Jets

So they dont get muddled and lost in the directory, please post your tuning questions here.

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RedexRobB
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Jets

Post by RedexRobB » Mon Aug 25, 2008 11:07 pm

Where can i buy them from?

Looking at dynojet and they want over 100 quid for a set, but i only wanna buy 4!

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Re: Jets

Post by zimm » Mon Aug 25, 2008 11:18 pm

i got mine from here

http://motorcycleproducts.co.uk/

£11.63 for a set... they send you 5 so you've got a spare too :)

they ARE different to stock.. slightly, they are deeper/taller however you put it .. work though.. i've got the 105's in my H1

dynojet will want 100+ for a "kit" which is IIRC, 2 sets of jets.. diff needles, and ..um .. oh, some washers and maybe allen bolts to replace the crosshead ones that hold the float bowls on. waste of money IMO. for the same outlay you could get a dyno run, change the jetting, and another dyno run to confirm its worked :)

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Re: Jets

Post by RedexRobB » Tue Aug 26, 2008 9:51 am

Cheers Zimm, i thought you'd be the man to answer this one! :lol:

Gonna go for #102's to complement the Beet system as suggested by you, and see how it goes. :smt001

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Re: Jets

Post by zimm » Tue Aug 26, 2008 10:07 am

102's sound about right with a standard airbox.. mine was rich with 105's till we ripped the trumpet off the airbox .. then it went lean, so im going to go larger again .. if it ends up rich i can always make more holes in the airbox :)

have noticed though that cylinders 2 and 3 seem to be running hotter (the headers are bluing up way more than 1 and 4) so will be trying staggered jetting with 1 and 4 on 107's with 2 and 3 on 110's.

i've come across staggered jetting a few times on zxr's that have been dynoed, so, we'll see ..

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Re: Jets

Post by zimm » Tue Aug 26, 2008 10:09 am

oh yeh ..

lol, if you'd asked last week you could have had some 102's for free .. lol... posted them to another forum member a few days ago

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Re: Jets

Post by RedexRobB » Tue Aug 26, 2008 10:24 am

lol, never mind! Cheers for the advice tho. Cant decide wether to stagger them or not myself. Obviouly theres the cooling issue so may just do it to keep things as they were if you see what i mean. So if i was to do that that would make 1 and 4 #102, and 2 and 3 #104, right?

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Re: Jets

Post by zimm » Tue Aug 26, 2008 11:03 am

they go up in steps of 2.5 but they dont label them as such ..

so its,

100
102.5
105
107.5
110

etc etc ..

you could try 100's and 102's, it'll be better than whats in there, and avoid the possibility of going too rich with 102's/105's

a quick power run with A/F readout should only cost ~£25 to give you an idea of which way to go from there.

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Re: Jets

Post by masterofinsanity » Tue Aug 26, 2008 11:07 am

how do you know what size the jets are? are they marked?
Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.

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Re: Jets

Post by zimm » Tue Aug 26, 2008 11:09 am

yep..

Image

sometimes labelled on the side .. depends ..
Last edited by zimm on Tue Aug 26, 2008 11:10 am, edited 1 time in total.

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Re: Jets

Post by RedexRobB » Tue Aug 26, 2008 11:10 am

yeah they are Baz, ones int here at the mo are marked on the side.

Yeah i noticed they go up like that and thought perhaps 100 and 102.5's to avoid going rich.

Is it me or will i have to buy 2 sets of jets to do that as they dont seem to sell them individually......

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Re: Jets

Post by zimm » Tue Aug 26, 2008 11:12 am

try giving them a ring, or emailing them, they only pluck them from a pot and put them in a bag ..

order online, and yeh, you'd need 2 sets ..

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Re: Jets

Post by zimm » Tue Aug 26, 2008 11:18 am

if you dont have any joy, try here ..

http://www.allensperformance.co.uk/index.html

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Re: Jets

Post by RedexRobB » Tue Aug 26, 2008 11:38 am

wicked, thanks zimm. :D

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Re: Jets

Post by benso1982 » Wed Oct 29, 2008 2:01 pm

hi guys! i'm from Italy! i need the best settings for the dynojet kit stage 1 i have on my zxr400 L1. i also have a k&n air filter and a complete Micron race system exhaust. can you help me? thank you very much! bye!

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Re: Jets

Post by zimm » Wed Oct 29, 2008 2:03 pm

benso1982 wrote:hi guys! i'm from Italy! i need the best settings for the dynojet kit stage 1 i have on my zxr400 L1. i also have a k&n air filter and a complete Micron race system exhaust. can you help me? thank you very much! bye!
put it on a dyno

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