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Lectron carb - 2017 300EXC

53K views 159 replies 31 participants last post by  Caravan Monster  
#1 ·
Finally got to install the Lectron carb a couple of days ago and tested for first time today. Had to mess around a bit to get the correct amount of throttle free play but easy enough.

On the 2017 bikes you have to replace the throttle body and throttle cable (because KTM's new throttle body and cable is a very different) so what Lectron Fuel systems and also Slavens Racing does is put together a package for you which contains a Motion Pro Vortex throttle body, a Vortex throttle cable, the carb and a metering rod adjuster.

I also ordered a set of ODI Black half Waffle lock on grips as I wanted to keep the throttle grip the same as before (ODI Black Half Waffle Lock-on Handlebar Grips | ODI | FreestyleXtreme | United Kingdom)

Installation an absolute breeze. Everything just fits. I didn't make any adjustments to the carb whatsoever. Just put it on and went riding. Then adjusted the idle screw a bit. That's it.

The choke is on the 'wrong' side of the carb but as it happens on the new 2017 bike it's much easier to access from the other side now! Have a look at the pic below.

RESULT: I can honestly say the difference is night and day. The bike revs clean and crisp all the way through! No discernible hesitation or bog anywhere. I can now ride a gear higher and even then when you open the throttle it just pulls. It feels like the best jetted bike I have ever owned. Honestly, don't think any carb bike I have ever had felt this crisp and good. Best bit of money I think I have ever spent.

The carb has a unique feature in that the bowl overflow tube routes back into the carb so you never loose fuel, it gets re-used!

I am getting a tiny bit of splurge from the exhaust that I'll email them about to see if it's an issue but I don't think so. Also, I had to raise the idle a bit more to stop the engine from stalling on steep downhills - not an issue as it doesn't need raising so much that it makes it idle high.

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#5 ·
I bought direct from Lectron. Emailed them, explained what model bike I have and they put a recommended package together.

38mm Mikuni replacement $385
Vortex Throttle $27
Vortex Cable $35
Metering rod tool $15
Shipping $85 – to UK

Thanks to all the Brexit voters it now works out nearly ÂŁ100 more than before. :rolleyes:

Yes, got stung for import duty as well but wasn't so bad.

Jeff Slavens also does a complete package.
 
#19 ·
Something to bear in mind is that the Duty and VAT are calculated after the currency exchange. So apart from the parts and shipping costing more (pounds) the Duty and VAT also cost more (and is charged on shipping).

Shortly before brexit something that was $145 incl shipping became ÂŁ100 + ÂŁ3.75 duty + ÂŁ20.75 VAT = ÂŁ124.75.

Now, that $145 cost becomes ÂŁ112 + ÂŁ4.2 duty + ÂŁ23.24 VAT = ÂŁ139.44

Parts imported from the USA are presently about 12% more expensive than they were just before the vote.

On the carb - I've heard a lot of good stuff about the Smart Carb too. The billet ones are pretty expensive but there is supposed to be a cast one soon (maybe even available now).
 
#7 ·
My order was for more than the carb, sorry not to be specific Hubert. Seeing as you might have been part of the reason why it will be costing all of us more money why don't you work out the carb part for me me Hubert. It's obviously important to you. Don't forget to add the inflated import duty due to the poorer conversion rate as well. Cheers bud. ;)
 
#10 ·
I have a 36mm Lectron fitted to my 2013 300, I had to cut the boot rubber but that was no big deal. Like you I have found it to be a great carb, no fiddling with jets or anything like that. I think that I leaned off the needle 1/4 of a turn, in fact I went as far as 3/4 before it started to to go a little flat at the bottom end. You could try 1/4 of a turn to see if that cleans up the exhaust a bit. As the carb makes the power delivery so smooth I fitted the red spring about 1 turn from flush, I've fitted a FMF Gnarly too, the bike is a bit of an animal on the lanes but its good fun!
 
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#18 ·
whats your name CTD ,mine is Darren Smith, be interesting to compare lap times as I sat on me bum in the pits for a while with a mate who's 310 wouldn't start( plus I was Fuked after 1st 2 laps,i need to start slow and build rather than trying to ride fast and forgetting to breathe
I was number 111 in the over 50's B class.
I just plod around at a steady/slow pace for the whole race. I was totally knackered afterwards.....
 
#21 ·
did you have the mikuni properly jetted before the swap? or was it nearly right?
 
#22 ·
I had the Mikuni very VERY close. I was on KTM450yeah's settings, the bike felt great, I continued to play around a with air screw, pilot and main. It was pretty good but a couple of highly rated riders rode the bike and both commented it was very good but 'could do' with this or that. I liked the reviews I read about the Lectron, thought I'd give it a try and I am glad I did. I never realised how different it could be!! Honestly, it's better pretty much everywhere through the Rev range. I've only done 2hrs on the bike since changing so keep in mind it's a new toy but I keep recognising areas where it's better. Yet to find any negatives at all. Not done a full fuel range test yet.

That said, I am in a fortunate position that the investment I made in the carb does not put me in the position where I have to talk it up. If it's shit I would say not to waste your money. At this point I am dumb founded that this hasn't been standard equipment on all carb bikes!
 
#24 ·
i think those seeking a perfect set-up may well have to go to a Lectron,on the Beta,which always felt good it cleaned it up,but what it also does do is compensate for all the variables (altitude,temp,humidity)that change how a carb will fuel the bike so there is no need to adjust,some of you '17 riders seen to need to adjust during a long ride.My limited experience with the Minuki on my husky was that it never ran clean and I didn't really know how to cure it great in the morning but shit in the arvo,and I think it is a fault if I had to break the carb down to make adjustments while out riding,I was going to go Lectron for the husky,fortunately I bought a world class winning bike instead and put one on because i was in a position to do so.
 
#25 ·
I think it's great that there's an option to fine tune without the trauma that some people experience with the mikuni carb purchasing the lectron softens the frustration I'm more than happy with the mikuni and think as time ticks on more needles and advice will present itself here and there and the initial negativity will dissipate
:)))
 
#29 ·
I bought direct from Lectron. Emailed them, explained what model bike I have and they put a recommended package together.

38mm Mikuni replacement $385
Vortex Throttle $27
Vortex Cable $35
Metering rod tool $15
Shipping $85 – to UK
....
 
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#37 ·
quick release..
 
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#46 ·
If the Samco stuff is silicon based I would not touch it with a barge pole! Silicon turns to jelly when in contact with petrol (not nice orange or strawberry jelly either!) They coat in inside of the hose to stop this but the coating cracks! I know this from messing about with V8 engines with 4 barrel carbs, the crap gets in the carb and the engine quits running!

EDIT...I guess what I'm calling the 'coating' you guys are classing as the inner tube, the stuff I saw I would not class as an inner tube as it was far too thin to be called that.
 
#47 ·
this lectron issue is interesting ... I recently tried the cast smartcarb (2014 300 exc) and was less than impressed with either the fit or the performance ... stuck with the carb - which was fine - but I was intriqued by the whole jetless carb debate.

The lectron fits without hassle and performs that well? I wonder why the lectron is better than the smartcarb ........