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Open enduro carby jetting
(Preview)
Hey guys. I am taking the snorkel off my bike as I don't do deep water runs. I have also a barret aftermarket exhaust coming, so would a 52.5 pilot and 140 small round main be sweet for an uncorked and derestricted TTR?? I got this off a thumpertalk sticky, which is a sticky off the ttr250.com page. It sou...
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threshold
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11
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734
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tuning on elevation
(Preview)
hello there ttr riders i need help on tuning my bike i live at 750m above sea level and need help on making my bike get the best power
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DANKWHEELIE420
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0
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263
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Carb slide sticking
(Preview)
My carb slide sticks up when you let the throttle out slowly my carb was out yesterday and I tightened the retention screws and it worked for a lil but it's back how it was
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Slick Nick
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6
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515
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Carb hose routing
(Preview)
Just purchased a 2004. Prev owner said bike has sat since 8/16. The bike will not start. After looking at the carb, one of the hoses is not connected. The hose on the left hand side is connected and the drain hose is also. However on the right side of the carbs hose is no where to be found. Any chance that is my...
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jball78
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11
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755
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Jaguar Pro TTR 250 Carb?
(Preview)
Has anyone tried this carb as an alternative to rebuilding a broken float post etc? just curious as the price is sill low and it appears to be quite compact with an accelerator pump and choke setup. just curious! https://www.amazon.com/Cable-Carbrettor-Accelerating-Yamaha-TTR250/dp/B06X...
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FBRConcepts
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4
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492
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Carb Jets for mods on 2005 TTR 250
(Preview)
Hey Guys, I spent a few hours sifting through stickies and threads looking for information on jetting the carb on my fathers new bike for some mods we are getting ready to install. I am hoping to order some jet sizes that will get us dialed in before hand. Bike: 2005 TTR 250 US Model Elevation: Sea Leve...
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FBRConcepts
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0
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345
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I love this website! - float post pin removal
(Preview)
Posting this here so others might see it, it you need to remove the float from your carby read the post below. Worked so easily for me and I'd been dreading the thought of ever needing to do it. Pin popped out in a few seconds and the same to put it back in. http://ttr250.activeboard.com/t61485128/re...
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leigh
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0
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247
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Has anyone removed an air box and just used a uni-filter / slip on foam filter direct to the carby?
(Preview)
Hi there, Has anyone removed there airbox and replaced there air filter with a foam air filter / Uni-Filter that goes staright on to the carby and what advantages/ disadvantages did it have ? I removed my original filter set up on a small engine Honda CRF and fitted a foam one and it made such a differenc...
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James from Oz
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4
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536
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1/3 - WOT Issue
(Preview)
Hi Im having a bit of a mare getting my '06 blue OE dialled in right, I've scoured these pages plus some others but can't seem to find the answers so I'm reaching out... The bike is running stock exhaust and un-modded air box with stock filter. It came to me with 50 pilot and 147 main which I believe is stan...
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Gauguin
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8
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482
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Carb troubles
(Preview)
hi just finished putting the carb back on my ttr 250 open enduro had a few problems before hand with what seemed to just be blocking up, so I've pulled the bowl off and given a good clean with carb cleaner and now it's back on it wants to idle really high on choke and then run for a little bit when the chokes pus...
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Pat
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2
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325
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Carb problems
(Preview)
I recently purchased an 02 ttr250 that had been sitting for a couple years. It had an fmf exhaust and top of airbox cut up, but factory jets in carb. I replaced the exhaust and airbox with factory items then cleaned the carb. Had to replace all orings, accelerator pump diaphragm, needle and seat. The mix...
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haney4147
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4
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407
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No carb on TTR I bought! Please any advice or tip will be greatly appreciated!
(Preview)
Hey guys i bought a ttr250 :) But it didnt have a carb on it :*( Ive read a bit amd shopped around the oem carb is to rich for me.. so ive turned to the tm33 mikuni. Is there a certain set of cables i should buy along with it? Anyone please help! Thank you!
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Jonduggar
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6
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537
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Fuel injection kits - I wonder how well these work...?
(Preview)
motor bike fuel injection kits.... https://www.aliexpress.com/item/microsquirt-II-based-EFI-motorcycle-Motorbike-Motocross-ATV-scooter-small-engine-Electronic-Fuel-Injection-kit/32786077851.html?spm=2114.01010208.3.2.8hQ9ft&ws_ab_test=searchweb0_0,sea...
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petenz
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3
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535
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s/hand carb
(Preview)
i am going through my bike bits and have come across a spare ttr carb,good visual condition but not to sure about gaskets/diaphragm,no broken parts,everything moves freely etc, i got ages ago with a complete go-cart motor and forgot all about it,i have no use for it anymore.is it worth buying/fittin...
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admbnm
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4
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382
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Auto fuel taps
(Preview)
Ok I know alot of people don't like them, but what's the consensus on here? There was one fitted to my Super Sherpa and I liked it. Prime for 5 seconds, a little choke, turn the key, running engine... Turn engine off... Walk away with no worries. I'm also used to FI bikes and this fuel tap on the TTR has me co...
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mr_diver
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8
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440
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VM36? Skyteam Ace 125 with 315cc TTR engine conversion!
(Preview)
Hello all and Happy New Year, I'm fitting a TT-250R engine into another chassis . engine upgrade 325cc kit and Web camshafts. I have purchased a TM38 Carb/pump which was set up for an XR400 but the carb is physically very big and I'll have clearance problems. My question is do you think a VM36 carb would b...
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DonP
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14
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2142
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Choke problem.
(Preview)
Hello everyone! Question! I've got a 2000 ttr250 blue tank model. The problem I'm having is with the choke. When I initially start the bike, I pull the choke knob outward and start the bike. As soon as the bike is running, I push the knob in half way and let the bike warm up. Naturally the RPM is elevated...
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Tarbone
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3
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260
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Only running ethanol free from now on
(Preview)
I finally found out why my pet**** only ran on reserve and how my carb got so gunked up thankfully I decided to change my pet**** before I put the newly clean carb on and saw the image below. cleaned the tank, put a new pet**** on, charged the battery Finally after close to a month from my initial post abou...
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Dr_B
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3
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439
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What is the port on the lower right side of the bowl for?
(Preview)
I have a leak from the port at the right bottom of the bowl. Anyone know what this port is for? Is it supposed to the covered/blocked or something? I just did a full rebuild on the carb and most of the gaskets/rings/diaphragm/etc are new. According to receipts from the previous owner a dealer replaced th...
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Sprok
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14
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1012
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New Carb
(Preview)
Put a Koso 32mm on runs and idles good but bogs out completely from 0-25 % Throttle. I don't know what to do.
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Trask
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5
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519
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Carb Replacements!
(Preview)
Wondering if anyone has some experience on replacing the stock Carb in a 2005. Someone broke the inside wall of the Carb probably dropped it and tried repairing it, with ghetto procedures. Now it has a bad bog mid throttle. Just looking for good replacements instead of buying another stock one for $40...
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Trask
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6
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842
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carby pilot jet help please
(Preview)
Hello I have just got myself a 52.5 Mikuni pilot jet and I have noticed the pilot jet is a lot longer than the original jet I was wondering if anyone would recommend taking the white fuel splash shield that goes around the main jet off. To me it looks like it may affect the flow to the pilot jet and if i wa...
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marcusp
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2
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398
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Fast Idle Speed Adjustment (ie Choke)
(Preview)
Hi all, I have the white tank TTR250 Open Enduro, I believe 1994ish. Since I've bought it, it has an annoyingly fast idle speed with the choke on. I have the manual but I cannot see a section which describes how to adjust it. Any help would be appreciated! For reference: I tried turning it in, but it doesn'...
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stewy2603
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3
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327
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The effect of storing a tank with fuel in
(Preview)
I had put a spare tank on my 325 to use whilst I put a new set of decals on the original. The tank had a new fuel tap on so I didn't bother to take it out for inspection. I actually got around to stickering up the original tank today so decided to drain the spare tank of fuel before taking it off. It seemed odd that...
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TTRfan
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9
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747
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Jetting help with 1996 Raid
(Preview)
I have been playing with jets on my 1996 Raid lately. My bike has the snorkel out, no restrictor. Before it ran fine, but the first 1/4 was weak so I changed the #50 pilot to a 52.5. The new power was instantly noticeable. However, beyond about 1/4 -1/3 it weakens for a bit, then picks up again. Every singl...
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TTRVN
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0
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355
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Keihin fcr 33 ...any body use one?
(Preview)
Hi there. Just recently got myself a ttr and it rums a fcr33. I have just took it off to clean it out as it overflows if the engine is switched off and fuel is on. Does anyone else have experience of these carbs? If so what jets do you use and have you any advice?
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Shed71
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3
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771
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Some observations on jetting
(Preview)
Been fiddling around with the jetting on my 325 recently as I've got the loan of an Air/fuel ratio meter and header pipe with lambda sensor boss. (Oh, and I've got no wife/kids/life ) The 325 runs nicely on 50 pilot/147main jets, needle clip 1 notch above middle. Motad exhaust, Twinair filter and mild...
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mossproof
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7
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491
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wont idle without some choke
(Preview)
I was given an 04 TTR by a good friend. It hasn't run for a few years. I started it a few weeks ago and it kept cutting out. Because of the long lay off I suspected carb issues. I have removed, stripped and cleaned the carb but used no new o rings etc. I'm pretty sure somebody with a heavy wrist has had a go at the c...
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Paul C
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23
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2818
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Anybody Know of Aftermarket Jetting
(Preview)
I want to go up jet sizes on my 1999 ttr250. Wanting to know of any good jet brands and what size to use for the teikei y30p carb. Any help is appreciated thanks. I am planning on getting an fmf powercore 4 And a k&n air filter also -- Edited by TTR250RIDER on Monday 30th of May 2016 05:30:19 AM
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TTR250RIDER
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2
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428
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Misfire cruising at 1/2 throttle and higher
(Preview)
Have this problem on my 2001 model. Bike not run for 6weeks. After 1/2 hr to the first trail uphill then on tarmac for about a mile then all of a sudden miss-fire cruising about 1/2 throttle. Instant thought fuel, so switched to reserve:- Symptom remains? Bike has been running perfect since new. Fitted...
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Alf c h
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9
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1142
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