Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
XT600 engine rattle XT600 engine rattle
Register FAQ Calendar Today's Posts
Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by Hendi Kaf, in Cambodia

I haven't been everywhere...
but it's on my list!


Photo by Hendi Kaf,
in Cambodia



Reply
Page 2 of 2 1 2
 
LinkBack Thread Tools Display Modes
  #16  
Old 21 Sep 2014
Registered Users
New on the HUBB
  
Join Date: Sep 2014
Posts: 9
Another update...decided to take cylinder off also....
It was over 8 months in workshop and this is what I get...

pretty.....

I checked the old head and new one and both pistons... Valves and piston seem ok, no hit marks and at old head they were restored when I got engine back from repairs.
Reply With Quote
  #17  
Old 21 Sep 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,371
Wow thats really sad, end of story for that engine with parts of the piston all over...
Reply With Quote
  #18  
Old 21 Sep 2014
Registered Users
Veteran HUBBer
  
Join Date: Dec 2008
Location: Denmark
Posts: 1,417
Its just plane sad what a lousy mechanic can do to an otherwise good engine.
Reply With Quote
  #19  
Old 22 Sep 2014
Registered Users
HUBB regular
  
Join Date: Apr 2014
Location: Hawkes Bay New Zealand
Posts: 28
thats got to hurt !
Good luck .
Its looking like versions No 2. Too much oil may have hydraulic-ed the piston. As piston went to bottom of stroke it may have hit the overfull oil level and cracked ?
Reply With Quote
  #20  
Old 22 Sep 2014
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
Quote:
Originally Posted by beagle scott View Post
thats got to hurt !
Good luck .
Its looking like versions No 2. Too much oil may have hydraulic-ed the piston. As piston went to bottom of stroke it may have hit the overfull oil level and cracked ?

It's because the cylinder is bored oversize and a standard piston was used. Each firing slaps the piston as in his video(it was worse there because the skirt was already gone).Piston had .01" clearance which will always end the same way. Notice which side skirt is broken ,the side that would hit on combustion.

Hydrolocking would most likely cause the piston to break around the wrist pin (or blow the top off it)and bend/break the rod, maybe crack the cases around the crank bearings. By looking at an XT motor it would take probably close to 4 quarts to stop the piston.

I see that the picture that shows the .25 on the top of original piston wasn't posted here, but on ADV, so Beagle is probably not seeing what some of us others have. It's where I got into the too small piston problem. https://dl.dropboxusercontent.com/u/...tud/piston.jpg
Reply With Quote
  #21  
Old 23 Sep 2014
Registered Users
HUBB regular
  
Join Date: Apr 2014
Location: Hawkes Bay New Zealand
Posts: 28
Angry
!! Yes that is it alright to sloppy from day one ! I haven't been on the other sight. he should stand by his mistake but as already said I wouldn't trust him much at all ! Good luck
Reply With Quote
  #22  
Old 6 Oct 2014
Registered Users
New on the HUBB
  
Join Date: Sep 2014
Posts: 9
Little update.

Got the cylinder checked out and those are minor scratches, no need to rebore. Piston should be 95,25 like it was before the repairs and finally got in touch with the mechanic and when he saw that broken piston, he told that he is going to get new piston kit. Everything went smooth.
I don't know if it is true, but he told that cylinder size was checked out by local motoclub....although I think you can see that piston is too small when you put it into cylinder...

Most people told me, that there's no point to split the cases. I kind of think the same. Going to fill it with diesel and get metal dust and all the pieces out(already found most in the clutch area).

Also found this thing in other topic about KTM:
Quote:
On a Japanese bike? Flush it out and put another 50,000 miles on it.
That bike? Tear it apart.
The metal dust should not be the problem, cause oil filter is going to catch most of it and even when you brake in new engine, you get metal dust anyway.

