She's running great 8000 rpm and blah blah blah

More
06 Jul 2011 20:53 #461425 by csrjoe
What in god's name could separate the carbs from the rubber intake boots while the bike is running on the road. Is this common??? By the way the rubber manifolds are new replaced last year by pro-machenic. the bike is a 83 kawi csr 650,with pods and mac header.
Just a side note I can honestly say I love this bike. I also owned a 77 GS550 beat the piss out of it and never ran into this problem.

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

  • TeK9iNe
  • Offline
  • User
  • What did you do!?!
More
06 Jul 2011 21:48 #461438 by TeK9iNe
Were the carbs supported by something other than jsut the intake boots with those pod filters on there?
If not, then yes it is common for the carbs to pop off with lots of heat and vibration and nothing holding them up/in towards the boots - seen it before.

B)

Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)

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

More
06 Jul 2011 21:55 #461441 by otakar
I have never seen it or experienced it, but I suppose it could happen under the right conditions. There is no harm in supporting the carbs from the frame.

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.

More
06 Jul 2011 22:08 #461443 by 650ed
The carbs were intended to be supported fore and aft. If you removed the airbox boots the carbs are just hanging by the carb holders out front like a hammock attached to only one tree. Every bump and vibration bounces them up and down a little until something gives. Your "pro-mechanic" probably should have mentioned this or added some support. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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

More
06 Jul 2011 22:42 - 06 Jul 2011 22:42 #461447 by racer54
I had the carbs pop out of the boots once but that was after it landed after standing it straight up after taking off too aggressively. :whistle: But that was the only time I have ever had it happen.

1980 LTD (changed over the years), 1979 LTD (being rebuilt), 1977 KZ turbo and various KZ's in various states of build. KLX110
Last edit: 06 Jul 2011 22:42 by racer54.

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

More
06 Jul 2011 22:46 #461449 by Archiddeon
Replied by Archiddeon on topic She's running great 8000 rpm and blah blah blah
Note to self, add some sort of safety line to the carb manifold ... certainly don't want mine falling off and landing on the road!

1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E

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

  • KZ_Rage
  • Offline
  • User
  • Kentucky Bourbon Barrel Ale
More
07 Jul 2011 00:09 #461457 by KZ_Rage

otakar wrote: I have never seen it or experienced it, but I suppose it could happen under the right conditions. There is no harm in supporting the carbs from the frame.


+1 Not an issue for me either but the two throttle cables don't have a lot of slack in them so maybe I'm getting some benefit from that... or maybe the heavy turning of the right wrist is causing so much suction from the engine they just can't move away! :laugh: Yeah, that and maybe they are actually getting closer to the engine... I like that idea and sticking with it!


Seriously now you have me concerned... :pinch:

1979 KZ1000E1 SOLD!
1984 KZ550F2 SOLD!
2006 ZG1000A6F (Totaled)
2001 ZRX1200R (Sold)
2001 Sprint 955i ST (daily rider)

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

More
07 Jul 2011 01:33 #461468 by Patton

csrjoe wrote: What...could separate the carbs from the rubber intake boots while the bike is running on the road. Is this common??? By the way the rubber manifolds are new replaced last year by pro-machenic. the bike is a 83 kawi csr 650,with pods and mac header....


:huh: I interpret this to mean carbs are separating from the air box hoses, referred to as rubber intake boots, and not meaning carbs are separating from the carb holders, referred to as rubber manifolds. :unsure:

Good Fortune! :)

1973 Z1
KZ900 LTD

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

More
07 Jul 2011 01:59 #461471 by csrjoe
very good idea I'm sure this could be a possible solution. After looking it over again I notice going left to right while sitting on the bike. Carb 1# is separated from manifold more the 2# but 3 and 4 are still on. It almost looks like one side had been move back. Anyway How do you put these puppy's back, does warming them up with a hair dryer work to soft-in the rubber to accept the carbs again.

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

More
07 Jul 2011 02:39 #461475 by csrjoe
What I'm speaking of is the rubber in between the engine and the carbs. No airbox on the bike just aftermarket cones, also check my manual and it says nothing about this, for installation purposes. Thanks guys for amy respones.

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

More
07 Jul 2011 08:06 #461484 by Patton
With clamps loosened, carbs should be pushed fully into the carb holders.

Sometimes a wooden stake may be employed as a lever at rear of carbs to persuade them fully into position.

Then re-tighten the clamps.

Before re-installing the carbs, it's usually helpful to spray WD40 (or Armoral, silicone, whatever) onto inside of the carb holders as a "lube" to aid sliding the carbs fully into position inside the holders.

Good Fortune! :)

1973 Z1
KZ900 LTD

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

More
07 Jul 2011 15:20 #461540 by ezrider714
Replied by ezrider714 on topic She's running great 8000 rpm and blah blah blah
Sounds like the carbs were not properly installed and or the clamps not tightened properly
The rubber is not real soft and pliable, it is more of a plug and socket connection to the carb snout and if it is not fully seated, the clamp will not tighten down correctly to hold carb in place.
The clue to this is your description of carb 1 and 2 being further out of place than 3 and 4.
as all 4 carbs are connected into one unit,unless they were installed like that, it would be tough for them to back out of position in that manner.

To reinstall make sure everything is disconnected from them carb assembly, ie throttle cables, fuel line,vent lines, anything that could put a side load on the assembly no matter how small it might seem.
Have filter pods removed to allow use of a 2x4 the width of the (4) carbs Use another 2x4 as a pry bar between carb inlet covering 2x4 and the frame in the area that the air box use to occupy.Should be able to "pop" the carb assembly in place evenly,visually verify this before tightening the clamps.
Then re-install everything that hooks up to the carbs.

I suppose some support to the frame couldn't hurt ,but it should be rubber mounted,there's a reason the carb holders and air box boots are made from rubber.
I've never seen a need for this though in over 30yrs of working on these bikes.
Good Luck
EZ

78 KZ650SR Mine since 79
4-1 Mac Jet Hot coated since mid 80's
Dyna Coils
Saddlebags (I ain't skeered of going nowhere) :)
The following user(s) said Thank You: csrjoe

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

Powered by Kunena Forum