efi to carbs... Done! - Page 2 - 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

Club Cafe' Cafe Racers; the Thruxton and other custom cafe styled bikes.

Reply
 
LinkBack Thread Tools Display Modes
Old 12-26-2012, 07:16 PM   #11 (permalink)
Senior Member
SuperSport
Main Motorcycle: Triumph Tiger 800XC
 
NORTY FLATZ's Avatar
 
Join Date: Nov 2012
Location: Carlsbad, Ca. USA
Posts: 969
Other Motorcycle: Harley FXD
Did you dyno your bike before the change? If so, what, where are the increases? Also, did your bike throw any codes?
Reduction in fuel range?
__________________
You can't put a price on a good time!
Also a certified MSF RiderCoach.
NORTY FLATZ is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-27-2012, 04:40 AM   #12 (permalink)
Member
Grand Prix 125
Main Motorcycle: black bonnie
 
Join Date: Aug 2010
Location: Italy / Sardinian's east coast!
Posts: 35
Quote:
Originally Posted by mikeinva View Post
You used stock carbs and it makes more hp how so?
i'm sorry for my bad english, i mean that the stock 2010 engine make more hp than the 2009, lcd odometer has hc pistons and according to the service manual it make more hp:

790 bonneville 62 hp / 60 nm
865 bonneville carbs 64 hp / 68 nm
865 bonneville efi 66,1 hp / 67,8 nm
865 efi with lcd odo 68,1 hp / 68,4 nm

when i was an injected i have a bad map just because i don't have a dyno near where i live, now with carb the bike run much more better and i noticed a reduction in fuel range
megalo is offline   Reply With Quote Quick reply to this message
Old 12-27-2012, 04:42 AM   #13 (permalink)
Member
Grand Prix 125
Main Motorcycle: black bonnie
 
Join Date: Aug 2010
Location: Italy / Sardinian's east coast!
Posts: 35
Quote:
Originally Posted by 1peter View Post
What did the parts cost ?
i've bought everything used, the hardest part to find was the flywheel that i've paid 200 euros
megalo is offline   Reply With Quote Quick reply to this message
Old 12-27-2012, 06:36 AM   #14 (permalink)
Senior Member
Grand Prix 500
Main Motorcycle: 2000 Triumph Legend TT
 
Join Date: Jun 2011
Location: Virginia
Posts: 120
Other Motorcycle: 1999 Honda Shadow ACE
Quote:
Originally Posted by mikeinva View Post
well they will if you use stock carbs but not the case if you go to flat slide carbs .Then the carb bike can make more hp then the efi bike that may change sometime but it hasnt yet .
A valid argument, but what if I went with a non-stock EFI system tuned properly? I don't think the non-stock carburetors would have a chance.


You had a bad map? Was this from your own doing?
XeNoMoRpH is offline   Reply With Quote Quick reply to this message
Old 12-27-2012, 10:21 AM   #15 (permalink)
Senior Member
SOTP Vintage Series
Main Motorcycle: 03 T100
 
mikeinva's Avatar
 
Join Date: Mar 2007
Location: richmond va
Posts: 7,736
Quote:
Originally Posted by XeNoMoRpH View Post
A valid argument, but what if I went with a non-stock EFI system tuned properly? I don't think the non-stock carburetors would have a chance.


You had a bad map? Was this from your own doing?
That is the trouble at this time no one has come up with a non-stock efi system that works as good as the non stock carb system for these bikes yet.Some one will in time im sure but it will cost big $$$ and may not make any more hp .The up to date flat slide carbs will be hard to beat at high rpm.
That is where everyone that has tried to build the motors on these bikes with efi has failed to match the carb bikes.I think someone will come up with a efi system that will run with full modded carb motors on these bikes but I think you will have to change most of the system to do so.To make these motors run with big bore /stroker kits you need more air flow then most of the sport bikes have 2 big piston that have to feeed through 2 throttle boddies not 3 or 4 smaller pistons that feed through 3 or 4 throttle bodies.takes alot more air for a 100hp twin then it does for a 100hp triple or 4 banger per bore.triumph did not design the efi systems on these bikes for that kind of air flow they didnt plan on any of us takeing these motors to that high of hp.There system works great on near stock bikes that it was designed to handle.What would one need to get the efi up to do the job?throttle boddies ,injectors ,maybe fuel pump and maybe even a better ecu.That will add up to about 3 times the cost of flat slide carbs maybe $3000 to $4000 add that to the cost of building the motor and things get crazy.
__________________
Why do I feel young on my bike
mikeinva is offline   Reply With Quote Quick reply to this message
Old 12-27-2012, 12:10 PM   #16 (permalink)
Member
Grand Prix 250
Main Motorcycle: 2012 Thruxton
 
nicholas900's Avatar
 
Join Date: Aug 2012
Location: Buffalo,NY
Posts: 41
Other Motorcycle: 2013 Ducati Diavel
Nice job bro! I love the front facing picture. Looks so nice without the guages sticking up. I want to get rid of my guages and use two small digital guages mounted in a BC top yoke. But it seems hard to do on efi bike.

