650 Mod's 78 Fighter Build

More
27 Jul 2016 17:47 #736434 by 650mod
Replied by 650mod on topic Re:650 Mod's 78 Fighter Build
I haven't checked them in a while. If one is cracked, would it not lead to a lean condition?

78 kz 650 custom
Wiseco 720cc big bore
Dynajet stage 3 carb kit with pods
2002 Kawasaki Z750 exhaust
2001 Buell lightning front end
1999 Ninja 600 swingarm with 1999 Ninja 900 rear rim
converted to monoshock rear
Too many goodies to list fully

Please Log in or Create an account to join the conversation.

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
27 Jul 2016 18:14 #736435 by SWest
Replied by SWest on topic Re:650 Mod's 78 Fighter Build
Sure, it won't be burning like the others. Check where it fits against the head. I used :ohmy: Permatex to seal my old ones. Worked long enough for me to get new ones. Now I have them on the door to Bossie's shed for carb adjustments.
Steve

Attachments:

Please Log in or Create an account to join the conversation.

More
27 Jul 2016 19:14 #736437 by 650mod
Replied by 650mod on topic Re:650 Mod's 78 Fighter Build
Steve- will do. When I rebuilt her the first time (4 years ago), any rubber that looked aged or drying at all got replaced- so I did the orinhs on the backs of the boots. I'll check the boots though and see what they look like. I like the idea with the old boots... out of curiosiry- where did the name Bossie come from for your girl?

78 kz 650 custom
Wiseco 720cc big bore
Dynajet stage 3 carb kit with pods
2002 Kawasaki Z750 exhaust
2001 Buell lightning front end
1999 Ninja 600 swingarm with 1999 Ninja 900 rear rim
converted to monoshock rear
Too many goodies to list fully

Please Log in or Create an account to join the conversation.

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
27 Jul 2016 19:41 #736441 by SWest
Replied by SWest on topic Re:650 Mod's 78 Fighter Build
Very handy place to work on them
The kids named her Bossie the Kaw when they were young. My 69 Ford F250 is called Bertha. :whistle:
Steve

Please Log in or Create an account to join the conversation.

More
28 Jul 2016 04:05 #736457 by 650mod
Replied by 650mod on topic Re:650 Mod's 78 Fighter Build
Oh for sure it is. Beats my ardox nail on the garage wall beam and hanging the carbs up by the spacer body.
Oh I see, that's awesome :) I haven't quite come up with a name for this little hell cat yet...

78 kz 650 custom
Wiseco 720cc big bore
Dynajet stage 3 carb kit with pods
2002 Kawasaki Z750 exhaust
2001 Buell lightning front end
1999 Ninja 600 swingarm with 1999 Ninja 900 rear rim
converted to monoshock rear
Too many goodies to list fully

Please Log in or Create an account to join the conversation.

More
28 Jul 2016 05:33 #736463 by wrenchmonkey
Replied by wrenchmonkey on topic 650 Mod's 78 Fighter Build
Dang. I feel so late to the party here... :blush:

Devin! Glad that new Suzi petcock worked out for you too. How funny, that you got one a month after I did and yet you have already ran more gas through it :laugh:
Maybe I shouldn't be sticking my nose in here since I ain't got my 650 to even start yet but...

So on your (un-named as yet) 650; isn't carburetor number two the one with the accelerator pump too? My number 2 carb has that so I wondered if it's somehow related? I know it has an adjustment screw.
When I rebuilt them (no, really. I swear I did! :unsure: ) I noticed how the bowl on #2 was also different along that small-externally-connected-by-rubber-fuel-rail. The gasket on #2 bowl had an extra hole (which my new gaskets did not, so I had to razor knife it into the gasket)...

Did swapping the High Tension leads between 2 to 3 make any difference?
I have a new but quasi coil that fails once warmed up, So, I tried changing HT leads between 1 & 4 and then ultimately between 2 & 3 and then eventually swapping the coils entirely at their input wire connections to isolate the fault to a specific coil from the points etc.

Hope all is well!

Please Log in or Create an account to join the conversation.

More
28 Jul 2016 06:51 #736478 by 650mod
Replied by 650mod on topic 650 Mod's 78 Fighter Build
Wrench- better late than never, right? She sure did work out! Alot easier to run as well. I like how small and tidy it is. Stick your nose in whatever you want! Anything helps out here.

