 1Likes
-
1
Post By lizrdbrth
 |
4 Nov 2013
|
|
Registered Users
HUBB regular
|
|
Join Date: Oct 2013
Location: Western Australia
Posts: 62
|
|
|
Rubber intake manifold position?
Hi, can someone confirm to me how to position the intake manifold as depending on how you install them the boot will angle either up or down and in or out.
Is it as shown in the attached photo with the thing on the left boot pointing up and the right side mirroring that? Also, what is that thing on the left boot?
Thanks 
|
4 Nov 2013
|
|
Registered Users
Veteran HUBBer
|
|
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
|
|
|
You have the left one right , that little nozzle goes up. The right then goes on so it lines up with the left. That nozzle is for vacuum lines getting run to parts on other models, just not used on the XT's.
|
4 Nov 2013
|
|
Registered Users
HUBB regular
|
|
Join Date: Aug 2012
Location: Desert, SoCal, U.S.A
Posts: 35
|
|
|
That "thing" is an intake silencer fitting.
In some markets and on most later bikes here in the U.S. it is connected to a simple, long piece of tubing which is simply capped off and terminates up under the fuel tank.
The tube serves another purpose in that it acts as a vacuum storage "tank", storing a miniscule amount of vacuum between intake cycles. It's generally used with CV-type carbs and assists in minimizing "CV lag" relative to good ol' slide carbs.
Probably more than you wanted to know but I suspect all future replacement boots will be made with the option.
Last edited by lizrdbrth; 4 Nov 2013 at 17:04.
|
4 Nov 2013
|
|
Registered Users
HUBB regular
|
|
Join Date: Oct 2013
Location: Western Australia
Posts: 62
|
|
|
Thanks, i thought that was the correct way alright but wasn't 100% on it. Had always wondered what that nozzle was for too!
|
4 Nov 2013
|
|
Registered Users
HUBB regular
|
|
Join Date: Aug 2012
Location: Desert, SoCal, U.S.A
Posts: 35
|
|
|
To harp on the subject a bit further I see a lot of them capped off in the misguided belief that they serve no purpose.
If you have a CV carb consider re-installing the tube, or even retrofitting one to bike not so equipped. The fitting presents the same potential for vacuum leaks whether capped off or with the silencer tube installed. At least the tube does something positive for ya.
It also offers up to a foot and a half of fairly pristine stored tubing which could be utilized for a future bodge elsewhere on the bike, if needed. That little vacuum cap will fail from the heat long before a section of capped reinforced fuel line will.
|
4 Nov 2013
|
|
Registered Users
Veteran HUBBer
|
|
Join Date: May 2012
Location: Lithuania
Posts: 204
|
|
|
I got a set of new intake rubbers a year ago.
Now a few months back I was installing a Raptor 660 carb to my XT, and I noticed that this little tube had a tiny hole in the rubber surrounding it. After a closer inspection I found out that the alloy (in which the bronze tube is fitted) has a little crack and is sucking air.
I ended up cutting off the bronze pipe, drilling a 5mm hole (removing the bronze tube completely) and threading it for a 6mm screw. To seal the crack I applied quite a bit of Loctite to the screw's threads and also some heat resistant silicone to the top of the screw (covered the screw head completely), to make sure it doesn't suck air once cured.
So... Should I throw away my 1-year old rubbers with a makeshift sealed crack, and get a set of new ones? :confused1: this vacuum storage sounds weird... It stores the vacuum, but it also will lag to make vacuum for the carb when you quickly twist the throttle: it will have to "increase" the vacuum in the tube before "increasing" it in the carb, thus delaying the lift of the vacuum slide.
Also, in my Raptor 660 carb there is a vacuum slide in the left carb, but there's no vacuum slide on the original YDIS carb.
|
4 Nov 2013
|
|
Registered Users
HUBB regular
|
|
Join Date: Aug 2012
Location: Desert, SoCal, U.S.A
Posts: 35
|
|
We're going pretty far afield from the OP's question, but I'll play.
Naturally you can do whatever you'd like. We can argue theory all day and we're still stuck with replacement boots with a fitting which must be capped in some manner. Vacuum caps have don't have ego issues. They don't care if they're an inch long, or 20  .
Since this is a forum for TRAVELLERS I'm suggesting a way to make lemonade of the fitting. With a CV carb the tube has a known benefit. With a slide carb it is almost no value, but in either case it does no harm. Replace it with a length of fuel line and it can serve double duty as a source of spare tubing. That will be more useful and durable down the road than a standard vacuum cap.
