojets numbers are simply the hole diameter. A 140DJ main has a 1.40mm (0.055") diameter hole in it at the threaded end. A mikuni 140 Mikuni has a 140 cc's of fuel flow per minute. And, I honestly have no idea how Keihins are measured. Width------Keihin # -- 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 And there's this: QUOTE We are often asked for a "cross reference" sheet that compares our main jets to Mikuni or Keihin. The fact is you cannot directly interchange the jets for a given size. Many things affect fuel flow through a jet of the same orifice size. The entry and exit tapers of our main jets differ from those of other companies. Due to this, the fuel flow changes as a function of velocity through the carburetor venture. This means that two jets of equal orifice size will have a different fuel flow curve relative to intake air speed. At a certain speed the two may flow equally, but a change in velocity changes the flow characteristics. The Dynojet main jet hole size is measured in millimeters. For example, a DJ142 has a 1.42mm hole. Michael Cory Research & Development Phone: 800-992-4993 EXT. xxx Michael@Dynojet.com -------------------- "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so." -- Mark Twain
 |
|
|
|
|
Jan 10 2007, 09:54 PM
Post
#10
|
|
|
Support the ASA!!! Group: Mod Team Posts: 5115 Joined: 23-November 04 From: Pismo Beach, CA Member No.: 928 |
I made an Excel document out of it and then created a picture of it and posted on my Online References thread which is stickied in a few different forums. Let me know if you guys see any mistakes. Also I now have the chart in an Excel file if anyone happens to want it.
This post has been edited by Gumby46: Jan 11 2007, 03:27 AM -------------------- Mark
 2005 TRX450R - Red HRC Kit (What is left) 12.25:1 Venom Piston Venom Porting HotCams Stage 2 DASA Exhaust System ESR Intake (Ported by Bob McKray) JD Performance +2 STD Travel Race Arms 2007 OEM Swingarm w/ GT Thunder Rear Re-Valve and MX Link RPM Dominator II & Anti-Fade ...More pics and specs... Online Reference Material for the TRX450R |
|
|
|
|
Jan 11 2007, 10:27 AM
Post
#11
|
|
|
Finally enough posts Group: Members Posts: 4043 Joined: 14-October 05 From: Louisiana___ Too far away from Glamis! Member No.: 2850 |
QUOTE(GPracer2500 @ Jan 10 2007, 07:50 PM) [snapback]324733[/snapback] QUOTE We are often asked for a "cross reference" sheet that compares our main jets to Mikuni or Keihin. The fact is you cannot directly interchange the jets for a given size. Many things affect fuel flow through a jet of the same orifice size. The entry and exit tapers of our main jets differ from those of other companies. Due to this, the fuel flow changes as a function of velocity through the carburetor venture. This means that two jets of equal orifice size will have a different fuel flow curve relative to intake air speed. At a certain speed the two may flow equally, but a change in velocity changes the flow characteristics. The Dynojet main jet hole size is measured in millimeters. For example, a DJ142 has a 1.42mm hole. Michael Cory Research & Development Phone: 800-992-4993 EXT. xxx Michael@Dynojet.com Just throw the dynojets away...
Attached File(s)
-------------------- Why is it that slim and fat chance mean the same thing?
----------------- 07 CRF250R 05 450r- Venom Piston- Mixxer Magic- Kibble White- Dynatek- HC2- Pulse Charger- GT Thunder  |
|
|
|
|
Jan 11 2007, 10:29 PM
Post
#12
|
|
|
250EX Rider Group: Members Posts: 164 Joined: 17-February 06 Member No.: 3803 |
what if this chart does not show a jet that i think i have ? do the Keihin jets work in
Mikuni carbs? -------------------- 03 ltz 400 white
port & polished 13.7:1 95.5 bore JE piston RHC#187 cam drz400e decomp +5 hotrods crank .100 spacer plate & drz gaskets = .120 DID cam chain MCCT 42mm FCR NCVQ needle R.A.T. Stack WB adjustable fuel screw C2HB O-ring mod (but is now zip tied) AP quick shot pump cover idle adjustment mod YFZ throttle cable 400ex thumber BARKER PERFOMENCE pipe RHC Ferrea valves +1 intake DRZ valve springs dynatek FS (np) 06 clutch w/450r plates & 400ex springs DS 650 air boot (shortend to 9'') K&N type air filter DRZ 400 flywheel nerf bars SS brake lines 450r front master brake spider grips parking brake removed gusseted frame brass steering stem bushing TRX450r front shocks w/ covers skat trak extremes 21X12X8 -8 paddle +4 swingarm rear end lowered its a mut but its a fast mut |
|
|
|
|
Jan 12 2007, 10:23 AM
Post
#13
|
|
|
471 on crack Group: Lifetime Supporting Member Posts: 3879 Joined: 24-January 06 Member No.: 3584 |
i just noticed that i have a jet in my spare kits marked 155RD and it looks like a keihin jet but doesnt have the K symbol like my other jets..i wonder if this is a DJ...... it came out of another guys 450r....
|
|
|
|
|
Jan 12 2007, 02:12 PM
Post
#14
|
|
|
300EX Rider Group: Members Posts: 740 Joined: 2-August 06 From: AZ Member No.: 5011 |
QUOTE(miller450r @ Jan 12 2007, 08:23 AM) [snapback]325252[/snapback] i just noticed that i have a jet in my spare kits marked 155RD and it looks like a keihin jet but doesnt have the K symbol like my other jets..i wonder if this is a DJ...... it came out of another guys 450r.... RD jets are made by RD Precision. It's an aftermarket jet that is a copy-cat of Keihin. AFAIK they use the same scale as Keihin--they're suppose to be direct copies. -------------------- "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so." -- Mark Twain
|
|
|
|
|
Jan 17 2007, 02:09 PM
Post
#15
|
|
|
471 on crack Group: Lifetime Supporting Member Posts: 3879 Joined: 24-January 06 Member No.: 3584 |
Thanks for the info GP, just saw this!
Mega RD Precision kits: http://www.cyclepages.com/ProductGroupDisp...GroupID=5502733 http://www.cyclepages.com/ProductDetails.a...oductID=4621855 And one of the best deals i have seen on true Keihin 5-pack jets also.. http://www.cyclepages.com/ProductGroupDisp...GroupID=5502733 (i just seem to hate going to the dealer for a 5 dollar jet) This post has been edited by miller450r: Jan 17 2007, 02:31 PM |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
| Lo-Fi Version | Time is now: 9th February 2010 - 06:04 AM |