Oil Mod Completed - Page 7 - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums

04cummins · 02-22-2011, 09:13 AM

I just bought an 07 so hopefully I won't have this problem, correct?

please hop off · 02-23-2011, 05:54 AM

i need post 15 more so i can put a link on here dang.... im trying put the link of the jet to see if it well work for this oil mod...

just type this in ebay search

GENUINE MIKUNI SMALL ROUND MAIN JET 87.5 N102.221 #87.5

let me know thanks

mopar1rules · 04-15-2011, 07:25 AM

Is there parts from a '07 and newer 450, that a guy could bolt on or modify an installation slightly, on a '04, to make the oiling better than stock?

Itr.#1446 · 05-27-2011, 12:55 PM

Does the 06 have this problem?

milzo · 05-27-2011, 03:23 PM

Quote:

Originally Posted by Itr.#1446

Does the 06 have this problem?

yep

lp7631010 · 07-18-2011, 11:53 PM

How is the jet installed/secured? why did you go with a jet and not just a hole?

I'd be afraid of the jet coming lose and causing all hell.

sabrecat · 07-19-2011, 12:56 PM

hey guys.

I have the oil update kit on sale on ebay for $170.00

You get the new hi flow oil pump and the yamaha nozzle that works better than the jet or hole. This is Yamaha's fix for the problem and my kit will make your case and oiling system the exact same as the new 450's. this kit is for ALL 04-06's

You can also just call to order

www.jtatv.com

1-810-545-0066

Todd

kenard660r · 10-15-2011, 10:25 AM

I ran across this thread a while back when i was rebuilding my engine . so i gave it a shot took about 30 min of precise measuring and it was done, turned out great. thanks for the right up!!!!

but i know there were questions about the athena bb kit being in the way. i have pics that i would like to get posted of it. but the athena actually has more room than the stock because there is a bigger moon shape at the bottom of the cylinder.

if you have a hard time finding the angle of the jet to spray(3 axis tilt) just hold the drill bit on the spot were it will be drilled, then move the crank up and down real slow, find the angle at which the bit is pointing at the piston pin the most.

rusticrider · 01-19-2012, 02:06 AM

I sent my case to j&t products, bout 200$. Im fairly new to riding and wad my first time digging into the engine. When i put the case back on, am I supposed to use thread locker or??? Tightened down the bolts but felt like they would strip out really easy.

rusticrider · 01-19-2012, 02:08 AM

I sent my case to j&t products, bout 200$. Im fairly new to riding and was my first time digging into the engine. When i put the case back on, am I supposed to use thread locker or??? Tightened down the bolts but felt like they would strip out really easy.

Richie_supercharged · 04-02-2012, 10:00 AM

Does the 08 have the oil prob

Brownie · 04-02-2012, 10:10 AM

Quote:

Originally Posted by Richie_supercharged

Does the 08 have the oil prob

No, from 07 and up Yamaha finally took care of the problem

ParaDiceBoyZ · 06-06-2012, 07:43 PM

Quote:

Originally Posted by mopar1rules

Is there parts from a '07 and newer 450, that a guy could bolt on or modify an installation slightly, on a '04, to make the oiling better than stock?

Ive got the same question, just cracked the case on my '05 from chain breaking. Can i just buy '07 cases and oil pump to resolve the oil mod problem?
Please let me know as I need to order cases soon.
Thanks in advance

sabrecat · 06-06-2012, 11:38 PM

Quote:

Originally Posted by ParaDiceBoyZ

Ive got the same question, just cracked the case on my '05 from chain breaking. Can i just buy '07 cases and oil pump to resolve the oil mod problem?
Please let me know as I need to order cases soon.
Thanks in advance

On my oil update kit the only case need to machined is the clutch cover case on the right side of motor. On the mod fix you can drill the center cases and the clutch cover case. I have never done one like this and would not now that Yamha has put a better fix out there for this problem.

J&T

Todd

exwoodsracer416 · 06-13-2012, 08:56 PM

if i have an 06 and 08 motor what parts do i have to take off of the 08 to make this work?

yfzxsocal · 06-13-2012, 11:26 PM

You would need the right side case cover with the oil nozzle as well as the oil pump from the 08 motor. This way you will have the factory upgrade rather than the "mod"

yfz450_king · 03-19-2013, 09:52 PM

[QUOTE=gtilley45;360989]I sent mine to Kenz Cycle Tech to have it done. It was worth the $65 to me to let them do it so I wouldn't have to worry about screwing it up. Also, they didn't install a jet in mine, it's just got a hole.

I know this sounds stupid but if it just has a hole how does it spray the oil where it needs to be. I still have to do and it and was just wondering.

iqraceworks · 03-20-2013, 01:03 PM

[QUOTE=yfz450_king;1081529]

Quote:

Originally Posted by gtilley45

I sent mine to Kenz Cycle Tech to have it done. It was worth the $65 to me to let them do it so I wouldn't have to worry about screwing it up. Also, they didn't install a jet in mine, it's just got a hole.

