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Discussion Starter · #1 · (Edited)
So summer has arrived,and i thought it would be a good idea to install my sm wheels onto my 2012 ktm 350 exc.
Before


2011 350 sx-f Graphics/ Plastics and decals where used off-road.

So Far Parts Ordered.....
Full White Plastics Kit - MX1 Australia (Acerbis Retailer)
2012 "White Chrome Graphics" From Ktm PowerParts
Orange Frame Protectors - Ktm PowerParts
Smr Fork Guards Black in stock --- White on backorder in Austria Still Pending
White Sm Fender From Ktm PowerParts
Husaberg FS570 stand - Husaberg Spare Parts
2011 350 sx-f fuel tank complete with fuel pump - EBAY
Male Fuel Quick Release Connector -Ktm Spares
EFI Fuel Safe Hose Clamps - EBAY
Small Mirrors - EBAY
320mm Relocator- Ktm PowerParts
DNA 17" wheels

If you need any part numbers feel free to ask.

While those parts took there time to arrive, i started dismantling the bike.
Front Fender Off And Head Light Mask.
-Force radiator guards anodized orange, look good and protect the radiators well.



Radiator Shroud and seat off.



Both Air Box Covers Removed



More to Come...
 

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Discussion Starter · #4 · (Edited)
Ok onto the wheels installation

Front wheel installed, With 320mm Relocator and black fork gaurds



Rear Wheel Installed,Chain(non o-ring) And Husaberg FS 570 smaller kick stand installed
I've gone for a 13t, 44t set up, Shall be interesting to see how the motor goes



Kick Stand Comparison
Original kick stand top
Husaberg Stand Bottom

 

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Discussion Starter · #5 · (Edited)
Parts Have Arrived

Parts Ordered From KTM
Headlight Mask, Sm Fender and Frame Protectors



Box From MX1
Acerbis Plastics Kit



Inside the Box.....





The Airbox

 

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Discussion Starter · #7 · (Edited)
Reassembling the Bike

Rear Fender, Airbox and a clean airfilter installed.



Airbox Covers



Radiator Shrouds And Tank



Sm Front Fender and HeadLight Mask



FINISHED :D



More To Come, Black sx-f tank will be install soon.
 

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Discussion Starter · #16 · (Edited)
SX-F black tank

So the tank has arrived and a few parts to make it fit to the exc.

The Tank.



The sx tank stock has reverse fuel connectors, i ordered a male connector for the tank so i wouldnt have to mess with the hose on the throttle body.



The tank with a new fuel connector



So now the fuel tank can connect, i've used tape over the EFI safe hoseclamps.


More Problems to come.....
 

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Discussion Starter · #17 ·
Next Problem...

If you have a thermo fan installed this will have to be removed.



Next Issue

Electrical Connections dont match up for the fuel pump

Heres, the stock 3 pin exc clear tank connections



2 pins for power and 1 pin for low fuel



This is the sx black tank 2 pin connector



Pretty Simple, just need an adapter....

Did a bit of research and found out that ktm use "AMP superseal connectors"

Ordered a 3 pin female, and a 2 pin male connector
 

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Discussion Starter · #19 · (Edited)
Fuel connections

curious as to what the third wire/fuel line does. the SXF only has 2 wires and fuel lines attached to the pump, the EXC has a 3 wire connecter and 3 lines. one feed and one return makes sense, but the third one...

btw, did the sxf tank come with a complete fuel pump assembly? and if yes, wouldn't it have been possible to swap over fuel pumps and base plates to solve the connecter issue with the parts at hand?
Know i ordered the tank i looked at theses 2 photos from the 350 sx-f and 350 exc spare parts book

350 sx-f



350 exc



the fuel pump has different connections on both tanks, and if you look at the exc connection point, there is no fuel hose connection. The sx-f tank has 2 connections the power and hose at the back of the tank. The exc fuel hose exits the tank at the bottum of the tank.

So back to your original question , I bought a 2011 250 sx-f fuel tank, compete with fuel pump .If you purchase all the parts from Ktm it will cost around about 700$ Australian dollars, I manged to get the tank complete brand new for $350 AUD
shipped. And no you can't transfer the fuel pump over.
 

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Discussion Starter · #20 ·
curious as to what the third wire/fuel line does. the SXF only has 2 wires and fuel lines attached to the pump, the EXC has a 3 wire connecter and 3 lines. one feed and one return makes sense, but the third one...

btw, did the sxf tank come with a complete fuel pump assembly? and if yes, wouldn't it have been possible to swap over fuel pumps and base plates to solve the connecter issue with the parts at hand?
The 3rd wire is like a switch it gets a positive from the pump and when the level gets to low the switch closes and the 3 pin gets 12v which powers the low fuel light.
 

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Discussion Starter · #21 ·
Connectors Have Arrived

The 2 connectors i need to connect the fuel pump have arrived.

The 3 Pin connector Male / female



The 2 Pin/ 3 pin male



A rubber cable with 2 wires inside should do the trick





Adaptor Completed

 

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Discussion Starter · #22 ·
SX-F black tank

All problems seem to be sorted, so time to fit the tank.

