Convert from single to dual carbs?? - Triumph Forum: Triumph Rat Motorcycle Forums
» Main Menu

Discussion Forums
 » Twins
 » Tiger
 » General
 » RAT

Features
 » Blogs

Motorcycle.com Links

Contribute
 » Photo

Motorcycle Forums
» Insurance
» Sponsors
» Our Partners
»ATV Reviews
»Motorcycle Games

Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

Reply
 
LinkBack Thread Tools Display Modes
Old 09-03-2009, 10:47 PM   #1 (permalink)
Senior Member
Grand Prix 500
Main Motorcycle: pre '68 Bonneville 750cc
 
Join Date: Jul 2008
Location: Someplace in the NW USA
Posts: 125
Other Motorcycle: 86 Yamaha FJ1100
Extra Motorcycle: Custom mini-bike 165cc
Convert from single to dual carbs??

I want to convert my 750 Tiger from a single to a dual carb. Before I rush out a buy anything I need some advice. From what I am told, this 73 TR7 750 Tiger is the same motor as a 73 T140 750 Bonneville. Does this mean the Bonneville intake manifold will bolt right on?? Are 30mm carbs the preferred? I assume I will also need a Bonneville throttle cable for dual carbs??

Thanks in advance
TangoMike
__________________
If it's not leaking oil, there ain't none in it.
tangomike is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 09-03-2009, 10:57 PM   #2 (permalink)
Senior Member
Moto Grand Prix
Main Motorcycle: T120RT
 
KADUTZ's Avatar
 
Join Date: Feb 2006
Location: in my house
Posts: 2,640
Other Motorcycle: T140V,T140D,T140E,T140J
If you bike is more or less stock you will need a 73 thru early 78 T140 head and bits head one 930 carb plus some internal pieces for your TR7 carb. T140 throttle cables and T140air box setup.

Last edited by KADUTZ; 09-03-2009 at 11:04 PM.
KADUTZ is offline   Reply With Quote Quick reply to this message
Old 09-03-2009, 11:38 PM   #3 (permalink)
Senior Member
SuperStock
 
tip rat's Avatar
 
Join Date: Apr 2008
Location: west sydney
Posts: 222
and why do you want to do that?????????????????????????????albert the tiprat..
tip rat is offline   Reply With Quote Quick reply to this message
Old 09-04-2009, 07:57 AM   #4 (permalink)
Lifetime Premium
Site Supporter
Moto Grand Prix
Main Motorcycle: Triumph Bonneville
 
Join Date: Oct 2008
Location: Bordeaux, France
Posts: 2,886
Other Motorcycle: Triumph Speedtriple
Quote:
Originally Posted by KADUTZ View Post
If you bike is more or less stock you will need a 73 thru early 78 T140 head and bits head one 930 carb plus some internal pieces for your TR7 carb. T140 throttle cables and T140air box setup.
You will also need a dual air control cable
Webby is offline   Reply With Quote Quick reply to this message
Old 09-04-2009, 08:03 AM   #5 (permalink)
Premium Member
Site Supporter
Pole Position
Main Motorcycle: 1965 TR6SR
 
rmak's Avatar
 
Join Date: Oct 2006
Location: Ohio
Posts: 3,348
Other Motorcycle: 2007 Scrambler
I just asked the question in reverse a while back. I got a 78 parallel port with Mkll carbs I'd love to trade for a Tiger set up. Pm me if you're interested, or if you're thinking of selling the head/carb/cable in favor of getting another. I also took off all the airbox stuff if that's needed.
rmak is offline   Reply With Quote Quick reply to this message
Old 09-04-2009, 08:31 AM   #6 (permalink)
Member
Grand Prix 250
Main Motorcycle: 72/3 tiger
 
Join Date: May 2009
Location: laidley area,qld, australia
Posts: 61
Other Motorcycle: 04 america
WHY? WHY? WHY? It is nice when someone asks " is that an old bonnie" you can turn and say " no mate it's a tiger", they are stuffed they don't know. if you want it to go like a bonnie but keep the reliablity of a tiger just put a bigger carby on, mine has a 32mm on it (it was on there when i bought it), it goes hard, even surprises the harley blokes i ride with, one of which is a bike mechanic by trade that use to have a trumpy, he loves it
72TIGER-X is offline   Reply With Quote Quick reply to this message
Old 09-04-2009, 10:12 AM   #7 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: '68 TR6R
 
68TR6R's Avatar
 
Join Date: Mar 2008
Location: Iowa
Posts: 802
Other Motorcycle: 1978 suzuki 125
Dont put two carbs on! Keep it nice and simple like it is. Two carbs=twice the hassle. Way easier to tune the tiger.
68TR6R is offline   Reply With Quote Quick reply to this message
Old 09-04-2009, 11:56 AM   #8 (permalink)
Senior Member
Grand Prix 500
Main Motorcycle: pre '68 Bonneville 750cc
 
