EPIC Motor Failures

twotakt · World Chat Champion Joined: 25 Oct 2007 Karma :

Post yours with a diagnosis of what went wrong (if known), I'll start:

ZXR400 L1 Diagnosis: Been said, Mushroomed valve head = Closed Clearance = Chipped top of stem = Collets walking = death:

https://i276.photobucket.com/albums/kk15/jackdim/zxr400_l1/motor004.jpg
https://i276.photobucket.com/albums/kk15/jackdim/zxr400_l1/motor007.jpg
____________________
R.I.P. Tareree Shiimi, 1985-2008

Paulington · World Chat Champion Joined: 11 Mar 2009 Karma :

No pictures but kart engines tend to fail spectacularly well!

Friend's engine the conrod sheared, went straight through the cylinder wall, bent the crank, smashed all the gears and shattered the centrifugal clutch.

Expensive yet funny. Epic failure.
____________________
"Four wheels move the body, two wheels move the soul."
Current Vehicles: '89 Kawasaki KDX200, '99 Yamaha XV535, '00 Honda ST1100 Pan-European, '08 Suzuki GSX-R1000, '08 Mitsubishi Lancer GS4 2.0 TDCi, '15 BMW 1 Series 116d Sport Turbo.
CBT: 27/08/08. Theory: 04/09/09. Module 1: 16/09/09. Module 2: 01/10/09.

D O G · World Chat Champion Joined: 18 Dec 2006 Karma :

There was a thread like this in the workshop not so long ago.

This one.

twotakt · World Chat Champion Joined: 25 Oct 2007 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

What's left of the piston and big end from engine #1
https://i48.photobucket.com/albums/f216/stinkwheel/305/Image022.jpg
Valves from same next to two straight ones:
https://i48.photobucket.com/albums/f216/stinkwheel/305/Image033.jpg

Got a spare engine, was apparently running but badly when put away. They guy had no need to lie to me, it was free to uplift.
https://i48.photobucket.com/albums/f216/stinkwheel/305/Image031.jpg

Piston from engine #2 after being thrashed on the redline downhill with a full load of luggage for a considerable distance (not riding along at a steady 70mph as she first claimed)
Piston:
https://i48.photobucket.com/albums/f216/stinkwheel/305/Image075.jpg
The rest of the piston:
https://i48.photobucket.com/albums/f216/stinkwheel/305/Image076.jpg
Conrod:
https://i48.photobucket.com/albums/f216/stinkwheel/305/Image077.jpg
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

ms51ves3 · Super Spammer Joined: 07 Jun 2007 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

twotakt · World Chat Champion Joined: 25 Oct 2007 Karma :

Brilliant work there Stinkwheel, not going 1/2 hearted into the engine destruction lol.

The prior photo's of mine were not my own work (bought them like it) but here is one of mine. My first seizure:

Model: DT125R Diagnosis: Worn rings from constant redlining everywhere

https://i276.photobucket.com/albums/kk15/jackdim/n588262215_606193_1570.jpg
____________________
R.I.P. Tareree Shiimi, 1985-2008

the grim reaper · World Chat Champion Joined: 29 Jun 2005 Karma :

A mate of mine once bought a bike, very cheaply, that was 'running on 3, probably a minor problem'. Taking the engine apart, there was a tennis ball attached to the conrod to stop it rattling in the bore and no piston present at all. How we laughed!

Cheers

Grim
____________________
Adverts don't always work: Remember that advert, where the army are running across the desert and they have a wounded man on a stretcher. They get to a ravine, the bridge is down and a caption pops up that says, 'What are you thinking?'. I don't know about you but I was thinking, 'Christ, I'm glad I'm not in the f***ing army'.

map · Mr Calendar Joined: 14 Jun 2004 Karma :

Piston holed.
Blamed on a lean mixture...

https://www.bikechatforums.com/files/piston_320x240_01.jpg

https://www.bikechatforums.com/files/piston_320x240_02.jpg

Thumbs Up

____________________
...and the whirlwind is in the thorn trees, it's hard for thee to kick against the pricks...
Gibbs, what did Duckie look like when he was younger? Very Happy

doggone · World Chat Champion Joined: 20 May 2004 Karma :

Here's real epic engine failure, not bike though Laughing

https://www.youtube.com/watch?v=dW99OTQOhCg
or
https://www.youtube.com/watch?v=p_Y0B-kQUN8

twotakt · World Chat Champion Joined: 25 Oct 2007 Karma :

Love the tractor vids, fucking mad that.
____________________
R.I.P. Tareree Shiimi, 1985-2008

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Charlottes CB125T piston from many years ago.

https://www.alfa-pages.co.uk/TempPicture/piston.jpg

This blown up Bandit (not mine!) was pretty impressive:-

https://www.alfa-pages.co.uk/TempPicture/BlownUpBandit/

Rod let and punched through most of the crankcases, including smashing the starter motor off the back of the engine.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing