The Fuel Injection Thread

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The Fuel Injection Thread

Post  ADVJake on Sat Jan 24, 2009 8:29 am

ok so who has done it?
I'm seriously considering it for the benefits of smoother driveability, less tuning hassles, fuel economy, no flooding, ease of starting.

Carbs are a great thing for simplicity, but are a compromise everywhere, except maybe the FCR41, but then you have something that drinks the gas and still floods

All the info i can find on TT are for the XR-L. Not sure where to start.


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Re: The Fuel Injection Thread

Post  joenuclear on Sun Feb 22, 2009 6:36 pm

Anyone?
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Re: The Fuel Injection Thread

Post  Dave P on Sun Mar 15, 2009 9:13 am

That's to futuristic for me, but here's a bump.
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Re: The Fuel Injection Thread

Post  rcnutt on Sun Mar 22, 2009 8:24 pm

the new trx700 quad has FI and electic start that could be added to a pig, seeing that the 700 engine is a 650r punched(and maybe stroked alittle). pricey parts though, but what a nice clean install.
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+1

Post  Mythic on Mon Mar 23, 2009 12:04 am

Yeah, I've seen alot of talk about the TRX option on other boards, but everyone seems to balk once they figure the psrts cost. Maybe once the quads start showing up for salvage & parted out this will be an option, but buying all the parts from Honda doesn't make $ sense right now
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Re: The Fuel Injection Thread

Post  oldxr on Fri Jul 31, 2009 5:21 am

i will be working on this soon.the ecm will be a unit called a microsquirt-it is programmed with a laptop.it is an off shoot of the megasquirt system i use on my car.i will also be using a wide band 02 system for an input to the ecm made by innovate motorsports.this will allow the ecm to be accurate at all altitudes and air temps.i will be able to have a digital afm gauge to see while riding.i will be scrounging for an rc51 throttle body assembly on ebay-somewhere i read where you can split them.or have 1 made by a comapny called extrudeabody.the innovate wide band will come soon though because i want to try it to check my carb.just bought my pig used .it has an edelbrock on it but it also has stock carb too.probabaly a run off between the eldo and oem carb while being monitored by the wide band 02 is in the works.reason for efi is the ability to correct for altitude change automatically.the eldo seems a little rich right now
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I'd be fascinated to watch your progress

Post  Bump on Fri Jul 31, 2009 6:10 pm

I don't see any advantage to the edelbrock for the $. Perhaps a little better MPG. But I see a lot of advantages in EFI.

Thx.
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Small Engine FI

Post  dougc on Thu Dec 29, 2011 5:50 pm

Bump wrote:I don't see any advantage to the edelbrock for the $. Perhaps a little better MPG. But I see a lot of advantages in EFI.

Thx.
Restarting an old thread...anyone have an opinion on this:

Small Engine FI

Looks very interesting to me and the TB size seems to be right in the ballpark.

Currently running stock and Edelbrock on three different XRRs and all run well but the idea of custom, laptop tuning and two different modes is appealling to me. Price is about right too, imo. Necessary mods don't appear to be too difficult.

Comments?

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Here's a Throttle Body article from Dirt Bike

Post  Bump on Wed Aug 29, 2012 7:15 pm

http://www.dirtbikemagazine.com/ME2/dirmod.asp?sid=&nm=&type=news&mod=News&mid=9A02E3B96F2A415ABC72CB5F516B4C10&tier=3&nid=B631B1AD3B904E2983337561642021A4

There's a guy in the Downey area who has been working on a TB setup for a couple of years now. I can't remember his name but he and his brother's shop are well known in LA and beyond. One brother has the jet ski shop and the other is more dirt bike I think.

Damn memory, 2nd thing to go the ol timers say... Frustrated
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Here it is

Post  Bump on Wed Aug 29, 2012 7:28 pm

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Re: The Fuel Injection Thread

Post  modette on Wed Aug 29, 2012 8:55 pm

So anyone install any of these?
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RE: Fuel injection thread

Post  dougc on Fri Aug 31, 2012 7:46 pm

modette wrote:So anyone install any of these?
Not I. Both of the replies above seem to be about FI replacement throttle bodies or aftermarket throttle bodies to fit already fuel injected moto engines.

I don't think any apply to carbureted engines? No clue how difficult it would be to retrofit some other Honda model FI for an xrr.

The "small engine FI" link I supplied seems like it might be the easiest to modify. I'd really like to give it a try but lack of $ is holding me back for now.

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Hey Doug

Post  Bump on Fri Aug 31, 2012 8:23 pm

I spoke with the owner at R&D twice last year about using his TB on one of my XR650Rs and he said the barrel was easily large enough and it should be a great improvement.

I think the deal out of AZ might apply to someone grafting the TRX700XX EFI to the old XRR but I did not call as it seems unworthy of all the effort.

I hope that helps
dougc wrote:
modette wrote:So anyone install any of these?
Not I. Both of the replies above seem to be about FI replacement throttle bodies or aftermarket throttle bodies to fit already fuel injected moto engines.

I don't think any apply to carbureted engines? No clue how difficult it would be to retrofit some other Honda model FI for an xrr.

The "small engine FI" link I supplied seems like it might be the easiest to modify. I'd really like to give it a try but lack of $ is holding me back for now.
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EFI 650R

Post  magickennyj on Sat Mar 09, 2013 3:05 am

i would like it on my bike for altitude changes over 2500 hundred feet above sea level the Yamaha tenere 660 has EFI, i like to tour high altitude Mountains and EFI is the only way for the Red Bull to get high with out re-jetting let me know if you end up getting it done, did you see the CR500 with EFI made by some guys in New new zealand http://www.youtube.com/watch?feature=player_embedded&v=Y91Jms6MyCY
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Re: The Fuel Injection Thread

Post  Mad Frosty on Sat Mar 09, 2013 12:54 pm

I did some research in to this , the best way would be to get complete FI system from another donor bike/quad
( yamaha 660/ 700 engine , honda trx 700 ,... ) the problem is that the transplantation would be very complex , the hardest bit to me is the fuel pump fittment , the whole thing would be expansive and of questionable reliability , but if there was properly designed and well build aftermarket kit with waranty i would certainly buy one .
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RE:EFI update Supermoto Junkies

Post  magickennyj on Thu May 02, 2013 2:59 am

Some Supermoto Junkies are making a go of the XR650R EFI TRX 700 EFI conversion check out there thread talk sounds like they know what they are doing. http://www.supermotojunkie.com/showthread.php?76565-XR650R-with-TRX700-crank
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Re: The Fuel Injection Thread

Post  Mad Frosty on Thu May 02, 2013 9:30 am

Thanks for the heads up nice
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why would you want it

Post  temporary kiwi on Mon Aug 12, 2013 12:12 am

the beauty of the pig is its simplicity, if you want fuel economy, fit an fcr carb, if you want performance, fit an fcr carb, ah well , if your a techno git , fit ya fuel injection

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Re: The Fuel Injection Thread

Post  Mauser on Mon Aug 12, 2013 8:17 am

temporary kiwi wrote:the beauty of the pig is its simplicity, if you want fuel economy, fit an fcr carb, if you want performance, fit an fcr carb, ah well , if your a techno git , fit ya fuel injection
If you want a bike that starts and stops like it supposed to then stop with stock Bump 

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Re: The Fuel Injection Thread

Post  Chris_w_65 on Fri Oct 11, 2013 9:59 pm

Fuel injection is on my bucket list - I have to tick that one before I can get to the next one - TURBO Bananatool 
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