To: Honda-C70@yahoogroups.com
From: tch@peoplepc.com
Date: Wed, 5 Oct 2011 19:12:18 -0400
Subject: Re: [Honda-C70] After market carb
Clogged slow jets can be cleaned using an electrosonic parts cleaner used for jewelry and such. They're available at ebay from time to time. Pour in the carb cleaner of your choosing (I use Gunk), turn it on and let the vibrations/cleaner do their thing. It's not cheap, but it's effective. I have 23 motorcycles, so I can justify the cost. Fuel quality these days, partly because of Ethanol, is not what it used to be.
-----Original Message-----
>From: hcheatham@austin.rr.com
>Sent: Oct 5, 2011 6:36 PM
>To: Honda-C70@yahoogroups.com
>Cc: Joseph Pafumi <joeypafumi@yahoo.com>
>Subject: Re: [Honda-C70] After market carb
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>Did you ever try the Wincycles carb with the jets that it came with? I was tempted to swap for my original but was told by Win that the method used to put a number on their jets was different from Honda.---- Joseph Pafumi <joeypafumi@yahoo.com> wrote:
>> Plug .25
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>> Joey Pafumi
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>> --- On Wed, 10/5/11, hcheatham@austin.rr.com <hcheatham@austin.rr.com> wrote:
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>> From: hcheatham@austin.rr.com <hcheatham@austin.rr.com>
>> Subject: Re: [Honda-C70] After market carb
>> To: Honda-C70@yahoogroups.com
>> Cc: "Joseph Pafumi" <joeypafumi@yahoo.com>
>> Date: Wednesday, October 5, 2011, 3:16 PM
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>> I put one of these on mine and it works well. Did you set the needle in the middle position? Plug reading?---- Joseph Pafumi <joeypafumi@yahoo.com> wrote:
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>> > The carb was installed with #88 main jet from my original carb.The problem was,the new carb leaked from the bowl due to a defective bowl and how the gasket fit as well.I was very frustrated.I took the original bowl and applied to the new carb.No leak.The problem is it idles smooth,ran smooth,but didn't go over 35mph.My first indication something was wrong was when it started cold with no choke.I took the new carb off and put it back together and I am shipping it back to wincycles.I have decided to by a used slow jet,which I am not sure is gummed up as my original was,(I will know when I receive it) and install it in my original carb.I will keep you posted.I will have this bike running 45MPH again if it is the last thing I do.I will not drill this one out as my mechanic did to save time.If this doesn't work I will search for another carb. Joey
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>> > Joey Pafumi
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>> > --- On Wed, 10/5/11, gandalf@sonic.net <gandalf@sonic.net> wrote:
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>> > From: gandalf@sonic.net <gandalf@sonic.net>
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>> > Subject: Re: [Honda-C70] After market carb
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>> > To: Honda-C70@yahoogroups.com
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>> > Date: Wednesday, October 5, 2011, 1:40 PM
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>> > Perhaps the rule of thumb should be if you take an old carb out and put a new aftermarket one in, you should carefully clean and inspect the jet from the old one and install it in the new one (assuming it wasn't drilled out).
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>> > (imagine a cute or dirty tagline here)
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>> > On Wed 05/10/11 12:55 PM , william belleau wjbelleau@yahoo.com sent:
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>> > > One of the problems of size is that some carb manufactures use a # system
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>> > > that is not based on inside diameter of the jetin ether MM or inchs. It is just a number assigned to a flow of fuel. The
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>> > > other problem is the shape of the jetfrom the large size as it necks down and then flows back to a larger
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>> > > diameter. This shape of the translation can also effectthe flow of the fuel so even thought the hole dia of the jet is one size
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>> > > the total flow could very well be less then a different jetwith a smaller dia hole. Also the finish of the jet can have an effect of
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>> > > flow, drilling a jet oversize can at times make it flow lessthen it did when original in size. A few manufactures here in the US of A
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>> > > that do alot of work with car carburators have done flow tests with some very fancy flow benches and have reported studys or
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>> > > this very thing. They have also run engines ondynos and documented the loss of HP with just a change in jet size or
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>> > > drilling out a jet and reinstalling it.Bill
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>> > > ________________________________
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>> > > From: myron andrews rews13@hotmail.com>To: hon
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>> > > da-c70@yahoogroups.comSent: Wednesday, October 5, 2011 12:33 PM
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>> > > Subject: RE: [Honda-C70] After market carb
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>> > > Joey : You & tch may have found the reason some people
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>> > > have reported good results & others poor results from after market
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>> > > carbs. My oem carb & dratv Sheng Way both have #88 main jets . A
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>> > > correct carb match. How ever my Chilton Big Book lists the english
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>> > > model c70 & c70m as having a #75 main jet . The #72 jet is listed as
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>> > > fitting CL70,065/M &CT90 . Apparently Honda uses different jets
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>> > > in different parts of the world . So a supplier might say " sure this
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>> > > carb fits a C70 here in China " & be wrong for USA/Canada
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>> > > market. The only thing that might keep you from using your old jet in
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>> > > the new carb is a slight difference in the slide needle taper & length
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>> > > that could affect midrange performance. This may help others solve
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>> > > their carb problems . Good Job !!!! Baby Huey
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>
>------------------------------------
>
>C70 Passport Not Running Right?
>1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
>1970-73 C70 Troubleshooting Guide:
>http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
>1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
>1980-81 C70 Troubleshooting Guide:
>http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
>1982-83 C70 Troubleshooting Guide:
>http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
>
>1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
>1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
>
>More resources for C70 Passports and Cubs:
>http://www.shlaes.com/Vehicles/Scooter.htm
>http://www.velodrome.com/HondaC70/HondaC70.htmlYahoo! Groups Links
>
>
>
TC
________________________________________
PeoplePC Online
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[Non-text portions of this message have been removed]
------------------------------------
C70 Passport Not Running Right?
1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs:
http://www.shlaes.com/Vehicles/Scooter.htm
http://www.velodrome.com/HondaC70/HondaC70.htmlYahoo! Groups Links
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