Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
Headcover fit from new models? Headcover fit from new models?
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 George Guille, It's going to be a long 300km... Bolivian Amazon

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


Photo by George Guille
It's going to be a long 300km...
Bolivian Amazon



Reply
Page 1 of 4 1 234
 
LinkBack Thread Tools Display Modes
  #1  
Old 3 Jul 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,325
Headcover fit from new models? Update!
Do the headcover from 1998mod fit my 93mod, what changes was made on the next engine? Is it any point changing only headcover or is it best changing cylinder/headcover in one unit for best fit?
Last edited by xtrock; 5 Jul 2014 at 20:44.
Reply With Quote
  #2  
Old 3 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: Sep 2012
Location: Middle USA
Posts: 349
The Rocker box and head should be replaced as a matched pair. I know some on eBay sell them separate, but this is not good. The cam bearing function is the combination of the two and should be matching to assure a proper clearance. You "MIGHT" be able to get by, but do you want to take a chance?

My opinion, I am sure others will jump in...

I do not know if the 89 head will fit the later model.
__________________
'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.
Reply With Quote
  #3  
Old 4 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
Yep what Steve said , the head and cover go together unless you remachine the bores together like I had to on one of mine. I'm sure quite a few can be swapped around, depending on how Yamaha original located the parts when machining them, but it would be a crap shoot.

Still have the oil leak huh? Maybe it's the head itself that has a flaw.
Reply With Quote
  #4  
Old 4 Jul 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,325
Ok i understand, yep leaking never stop. The strange thing is that i have located it to be beetween front and rear screw left side at the plug cap. I really dont see how only this small area can be uneven, stupid me came just now came up with the idea of measure if there is a gap when cover is on without sealent. How much can the sealent fill up?
Reply With Quote
  #5  
Old 5 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: Sep 2012
Location: Middle USA
Posts: 349
I don't have a solution short of replacing the head and rockerbox as a pair but I had a similar problem with an 82 HONDA XL500. I understand this is quite common with that model as they do not have enough bolts to evenly hold the rocker box in place. I tried several times using different sealer, letting it sit for days to dry and NOTHING solved it. I later sold it on and next owner replaced the head and rocker box to solve it....

Steve
__________________
'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.
Reply With Quote
  #6  
Old 5 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: Dec 2010
Posts: 114
Sort of sounding like maybe the faces are not flat or at some point in past its had something jammed in to lever it off maybe?
If you can find someone clever they maybe able to machine the mating faces of the head and camhousing flat then take the bore then bolt both together and remachine the hole the camshaft runs in to the correct size..
Alternatively the machinist may say 'what are you sodding around with bloody old rubbish for?'....trouble is some of this bloody old rubbish tends to keep working long after some newer stuff has deceased..
I'd say your options are machining or another head and cam housing..
Reply With Quote
  #7  
Old 5 Jul 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,325
Never have been any problem with leak before, bike has 35000km and the only reason i did the seal because of the O ring leaked on the side of cover. I had an idea, what if i just put minimum of sealent around the cover and add some more where the leak problem is? Just thinking adding even around gives no help in a problem area, does it sound way out? Or maybe iam wrong and there problem is a high spot that makes the seal go away in that area, next time i will put the cover back and try to get feeler gauge in there and check clearance.
Last edited by xtrock; 5 Jul 2014 at 14:24.
Reply With Quote
  #8  
Old 5 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
A feeler gauge should let you know what your dealing with. It's just weird that one of the sealants didn't fix it, the oil isn't pressurized up there so it is just flung or running past that area. Nothing should be forcing it out.:confused1:
Reply With Quote
  #9  
Old 5 Jul 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,325
Ok, have been out for hours and testing, checking every 15min around the engine with paper all around. And i think i have found the reason, the oil never came out on idle, i think i found a crack. Its strange that oil can come out in the top like that, but i guess in high speed it get sucked out. Oil was coming down to the sealent at the same spot every time when riding down hill, so i have fooled myself thinking its the sealent..

My big question now is, can i clean up this and use dremel to grind a little. Then use the alu stick over the area? please dont tell me i have to take cover off for welding? Iam just happy now for finding the leak


foto upload


kostenlose bilder
Reply With Quote
  #10  
Old 5 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
Take the mount plate off to gain good access to the area and grind a "V" groove the length of the crack on fill it all with JB Weld.

