Fcr Carb Mods - Page 6

tazz3069 · 01-21-2011, 07:52 PM

Thank You Very Much. I was dry fitting the 400EX intake tube today and it seemed not to fit properly. It looks a little big.

cataway · 01-21-2011, 08:10 PM

ya to the fcr you can cut the 1st ring off

cataway · 01-21-2011, 08:16 PM

like this

tazz3069 · 01-21-2011, 08:20 PM

Thanks for your help

tjenus · 02-10-2011, 05:06 PM

i have a 39 fcr off my old 2005 yz450f, what year 400ex boot do you use or they all the same, i have one i could get off a 2001. thanks Tjenus. also i might ohm the tps on the stock z at idle and at wot, and do the same with the fcr, if there the same shouldnt be know reason you couldnt hook it back up, unless i missed something, thanks Tjenus

yfzracer45 · 10-01-2011, 01:48 PM

Old thread but THIS is what ive been looking for FOREVER!!

I own a yfz and was searching google with no ideas you guys used yfz carbs on these ltz's. I have a few ?'s regarding this mod and this seems like the place to be.

The cable adjust idle are you guys using this from your ltz carbs or buying this assembly from the yzf dirtbikes? Any idea how much those parts cost of if anyone has a parts carb on here with that piece im interested.

thanks.

cataway · 10-01-2011, 09:23 PM

Quote:

Originally Posted by yfzracer45

Old thread but THIS is what ive been looking for FOREVER!!

I own a yfz and was searching google with no ideas you guys used yfz carbs on these ltz's. I have a few ?'s regarding this mod and this seems like the place to be.

The cable adjust idle are you guys using this from your ltz carbs or buying this assembly from the yzf dirtbikes? Any idea how much those parts cost of if anyone has a parts carb on here with that piece im interested.

thanks.

you can buy that part but its way better to just get a used ltz carb

yfzracer45 · 10-02-2011, 02:59 PM

How hard is it to split the carb like you done to drill the hole,and was the drill bit 3/16? Also you was saying the BSR spring wouldnt work would you direct me to a spring or would the YZF bike ones work?

cataway · 10-02-2011, 05:45 PM

Quote:

Originally Posted by yfzracer45

How hard is it to split the carb like you done to drill the hole,and was the drill bit 3/16? Also you was saying the BSR spring wouldnt work would you direct me to a spring or would the YZF bike ones work?

the hole size is dictated by what the tap needs. i do recommend using the right size tap .

the spring may of just one that i had laying around or i may of gotten it from a hardware. sorry i really dont remember.

do be careful at splitting the carb if you damage the gasket its hard to get.... ya it can be done but its expensive.

belive it or not the hole can be drilled from the top down then just plug the extra hole

yfzracer45 · 10-02-2011, 09:49 PM

Quote:

Originally Posted by cataway

the hole size is dictated by what the tap needs. i do recommend using the right size tap .

the spring may of just one that i had laying around or i may of gotten it from a hardware. sorry i really dont remember.

do be careful at splitting the carb if you damage the gasket its hard to get.... ya it can be done but its expensive.

belive it or not the hole can be drilled from the top down then just plug the extra hole

extra hole? ive got everything completed except the idle assembly i started drilling with 3/16 assuming thats the correct size for the m5x.5 tap as you used correct? i cant finish drilling because of the bit being too short. hope its not wrong

ZUKI400 · 10-02-2011, 10:03 PM

M5 X 0.5 is correct tap size, drill size is 4.5mm

01-21-2011, 08:10 PM	#77 (permalink)
cataway :::Official Spammer::: Join Date: Mar 2006 Posts: 3,036	ya to the fcr you can cut the 1st ring off __________________ 03 ltz400,95.5bore,+5crank,P&P,13.7:1,JE piston,spacer plate,RHC +1 intakes valves,RHC #208in&187ex cams,DRZ manual decomp,DID cam chain,no air box,Sredrum TB 42mm FCR,RAT stack,WB fuel screw,EMN needle,quick shot,06 clutch 450r drive plates w/trx400 ex springs,C2HB,ex thumber,trx450r air boot, Barker Performance pipe, trailteck flywheel,dynatek,nerf bars,450r shocks, nerf bars,+4 swinger,lowered front & rear

01-21-2011, 08:16 PM	#78 (permalink)
cataway :::Official Spammer::: Join Date: Mar 2006 Posts: 3,036	like this __________________ 03 ltz400,95.5bore,+5crank,P&P,13.7:1,JE piston,spacer plate,RHC +1 intakes valves,RHC #208in&187ex cams,DRZ manual decomp,DID cam chain,no air box,Sredrum TB 42mm FCR,RAT stack,WB fuel screw,EMN needle,quick shot,06 clutch 450r drive plates w/trx400 ex springs,C2HB,ex thumber,trx450r air boot, Barker Performance pipe, trailteck flywheel,dynatek,nerf bars,450r shocks, nerf bars,+4 swinger,lowered front & rear

10-02-2011, 10:03 PM	#86 (permalink)
ZUKI400 :::Z-250 Rider::: Join Date: Nov 2009 Location: Oceanside,CA Posts: 529	M5 X 0.5 is correct tap size, drill size is 4.5mm __________________ 04 LTZ +4 Hot Rods Stoker Crank 434 Cylinder Works Big Bore Kit FCR 39 165M, 45P, 35L, 2 turns Alba Full Pipe Fuel Customs Intake, Open modded air box Barnett Dirt Digger Clutch RAZR 2 Front and Rear ELKA's Stage 3 With Res. Front And Rear +2 A Arms, Durablue Exstended Rear Axle Pro Armor Full Nerf's Pro Armor Full body and arms PRM rear skid Motion Pro Twist GPR Stabilizer Pro Taper Fat Bars Contour ASV levers FX Factory Effex gripper seat

01-21-2011, 07:52 PM	#76 (permalink)
tazz3069 :::Mini LT50 Rider::: Join Date: Aug 2010 Location: Las Vegas, Nevada Posts: 58	Thank You Very Much. I was dry fitting the 400EX intake tube today and it seemed not to fit properly. It looks a little big.

01-21-2011, 08:20 PM	#79 (permalink)
tazz3069 :::Mini LT50 Rider::: Join Date: Aug 2010 Location: Las Vegas, Nevada Posts: 58	Thanks for your help

02-10-2011, 05:06 PM	#80 (permalink)
tjenus :::Rookie Rider::: Join Date: Jan 2011 Posts: 29	i have a 39 fcr off my old 2005 yz450f, what year 400ex boot do you use or they all the same, i have one i could get off a 2001. thanks Tjenus. also i might ohm the tps on the stock z at idle and at wot, and do the same with the fcr, if there the same shouldnt be know reason you couldnt hook it back up, unless i missed something, thanks Tjenus

10-01-2011, 01:48 PM	#81 (permalink)
yfzracer45 :::Rookie Rider::: Join Date: Oct 2011 Posts: 4	Old thread but THIS is what ive been looking for FOREVER!! I own a yfz and was searching google with no ideas you guys used yfz carbs on these ltz's. I have a few ?'s regarding this mod and this seems like the place to be. The cable adjust idle are you guys using this from your ltz carbs or buying this assembly from the yzf dirtbikes? Any idea how much those parts cost of if anyone has a parts carb on here with that piece im interested. thanks.

10-02-2011, 02:59 PM	#83 (permalink)
yfzracer45 :::Rookie Rider::: Join Date: Oct 2011 Posts: 4	How hard is it to split the carb like you done to drill the hole,and was the drill bit 3/16? Also you was saying the BSR spring wouldnt work would you direct me to a spring or would the YZF bike ones work?

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