Hi Tim,
Forgive the lateness in my reply. I was told that the transmission is bad because the bike is shifting out of gear and it's also difficult to shift into gear. that being said, it could be the drum shifter (as I understand it, although I haven't taken the bike apart to figure out just yet).
I understand what you're saying about keeping the engine stock, that having power issues when my girlfriend is on the back and I think I might have to put in the Chinese engine. I think I'll keep the old engine, just in case this one doesn't work out!
thanks again
Tom
--- In Honda-C70@yahoogroups.com, "louiethespelunker" <louiethespelunker@...> wrote:
>
> Hello Tom,
> I have ridden my '82 C70 for 5 years and nearly 20,000 miles now with the stock engine. I have used it to commute almost daily for 4 years. I plan my routes so that I avoid roads with a speed limit over 45 mph. I would personally keep it stock unless you have no alternative lower speed routes to get where you need to go. I have thought several times about upgrading to the 120cc or 140cc Lifan but the practically flawless reliability and 100-110 mpg of my C70's little stock engine always wins out in the end.
>
> You mentioned keeping the engine but replacing the transmission. Is your transmission bad?
>
> My '82 had some shifting/popping out of gear problems when I bought it. I solved that along with an engine rebuild for less than $300 (thanks Dr.Atv) 4 years ago.
>
> Tim
> --- In Honda-C70@yahoogroups.com, "Tom" <wynnjunk@> wrote:
> >
> > Flash quiz hotshots!
> >
> > Assuming I'll want to keep my 1983 C70 for many thousands of miles, would you rather:
> >
> > 1. keep the existing 70cc stock engine (15000 miles, rebuilt top end and clutch) but replace the transmission (taking the whole engine apart then reassembling it).
> >
> > or
> >
> > 2. install a Lifan 120cc plug-and-ride motor replacement - the one DrATV advertises to make "hyper Passports"
> >
> > http://dratv.com/120cceengine.html
> >
> > (assuming a muffler mount adjustment, simple rewiring, footpeg reassignment etc.)
> >
> > I'd like to hear thoughts from the intelligensia.
> >
> > Ciao,
> > Tom
> >
>
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.html
