Hi Thomas:
Glad to help – as said, they are just suggestions/possibilities as to what may ail your C70.
I'd love a 4 speed motor - I've got two more CT70's to build in the future – but unless you live in southern Ontario, getting it here might prove problematic, whether shipped or otherwise. I appreciate your offer, however
William Strong
From: Honda-C70@yahoogroups.com [mailto:Honda-C70@yahoogroups.com] On Behalf Of thomas earsley
Sent: April 21, 2011 3:09 PM
To: Honda-C70@yahoogroups.com
Subject: RE: [Honda-C70] Engine kicks over but no compression
Thanks william I just got this passport 70 and as is cond but it kicked over no compression. do you need another ct 70 engine I have one here its a 4 speed clutch Thomas
--- On Thu, 4/21/11, William Strong <wstrong@mountaincable.net <mailto:wstrong%40mountaincable.net> > wrote:
From: William Strong <wstrong@mountaincable.net <mailto:wstrong%40mountaincable.net> >
Subject: RE: [Honda-C70] Engine kicks over but no compression
To: Honda-C70@yahoogroups.com <mailto:Honda-C70%40yahoogroups.com>
Date: Thursday, April 21, 2011, 12:03 PM
Have you torqued down the head-bolts lately, and if so, is there a
possibility they've been over-torqued - pulling the stud out of the head or
snapping it?
Just a wild stab in the dark - I've got a CT70 motor sitting on the bench
that had me scratching my head for a bit, until I figured out that the PO
pulled the stud out of the case by over-torquing it, and then epoxied the
stud back in place and sold it on to me .. (doh!) .. ran for a little bit,
and then hard-starting, and finally no compression as the epoxy gave way -
just whistles out the head gasket when it's kicked over.
As I said, just a stab in the dark, something to check in terms of the motor
compression. Oil/gas leaks around the top-end gaskets would be a dead
giveaway, right off the bat.
Otherwise - check valve clearances to make sure one isn't hanging open and
banging up against the piston (the sound you might be hearing on kick-over?)
Easy enough to pull the top end off and see what's what, in any case.
William Strong
From: Honda-C70@yahoogroups.com <mailto:Honda-C70%40yahoogroups.com> [mailto:Honda-C70@yahoogroups.com <mailto:Honda-C70%40yahoogroups.com> ] On Behalf
Of thomase
Sent: April 21, 2011 1:46 PM
To: Honda-C70@yahoogroups.com <mailto:Honda-C70%40yahoogroups.com>
Subject: [Honda-C70] Engine kicks over but no compression
is the auto clutch out of adjustment is that why the compression is gone.
Thomas.
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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
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