Fuel Injection

EstuaryBoy said:

Who was behind the system on Triumph cars, Berhard??

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Arrrrhhhh! I shouldn't believe everything I hear on these car restoration programmes, you are quiet right, I'm sorry I got mistaken about that British company.

With any of these things, you never know what the effects will be until you try them. I do know one thing - with methanol fuel, getting the mixture just right has a big effect on performance. With petrol the effect is much more pronounced. With fuel injection you can get much more compensation and control over what happens..
I wonder how many guys on this forum have ever tried using different taper needles in their carbs ?

This thread got me curious as to what is possible on older machines. YouTube has a plethora of viddys with guys retro fitting injection systems on older cars, vw dune buggies, and bikes. There are reasonably priced ecu devices like micro-squirt, mega-squirt and others. Loads of discussion forms on how to do the conversions and what sensors to fit.
Our parallel twins make conversion much simplified as only one spark trigger needs to be configured. Injection could be done as a single injector into a one into two mani or dual injector into exisitng manifolds. Modern Triumph/RE aircooled twins did very simplified injection setups and can be good guides for retrofit projects. For example my '13 bonneville keeps the old carb bodies, including throttle and cold start fast idle valve (manually operated) in place, injectors are mounted within those carb bodies. Solves all sorts of fabrication challenges.

We are waiting for someone like you to remove your Triumph fuel injection and installing on a Norton! After you say it works we will all follow! LOL

mean gene said:

We are waiting for someone like you to remove your Triumph fuel injection and installing on a Norton! After you say it works we will all follow! LOL

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That's mean, gene

I have always wondered about Amal needles when compare with Mikuni. There is a huge array of different taper Mikuni needles available, but very few in the Amal range. With fuel injection, you probably get better control over mixture. If you wind the throttle on when you have quicker taper needles, if you were not getting the best possible acceleration, you would never know it, until you changed the needles to a slower taper.
I suspect Amal carbs are pretty crude. The Japanese approach seems to be different.

Love my FI Thruxton's on my 2013 air cooled model have 50k on it with out being touched, my 2016 1200 Thruxton is the same but only has 20k so far.

Ashley

I think the oxygen sensor on bikes with FI, compensates for changes in the weather. With carbs, if you get them tuned to deliver the max., they sometimes become weather dependent. It seems to happen more with two-strokes, but my thinking goes back a bit. The older four-strokes were probably all running too rich. To get a two-stroke to be really quick, you always had to lean them off to the limit.
To me, getting a four-stroke race bike going quick on petrol, is as difficult as getting a two-stroke race bike going quick on methanol. But I know which is quicker. Two-strokes on methanol are ridiculous.

ashman said:

Love my FI Thruxton's on my 2013 air cooled model have 50k on it with out being touched, my 2016 1200 Thruxton is the same but only has 20k so far.

Ashley

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I think I would like to own either of each of those. Sadly, I don't think I ever will.

Al if you ever rode one you be hooked.

ashman said:

Al if you ever rode one you be hooked.

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I've looked at a couple of them. They appear to be very correct in every detail. I have some friends who have them.