A true TIG aluminum welded fix would be best(take the cover off), but the JB may just work.

I would have thought a leak from that area would show up in the back side of the cap not up by the front, sure there isn't more of a crack on the other side of that area?
Reply With Quote
  #11  
Old 5 Jul 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,325
Quote:
Originally Posted by jjrider View Post
Take the mount plate off to gain good access to the area and grind a "V" groove the length of the crack on fill it all with JB Weld.

A true TIG aluminum welded fix would be best(take the cover off), but the alu stick just work.
Yeah the TIG was my fear hehe. I have the alustick so i think i give it a try, i have grinded i little as you see in pict just to check if its deeper. First it looked like just crack in top surface, isnt it strange that so mch oil can come out in the top of the cover after 2hours riding?

Is this possible to do on the cover?
https://www.youtube.com/watch?v=hHvrE1Cd5Eg
Last edited by xtrock; 5 Jul 2014 at 21:47.
Reply With Quote
  #12  
Old 5 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: Sep 2012
Location: Middle USA
Posts: 349
That is a stress point, the engine mount is flexing the crack, more so at speed. This means that you will have to have it professionally welded, hopefully it will not warp. If this were not a stressed area, you could seal it with JB weld. Expect the worst. Hope for the best. I expect a good heli arc welder can "fix" it. He may grind out a "V" as well, It would be best if you can soak the cover in solvent to get as much oil out as you can. If not, oil will try and seep out of the crack during welding, not good.

Steve
__________________
'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.
Reply With Quote
  #13  
Old 5 Jul 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,325
So you dont think that the alu stick can fix this? When we talk about heat, what is best for this, heat up to 350degrees for alustick or do TIG? Dont want anything else to get damaged, iam thinking its best doing this job with cover on engine so it wont bend heating.

This is the Alustick

http://www.ebay.com/sch/i.html?_sop=...ardweld&_frs=1

And how thick is alu at the point i want to fix? Seems strange if its only my engine that its happend to, hope someone else have done the repair.
Last edited by xtrock; 6 Jul 2014 at 01:28.
Reply With Quote
  #14  
Old 6 Jul 2014
Registered Users
Veteran HUBBer
  
Join Date: Sep 2012
Location: Middle USA
Posts: 349
Since this is a stress point, NOTHING short of a full aluminum weld will be strong enough. Engine torque will keep breaking the glue or weak weld. I don't think you can weld it on the engine due to the heat involved and the oil. You will most likely have to completely dismantle the rocker box, remove all the parts and seals as it will get very hot from the welding. Hopefully if the welder is good, he will preheat the whole piece then weld it and let it cool naturally, hopefully it will not warp.
__________________
'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.
Reply With Quote
  #15  
Old 6 Jul 2014
xtrock's Avatar
Registered Users
Veteran HUBBer
  
Join Date: May 2013
Location: Norway
Posts: 1,325
Ok i understand, but what you mean by stresspoint? I think i will try with the wizard weld, this i can do with nothing removed. The temp on a TIG weld is extreme and iam more scared to damage the cover than not getting sealed. This engine monting is only for stability, its not like the engine is hanging after this monting. I was out riding now and had one hand on the engine on different rpm, cant even feel vibration.
Reply With Quote
Reply
Page 1 of 4 1 234

« 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
rear brake pads cant fit bergspre Yamaha Tech 74 19 Jun 2018 15:22
useful links regarding vaccinations / health on the road BigPete33 Staying Healthy on the Road 0 25 Mar 2014 11:09
Urgent: Crate needed to fit Yamaha Tenere 660 in Sydney paulhamblett Trip Transport 3 20 Mar 2014 01:49
What handguards fit the KLE 500? Throttled Kawasaki Tech 7 24 Jul 2012 12:27

 
 

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

HU Event and other updates on the HUBB Forum "Traveller's Advisories" thread.
ALL Dates subject to change.

2024:

Add yourself to the Updates List for each event!

Questions about an event? Ask here

HUBBUK: info

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...

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 15:26.

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