Back to the topic: there're many post about mikuni swapping and air filtrer solution, including mod to the original airbox, longer mainfolds and anything else. Just need to make your own search
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| mikuni carb conversion? http://ducatipaso.org/forum/viewtopic.php?f=1&t=5828 |
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| Author: | aaxiss [ Wed Feb 06, 2013 1:03 pm ] |
| Post subject: | mikuni carb conversion? |
I've been around lurking just reading up, ( I have a Ducati 750 p ) with 4k original miles, I want to do the mikuni swap. Anyone have any pictures around showing how the carbs look once installed? Don |
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| Author: | paso750 [ Wed Feb 06, 2013 1:57 pm ] |
| Post subject: | Re: mikuni carb conversion? |
| Author: | aaxiss [ Wed Feb 06, 2013 7:50 pm ] |
| Post subject: | Re: mikuni carb conversion? |
Great, that you so much . Really gives me an idea of how much room I'm going to have for air filters, any suggestion on what I should use. On the old Weber I had the low profile k & n set-up, but obviously that won't work. Maybe a couple of the ball type foam uni filters? Thanks again |
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| Author: | aaxiss [ Wed Feb 06, 2013 7:59 pm ] |
| Post subject: | Re: mikuni carb conversion? |
I've got a 749 frame sitting around here somewhere, I wonder if the 2 valves motor would fit. Hmmmm. Allot more room under the tank on the 749 for sure. What I'm doing is converting from a conventional bike to a reverse trike like a can-am spyder.do no too concerned with keeping it pure Paso per say. Cheers |
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| Author: | ducapaso [ Wed Feb 06, 2013 8:13 pm ] |
| Post subject: | Re: mikuni carb conversion? |
Back to the topic: there're many post about mikuni swapping and air filtrer solution, including mod to the original airbox, longer mainfolds and anything else. Just need to make your own search
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| Author: | paso750 [ Wed Feb 06, 2013 9:27 pm ] |
| Post subject: | Re: mikuni carb conversion? |
you can use UNI filters UP4060A (angled pods, 10cm high) or the UNI filter UP6060A (same but 15cm high). I`d take these if you have no airbox. These are K&N SN-2530, once posted on the forum Or you can modify the original airbox G. |
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| Author: | koko64 [ Wed Feb 27, 2013 10:05 pm ] |
| Post subject: | Re: mikuni carb conversion? |
Would a CV carbed M750SS or M900/SS airbox (with battery box cut off) fit? |
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| Author: | higgy [ Thu Feb 28, 2013 1:30 am ] |
| Post subject: | Re: mikuni carb conversion? |
FYI any CV carb is a performance downgrade 
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| Author: | koko64 [ Thu Feb 28, 2013 2:24 am ] |
| Post subject: | Re: mikuni carb conversion? |
| Author: | aaxiss [ Thu Feb 28, 2013 9:57 am ] |
| Post subject: | Re: mikuni carb conversion? |
Working carbs vs non-working = upgrade
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| Author: | koko64 [ Fri Mar 08, 2013 9:53 pm ] |
| Post subject: | Re: mikuni carb conversion? |
Doug Lofgren got good performance from the 38 CV carbs with his mods. He doesnt do them anymore concentrating on FI. He taper bores them, trims the throttle shaft and changes the emulsion tube. He has them working nearly as well as FCRs, but without the snappy response of course. I am going port a set. I plan to taper the opening, smooth the throttle shaft and knife edge or tear drop the butterfly to reduce turbulence on the "air side". I will port the manifolds and increase their diameter. I have mucked around with these things before but plan to go a step further. |
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| Author: | higgy [ Sat Mar 09, 2013 12:06 am ] |
| Post subject: | Re: mikuni carb conversion? |
| Author: | koko64 [ Sat Mar 09, 2013 1:13 am ] |
| Post subject: | Re: mikuni carb conversion? |
| Author: | koko64 [ Sun Mar 10, 2013 2:23 am ] |
| Post subject: | Re: mikuni carb conversion? |
If I find a set of used FCR39s for a good price, I will put the CV38s back in the parts box  .
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| Author: | koko64 [ Mon Mar 11, 2013 11:12 pm ] |
| Post subject: | Re: mikuni carb conversion? |
I did some work on some Mikuni CV 38s yesterday. I disassembled the carbs and gave them a good clean. I "ported" a bad sharp step in the transition from the carb bellmouth to the throat in front of the butterfly. You cant see it but you can feel it with your fingers. I wanted to promote a smooth airflow into the carb to reduce turbulence which may contribute to CV piston/slide "flutter". I also fitted oem heavy slide springs to help reduce this slide flutter which affects throttle response. I have tried various springs and gone back to the oem springs for this reason. I fitted new Factory Pro needle jets/emulsion tubes. I have set the float to 14mm, as they are often out of spec from the factory. I will consult a friend who tunes race cars regarding the throttle butterfies. You can "knife edge" them, "tear drop" (like an airplane wing) them, or just smooth the sharp edges a little, so I wil consult this guy. I am losing motivation to go the "full monty" on these carbs as a friend may be selling me some FCR39s (and some 900SS cams and 36 degree flywheel). So we shall see. |
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