KTM Debuts Fuel Injection for Two-Stroke Motorcycles - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 55 Old 03-16-2017, 05:41 PM Thread Starter
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KTM Debuts Fuel Injection for Two-Stroke Motorcycles

KTM Debuts Fuel Injection for Two-Stroke Motorcycles

"The Austrian announced today that it will bring fuel injection technology (called Transfer Port Injection) to its 2018 enduro lineup, which will debut later this May...

Fuel injection for two-strokes promises better fuel consumption, and it means that riders no longer have to pre-mix their fuel. KTM says that its transfer port injection technology provides a whole new experience for riding a two-stroke motorcycle, with better power and rideability."



Great news for dirt lovers!

Especially those of us in California who had to (in effect) give up 2 strokes because of emissions. The KTM's are Euro 4 compliant so should be legal in Cal.

2 strokes baby! Half the cycles but twice the fun!


*edit - with link!*

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Last edited by Spec; 03-16-2017 at 06:11 PM.
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post #2 of 55 Old 03-16-2017, 06:28 PM
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post #3 of 55 Old 03-16-2017, 06:43 PM
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I would give up every bike I own for a modern, 500cc 2-stroke sport bike. I was on the verge of doing just that for the Bimota V-Due, until the real world reports started coming in.

V-twin, 100-110hp, 320lbs with fuel...where do I sign...
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post #4 of 55 Old 03-17-2017, 05:53 AM
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I would rather see DFI. (direct fuel injection) The technology has been available for decades now.
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post #5 of 55 Old 03-17-2017, 10:05 AM
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Never was a 2 stroke fan on larger motorcycles. For a fly weight dirt bike...yeah, I see the advantage but be ready to rebuild them way more often. With modern power valve (adjustable porting) engines, 2 strokes are not that easy to rebuild anymore.

Nope, 4 strokes are the evolution of the engine, I am not stepping backwards.

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post #6 of 55 Old 03-17-2017, 10:21 AM
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Quote:
Originally Posted by RichDesmond View Post
I would give up every bike I own for a modern, 500cc 2-stroke sport bike. I was on the verge of doing just that for the Bimota V-Due, until the real world reports started coming in.

V-twin, 100-110hp, 320lbs with fuel...where do I sign...
it seems that nowdays every manufacturer believes that you can fix almost any bike problem by adding more power and more weight.
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post #7 of 55 Old 03-17-2017, 10:47 AM Thread Starter
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Originally Posted by STCorndog View Post
Never was a 2 stroke fan on larger motorcycles. For a fly weight dirt bike...yeah, I see the advantage but be ready to rebuild them way more often. With modern power valve (adjustable porting) engines, 2 strokes are not that easy to rebuild anymore.

Nope, 4 strokes are the evolution of the engine, I am not stepping backwards.

A 2 stroke rebuild consists of a new piston and rings. You don't want to have to do a rebuild on a 4 stroke.

The power valves are easy to deal with.

I can rebuild a 2 stroke in a couple of hours. Modern 2 strokes last quite a bit longer than they used to. 100 hours on a motor is not un-reasonable. It's not like they are going to drop a valve an explode like 4 strokes do!

You should ride a modern 2 stroke. The KTM/Beta/Husaberg 300 being the definitive example.
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post #8 of 55 Old 03-17-2017, 11:45 AM
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Nice to see innovation still coming on this front!

A few days ago I was talking with a friend about his getting a new Snowmobile (Sled) for next season. He said two strokes never really left the Sled world and the latest ones have some pretty cool tech. He said the fuel mileage was very similar to the modern 4 strokes used but the sleds were much lighter with better throttle response, etc.

Direct fuel injection, direct oiling to the crankshaft bearings and tons of other innovations sound pretty cool.

https://www.ski-doo.com/ca/technolog...ec-engine.html

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post #9 of 55 Old 03-17-2017, 11:58 AM Thread Starter
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Originally Posted by V-Tom View Post
Nice to see innovation still coming on this front!

A few days ago I was talking with a friend about his getting a new Snowmobile (Sled) for next season. He said two strokes never really left the Sled world and the latest ones have some pretty cool tech. He said the fuel mileage was very similar to the modern 4 strokes used but the sleds were much lighter with better throttle response, etc.

Direct fuel injection, direct oiling to the crankshaft bearings and tons of other innovations sound pretty cool.

https://www.ski-doo.com/ca/technolog...ec-engine.html

..Tom

My son moved to Colorado a couple of years ago. He grew up in the SoCal desert and his last bike was a CR250 2 stroke.

Anyway he gets his first experience with snow mobiles. 800cc 2 stroke twin motors! He couldn't believe how fast they are. He's says they pull a lot harder than his 250!

There are 4 cylinder 2 strokes also! Stick one in a bike!

Beast.

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Last edited by Spec; 03-17-2017 at 12:01 PM.
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post #10 of 55 Old 03-17-2017, 03:00 PM
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Originally Posted by Spec View Post
A 2 stroke rebuild consists of a new piston and rings. You don't want to have to do a rebuild on a 4 stroke.

The power valves are easy to deal with.

I can rebuild a 2 stroke in a couple of hours. Modern 2 strokes last quite a bit longer than they used to. 100 hours on a motor is not un-reasonable. It's not like they are going to drop a valve an explode like 4 strokes do!

You should ride a modern 2 stroke. The KTM/Beta/Husaberg 300 being the definitive example.
I get it on a dirtbike...maybe. But, even there I like 4 strokes.

Streetbike....nope. For example....my last V1 has over 100,000 miles and is no where near a rebuild.
100,000 miles/40mph average speed = 2,500 hours.

100 hours would mean 25 rebuilds. A cylinder head may go 3 or 4 rebuilds. Injection oil...etc etc.

See my point, flyweight, 2 stroke dirtbike for low miles/hours...maybe.

KTM owners are used to rebuilding stuff so they will love it.

"If its not broke yet, it can still be fixed"
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