toci74
L plate rider.
Posts: 20
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Post by toci74 on Jan 20, 2023 14:58:22 GMT 1
if I wanted to change the original Mikuni, keeping the oil mixer, in order not to go crazy with the carburetion, which ones should I buy and with which calibration? sorry for my english but i use google translator  |
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Post by charlesypvs on Jan 21, 2023 0:12:40 GMT 1
Hi,
Depends wich pipes compression ratio etc
My 2UA with jetting done and it runs fine.
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Post by abar121 on Jan 23, 2023 16:32:47 GMT 1
28MM PWKs are very popular on here. I have a set on my 31K and they are easy to jet, plus give a load more midrange.
Lots of jetting info in here, search for PWK.
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Post by charlesypvs on Jan 23, 2023 22:37:01 GMT 1
28MM PWKs are very popular on here. I have a set on my 31K and they are easy to jet, plus give a load more midrange. Lots of jetting info in here, search for PWK. Can you connect the oil pipes to the PWKs? |
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Post by dusty350 on Jan 23, 2023 22:53:11 GMT 1
Yes, or fit to the inlets so you dont disturb the oil pipes when removing carbs   |
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Post by dusty350 on Jan 23, 2023 23:01:18 GMT 1
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toci74
L plate rider.
Posts: 20
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Post by toci74 on Jan 24, 2023 8:30:44 GMT 1
Yes, or fit to the inlets so you dont disturb the oil pipes when removing carbs AH... here in Italy if you don't use dell'Orto you're a loser  do you buy them and install them? apart from the jets there is nothing to modify or change? What is an average calibration that is used on the RD? |
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toci74
L plate rider.
Posts: 20
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Post by toci74 on Jan 24, 2023 8:36:39 GMT 1
Yes, or fit to the inlets so you dont disturb the oil pipes when removing carbs what model should I look for for the RD? Is there a right and left model? how do you do with the starter? |
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Post by dusty350 on Jan 24, 2023 8:48:24 GMT 1
I bought my Pwk's from Dave Whattam - Muttsnuts on this forum. I also bought the billet inlet from him and he drilled and fitted the oil inlets for me. Once I finished building the bike, Dave put it on his dyno and sorted the jetting for me. The carbs come with generic jets that were too rich to start off with, and Dave got it spot on with very little work. Dusty |
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Post by dusty350 on Jan 24, 2023 8:49:53 GMT 1
Carbs are not "sided", they are 2 single carbs, so both have a choke and are not physically linked to each other. |
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Post by dusty350 on Jan 24, 2023 8:55:06 GMT 1
Worth noting the Kawasaki Kr1 also uses Pwk carbs as standard fitment, and some guys use those;  20190926_114759 by dusty miller, on Flickr Dusty |
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toci74
L plate rider.
Posts: 20
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Post by toci74 on Jan 24, 2023 9:19:57 GMT 1
The problem with my frame would be the choke. I have to take the tank out every time  |
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Post by dusty350 on Jan 24, 2023 9:49:13 GMT 1
Remote, cable operated choke on one carb. Lever mounted at the handlebars. |
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Post by abar121 on Jan 24, 2023 9:57:15 GMT 1
Mine starts fine just reaching under the tank and pulling the left choke up. Cable operated as above is more refined If you are running the airbox and have a relatively stock motor, there are some good starting points for jetting in here. |
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toci74
L plate rider.
Posts: 20
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Post by toci74 on Jan 24, 2023 10:02:26 GMT 1
Remote, cable operated choke on one carb. Lever mounted at the handlebars. how much did you pay for the oil filler? do you know what maximum and minimum jet you have? |
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Post by abar121 on Jan 24, 2023 10:14:35 GMT 1
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Post by dusty350 on Jan 24, 2023 16:01:52 GMT 1
On "Betty", you really needed the remote choke cable. There was no way to reach the carb due to the frame spar being so wide;  DSCN2639 by dusty miller, on Flickr  |
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toci74
L plate rider.
Posts: 20
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Post by toci74 on Jan 24, 2023 16:54:56 GMT 1
today I went to Polini motori, I work 100 meters from them. These are their Polini branded PWK 28s. It costs €95 each. Do I have to change the intake manifold as well?  |
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Post by abar121 on Jan 24, 2023 17:13:02 GMT 1
They work fine with the stock intake. You just have to stretch the airbox rubbers around and bolt them on tight with good jubliee clips.
You can soften the rubber up with hot water and/or use a beer bottle to stretch them a little.
You can also use the stock throttle cable, with a 45 degree bend. Again, lots on this forum about that. Search for "PWK Elbows"
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Post by 123 on Jan 24, 2023 19:30:34 GMT 1
Great info lads
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Post by charlesypvs on Jan 24, 2023 23:00:41 GMT 1
They work fine with the stock intake. You just have to stretch the airbox rubbers around and bolt them on tight with good jubliee clips. You can soften the rubber up with hot water and/or use a beer bottle to stretch them a little. You can also use the stock throttle cable, with a 45 degree bend. Again, lots on this forum about that. Search for "PWK Elbows" So you can you use 45 elbows whit stock throttle cable, that's grate. Any difference having oil pipes in the inlets in stead the mikuni carb fitting? |
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Post by abar121 on Jan 25, 2023 12:27:20 GMT 1
They work fine with the stock intake. You just have to stretch the airbox rubbers around and bolt them on tight with good jubliee clips. You can soften the rubber up with hot water and/or use a beer bottle to stretch them a little. You can also use the stock throttle cable, with a 45 degree bend. Again, lots on this forum about that. Search for "PWK Elbows" So you can you use 45 elbows whit stock throttle cable, that's grate. Any difference having oil pipes in the inlets in stead the mikuni carb fitting? I don't think so, other than making it a little easier to get the carbs off. |
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