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kawa gt550 help

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webhead
Renault 5 Driver



Joined: 22 Mar 2008
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PostPosted: 09:43 - 12 May 2010    Post subject: kawa gt550 help Reply with quote

hello there i wants to buy some k&n,s for my gt550 but what size jets would i need to go to if i do this please.

and where could i get the half moon rubber cam seal things from as mine slighlty weep so i wants to replace them.

many thanks.
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temeluchus
World Chat Champion



Joined: 01 Oct 2008
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PostPosted: 12:23 - 12 May 2010    Post subject: Reply with quote

go 25% bigger roughly.

As for the leak, I believe those are part of the cam cover gasket. You can just clean the area and apply a little black silicone to stop the leak.
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webhead
Renault 5 Driver



Joined: 22 Mar 2008
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PostPosted: 14:32 - 12 May 2010    Post subject: Reply with quote

i got another problem to sort the start button dont do starter,i checked the button thats ok i checked stand switch clutch switch all ok ,starts when you touch solenoid ,put new solenoid on but same ,checked voltage to solenoid and its only 0.02 when you press button so something is not letting 12v to do relay in solenoid got any ideas cheers
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Freaky_1
Nova Slayer



Joined: 12 May 2010
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PostPosted: 17:45 - 12 May 2010    Post subject: Reply with quote

webhead wrote:
i got another problem to sort the start button dont do starter,i checked the button thats ok i checked stand switch clutch switch all ok ,starts when you touch solenoid ,put new solenoid on but same ,checked voltage to solenoid and its only 0.02 when you press button so something is not letting 12v to do relay in solenoid got any ideas cheers



Unfamiliar with your specific bike and it may well be different than we have here (yup, I'm in the states), but some of our Kawis have relays behind the solenoid that are powered by the start button only if the stand switch is closed...................... Yours may not have this relay, but would be easy to check if it is there (I've actually bought a couple bikes cheap for this very problem). Another common on them over here is the connections being corroded at the exit of the bars, from rain and constant motion.

Hope this may be helpful.

Frank
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webhead
Renault 5 Driver



Joined: 22 Mar 2008
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PostPosted: 18:33 - 12 May 2010    Post subject: Reply with quote

yes the relay is in the solenoid itself 2 wires go into it ,and if you put 12vots through it the relay works letting the high voltage across the 2 battery terminals that then goes to starter,

i think i have lost the 12v at the button im sure it takes 12v from the kill switch then passes it over to button but im not 100 percent on that ill check tomorrrow ,

basicly the 12v isnt there at the solenoid relay part thus not putting power to starter motor,i got to make sure i got 12v at my kill switch tomorrow must have as kill switch will turn engine off ok,

well i will c tomorrow.cheers
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Freaky_1
Nova Slayer



Joined: 12 May 2010
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PostPosted: 01:49 - 13 May 2010    Post subject: Reply with quote

webhead wrote:
yes the relay is in the solenoid itself


Ok, disregard my post then as the relay I'm referring to is SEPERATE from the solenoid and breaks the connection from the start button to the solenoid if the stand switch isn't closed.

Sorry no help and best of luck with it!

Frank
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stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
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PostPosted: 01:55 - 13 May 2010    Post subject: Reply with quote

If you can keep the standard airbox. Do.

Motorbikes invariably run better with an airbox than without one (you don't see serious race bikes runing pod filters). Kawasakis especially. It's all to do with pressure waves.
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temeluchus
World Chat Champion



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PostPosted: 02:32 - 13 May 2010    Post subject: Reply with quote

I ran a GPz550 with pods on the Keihins, ran fine after upjetting other than the usual pod filter issues with cold and damp. Its more or less the same engine as the GT.

Older bikes like this do not have particularly clever airboxes and they arent as helpful as the computer designed airboxes on more modern machines.

My ZZR based GPz1100S also ran fine on pods after rejetting. Probably wouldnt be a good idea on a ZZR however as it has downdraughts with a much more advanced airbox design. The GPz (and the ZRX, which also runs a sidedraught head) arent so picky.

I recommend the foam pods over K&N/S&B style pods.
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webhead
Renault 5 Driver



Joined: 22 Mar 2008
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PostPosted: 10:32 - 13 May 2010    Post subject: Reply with quote

well i think it will be ok to take air box out as in 1988 computers were crap so i cant see bike being designed on 1 would have took a while lol.

but im confused by the percentage to up jet as k&n site says about 15 percent , on standard exhaust well my exhaust is a motad 4 into 1 so bugger knows.
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temeluchus
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PostPosted: 10:50 - 13 May 2010    Post subject: Reply with quote

I think they are 105's stock. If i recall on my GPZ i settled on 117.5.
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Robby
Dirty Old Man



Joined: 16 May 2002
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PostPosted: 14:03 - 13 May 2010    Post subject: Reply with quote

webhead wrote:
well i think it will be ok to take air box out as in 1988 computers were crap so i cant see bike being designed on 1 would have took a while lol.


In the 1950s a man called Walter Kaaden in east Germany worked out how pressure waves worked for 2-stroke exhausts with a pencil and paper and an oscilloscope. He got an MZ 2-stroke to make more than 100bhp/litre.

Trust me, the Japanese manufactures knew a whole lot more about airbox design in 1988 than you do now. If you go for pods, the best result you can expect is to get it running exactly as it is now after a lot of work and skinned knuckles.
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webhead
Renault 5 Driver



Joined: 22 Mar 2008
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PostPosted: 00:45 - 15 May 2010    Post subject: Reply with quote

lol well hes welcome to try that on my mz ,

what your saying though isnt true as a quick dyno test would prove you wrong if setup correctly thats why k&ns where invented,quicker throttle response more air intake and less crappy cleaning,

2 strokes work on a supercharger principle,so if i strap a turbo to my 4 stroke it will be same thing.

ahh im off to work out volumetric space in my airbox lmfao
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temeluchus
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PostPosted: 14:19 - 15 May 2010    Post subject: Reply with quote

[quote="Robby"]
webhead wrote:

Trust me, the Japanese manufactures knew a whole lot more about airbox design in 1988 than you do now. If you go for pods, the best result you can expect is to get it running exactly as it is now after a lot of work and skinned knuckles.


Not really. The GT550, when discontinued in 2003, still hadmore or less the same airbox the Z seried has since 1972.

Acousticly tuning an airbox is more difficult than tuning a tube. No disrpespect to Herr Kaaden.

The truth is **wait for it** alot of these engines are sensitive to airbox removal because they have CV carbs fitted. They are sensitive to the vacuum levels that lift the slide. Hence why slide carbs like the RS36 are popular with tuners as they are less sensitive to external conditions.
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