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1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
- odl666
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24 Apr 2010 18:23 #362933
by odl666
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw) was created by odl666
Hello all,
I need some assistance, I recently purcahsed a Dyno Jet kit Stage 3 for a 1984 set of gpz 750 carbs. I have done all the needful but I cannot find the air fuel mixture plug to drill? I found a brass plug close to the area the instructions state, is this it? AM I missing something?
Please see attached pic.
I need some assistance, I recently purcahsed a Dyno Jet kit Stage 3 for a 1984 set of gpz 750 carbs. I have done all the needful but I cannot find the air fuel mixture plug to drill? I found a brass plug close to the area the instructions state, is this it? AM I missing something?
Please see attached pic.
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
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- odl666
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24 Apr 2010 18:32 #362937
by odl666
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
Replied by odl666 on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
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- otakar
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24 Apr 2010 18:47 #362942
by otakar
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Replied by otakar on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- odl666
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24 Apr 2010 19:21 - 24 Apr 2010 19:25 #362945
by odl666
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
Replied by odl666 on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
THank you but my carbs look like this?
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
Last edit: 24 Apr 2010 19:25 by odl666.
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24 Apr 2010 19:28 #362948
by odl666
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
Replied by odl666 on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
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- otakar
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24 Apr 2010 19:31 #362949
by otakar
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Replied by otakar on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
You are looking at the wrong side of the carb. You drill out those brass plugs and you are screwed. Look at the top of the carb not at the bottom.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- otakar
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24 Apr 2010 19:53 #362954
by otakar
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Replied by otakar on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
I really hate "Dynojet. they are listing your kit as for Keihin carbs yet you have Mikuni carbs. Yet when you buy the stage one kit for the exact same bike they show it for the Mikuni carb which is correct. Someone there has their head up their ass. They do that for a bunch of different bikes not just yours. Basically you have the wrong instructions for that carb. who knows if they even put the right parts in the kit, because the needles for the Mikuni and Keihin are totally different. 21**.*** kits are for Keihin and 23**.*** kits are for Mikuni. It seams like someone at Dynojet has no idea of what carbs are on what bike.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- otakar
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24 Apr 2010 19:59 #362956
by otakar
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Replied by otakar on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
I also noticed that you are putting these carbs on a KZ650. This bike will have totally different draw than the stock GPZ750 which these kits are designed and tuned for. If you can i would return this kit and jet these carbs for your bike the right way because they will be jetted wrong with this kit/bike combo.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- otakar
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24 Apr 2010 20:07 #362957
by otakar
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Replied by otakar on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
If you look at the instructions for these kits, they tell you exactly what alterations these kits are designed/tuned for. Once there are any other differences than what is listed on the instruction sheet, all bets are off. When I called them and asked them what I would require for my bike with such and such alterations (such as different cams and ported head they said that none of their kits would work for my bike even though my bike was listed on their sheet. If you can, return the kit. We can help you jet this thing right and it wont cost you $125
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- odl666
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25 Apr 2010 04:10 #362994
by odl666
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
Replied by odl666 on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
Thanks for all the info. I am doing the GPZ Mod Faq on my 1978 KZ650. SO far I have polished and ported the head, milled .025 and have gpz carbs boots . THe Pistons are over sized and I have put in a set of 1884 GPZ cams and carbs.
I have got the bike running but not good. I bought the jet kit mostly for the adjustable needles. 93 dollars was a lot of money just for needles.....I ordered the kit from Z1 enterprises, and it appears to be the right kit.
I am thinking that this bike should be a running beast when completed but I cant get this thing to run right. I think i t has to be a carb issue......?
Thanks.
I have got the bike running but not good. I bought the jet kit mostly for the adjustable needles. 93 dollars was a lot of money just for needles.....I ordered the kit from Z1 enterprises, and it appears to be the right kit.
I am thinking that this bike should be a running beast when completed but I cant get this thing to run right. I think i t has to be a carb issue......?
Thanks.
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
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- otakar
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25 Apr 2010 08:17 - 25 Apr 2010 08:22 #363021
by otakar
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Replied by otakar on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
That is exactly what you did is paid $93 for a set of needles. As I said before unless this is a 738cc engine with a GPZ stock head, you will have to change everything els. Pull one of the needles and post a picture of it. This way we can tell you which grove to position the clip in. Drilling the slide vacuum holes is fine. That only affects the speed of slide reaction. Not how much the slide moves. Everything els we will have to work on depending on your symptoms. Now looking at the picture of your bike, find the needle screw as i showed you in the picture above.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 25 Apr 2010 08:22 by otakar.
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- odl666
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25 Apr 2010 12:04 #363112
by odl666
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
Replied by odl666 on topic 1984 GPZ 750 Dyno Jet Kit(air/fuel mixture screw)
THanks for all the help again. I think I figured out the problem, THe carbs still had the plugs over the pilot jet. I have bench synced the carbs at the spot you pointed out in earlier post.
THe Pilot jet needs to be adjusted to a certain spot? 1 and a half turn out maybe?
Or do you even have to adjust this?
THe bikes only problem is it is hard to start, with a little ether it kicks up.
I have the needle set right in the middle about the fourth slot down.
Thank you
THe Pilot jet needs to be adjusted to a certain spot? 1 and a half turn out maybe?
Or do you even have to adjust this?
THe bikes only problem is it is hard to start, with a little ether it kicks up.
I have the needle set right in the middle about the fourth slot down.
Thank you
1978 kz 650b with gpz faq mods cams carbs polished and ported
1979 gs750e
1972 bsa lightning under construction
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