Last edited by lizrdbrth; 4 Nov 2013 at 19:10.
|
4 Nov 2013
|
|
Registered Users
Veteran HUBBer
|
|
Join Date: Apr 2011
Location: Southampton, England
Posts: 110
|
|
|
BTT.
They both angle out (as viewed from the head).
Do not neglect to cap the vacuum tube in the left one somehow. The pair I bought didn't have a cap supplied and the cap on the old one was so perished it fell apart when I took it off.
I found some hose the right size, folded it back on itself and cable tied it up tight. It's a bodge, but it works.
|
4 Nov 2013
|
|
Registered Users
HUBB regular
|
|
Join Date: Aug 2012
Location: Desert, SoCal, U.S.A
Posts: 35
|
|
Quote:
Originally Posted by Bandit127
BTT.
They both angle out (as viewed from the head).
Do not neglect to cap the vacuum tube in the left one somehow. The pair I bought didn't have a cap supplied and the cap on the old one was so perished it fell apart when I took it off.
I found some hose the right size, folded it back on itself and cable tied it up tight. It's a bodge, but it works.
|
Thread a bolt into the open end, then zip it. No leaks.
You'll have a spare bolt, PLUS spare tubing.
Can you tell that the weather's gone crappy here today?  
Last edited by lizrdbrth; 4 Nov 2013 at 20:03.
|
4 Nov 2013
|
 |
Registered Users
Veteran HUBBer
|
|
Join Date: May 2013
Location: Norway
Posts: 1,364
|
|
Quote:
Originally Posted by Zergman
I got a set of new intake rubbers a year ago.
Now a few months back I was installing a Raptor 660 carb to my XT, and I noticed that this little tube had a tiny hole in the rubber surrounding it. After a closer inspection I found out that the alloy (in which the bronze tube is fitted) has a little crack and is sucking air.
I ended up cutting off the bronze pipe, drilling a 5mm hole (removing the bronze tube completely) and threading it for a 6mm screw. To seal the crack I applied quite a bit of Loctite to the screw's threads and also some heat resistant silicone to the top of the screw (covered the screw head completely), to make sure it doesn't suck air once cured.
So... Should I throw away my 1-year old rubbers with a makeshift sealed crack, and get a set of new ones? :confused1: this vacuum storage sounds weird... It stores the vacuum, but it also will lag to make vacuum for the carb when you quickly twist the throttle: it will have to "increase" the vacuum in the tube before "increasing" it in the carb, thus delaying the lift of the vacuum slide.
Also, in my Raptor 660 carb there is a vacuum slide in the left carb, but there's no vacuum slide on the original YDIS carb.
|
No you dont have to throw them, you wont feel the difference with or witout this..
|
4 Nov 2013
|
|
Registered Users
HUBB regular
|
|
Join Date: Aug 2012
Location: Desert, SoCal, U.S.A
Posts: 35
|
|
Quote:
Originally Posted by Mezo
The 'thing' on the left intake boot is a vacuum pick up point used on XT`s that are fitted with fuel pumps, they need a vacuum to operate.
Mezo.
|
It's used for many different things, worldwide. Here in the U.S. it's more often used by Yamaha to plumb intake silencers/vaccum storage tubes. Over here the signal for vacuum fuel shutoffs and the like more often comes from an additional fitting on the side of our carbs.
Here's a parts fiche showing the fitting used for a silencer/vacuum storage (Item 22). In this case a U.S. market TW200. This is what I'm suggesting be done if you want to make lemonade. Nothing more than a couple of feet of tubing with a plug in the end:
Yamaha Motorcycle Parts 2011 TW200 - TW200A1 INTAKE Diagram
At any rate the days of straight, fitting-less replacements are over and that's how I've been using the ports to at least serve some useful function aside from being an obvious failure point. We have to buy the identical items to yours and this keeps a couple of feet of clean, uncontaminated spare fuel/vacuum/vent line out of my luggage and attached to the bike at all times. Saw off as much as you need, then re-install the plug.
But then again I sometimes strap a pair of roller skates to my handlebars as added insurance. Walking is for commoners.
Last edited by lizrdbrth; 4 Nov 2013 at 23:06.
|
30 Apr 2014
|
|
Registered Users
New on the HUBB
|
|
Join Date: Apr 2014
Posts: 2
|
|
Quote:
Originally Posted by Zergman
I got a set of new intake rubbers a year ago.
Now a few months back I was installing a Raptor 660 carb to my XT, and I noticed that this little tube had a tiny hole in the rubber surrounding it. After a closer inspection I found out that the alloy (in which the bronze tube is fitted) has a little crack and is sucking air.
