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Getting rid of power jets!!!


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WhiteBaitNZ

 
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Getting rid of power jets!!!

Fri Oct 10, 2008 5:50 am » Post: #1 » Download Post

Can someone point me in the right direction of a how to guide of removing the power jets from my MC21!!! Laughing

I had a look in the tuning section but a bit more detail would be great!! Rolling Eyes
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RichG

 
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Fri Oct 10, 2008 6:23 am » Post: #2 » Download Post

First advice, you need a good fitting screwdriver for the power jet cover screw. If its not, you risk damaging the screw head. The cover screw could be in there really tight, give the screwdriver a tap to relieve some of the tension in the thread. I found a second pair of hands useful at this stage to hold the carbs so I could apply sufficient pressure to the screwdriver myself.

With this removed you need another good fitting screwdriver for the power jet itself, which could also be in there tightly. If your in any doubt, stop, and source the right tools. Other than that, its not at all complicated.
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MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30
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WhiteBaitNZ

 
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Fri Oct 10, 2008 6:35 am » Post: #3 » Download Post

I found out how tight the Power Jets are in there........I got out the real screwdriver after that!

What do you do with the hoses to the solonoids an stuff??
I notice that one of the solonoids has a plug on it! What do you do with that??? Or do you just rip that out??? I'm good at that!!!
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WhiteBaitNZ

 
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Fri Oct 10, 2008 8:52 am » Post: #4 » Download Post

Also with the base settings it give a position for the needle as 4th is this counted from the top or from the bottom??
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fontyyy

 
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Fri Oct 10, 2008 7:26 pm » Post: #5 » Download Post

Put it in the middle, it's about right Wink
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WhiteBaitNZ

 
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Sun Oct 12, 2008 3:15 am » Post: #6 » Download Post

SOOOOOOOO I put the power jet blank in......After having to drill one out cause I ****** it with the screw driver!!!!

The base settings are all for open carbs so I thought WHAT THE HELL....I'LL GIVE THAT A GO!!!!

I got smoked down the street by a kid on a scooter, It's that slow!!!

So This is what I have!

MC21 NSR250 running on pre-mix.
Standard pipes and chambers ( Untill my JHA ones show up!!! )
Wire splice.

What I would like to run is the little trumpet bits that go into the standard airbox with some stocking over them (PRETTY MUCH OPEN CARBS) Can some one give me a ball park figure of MJ size cause the kit I got goes down to a 180 and that (SEEMS) to be too big!

The bike runs really flat like it is getting way to much gas!!!

I'm racing this coming saturday and a now have a big bald spot on the left side of my head where I pulled my hair out and I think a may have got one of those stress veins in the forehead as well!!!!........Not a relaxing weekend!!!!
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fontyyy

 
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Sun Oct 12, 2008 9:20 am » Post: #7 » Download Post

Andy wrote:As I have said a thousand times, jetting WILL NOT be discussed in the free Discussion Forum.

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mr_penguin

 
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Sun Oct 12, 2008 8:22 pm » Post: #8 » Download Post

fontyyy wrote:
Andy wrote:As I have said a thousand times, jetting WILL NOT be discussed in the free Discussion Forum.


I might be blind... But I have been looking at this site for years and I have
never seen a way to become a "non free member"

So hows it done so I can see the rest of the action and talk about jetting my
bike !.

Regards
Ian
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Andy
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Sun Oct 12, 2008 8:46 pm » Post: #9 » Download Post

There's a link at the top of the page "Subscription" or you can go to: http://www.nsr-world.com/supporter/

It's only a recent thing. The Members pages of the Main Site currently have nothing to do with Forum Subscription, as stuff like the Workshop Manual is still far from completion.
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WhiteBaitNZ

 
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Mon Oct 13, 2008 3:01 am » Post: #10 » Download Post

OOOOOKKKKKKKKAY!!!!

Let me rephrase that one!

Can anyone give me some help I have jets between 180 and 200 and the bike listed above.

I'm not asking for jetting advice just a "YOU NEED SMALLER JETS" or a YOU NEED TO PUT YOUR JHA PIPES ON BEFORE YOU MOVE UP TO THESE JET SIZES"

I hold one one resonable for the result I NEED to get it going for racing this Saturday!!!!

I will become a member as soon as my bank balance doesn't have that little word (debit) at the end of the number!!! SORRY ANDY!!!!!
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Andy
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Mon Oct 13, 2008 3:14 am » Post: #11 » Download Post

Maybe someone will PM you.

It's not that you personally may get **** and/or try and hold me or anyone else connected with NSR-WORLD.COM/nsr250.net liable, but we've been threatened with legal action in the past by retards that are incapable of disassociating posters comments and/or opinions from that of the owners and contributors of these domains.
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WhiteBaitNZ

 
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Mon Oct 13, 2008 6:56 am » Post: #12 » Download Post

I more that understand Andy!

There are retards all over the world unfortunately the survival of the fittest rule no longer applies due to the advancement in medicine!! Smile

Once my bike is going and the bank balance is looking healthy I'm be joining the VIP's in the members section! NSRWORLD and saved me heaps of money by giving me the knowledge to do the work myself!!!

We now have a shop with the Dyno now so that will be the MC21's early Christmas present!!! 4 days of racing in a row in december!! 26th, 27th, 28th and a 1 hour endurance on the 29th............the ultimate NSR teat!!!
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WhiteBaitNZ

 
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Mon Oct 13, 2008 7:50 am » Post: #13 » Download Post

test.....not teat!!!! whoops
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Andy
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Mon Oct 13, 2008 2:54 pm » Post: #14 » Download Post

Oh, I thought you meant I was the ulimate NSR teat! Laughing
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mr_penguin

 
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Wed Oct 15, 2008 7:44 pm » Post: #15 » Download Post

Back on the subject of getting rid of power jets.... without talk of Jet sizes ! Sad

Sometime back I had a mc18 racer to work on.. It had no air solenoid or Y adapter or tubes
on the carbs. other than the gas line !..

Am I right in thinking with blocked power jets I can remove all the tubes and solenoid etc etc and just block of the hook up ports for them on the carbs ?..

Regards
Ian
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