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[Gengis]

anyone got any plates fitted to an 07 10r, if so, is there any difference to the running of the bike on the road,

[doug_zx10r]

I fitted the Ivan's kit, but I can't say that they made much difference in isolation.  What they do is clean up the plug area to make it less knuckle-scratching when working around the cam cover.  What I did notice was the bike backfires more, but only when the baffles are out, especially at low speed as you approach a side road, it does get the attention of pedestrians though.

[ZX10R-RACER]

doug have a look at my post in the for sale section,  if your bike is a uk bike it probably backfire because of an air leak on the tube you remove thats goes to the bottom of the air box 

[doug_zx10r]

The Ivan's kit comes with all the blanks for the airbox, etc.  It only does it with the baffles out of the Akkies, it's never done it with them in.

[horse]

[ZX10R-RACER]

glad you took some pics i was about to do this,

ok the standard plate have reeds in them these only control oil vapor in the the air box, i must say you dont really need these fitted as most engines dont have them anyway.
but just to clear any confusion they wont have any affect on fueling or make your bike flame.
but they are a good idea to clean up the top of the engine, plus the less shite on your bike you dont need all helps to weight saving, i know it dont look much but it all adds up.

[truescot]

glad you took some pics i was about to do this,

ok the standard plate have reeds in them these only control oil vapor in the the air box, i must say you dont really need these fitted as most engines dont have them anyway.
but just to clear any confusion they wont have any affect on fueling or make your bike flame.
but they are a good idea to clean up the top of the engine, plus the less shite on your bike you dont need all helps to weight saving, i know it dont look much but it all adds up.

dude, i'm sorry as i usually agree with you/respect your advice but the quote directly from kawasaki is "The pair valve is a valve designed to allow air from the airbox into the exhaust for emissions" so clearly it must dump air into the exaust as it says, i will agree it won't change fuelling but it will give the fuel that always dumped into the exhaust ignition conditions in the headers.

[ZX10R-RACER]

I must hold my hands up and say im not 100% on this, but my theory is all the info regards this has come from U.S sites and there bikes have different set ups to uk bikes,
i have even spoke to a friend of mine who is top kawasaki techy and he said the same thing as me.
To be honest i cant stop thinking about it but im sure im right, but please let me know if you know something thats different.

P.S how can it dump fuel into the exhaust when the plate with the petals in is on the rocker cover and the pipe goes to the air box???

[truescot]

I must hold my hands up and say im not 100% on this, but my theory is all the info regards this has come from U.S sites and there bikes have different set ups to uk bikes,
i have even spoke to a friend of mine who is top kawasaki techy and he said the same thing as me.
To be honest i cant stop thinking about it but im sure im right, but please let me know if you know something thats different.

P.S how can it dump fuel into the exhaust when the plate with the petals in is on the rocker cover and the pipe goes to the air box???

i'm not saying the pair valve dumps fuel into the exhaust only air, the fuel is unburnt fuel dumped by the engine into the exhaust, the pair valve as i understand it(and i admit my knowledge is not anywhere near your level) just dumps air into the headers so that that the unburnt fuel burns in the pipe leaving cleaner emmisions and preventing the unburnt fuel reaching the cat and damaging it

[HammyUK]

On the US bikes it is a legal requirement Liam. They have to clean all the unburnt fuel before it reaches the cat and the open air hence the air bleed function. I think the EU/Canada bikes have something similar. The US bikes actually have a pump that forces air in as well as the bleed function that the plates remove.
I don't think its that important for us as I've never seen anything lik ethe plates on an ex-Vivaldi or Hawk bike

[ZX10R-RACER]

no,
it works a bit like this

oil vapor rises to the top of the engine
this vapor passes through the plates on the rocker cover
then the vapor reaches the pair valve
this is electronically controlled (not sure to what level)
once the pair valve is open the vapor is sucked into the airbox and then through the throttle bodies.


this would explain why some times when you start a zx10r from cold they smoke a bit!


 

[ZX10R-RACER]

yes hammy your right which is why i think were all a little confused, uk bikes work how i have explained.

[HammyUK]

So there's no real point except weight saving as you could actually do harm. If the vapour builds up any pressure it could cause problems - unless there's some other way of venting it from the head.

[Chrisblack10r]

the crank case breather is a different system

steve at motrac was saying when he dyno'd my 04 and bunnies 07 zx10's, he had to block the pipe off as it puts oxygen into the exhaust and messes up the air/fuel ratio that comes through the exhaust