FCR emulsion tubes

31509 Views 53 Replies 26 Participants Last post by Boblai, May 24, 2022

kiwi-craig

Discussion Starter · Dec 30, 2012

2

One of the critisims of the FCR carb is the emulsion tube (what the needele slides up and down in and the main jet bolts on the bottom of) also referred to as the "needle jet"

Ideally 4 strokes need a drilled emulsion which atomises the fuel as it's pulled up the tube, hence the name "emulsion"

http://www.factorypro.com/products/Factory_Pro_HDJ_emu_hi_disp.html

If you look in the guts of Weber or dellorto carbs used in off road racing automotive engines years ago they used drilled emulsion tubes and you could get a wide selection of drill pattern as to fine tune the fuel delivery.

anyways Travis at Thumper can supply these very nicely made drilled emulsion tubes or needle jets. Significantly improved throttle response due to the better fuel atomisation compared to the stocker. installation details to follow

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KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

KTM 554 XC: sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

gotta stop spending $$$ on these KTM's...…..

Polaris Outlaw 525 IRS - 2011, lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
gotta have something to modify this year !

LTR 450, My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

NZ # 1 Vets champ 2013
NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
NZ TT champ Vets (40+) 06, 08, 09,12 & 13
Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

Reactions: 1

1 - 20 of 54 Posts

caflash

· #2 · Dec 30, 2012

Factory pro sells direct. I purchased six a year ago. Also the dual squirt a/p from vertex. Very close to FI with both. Add a R&D float bowl with an externally adjustable leak jet and you have invested a lot of money.DocBob

flooringit

· #3 · Dec 30, 2012

I think Ktmbill is selling something in this line of thought also. Can't recall.

kiwi-craig

Discussion Starter · #4 · Dec 30, 2012

i could never get factorypro to return an email, gave up on them............. Travis is the only guy I could find who actually stocks them

KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

KTM 554 XC: sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

gotta stop spending $$$ on these KTM's...…..

Polaris Outlaw 525 IRS - 2011, lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
gotta have something to modify this year !

LTR 450, My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

NZ # 1 Vets champ 2013
NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
NZ TT champ Vets (40+) 06, 08, 09,12 & 13
Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

sticko2

· #5 · Dec 30, 2012

Would there be any reason why we couldn't drill out our own emulsion tubes. Or is there more to it than 4 small holes? Has anyone got any idea on drill size looks similar to a #100 metering jet to me - so 1mm

caflash

· #6 · Dec 30, 2012

A dozen? Tiny holes. Tiny. Cnc stuff

kiwi-craig

Discussion Starter · #7 · Dec 30, 2012

and the oring at the top to seal the tube into the carb body forcing the air through the drillings to atomise the fuel..............

KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

KTM 554 XC: sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

gotta stop spending $$$ on these KTM's...…..

Polaris Outlaw 525 IRS - 2011, lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
gotta have something to modify this year !

LTR 450, My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

NZ # 1 Vets champ 2013
NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
NZ TT champ Vets (40+) 06, 08, 09,12 & 13
Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

ktmbill

· #8 · Dec 31, 2012

I sell them too

airmobile101

· #9 · Dec 31, 2012

ktmbill said:
I sell them too

How much???? PM me info please

Reactions: 1

eagertorace

· #10 · Dec 31, 2012

Walt, you do this?

ktmbill

· #11 · Dec 31, 2012

They are $36.00 shipped

426power

· #12 · Dec 31, 2012 (Edited)

KTM Bill does this effect the jetting? Or is it just a cleaner burn, as I am thinking about ordering one from you.

ktmbill

· #13 · Dec 31, 2012

No jetting change I have more coming in by the end of the week Just sold the last one the holidays is mess me up

eagertorace

· #14 · Dec 31, 2012

Are these suppose to give better throttle response or what?

eagertorace

· #15 · Dec 31, 2012

Never mind I went back and read all of the thread lol

426power

· #16 · Dec 31, 2012

KTM Bill I want one let me know how to make payment to you.

ktmbill

· #17 · Dec 31, 2012

pay pal is [email protected]

426power

· #18 · Feb 3, 2013

I just wanted to tell you how smooth this purchase was with KTMBill. Super communication and just great to deal with. Thanks Bill

jr1975atv

· #19 · Feb 3, 2013

Post up results when you guys get them installed

426power

· #20 · Feb 4, 2013

I will. I am putting the motor back together Sunday and will let you know after that.

1 - 20 of 54 Posts

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