So with this unnamed beauty, I actually don't have the accelerator pump as this is the older '78 650. I think the accelerator pumps came into play on the '80 650's and newer. So that one is out :)

As for swapping the leads- the shop that put the leads on left only enough meat to get JUST to each cylinder it's supposed to supply- therefore I wasn't able to swap the leads... However, although I haven't been able to swap the leads, I have noticed one thing on Cyl #3. When I start it cold, cyl #3 takes a little while to warm up. ie-- feel the header pipe, 1, 2, 4 are warm/hot within seconds. #3 I can hold my finger to for a little bit before taking it off. So what I'm thinking here is a few things. 1- float level is off a little and it's causing it to run rich on starts. BUT when the bike is warm, it doesn't foul the plug- the plug runs coffee and cream coloured. So I'm thinking that one is out. #2- the coil is starting to fail, therefore leading to #2 burning colder if there is increased resistance in the coil/lead.

I warmed the bike up, went for a ride, then got out my colortune unit and checked the pilot burn color on that cylinder. It's borderline rich/starting to dial in and burn blue with the pilot turned out 5 turns (almost far enough to fall out).

What I'm thinking here of what could be done:
1- coils and leads changed to get rid of any potential issues
2- check float bowl levels yet again and maybe lower #2/3 a hair if needed.
3- there's SOME sort of junk caught in some air passage way that I haven't managed to let loose yet that is causing the pilot screw to not let the proper amount of air in.
4- the pilot jet that is in #2 is labeled as a 17.5 (size of all others now). BUT could it maybe be mislabeled and be richer?

At least I can ride it, the petcock is sorted out, and the plugs burn MUCH better. And she's more of a rocket now. I notice the "burble" The most maybe between 1/4-1/2 throttle- right where the pilot/needle start to mesh. Any input from anyone is appreciated.

Devin

78 kz 650 custom
Wiseco 720cc big bore
Dynajet stage 3 carb kit with pods
2002 Kawasaki Z750 exhaust
2001 Buell lightning front end
1999 Ninja 600 swingarm with 1999 Ninja 900 rear rim
converted to monoshock rear
Too many goodies to list fully

Please Log in or Create an account to join the conversation.

More
28 Jul 2016 09:44 #736491 by 650mod
Replied by 650mod on topic 650 Mod's 78 Fighter Build
I forgot to mention in the last post- I disconnected the petcock just to check. Ran it with the vacuum line plugged and wide open, made no difference to the running. So that is ruled out as well.

78 kz 650 custom
Wiseco 720cc big bore
Dynajet stage 3 carb kit with pods
2002 Kawasaki Z750 exhaust
2001 Buell lightning front end
1999 Ninja 600 swingarm with 1999 Ninja 900 rear rim
converted to monoshock rear
Too many goodies to list fully

Please Log in or Create an account to join the conversation.

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
28 Jul 2016 16:12 #736534 by SWest
Replied by SWest on topic 650 Mod's 78 Fighter Build
Here's a pic of the door. The cam makes lousy pics.
Steve

Attachments:

Please Log in or Create an account to join the conversation.

More
28 Jul 2016 16:27 #736537 by 650mod
Replied by 650mod on topic 650 Mod's 78 Fighter Build
Steve- that's a sweet set up. I do pretty well the same, just a little sketchy on my end. A single nail holds the carbs up. So if it ever slips... i'm done.

Still scratching my head with this one. As I wasn't able to swap the leads over, i'm leaning towards the coil/leads being the issue. Or a clogged air passage. I'll keep chipping away.

Devin

78 kz 650 custom
Wiseco 720cc big bore
Dynajet stage 3 carb kit with pods
2002 Kawasaki Z750 exhaust
2001 Buell lightning front end
1999 Ninja 600 swingarm with 1999 Ninja 900 rear rim
converted to monoshock rear
Too many goodies to list fully

Please Log in or Create an account to join the conversation.

  • SWest
  • Offline
  • Sustaining Member
  • 10 22 2014
More
28 Jul 2016 16:45 #736542 by SWest
Replied by SWest on topic 650 Mod's 78 Fighter Build
You can unbolt the coils from the frame to test them.
Steve

Please Log in or Create an account to join the conversation.

More
29 Jul 2016 05:39 #736574 by 531blackbanshee
Replied by 531blackbanshee on topic 650 Mod's 78 Fighter Build
unscrew the plug cap from the wire and make sure that it is screwing in to the core of the wire properly.

i have encountered them going offside and barely making contact and after awhile a lil corrosion goes to ruining the contact.

just a thought.

leon

skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!

billybiltit.blogspot.com/

www.kzrider.com/forum/5-chassis/325862-triple-tree-custom-work

kzrider.com/forum/5-chassis/294594-frame-bracing?limitstart=0

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum