Horizons Unlimited - The HUBB

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-   -   XT600E with MIKUNI single carb doable! (https://www.horizonsunlimited.com/hubb/yamaha-tech/xt600e-mikuni-single-carb-doable-45252)

Pigford 18 Sep 2009 21:10

Just whack a bit of loctite or silicon on it.... shouldn't get too hot !

bacardi23 19 Sep 2009 01:41

3 Attachment(s)
I will put some haraldite or loctite to cover the screw on top of the cap...
I must add that it looks pretty nice... looks like it was "welded" in lol


Vando :D

Pigford 19 Sep 2009 09:17

Job done lad !

bacardi23 23 Sep 2009 18:28

Hi there... new updates:
  1. awaiting the conic air filter (hope it arrives this week) Motorcycle K&N Style 60 mm Chrome Cone Power Air Filter:eBay Motors (item 250494158034 end time Oct-06-09 01:16:49 PDT)
  2. Buy one of these to replace that funny tube I bought to fit as carb-to-airbo inlet: 60mm 2 3/8" Silver 2 Py High Temp Air Feed Ducting 1M on eBay (end time 05-Oct-09 10:16:48 BST)
  3. buy one of these so I can fit the air filter I bought nice and easy: 60mm 2 3/8" Aluminium Alloy Beaded Hose Joiner Silicone on eBay (end time 06-Oct-09 15:29:21 BST)
these last 2 items are about 40€ worth...

Vando :innocent:

bacardi23 4 Oct 2009 19:28

Bought those two items... air filter hasn't arrived yet...


Vando :smartass:

bacardi23 10 Nov 2009 23:29

All parts have arrived... work is rainchecked till Christmas holidays as I'm back at college!


I'm considering on buying a grizzly 600 carburetor kit(needles and the weird not O-RING) it's about 30USD delivered so.. why not!? ;)


Vando:smartass:

Svaneberg 18 Mar 2013 11:45

Hi Vando

New here and VERY curious about your thoughts and transformations on the single carb on XT 600, as I'm about to do it on my own 1993 XT600. I got the manifold and a Keihin FCR 39 carbie. I'm determined on doing this just for the challenge. What vas your experience with the damper and behavior?

Best Regards

Jakob

bacardi23 8 Apr 2013 14:00

Hi Jakob... Been away from the HUBB for a while now.

In order for you to get this to work you will have to change the rear shock mount position so you can SAFELY accomodate the rear shock and avoid it hitting the carburetor!

You might know already that you will need to either modify or remove the stock airbox in order to work with the single carburetor.

I've got a brand new 2-into-1 carburetor intake that you will need to make the exchange. If you want it, send me a PM!

On the pictures I showed, I actually effectively repaired the carburetor cap with JB-weld! I also used JB-weld to repair both my engine casings and it has been holding for over 3k km without any leaks or cracks whatsoever.


Vando beer

Svaneberg 17 Jul 2014 21:46

4 Attachment(s)
Hi Vando

Long Time and old thread. Just want to Say That I finally succeded and my XT is now equpped with a FCR 39 carb. This is in general what I did:

- removed old carb setup and airbox
- grinded out part of the frame as you did on your picture.
- relocated the rear shockmount approx. 6 cm back.
-altered the lower shockmount/linkarm to accomodate a ktm lc4 rear shock.
- fabricated a 2 in 1 manifold for the carb which is 4 cm shorter than the grizzly. Otherwise the carb would hit the starter.

Bottomline - the shit is working perfectly. Suspension is working and so is the fcr.

Pics:
Attachment 13398
Attachment 13399
Attachment 13400
Attachment 13401

Best Regards

Jakob


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Zergman 18 Jul 2014 06:02

So much want right now... Damn you, wallet!

But my question would be: isn't Keihin FCR 35 dual carb setup (like the ones "Performance for raptor 660") better or the same like 39 single?
I don't know if they would fit an XT or not, but I think they should.

xtrock 18 Jul 2014 07:28

Cutting frame and changing place for shock? No this is to much, if bike is that bad in the beginning i recomend buying a KTM 75Hp, you will never get enough hp from the XT...

xtrock 18 Jul 2014 10:25

Quote:

Originally Posted by Mezo (Post 473498)
Ever seen a 25+ year old 75HP KTM? ?c?

Mezo.

Why you need it to be 25+ years old? The price here on the models around 2000 is so low that you can compare with old XT.

Svaneberg 18 Jul 2014 14:47

Actually it was just to Challenge myself as og it could be done. The lower rpm torgue has definately improved, but i'm not sure I have gained any hp.
Also i'm not sure I Can Call it a Yamaha anymore so now i'm calling it YamaKTM. Reason is this:

- Carb (fcr39) from a ktm exc 450
- rear shock from a ktm lc4
- rear wheel from a ktm lc4
- front fork is a 48mm WP USD from a ktm lc4
- front wheel with 300mm disc and Brembo caliper also from ktm lc4.

Also for me I like the simplicity of one carb in terms tuning and adjusting :)


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nickargas 18 Jul 2014 14:58

I've just got a dellorto phm 38mm with the cables and the throttle just so I can convert mine too... I have ordered a grizzly manifold from eBay and I'm anxiously waiting for the part to come to Greece so I can do that too... I'm not gonna cut the frame though... I'm gonna put a high flow tube with a conic air filter that's gonna go around the rear suspension... will that work?

nickargas 18 Jul 2014 15:17

Quote:

Originally Posted by Svaneberg (Post 473525)
Actually it was just to Challenge myself as og it could be done. The lower rpm torgue has definately improved, but i'm not sure I have gained any hp.
Also i'm not sure I Can Call it a Yamaha anymore so now i'm calling it YamaKTM. Reason is this:

- Carb (fcr39) from a ktm exc 450
- rear shock from a ktm lc4
- rear wheel from a ktm lc4
- front fork is a 48mm WP USD from a ktm lc4
- front wheel with 300mm disc and Brembo caliper also from ktm lc4.

Also for me I like the simplicity of one carb in terms tuning and adjusting :)


Sent from my iPhone using Tapatalk

I think your manifold and the Carb is too small... will check it further(I think I did the same mistake) but it has to do with cccm (cubic cm per min) and the flow of the intake into the engine... will check the cccm from the guy who made me my handmade exhaust... he was at school with me and I remember he had a book with all that equations about flow etc


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