Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
Threaded inserts for cylinder head bolts? Threaded inserts for cylinder head bolts?
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 Marc Gibaud, Clouds on Tres Cerros and Mount Fitzroy, Argentinian Patagonia

25 years of HU Events


Destination ANYWHERE...
Adventure EVERYWHERE!




Photo by Marc Gibaud,
Clouds on Tres Cerros and
Mount Fitzroy, Argentinian Patagonia



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 22 Jul 2009
*Touring Ted*'s Avatar
Contributing Member
Veteran HUBBer
  
Join Date: Jul 2005
Location: Wirral, England.
Posts: 5,680
I take it you have stripped the thread in the barrel....

Your only solution is to remove the barrel from the bike... and unless you are a decent mechanic/engineer yourself, take it down to an engineers workshop or engine specialist and have them drill out and insert a "TIMESERT" into the barrel.

Helicoils work but they are not 100% reliable on something as important as those big M8's holding your topend together.

Don't stress though, it shouldnt cost too much.. Maybe £20-£30

If there is not enough metal in the barrel then you will need to replace it... simples !
__________________
Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.
Reply With Quote
  #2  
Old 27 Jul 2009
Registered Users
Veteran HUBBer
  
Join Date: Oct 2007
Location: London
Posts: 301
I can do that!
Easy!

YouTube - Time-Sert thread repair
__________________

Some great quote about hard core travel that nobody has said yet.[/URL]
Reply With Quote
  #3  
Old 27 Jul 2009
Registered Users
Veteran HUBBer
  
Join Date: Jul 2001
Location: Bmth, UK
Posts: 148
XT Girls on YouTube
Quote:
Originally Posted by XT GIRL View Post
Easy!
are you sure?..... I've seen your mechanical exploits on You Tube.......
Reply With Quote
  #4  
Old 28 Jul 2009
Contributing Member
Veteran HUBBer
  
Join Date: Sep 2004
Location: Vancouver BC Canada
Posts: 118
There is nothing wrong in using Helicoil for this type of application. Just use long ones preferably two in each stud hole.

Pawlie
Reply With Quote
  #5  
Old 28 Jul 2009
Registered Users
HUBB regular
  
Join Date: Nov 2002
Location: Hofstade Belgium
Posts: 28
Thanks for the rplies and advice.

On the German XT 600 forum several people have put messages that helicoils are not a good solution for this application. I don't know if this is from experience or engineering judgement. Do some of you have experience using helicoils to repair the treated holes for the cilinder head bolts .

A 12 mm insert would be the strongest solution but I fear there is not enough material around the holes.

Guy
Reply With Quote
  #6  
Old 6 Aug 2009
Registered Users
HUBB regular
  
Join Date: Oct 2008
Location: Otley, UK
Posts: 24
It does work....
I've done a couple of sets of barrels studs for ther 1VJ and a helicoil style insert does work (personally, i use recoils, but they're very similar in principle).

The stud hole needs to ber bored and threaded to full depth - a standard recoil insert gives (from memory) about 8 turns, which isn't nearly enough. I use long inserts, and 2 per hole, so it's threaded all the way down.

I also use some thread lock on the threads, as the german forum is of the opinion that the studs can loosen off if they've been coiled.
__________________
1979 LeMansII
1981 LeMansII
1981 Monza
1987 XT600 1VJ
1997 SZR660
1995 NTV650

"Why do it? Because we can, and we want to." Guiseppe Benelli
Reply With Quote
  #7  
Old 6 Aug 2009
Registered Users
Veteran HUBBer
  
Join Date: Apr 2005
Location: Oxford UK
Posts: 2,120
Quote:
Originally Posted by Guy Scheveneels View Post
Thanks for the rplies and advice.

On the German XT 600 forum several people have put messages that helicoils are not a good solution for this application. I don't know if this is from experience or engineering judgement. Do some of you have experience using helicoils to repair the treated holes for the cilinder head bolts .

A 12 mm insert would be the strongest solution but I fear there is not enough material around the holes.

Guy

I had a similar problem on my XR600 Honda and had the holes helicoiled (by a reputable engineering co in Kegworth). All six of them subsequently stripped again. Eventually I had them redone by another company with custom made inserts similar to Time-Serts and that seems to have worked.
Reply With Quote
  #8  
Old 6 Aug 2009
Registered Users
HUBB regular
  
Join Date: Nov 2002
Location: Hofstade Belgium
Posts: 28
Thanks for all advise.
There seem to be different kind of experiences with a helicoil type repair.
After many measurements I still fear holes for 12 mm inserts would leave too little material.
So I decides to make studs with M10 at one end and M8 at the other. I will have to install them before mounting the cilinder head. This must be a good solution, ... I think.
If anyone discovers I overlooked a possible problem please tell me ASAP.

Guy
Reply With Quote
Reply

« 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
re-torquing head bolts stari vujadin Yamaha Tech 3 11 May 2009 21:48
KLE cylinder head ranfog Kawasaki Tech 3 25 Jan 2009 19:42
XL600LMF cylinder head xr200 Honda Tech 1 17 Jan 2007 16:37
Head bolts skip Yamaha Tech 0 19 Jan 2004 08:28
Dommie cylinder head mikechips Honda Tech 2 13 Oct 2003 14:22

 
 

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
Germany Summer: May 29-June 1
Ecuador June 13-15
Bulgaria Mini: June 27-29
CanWest: July 10-13
Switzerland: Aug 14-17
Romania: Aug 22-24
Austria: Sept. 11-14
California: September 18-21
France: September 19-21
New York: October 9-12 NEW!
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.

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 Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers and travel is covered on motorcycles of all sizes.
(ONLY US RESIDENTS and currently has a limit of 60 days.)

Ripcord Evacuation Insurance is available for ALL nationalities.


 

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!

Every book a diary
Every chapter a day
Every day a journey
Refreshingly honest and compelling tales: the hights and lows of a life on the road. Solo, unsupported, budget journeys of discovery.
Authentic, engaging and evocative travel memoirs, overland, around the world and through life.
All 8 books available from the author or as eBooks and audio books



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 02:40.

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