Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


Engine rattle

 Reply to topic
Bike Chat Forums Index -> The Workshop Goto page Previous  1, 2, 3, 4
View previous topic : View next topic  
Author Message

Ayrton
World Chat Champion



Joined: 02 Sep 2010
Karma :
PostPosted: 22:35 - 20 Jan 2020    Post subject: Reply with quote
Ok so we've found where all that metal actually came from Laughing

https://i.imgur.com/pcD3xHO.jpg
Any ideas on what would have caused this? Lack of oil like mentioned earlier?

He's looking at getting a new engine, but would it be a bad idea to repair this one if I can find a new barrel and piston and theres no further damage? I've yet to split the cases to see what all those pieces has done as I'm waiting for my castle nut socket for the clutch.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Pete.
Super Spammer



Joined: 22 Aug 2006
Karma :
PostPosted: 22:47 - 20 Jan 2020    Post subject: Reply with quote
Pete. wrote:
....could be the piston skirt breaking up.....




Ayrton wrote:
Ok so we've found where all that metal actually came from Laughing

https://i.imgur.com/pcD3xHO.jpg
Any ideas on what would have caused this? Lack of oil like mentioned earlier?

He's looking at getting a new engine, but would it be a bad idea to repair this one if I can find a new barrel and piston and theres no further damage? I've yet to split the cases to see what all those pieces has done as I'm waiting for my castle nut socket for the clutch.


That engine is all but scrap. Look at the colour of the conrod, you can't build a new top end on top of a rod that's been so hot it's turned black. I'm guessing the little end has heat-seized cooking the rod and preventing the piston from rotating thus putting a side load on the skirt. It's splash-fed so yeah if it's been low on oil that's the cause.
Cut your (his) losses and find a replacement.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

Riejufixing
World Chat Champion



Joined: 24 Jun 2018
Karma :
PostPosted: 23:18 - 20 Jan 2020    Post subject: Reply with quote
Ayrton wrote:
He's looking at getting a new engine, but would it be a bad idea to repair this one if I can find a new barrel and piston and theres no further damage? I've yet to split the cases to see what all those pieces has done as I'm waiting for my castle nut socket for the clutch.

Not a bad idea, but is it worthwhile? My guess is that you'll be looking at:

Main bearings.
Crankshaft assembly.
Piston, rings & gudgion pin.
Possible barrel.

A whole lot of careful cleaning of the rest of the thing in solvent and preferably blowing dry with an air line.

Edit: It looks as though the cost of new parts considerably exceed the cost of a used engine for a "CBR125". So there you go.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Ayrton
World Chat Champion



Joined: 02 Sep 2010
Karma :
PostPosted: 01:15 - 21 Jan 2020    Post subject: Reply with quote
Thanks that makes sense, any kind of repair would almost come to the cost of a engine anyway. He's got his module 2 next month so only really cares about getting it running again.

I think he's learnt a couple of lessons here about keeping regular maintenance checks and not being so damn lazy when it comes to inspecting problems.
 Back to top
View user's profile Send private message You must be logged in to rate posts
Old Thread Alert!

The last post was made 4 years, 96 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT + 1 Hour
Goto page Previous  1, 2, 3, 4
Page 4 of 4

 
 You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.08 Sec - Server Load: 0.4 - MySQL Queries: 17 - Page Size: 43.8 Kb