To Fuel Inject or not Fuel inject that is the question

[stevethelondoner]

Hey guys,

Ok as ya know by now I have a 2007 speedmaster.....been thinking to fuel inject or not. What is your honest opinion on this subject. Disadvabtages and Advantages. Has anybody done it to theeir bike? Do ya like it better then the Carbs?

I like the Choke and Carbs but I have heard about the fuel injection and got to wondering.

Cheers :y18: :y18:

Ride Safe

 

[CarlS]

Pro's for fuel injection

More efficient, should give better mileage, power and torque
Adapts to altitude and air pressure changes
Once EFI is mapped you forget it.

Con's

Expensive to convert from carbs to EFI
Tuning is more expensive, requires a computer and mapping program
More expensive to make power mods such a free flow pipes, air bx mods, etc because of the remapping required.

 

[CarlS]

A member here is experimenting with EFI on a Speedmaster. When he gets it right, he will no doubt sell it as a kit. I don't mind carbs; I grew up with them and know how to rejet and maintain them.

 

[stevethelondoner]

Carl,

I like the fact of choking the bike before setting off, getting it warmed up and all, seem like all part of the build up to go and ride. I don't know enough about carbs to mess with them. I re-jetted the bike with a buddy of mine but thats all we did. All these other test that i have heard ya speaking of in here I have no idea on. I know I had that trouble through the toll road last week and today it played up with the starting after riding a while. OK it stood for a about 1.5 to 2 hr but it should of kicked without choking. I thought the bike wasn't gonna start. Made me swallow a few times mate let me tell ya.

Maybe I should get ya to ride it and tell me what ya think. i dont get no backfire or popping with her but I am a bit worried that the carbs aint right. I hear shimming the needles and all sorts in here and I didnt do any of that. Worries me mate cause i want her to run real nice.

Ride Safe mate....hope all is well

 

[CarlS]

Steve, trash in the fuel line line will plug up injectors just as it will plug up carb jets. If that is the source of your problem, it would affect it even if you had EFI. If it is an electrical problem (connections or a sensor), it would also adversely affect EFI. EFI may be a little more user friendly than carbs; but it is not maintenance free either. Injectors can and do get clogged. I can tell that it is easier to clean a carb than injectors.

I would be glad to ride your bike and see what I think. One thing you can do is to remove the fuel bowls and check them for sediment. You will need a carburetor screw kit if you do this. The stock carb screws are soft aluminum (to prevent stripping and the screw heads are very easy to mess up. You need the proper size screw driver to remove them. The replace screws are harder and the heads don't strip. NewBonneville.com sells these kits. I think Bellacorse.com does also. I would be glad to help you pull the bowls.

 

[The Seeker]

Fuel injections is great....IF it came on the bike.

 

[stevethelondoner]

Carl,

I may take ya up on that mate....and we need to get these bikes out and ride mate big time. Me Harley mate and I went out yesterday to the Lakeridge Winery and Vineyard have ya been there mate? He had his Mrs. with him she likes wine so it was an awesome trip. It was one of those on Sunday mourning hey ya wanna come. At one stage on the way back there was about 6 other riders came up behind us and we all rode for a few miles. We went to a German Bakery for Lunch called Yalaha Bakery as well.

As far as me bikes goes I probaby will get some help from ya seeing as you have been around the Triumphs and Bikes a heck of a lot longer then I have.

Cheers mate

Ride safe

 

[gumpt1oo]

Steve, don't be too worried about fiddling with the carbs, it all part of the fun!
Seriously, if you do strip your carbs to clean them make sure you don't overtighten screws etc and make sure you do the work on a clean bench. Where carbs are concerned cleanliness is very important.
Here is a link to a guide on carbs. It tells you what each part does, and gives a jetting guide for the triumph twins with various mods.


http://www.triumph-bonneville.com/images/Carb%20Jetting%20Info%202007.pdf

 

[CarlS]

Steve, I stop in at the Yalaha bakery every time I am over that way. I take back roads from Zellwood all the way over there. I make frequent trips to the Florida National Cemetery at Bushnell for PGR missions and go right through Yalaha and Okahumpka. There is some fine riding over that way. Give me a shout when you want to ride again. I'm all for riding.

 

[stevethelondoner]

[quote author=gumpt1oo link=topic=2088.msg14571#msg14571 date=1223909341]
Steve, don't be too worried about fiddling with the carbs, it all part of the fun!
Seriously, if you do strip your carbs to clean them make sure you don't overtighten screws etc and make sure you do the work on a clean bench. Where carbs are concerned cleanliness is very important.
Here is a link to a guide on carbs. It tells you what each part does, and gives a jetting guide for the triumph twins with various mods.


http://www.triumph-bonneville.com/images/Carb%20Jetting%20Info%202007.pdf
[/quote]

Thats awesome mate I appreciate the link.......

Cheers

Ride Safe

 

[dazco]

Personally if i want EFI i want a bike designed with EFI. So while it's just my opinion, i would say that if you want EFI sell the 07 and get the EFI 09 when they arrive. That said, one great advantage, and even the people who've ridden and own the EFI models are all saying the power response is very flat from 0 to redline. myslef i would much prefer EFI because IMO it is far more hiccup free. May carbed bike sometimes stalls or other such imperfections in power delivery. EFI is a lot more accurate in fuel delivery and doesn't have the flat spots and hiccups that carbs can have. Not to mention the new EFI america and speedys are 7 more HP supposedly. (according the specs on the T website)

I'd suggest waiting thill the 09's arrive and demo one. that should answer your questions better than any of us can. But in any case i surely wouldn't want to implement FI on a carb bike. Your chances of a bad setup are extremely good. Even the factory who has far greater resourses often don't get it right the first time. Triumph admits it took them years to really get a handle on EFI.

 

[WHOLE IN THE HEAD]

I went to Rocket Motorcycles (San Diego Triumph Dealer) and asked abot an EFI retro kit for my '05. They said there wasn't one and did not try to sell me on a custom job. I took that as advice to not eff with it. So I won't.

 

[otherwise]

I went to Rocket Motorcycles (San Diego Triumph Dealer) and asked abot an EFI retro kit for my '05. They said there wasn't one and did not try to sell me on a custom job. I took that as advice to not eff with it. So I won't.

Very funny.

 

[DaveM]

I think that was sound advice as I will not try it either on my one

 

[CarlS]

I have no desire for fuel injection on my Bonnies. I have both dialed in and they run fine.

 

[rodhotter]

i love my 2012 bonnie with the 17" mags for its great easy handling but if i had a choice carbs would be on it but will not convert it. although less efficient and powerful i love the cheap + easy simplicity. although if you know how a well tuned FI engine is the nuts as it can be precisely fueled with a keystroke on your laptop

 

[otherwise]

EFI for me when ever possible.
Would never try to convert from carbs to EFI or from EFI to carbs because of cost.
Almost certainly cheaper to trade in one bike and purchase another than convert.