Sx-f tank with the adapter installed, with black tape to protect it.



Next Problem......

All KTM exc range 2t and 4t have this thermo thing..... it has to go.



Plastics dont line up, so it needs to go



Thankfully samco sports have a kit to remove this, and its orange bling aswell :D



Theses are the old hoses



Thermo fan bracket removed, and electical thermostat switch removed





Right Radiator installed



Hoses Install Complete

 

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Discussion Starter · #23 ·
2012 350 exc Supermoto Conversion complete

All done, sx-f tank was an obstacle, but thankfully it all works.

\/ \/ The fuel tank Works ! Video Below \/ \/



Theses Photos are without the orange hoses, ill post them up when i find some nice scenery :)



Oh and i got an Akrapovic





Bought the ktm user setting tool, ( EFI programmer)

Got ktm to load the sx-f base map, then i loaded the sx-f agressive map onto it.
Done a bit of playing around for the akrapovic, im getting about 160km on 7L which is good :D

But unfortunley the bike rumbles and pops, no backfiring and idea how i could get it to?

Whats Next for the bike.... Well the 350 has the same motor as the sx, just lower comp piston and 6 speed gearbox.
So im going to change out the piston to a 14.0:1 piston and if there is a cheap gearbox on ebay maybe....

But i was looking at this page...


http://motocrossactionmag.com/Revie...-KTM-FACTORY-SERVICE-350SXF-TOPHALF-7826.aspx

From that page

"decking the cylinder to raise the compression from 13.5:1 to 14:1, retiming the stock cams (by moving the cam sprocket)"
"They brought the peak horsepower number down from 12,300 rpm to 10,200 rpm, while increasing horsepower at every step along the curve."

Ktm's factory mod makes peak power at 10200 rpm instead of 12300 rpm. So on my next valve change if i move the sprocket one tooth forward should i see the same effect and also do i move both intake and exhaust cams one tooth together on just the intake?
 

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Discussion Starter · #26 ·
I don't think they're retiming by moving the cams a complete tooth... advancing the cam timing is something they have been doing on the old RF4 450 motor. the cam sprockets are bolted to the cams, you can change the timing by undoing the bolts and moving the cam gears over ever so slightly but it requires the knowledge on how far you can go to have the desired positive effect and rather than making the valves contact the piston... the cam gears on the 350 are also bolted to the cams so they can be tuned the same way.

btw you sure the tank is sitting flush and it's not caught up on wires, the clutch/throttle cables or the frame/ tank supports? the allignement on the sxf and exc's should be identical so if something doesn't match up maybe the tank is not sitting down as far as it should.
As of the timing,I'll probs leave it and I'll probs bend the valves :anim_peep:

And as for the tank, after the hose upgrade it sat better, but I had a second look the spark plug lead was in the way. Now everything is flush :)
 

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Discussion Starter · #28 ·
Hi

Could you tell me where you found this small kick stand ? Could you give me the lenght i think
I Will cut my 500 exc of i cant find a smaller

Thanks
Hi, the stand I purchased is off the husaberg fs570, if you want to buy the stand you need to go to a husaberg deal and give them this part number 81203023044. Otherwise the stand is roughly 370mm long, end to end.
 

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Discussion Starter · #41 ·
After spending a lot of time considering all my options it looks like the 350exc is exactly what I want.
The only question I have is how many miles do you get between engine rebuilds. I know what they recommend in the service schedule but that is often on the conservative side.
Can anyone comment about engine durability?
Great work by the way.
nice job! This is an old thread so you may not still have the bike, but how did you handle the speedo setup? Did you just go with the incorrect ratio, or did you not connect the speedo cable?

I just bought an EXC 350 myself and want to set it up for supermoto track use, but I am not sure how to handle the speedometer and how it'll mount up to the hub with the smaller wheels.
The speedo is just a magnet at the bottom, if u buy a bigger caliper or a relocation bracket make sure it has the prevision for the speedo module at the bottom. The brake disk itself just drill a hole for the magnet to sit in
 

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Discussion Starter · #43 ·
YOUR BIKE LOOKS AWESOME. I just got a 2014 ktm 350 excf. doing some supermoto changes o it.Did you have any trouble adjusting your speedo when you changed tires? mine is just showing 0, then turning off.
You need to install a magnet on the brake disk. It's tiny and has a circlip that releases it
 

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Discussion Starter · #44 ·
After spending a lot of time considering all my options it looks like the 350exc is exactly what I want.
The only question I have is how many miles do you get between engine rebuilds. I know what they recommend in the service schedule but that is often on the conservative side.
Can anyone comment about engine durability?
Great work by the way.
Hello, mate my bike has just hit 11000km with out any bottom end work done. At 2000km I installed a wiesco 14.5:1 high comp piston only for Preformance reasons. That piston has done 8000kms no dramas. Rock solid bike, stay posted im rebuilding it soon !
 
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