I ended up cutting off the bronze pipe, drilling a 5mm hole (removing the bronze tube completely) and threading it for a 6mm screw. To seal the crack I applied quite a bit of Loctite to the screw's threads and also some heat resistant silicone to the top of the screw (covered the screw head completely), to make sure it doesn't suck air once cured.
So... Should I throw away my 1-year old rubbers with a makeshift sealed crack, and get a set of new ones? :confused1: this vacuum storage sounds weird... It stores the vacuum, but it also will lag to make vacuum for the carb when you quickly twist the throttle: it will have to "increase" the vacuum in the tube before "increasing" it in the carb, thus delaying the lift of the vacuum slide.
Also, in my Raptor 660 carb there is a vacuum slide in the left carb, but there's no vacuum slide on the original YDIS carb.
|
I installed an '01 Raptor 660 carb on my 86 600 XT as well. Have you had any issues with intake boots cracking? My first set only lasted a year due to having to 'stretch' them to fit the larger distance between intakes on the raptor carb. Very difficult for me to get the carb intalled w/ out a leak. I was going to machine an adaptor plate but was curious if I am over looking something. I would have PM'ed but this is my first post
Thanks!
|
3 May 2014
|
|
Registered Users
Veteran HUBBer
|
|
Join Date: May 2013
Location: Wisconsin, USA
Posts: 827
|
|
|
You notice the Raptor carb bells are bigger diameter than the originals? Turn the od's down a bit but offset closer together. Then they get closer plus the boots don't have to stretch as big to fit over them. It isn't much but helps.
|
4 May 2014
|
|
Registered Users
Veteran HUBBer
|
|
Join Date: May 2012
Location: Lithuania
Posts: 204
|
|
|
Hey arek600xt,
no, I don't have any cracking issues whatsoever. The carb bells fit there perfectly well, I just trimmed the intake rubber boots in some places to accommodate carb's shape (some places touch the boot and you can't get it any further in the boot, I hope I'm explaining it clearly enough).
Cheers,
Tadas.
|
6 May 2014
|
|
Registered Users
New on the HUBB
|
|
Join Date: Apr 2014
Posts: 2
|
|
I appreciate the replies. I'm having an older set of intake manifold bolts modified and am just going to run 'hose' between intake flange and carb bells. You all are lucky....my raptor carb does not want to play nice w/ OE intake manifold boots. I'll snap some pics once I get this all sorted out 
|
|
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
HTML code is Off
|
|
|
|
Next HU Events
ALL Dates subject to change.
2025 Confirmed Events:
- Virginia: April 24-27 2025
- Queensland is back! May 2-4 2025
- Germany Summer: May 29-June 1 2025
- CanWest: July 10-13 2025
- Switzerland: Date TBC
- Ecuador: Date TBC
- Romania: Date TBC
- Austria: Sept. 11-15
- California: September 18-21
- France: September 19-21 2025
- Germany Autumn: Oct 30-Nov 2 2025
Add yourself to the Updates List for each event!
Questions about an event? Ask here
See all event details
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.
"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™ 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!
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!
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.
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.
|
|
|
helps answer the question - Why Go? Inspirational stories by veteran travellers Greg Frazier (5 times RTW), Peter and Kay Forwood (193 countries), Tiffany Coates (Mongolia Mayhem) and Rene Cormier (University of Gravel Roads).
Get Ready! covers planning, paperwork, medical and many other topics! "Inspirational and Awesome!" See the trailer here!
What stuff do I need - riding gear, clothing, camping gear, first aid kit, tires, maps and GPS? What don't I need? How do I pack it all in? Lots of opinions from over 150 travellers!
break down language barriers, overcome culture shock, ship the bike and deal with breakdowns and emergencies."Just makes me want to pack up and go!" See the trailer here!
Grant demystifies the black art of Tire Changing and Repair to help you STAY on the road! "Very informative and practical." See the trailer here!
Ladies on the Loose! For the first time ever, a motorcycle travel DVD made for women, by women! These intrepid women share their tips to help you plan your own motorcycle adventure. They also answer the women-only questions, and entertain you with amazing tales from the road! Presented by Lois Pryce, veteran solo traveller through South America and Africa and author of 'Lois on the Loose', and 'Red Tape and White Knuckles.'
Cotton or synth sweat-wicking t-shirts with the cool Horizons Unlimited graphic on the front and a snappy slogan (changing every year) on the back.
Show your route on your panniers. Great conversation starter when you meet people on the road!
Motorcycle and travel books to inspire and inform you!
The definitive guide to planning your motorcycle adventure! This insanely ambitious 2-year project has produced an informative and entertaining 5-part, 18 hour video series. "The ultimate round the world rider's how-to!" MCN UK.
Linear Mode
