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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #1  
Old 4 Mar 2010
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Quote:
Originally Posted by wolfzero View Post
the motad headers are not just polished stainless steel they are coated with a very strange chrome plate thats why they go that funny colour mine did exactly the same
Aha! That explains it. When I got them I thought the s/s looked a bit funny and not like I expected. It looked a bit 'cheap' compared with OE stainless systems. Now you mention it, it did look to be plated with something.

Oh well, with all the trouble I had taking the old ones off, I'm sure as hell not going to change them now
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Old 5 Mar 2010
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Good to hear all your replies.

Kedo says the german vehicle regulation it does not comply with is
StVZO, §§19, 30, 49 //97/24 EWG. Now everything is clear

I am going to get my bike tested on Dyno as it is standard and then again after I have a Kedo header pipe, modified air box, air filter, rejetted, muffler.

Which air filter should I get, K&N?
Which road legal muffler? Stainless Steel hopefully.
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Old 5 Mar 2010
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I've used a pipercross (piperx) foamfilter, i know nothing about its ability to flow and stuff like that, just wanted a foamfilter since i ride a lot offroad.

Are you gonna rejet it yourself?

When you rejet for the opened up system, go for a #48 idle jet (stock is 46 and 48 is the next step) raise both needles one notch, and stop there. That should be really close.

Try to use same chainkit/gearing, same tires and stuff, so you dont have to many different things that can effect performance.

Please share the results with us.
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Old 7 Mar 2010
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There is a company advertising that tests the bike on the dyno and then offers to rejet.

But as I am doing this over a period of time as finances allow after the dyno I will get the kedo header pipe. Next air filter, tail pipe. All of which I will install myself.

I have never looked inside a carb and it scares me a bit to think I could really mess things up.
So if I feel it is beyond me I will as the garage to install the jets before testing on the dyno again.

Thanks for the info regarding the jet sizes.
I see the Pilot jet is 43F 14343 23 #46 so will go for #48

So I should leave the main jets as they are?
By raise the needles one notch do you mean adjust the existing needle sets, #'s 47 and 48 in the parts catalogue. 4PT 149OJ 10 & 4PT149OJ 00

I will be happy to share the before and after results.
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Old 7 Mar 2010
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Yes, raise the stock needles in both carbs (lover the clip)

If you get someone else to rejet your carb, make sure you know which jets they have used.
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Old 7 Mar 2010
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Quote:
Originally Posted by Jens Eskildsen View Post
Yes, raise the stock needles in both carbs (lover the clip)
I think he means lower the clip

Lovers are something else!
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  #7  
Old 8 Mar 2010
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Well, i looooooooove my bike
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