Don't think I'd go that far myself. But cool none the less.
nicholas900 is offline   Reply With Quote Quick reply to this message
Old 12-27-2012, 08:29 PM   #17 (permalink)
Member
Grand Prix 250
Main Motorcycle: Thruxton/Daytona 675R
 
ThruxOZ's Avatar
 
Join Date: Nov 2012
Location: Melbourne
Posts: 47
Extra Motorcycle: Yz250f
Just wondering could you have just converted your EFI bike to fcr carbies by only fitting carbies. Fitting fuel reg rated at 6psi?
Leaving the EFI ecu to control just the timing?

Last edited by ThruxOZ; 12-27-2012 at 10:22 PM. Reason: Addition info
ThruxOZ is offline   Reply With Quote Quick reply to this message
Old 12-28-2012, 05:17 AM   #18 (permalink)
Lifetime Premium
Site Supporter
Legend
Main Motorcycle: 2009 Bonneville SE
 
Forchetto's Avatar
 
Join Date: Jun 2009
Location: Asturias, Spain
Posts: 13,526
Other Motorcycle: Yamaha XV1100
Extra Motorcycle: Qingqi QM200GY-BA
Quote:
Originally Posted by ThruxOZ View Post
Just wondering could you have just converted your EFI bike to fcr carbies by only fitting carbies. Fitting fuel reg rated at 6psi?
Leaving the EFI ecu to control just the timing?
I think he's left a few items off his conversion list on post 5, minor details such as a carbed bike's fuel tank (one of the pictures shows a gas tap, not present on an EFI tank), then he would have needed an igniter and the EFI ECU binned. This is because the nature of the ignition signals for EFI are different from the carbed bike, so he couldn't use the original ECU.

Altogether, I can't see all this trouble and expense as worthwhile myself...

So now we have:

Fuel tank
Flywheel
Main wiring harness
Carbs
Ignition coil
Igniter unit

Last edited by Forchetto; 12-28-2012 at 05:20 AM.
Forchetto is online now   Reply With Quote Quick reply to this message
Old 12-28-2012, 07:12 AM   #19 (permalink)
Senior Member
SuperSport
Main Motorcycle: Speedtriple!!
 
triplestrength's Avatar
 
Join Date: Apr 2008
Location: Cornwall
Posts: 980
Other Motorcycle: Triumph Trophy 900
Extra Motorcycle: Honda CB400AT
Why not buy pre EFI bike and mod that surely more cost effective.
Must be a few low mileage one's out there.
I still struggle to believe that carbs would produce more useful power.
But each to their own.

Sent from my GT-I9100P using Motorcycle.com Free App
triplestrength is offline   Reply With Quote Quick reply to this message
Old 01-04-2013, 09:23 PM   #20 (permalink)
Senior Member
SOTP Vintage Series
Main Motorcycle: 2005 Bonneville Blue 790
 
Join Date: Sep 2006
Location: Central Maryland, USA
Posts: 7,817
Other Motorcycle: 1973 CB450, long gone
Quote:
Originally Posted by triplestrength View Post
Why not buy pre EFI bike ...
I was wondering the same thing.
__________________
Marty
2005 Bonneville Blue 790cc, AI removed, Staintunes RC, no snorkel, inlet enlarged, 118/40/NBZT "Thruxton" needles/1 shim/3 turns, Ikon 7610s, Ricor Intiminators, Dunlop GT501s, D9 gauge panel, tachometer.
Baltobonneville 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
Changing monoblocs carbs for concentric carbs pre unit Thruxton Classic, Vintage & Veteran 10 02-07-2014 01:11 AM
928 carbs blackedout Classic, Vintage & Veteran 1 01-29-2012 07:19 AM
CR carbs vs CVK carbs? jonrem Twins Technical Talk 17 01-03-2012 02:55 PM
carbs orp Twins Technical Talk 13 03-18-2007 11:48 AM
Trophy CV carbs at varying altitudes.... EFI vs CV Carbs TiggerTwo Trophy 9 01-17-2006 01:07 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 01:24 AM.



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

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.6.0