Normally it is cheaper (might be more time consuming) to take the head off
and take it to a shop to have it inspected and replace only the parts that are worn.
In a normal over rev the intake valve which is larger then the exhaust valve, will
hit the piston and be bent, some times both valves are bent.
At the least you will need the gaskets for removing the head, & the intake manifold.
Bill
Portland OR
--- On Fri, 7/15/11, tdupes1456 <tdupes1456@yahoo.com> wrote:
From: tdupes1456 <tdupes1456@yahoo.com>
Subject: [Honda-C70] Re: shifted down when shouldnt have
To: Honda-C70@yahoogroups.com
Date: Friday, July 15, 2011, 4:44 AM
thanks for in put Bill what exactly is rebuilding a head and what parts do i need to find??
--- In Honda-C70@yahoogroups.com, william belleau <wjbelleau@...> wrote:
>
> A over rev usually bends a valve when the valves float and the piston hits it.
> Sounds like you need a head rebuild.
> Bill
> Portland ORÂ
>
> --- On Thu, 7/14/11, tdupes1456 <tdupes1456@...> wrote:
>
>
> From: tdupes1456 <tdupes1456@...>
> Subject: [Honda-C70] shifted down when shouldnt have
> To: Honda-C70@yahoogroups.com
> Date: Thursday, July 14, 2011, 5:10 AM
>
>
> Â
>
>
>
> well my 1971 c70m was running great untill the other day when i down shifted by accident . Well needless to say the engine screamed and the rpms went way up for about 3 sec. but right after this the bike runs different it stalls all the time and is harder to start any ideas of what may have happened or what to do??
>
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
[Non-text portions of this message have been removed]
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

No comments:
Post a Comment