In 100-200km oil change, then at 1000km. But all of this will be in about 2015 march/april cause of winter is coming and can't ride with icy roads+snow.
Under oil pump gear, theres a hole with some skirt pieces. You can see 1 piece there if you look closely.
Reply With Quote
  #23  
Old 6 Oct 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,371
What size is the piston that cracked? if you dont need rebore you need to do some hone of the cylinder, good luck.
Reply With Quote
  #24  
Old 6 Oct 2014
Registered Users
New on the HUBB
  
Join Date: Sep 2014
Posts: 9
Quote:
Originally Posted by xtrock View Post
What size is the piston that cracked? if you dont need rebore you need to do some hone of the cylinder, good luck.
95.00 size, should had been 95.25. Yeah, will hone it.
Reply With Quote
Reply
Page 2 of 2 1 2

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 

Posting Rules
You may not post new threads
You may not 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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
XT600 Engine Rebuild Phoenix6 Yamaha Tech 15 2 Feb 2015 23:02
1984 XT600 Engine Disassembly HALTED John1189 Yamaha Tech 4 23 Sep 2014 16:26
TT600RE the same engine as XT600? geordie_e Yamaha Tech 4 7 Jan 2012 20:54
XT600E 2002 Engine Oil Trichelia Yamaha Tech 17 17 Nov 2011 15:25

 
 

Announcements

Thinking about traveling? Not sure about the whole thing? Watch the HU Achievable Dream Video Trailers and then get ALL the information you need to get inspired and learn how to travel anywhere in the world!

Have YOU ever wondered who has ridden around the world? We did too - and now here's the list of Circumnavigators!
Check it out now, and add your information if we didn't find you.

Next HU Eventscalendar

25 years of HU Events
Be sure to join us for this huge milestone!

ALL Dates subject to change.

2025 Confirmed Events:

Virginia: April 24-27
Queensland is back! May 2-5
Ecuador June 13-15
Germany Summer: May 29-June 1
CanWest: July 10-13
Switzerland: Date TBC
Ecuador: Date TBC
Romania: Date TBC
Austria: Sept. 11-14
California: September 18-21
France: September 19-21
Germany Autumn: Oct 30-Nov 2

Add yourself to the Updates List for each event!

Questions about an event? Ask here

See all event details

 
World's most listened to Adventure Motorbike Show!
Check the RAW segments; Grant, your HU host is on every month!
Episodes below to listen to while you, err, pretend to do something or other...

Adventurous Bikers – We've got all your Hygiene & Protection needs SORTED! Powdered Hair & Body Wash, Moisturising Cream Insect Repellent, and Moisturising Cream Sunscreen SPF50. ESSENTIAL | CONVENIENT | FUNCTIONAL.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

"Ultimate global guide for red-blooded bikers planning overseas exploration. Covers choice & preparation of best bike, shipping overseas, baggage design, riding techniques, travel health, visas, documentation, safety and useful addresses." Recommended. (Grant)



Ripcord Rescue Travel Insurance.

Ripcord Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers.

Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more.

Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes!


 

What others say about HU...

"This site is the BIBLE for international bike travelers." Greg, Australia

"Thank you! The web site, The travels, The insight, The inspiration, Everything, just thanks." Colin, UK

"My friend and I are planning a trip from Singapore to England... We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) on what we have learned from this site." Phil, Australia

"I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Brent, USA

"Your website is a mecca of valuable information and the (video) series is informative, entertaining, and inspiring!" Jennifer, Canada

"Your worldwide organisation and events are the Go To places to for all serious touring and aspiring touring bikers." Trevor, South Africa

"This is the answer to all my questions." Haydn, Australia

"Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Thomas, Germany

Lots more comments here!



Five books by Graham Field!

Diaries of a compulsive traveller
by Graham Field
Book, eBook, Audiobook

"A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk.



Back Road Map Books and Backroad GPS Maps for all of Canada - a must have!

Your ad could be here, on EVERY page of the HUBB, or the whole website, or as many as you like!

New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80G/S.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events all over the world with the help of volunteers; we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.



All times are GMT +1. The time now is 02:21.

Contact Us - Horizons Unlimited Motorcycle Travellers Website - Archive - Privacy Statement - Top