Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech
tt600r down on power and running very lean tt600r down on power and running very lean
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
 
LinkBack Thread Tools Display Modes
  #1  
Old 20 May 2005
wonky's Avatar
Gold Member
Veteran HUBBer
  
Join Date: Mar 2005
Location: Leeds, West Yorkshire, England
Posts: 100
tt600r down on power and running very lean
I had my bike checked on a dyno the other day. Ive had it a couple of months and done about 3000km on it.
It feels a bit lumpy and the fuelling not that smooth(hence the dyno check), but since ive never ridden another one i didn't know the difference.
The dyno showed it was only making 27.5bhp whereas standard tt600r's normally make about 37.5 on the same dyno.
Only mods that i know of are an arrow can i fitted.
The operator thinks the valve timing might be out by one tooth on the cam chain.
Any ideas before i delve into the engine?
Reply With Quote
  #2  
Old 20 May 2005
wonky's Avatar
Gold Member
Veteran HUBBer
  
Join Date: Mar 2005
Location: Leeds, West Yorkshire, England
Posts: 100
Extra Info: Its a 99' TT600R Belgarda with 13000km on the clock.
Reply With Quote
  #3  
Old 20 May 2005
Registered Users
Veteran HUBBer
  
Join Date: Sep 2004
Location: Salisbury UK
Posts: 155
A leaky float in the carb resovior could be making it f=run lean. Or the can is far more free flowing than the previous one. Previous owner may have put in different jets. Try the float.

Charlie
Reply With Quote
  #4  
Old 23 May 2005
Contributing Member
Veteran HUBBer
  
Join Date: Mar 2003
Location: London,England
Posts: 358
Hi
I had my TTR 600 dynoed last week after it was running badley kept cutting out at low revs and also missfiring.
I got it to run better for a while by turning piolt air screw inn makes it leaner,but then the problem returned.
After being on the dyno the mechanic said it was very lean but could not get it to run any better by adjusting piolt screw so stripped and cleaned carbs.The bike is running better now. It was making 36 BHP which I thought was not very much but the shop also have an XT 600E which makes 33BHP on the same dyno.I have a CRD pipe and different cam so expected a bit more then 36 BHP.
As for your bike check that the engine breather which plugs into airbox is ok as if this comes off or splits you will be drawing more air through carbs making it run lean.
Reply With Quote
  #5  
Old 23 May 2005
wonky's Avatar
Gold Member
Veteran HUBBer
  
Join Date: Mar 2005
Location: Leeds, West Yorkshire, England
Posts: 100
cheers guys,
ive had someone ride the bike who knows their stuff about singles and he reckons its running good(although we had a problem with it cutting out at low revs as well, fuel tank breather may have been blocked). I'm going to check the airbox breather and get a run on a different dyno.
On the same ride i snapped the kick starter boss half way up a welsh mountain! My extremely able guide managed to bump start it at about 30mph on a steep welsh trail! He jumped about 4 feet off the seat and hit it in third! Funniest thing i've seen for years, incredible..
Cheers for the advice
wonky
Reply With Quote
  #6  
Old 24 May 2005
Registered Users
Veteran HUBBer
  
Join Date: Aug 2002
Location: Hendrik Ido Ambacht, Holland
Posts: 360
This seems to be normal with TT-R's. Always have a spare kickstarter mechanism in you pocket!

------------------
Fred, XTZ660, Holland.
__________________
Fred, XTZ660, Holland.
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

 
 

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 01:29.

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