Join Date: Jul 2008
Location: Someplace in the NW USA
Posts: 125
Other Motorcycle: 86 Yamaha FJ1100
Extra Motorcycle: Custom mini-bike 165cc
I thought it may require a different head from the pictures I have looked at. It was just a thought. I figured since I may get a brand new carb anyway, why not upgrade a little. I am going to stay single carb on this motor for now, and just get a new one. Not because it's a Tiger and I want to keep it a Tiger, but because it is a lot easier. You see I have a different philosophy on my bike than some of you. I want what I want, personally. I'm not one to follow the crowd, so to speak. If it works for me and I like it, I don't care what others think, or say. Most of my bikin friends think I should own a Harley so I can ride with them. I have to laugh. I have reminded every one of them that while I like them a lot, I don't own a bike so I can ride with them, I own the bike I own because I like this particular one! One the same note, if I had a sweety unmodified purebred 73 Tiger and I liked it that way, I'd keep it that way. But if I wanted to put on Harley forks and a japanese carb I would do just that, due to personal preference. (I can feel people gasping for air right now) So, I bought this bike because I liked the potential it had to me personally. It was a beat up, run down 70's style chopper that had a Triumph frame(not Tiger), motor and forks. Everything else was pretty much Harley. I stripped it down, and built it back up, using as many Triumph parts as I wanted on it. I made it the way I wanted it to look, not the way somebody else wanted it to look. Since I am getting a new carb, I have decided to give a Keihin a try. I have used Amal, as you can see from some of my other posts, so I am getting familiar with them, but as my personal tastes go, I have had enough "experience" with them. I still need to figure out the differences in jetting between the two. I am looking at a Kleihin PWK 30mm as a replacement for an Amal 930 that has a 270 Main jet, 106 needle jet and a 3-1/2 slide?? Do you know any links explaining the jet size difference between an Amal and a Kleihin?

Thanks
TangoMike
__________________
If it's not leaking oil, there ain't none in it.
tangomike is offline   Reply With Quote Quick reply to this message
Old 09-04-2009, 12:01 PM   #9 (permalink)
Member
Grand Prix 250
Main Motorcycle: 1970 Tiger 650 TR6
 
farric1's Avatar
 
Join Date: Jul 2009
Location: Melbourne, Australia.
Posts: 51
Other Motorcycle: 1971 Norton Commando
Extra Motorcycle: 1979 Triumph T140E
Quote:
Originally Posted by rmak View Post
I just asked the question in reverse a while back. I got a 78 parallel port with Mkll carbs I'd love to trade for a Tiger set up. Pm me if you're interested, or if you're thinking of selling the head/carb/cable in favor of getting another. I also took off all the airbox stuff if that's needed.
Hi rmak

If you don't make the trade, and your head is in good shape, I'll buy it off you. Let me know.
__________________
Norton may have developed the oil leak, but it's Triumph who perfected it
farric1 is offline   Reply With Quote Quick reply to this message
Old 09-04-2009, 12:05 PM   #10 (permalink)
Member
Grand Prix 250
Main Motorcycle: 1970 Tiger 650 TR6
 
farric1's Avatar
 
Join Date: Jul 2009
Location: Melbourne, Australia.
Posts: 51
Other Motorcycle: 1971 Norton Commando
Extra Motorcycle: 1979 Triumph T140E
Quote:
Originally Posted by tangomike View Post
I want to convert my 750 Tiger from a single to a dual carb. Before I rush out a buy anything I need some advice. From what I am told, this 73 TR7 750 Tiger is the same motor as a 73 T140 750 Bonneville. Does this mean the Bonneville intake manifold will bolt right on?? Are 30mm carbs the preferred? I assume I will also need a Bonneville throttle cable for dual carbs??

Thanks in advance
TangoMike
Hi TangoMike

There is very little to nothing to be gained by going dual carb on a T140 Tiger. Definitely not worth the bother. Some may even argue that the Tiger pulls better lower down. It's up to you, but the hassles will definitely outweigh any slim advantage you might get.
__________________
Norton may have developed the oil leak, but it's Triumph who perfected it
farric1 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

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 Off
Pingbacks are Off
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Single to Dual Exhaust for 01 955i? bradastan Speed Triple Forum 8 05-12-2009 10:59 PM
Single vs. Dual Cans? dgrtech Street Triple Forum 2 06-09-2008 06:13 PM
Anyone convert to single headlight? Redbeard77 Speed Triple Forum 27 05-11-2007 02:45 AM
dual front brake lines vs. single BulldogHooligan Speed Triple Forum 8 04-05-2007 06:29 PM
CONVERT DUAL HEADLAMPS TO SINGLE? vladislav Speed Triple Forum 2 07-03-2005 04:27 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 05:37 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.