an oily puzzle - Honda Motorcycles -
General Discussion General Motorcycle Discussion. If it's related to motorcycles in any way, and doesn't fit into a more specific forum, it goes here.

User Tag List

LinkBack Thread Tools
post #1 of 1 Old 08-13-2019, 8:24 AM Thread Starter
Supporting Member
oldbastard's Avatar
Join Date: 05-10-2010
Location: Holland
Posts: 290
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 67 Post(s)
Reputation Power: 16
an oily puzzle

I've been enjoying the summer with my rebuilt 929 now 954 engine, but was a bit disappointed with the oil consumption. About half a litre per 1000km. Not enough for visible smoke, but enough to be annoying. All kinds of dark thoughts start arising, so in the end pulled the plugs and did a compression check, just to get a feel for the general state of the rings. All 4 cylinders gave 200psi, which is not bad for 12.5:1 pistons. I looked at the oil which has been in there since may, dropped a litre of it (diluted with gas) through a filter paper to see what debris was lurking. Not much, and not spectacular. A few last tiny specks of aluminium, presumably still hanging around since the break-in, no copper thank God, I even cut open the filter and flushed it out to look at what had been caught, and again, hardly anything.
So what gives? The pistons are from JE, are their oil control rings known for not being as good as Honda OE? Before the rebore the engine used virtually no oil. The spark plugs are clean and light tan colour, no oil in the threads. Oh, and I fitted new valve oil seals in the rebuild. I'd appreciate your thoughts.
oldbastard is offline  
Sponsored Links

  Lower Navigation
Go Back   Honda Motorcycles - > General Motorcycling > General Discussion

Quick Reply

Register Now

In order to be able to post messages on the Honda Motorcycles - forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
A valid e-mail address is REQUIRED. You will not have access to any site features until you activate your account using the activation e-mail that is sent to this address.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome