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Re: new Paso owner

Posted: Fri Jun 06, 2014 8:22 pm
by ducinthebay
Yeah, them is FCR's.
a great carb. Not the stock carbs from the SS / Monster.

Phil.

Re: new Paso owner

Posted: Fri Jun 06, 2014 9:47 pm
by higgy
FCR's are Keihin Them B mikuni flat slides

Re: new Paso owner

Posted: Fri Jun 06, 2014 10:50 pm
by ducinthebay
I stand corrected.
another option for carbing the Paso.

Phil

Re: new Paso owner

Posted: Sat Jun 07, 2014 12:14 am
by birdduck
getting some mikuni's(monster setup) from phil, because he is awesome and likes his garage space :D.. its what i had, i figured to big is better that not big enough..

Re: new Paso owner

Posted: Fri Jun 13, 2014 7:29 pm
by birdduck
what is a good idle speed for the pantah?
in its currant state, i cant get it to stay running under 1300rpms..
i have carbs coming from phil so not worried about toying with the weber anymore.
but i would like to know what some other are running..

Re: new Paso owner

Posted: Tue Jun 17, 2014 6:34 pm
by birdduck
mikuni's on and running.. need to locate to rubber grommets that seal the fuel inlet, filters and a throttle cable.. other than that jet kit installed and carbs cleaned and bolted on :) thanks phil !!
Update:
Cables acquired, filters acquired all installed.. just setting up fuel system next, the old setup was not working well with the new carbs..

Re: new Paso owner

Posted: Wed Jun 18, 2014 12:42 am
by lane1feathers
birdduck wrote:what is a good idle speed for the pantah?
1200rpm for stock. Any lower and it stalls at the lights...any higher and it doesn't sound mean n lumpy :lol:

I have my fuel delivery set up as follows;
Petcock > fuel filter > fuel pump > carb. (Mikunis)

I have removed my return line to tank and blocked it off. I have no issues with overflow or starvation. Some will recommend keeping it (or installing one if not there already) as pump can overwhelm float arms over time. When I had a return line in my system it had a restrictor jet in the line (either from factory or P.O.)
* I only removed the return line initially because I was taking the tank on and off all the time when I was doing the mikuni conversion. In hindsight a small container with fuel delivery hose would have been much easier :wacko: you can get these on eBay *

I have run with vacuum pump and also electric pump. They both work fine. Vacuum pump will relieve your charging system as it has no power drain. It will require inlet tubes with nipples though so you can attach vacuum hoses (one to your digiplex and the other to your pump. If you only have one tube with a nipple and the other blank, don't stress as you can plumb your fuel pump line into your digiplex line with a T piece. This is how I first set it up as I had the wrong size nipples for the other tube. It works. :thumbup: )

Re: new Paso owner

Posted: Wed Jun 18, 2014 1:00 am
by birdduck
hmm mine was pushing fuel out of the inlet seals.. i am assuming there just shot..

Re: new Paso owner

Posted: Wed Jun 18, 2014 9:13 am
by paso750
Lane, you`re in the P750 forum. ;) Only very few 750s had a Marelli Digiplex ignition. Most had the Kokusan ignition just like the later carbed Supersport and Monster or Cagiva Elefant.

Re: new Paso owner

Posted: Wed Jun 18, 2014 11:36 am
by lane1feathers
....whoops sorry.. :smoke:

Re: new Paso owner

Posted: Wed Jun 18, 2014 11:38 am
by lane1feathers
...that's 14 minutes of my life I'll never get back :mad:

Re: new Paso owner

Posted: Wed Jun 18, 2014 4:35 pm
by birdduck
going to ditch the fpr and redo my fuel lines tonight.... everything else is ready to go..
and just a heads up for anyone that wants to know a 2002 honda crf450 throttle cable will work almost
perfectly, the only flaw is that the pull barrel adjuster is a tad to small to thread in but large enough
that it doesn't flop around.. 22$ at my local powersports shop, filter are uni's and where 15$ each.

Re: new Paso owner

Posted: Wed Jun 18, 2014 4:49 pm
by fasterdammit
Thought I'd chime in on the carb set up, since I swapped my '88 over to a pair of Mikunis last summer (with lots of remote help and a custom-made cable bracket from Gerhard).

I found a connected pair from a mid-90s SS900 on ebay for ridiculously cheap ($60USD) a couple years ago. I fit them with a Dynajet stage 3 kit for the SS, because I installed K&N pod filters (P/N SN-2530) and I already had a pair of Cobra F1 exhaust cans on there (and they're pretty free-breathing). The connected pair simplified the set up in that I could use the throttle tube from a Monster/SS & that bike's stock twin-cable set up, as well as replicate that fueling process:

I ditched the Paso's stock electric fuel pump in favor of the Mikuni vacuum-fed pump from a Monster, and I routed the fueling from tank > filter (canister-type from a Monster, left side of bike) > fuel pump > carbs. I mounted the vacuum pump on the right side of the bike (clutch side) in a V in the frame, and 'power' it from the nearest intake manifold.

I swapped the manifolds for a pair from a SS as well; I wound up with a pair from a 900, which are slightly longer than the pair from a 750, which twist the carbs slightly, but that's a non-issue. Actually, I was happier with that, because I think made more room for the pod air filters.

While I obviously ditched the airbox, I kept the crankcase breather box, which lives right in front of the battery, under a short frame cross-member. That previously fed the Weber's airbox, so I wound up installing a small K&N crankcase breather filter instead. That's secured to the frame, towards the front of the bike on the left side.

I also added the triangular 'null air' box from a Monster/SS, which fits nicely into one of the upper V's in the frame (right side) into which the carbs 'breathe'. You'll see the set up in any pre-99 Monster/SS parts explosion. Each carb has an air line (with a one-way valve?) that blows into a grey plastic box.

Besides the K&N items, 2 new throttle cables, air/fuel lines, fuel filter, intake gaiters and necessary clamps - everything was picked up from ebay and shops like ducpower/guzzitech. The air filters I found cheapest on Amazon; the cables, fuel filter & intake gaiters came from Ducati. All told I think I spend under $150USD, and several hours horsing around.

And the bike is transformed. I tried a number of alternatives with the Weber, although admittedly not the solution Jon has detailed :| but I'm extremely satisfied now. The bike has never run this well. Starts like a champ, warms up quickly, idles comfortably around 900-1000 and pulls hard everywhere with no stutters or plateaus.

Re: new Paso owner

Posted: Thu Jun 19, 2014 3:20 am
by birdduck
just have to thank phil.. if he was here i would give him a hug..!!!
bike is a new machine, throttle reponse is perfect, acceleration is smooth and there is no hesitation..
install is clean and looks good, fuel system working perfectly and i fixed my leak!

Re: new Paso owner

Posted: Thu Jun 19, 2014 4:03 am
by birdduck
This is a photo I took just before embarking on my mikuni swap.Image