I know this sounds stupid but if it just has a hole how does it spray the oil where it needs to be. I still have to do and it and was just wondering.

It's more than "just a hole". It's actually a small hole drilled into the casting that acts as a jet to spray high pressure oil from the oiling system onto the underside of the piston. When you drill the hole, it needs to be at the right angle in order to spray the oil in the right location.

LIGHTNINGMIKE · 04-28-2013, 09:11 AM

How did it work

02-22-2011, 09:13 AM	#121 (permalink)
04cummins Member Join Date: Feb 2011 Location: Missouri Posts: 42	I just bought an 07 so hopefully I won't have this problem, correct? __________________ 2007 YFZ 450 Special Edition, Black & Red Flames, FMF Factory 4.1 Full Exhaust, Pro Design K&N Air Intake, Boyesen QuickShot 2, GYTR Nerf Bars, Zip Tie Mod

05-27-2011, 12:55 PM	#124 (permalink)
Itr.#1446 Member Join Date: Apr 2011 Location: Sussex nj Posts: 32	Does the 06 have this problem? __________________ 06 yfz450 intake lrd full exhaust and cam mod

10-15-2011, 10:25 AM	#128 (permalink)
kenard660r Senior Member Join Date: Dec 2010 Posts: 136	I ran across this thread a while back when i was rebuilding my engine . so i gave it a shot took about 30 min of precise measuring and it was done, turned out great. thanks for the right up!!!! but i know there were questions about the athena bb kit being in the way. i have pics that i would like to get posted of it. but the athena actually has more room than the stock because there is a bigger moon shape at the bottom of the cylinder. if you have a hard time finding the angle of the jet to spray(3 axis tilt) just hold the drill bit on the spot were it will be drilled, then move the crank up and down real slow, find the angle at which the bit is pointing at the piston pin the most. Attached Thumbnails

01-19-2012, 02:06 AM	#129 (permalink)
rusticrider Junior Member Join Date: Jan 2012 Posts: 2	oil mod I sent my case to j&t products, bout 200$. Im fairly new to riding and wad my first time digging into the engine. When i put the case back on, am I supposed to use thread locker or??? Tightened down the bolts but felt like they would strip out really easy.

01-19-2012, 02:08 AM	#130 (permalink)
rusticrider Junior Member Join Date: Jan 2012 Posts: 2	oil mod I sent my case to j&t products, bout 200$. Im fairly new to riding and was my first time digging into the engine. When i put the case back on, am I supposed to use thread locker or??? Tightened down the bolts but felt like they would strip out really easy.

02-23-2011, 05:54 AM	#122 (permalink)
please hop off Member Join Date: Dec 2009 Posts: 38	i need post 15 more so i can put a link on here dang.... im trying put the link of the jet to see if it well work for this oil mod... just type this in ebay search GENUINE MIKUNI SMALL ROUND MAIN JET 87.5 N102.221 #87.5 let me know thanks

04-15-2011, 07:25 AM	#123 (permalink)
mopar1rules Senior Member Join Date: Apr 2011 Posts: 100	Is there parts from a '07 and newer 450, that a guy could bolt on or modify an installation slightly, on a '04, to make the oiling better than stock?

07-18-2011, 11:53 PM	#126 (permalink)
lp7631010 Banned Join Date: Jun 2011 Posts: 1	How is the jet installed/secured? why did you go with a jet and not just a hole? I'd be afraid of the jet coming lose and causing all hell.

07-19-2011, 12:56 PM	#127 (permalink)
sabrecat Senior Member Join Date: Aug 2007 Posts: 376	hey guys. I have the oil update kit on sale on ebay for $170.00 You get the new hi flow oil pump and the yamaha nozzle that works better than the jet or hole. This is Yamaha's fix for the problem and my kit will make your case and oiling system the exact same as the new 450's. this kit is for ALL 04-06's You can also just call to order www.jtatv.com 1-810-545-0066 Todd

04-02-2012, 10:00 AM	#131 (permalink)
Richie_supercharged Member Join Date: Dec 2011 Location: Sydney, Australia Posts: 91	Does the 08 have the oil prob __________________ 08 YFZ 450 se 04 WR 450f 84 ATC 250r (290 kit) 82 ATC 250r

06-13-2012, 08:56 PM	#135 (permalink)
exwoodsracer416 Junior Member Join Date: Dec 2011 Posts: 14	if i have an 06 and 08 motor what parts do i have to take off of the 08 to make this work?

06-13-2012, 11:26 PM	#136 (permalink)
yfzxsocal Senior Member Join Date: May 2010 Location: SoCaL Posts: 229	You would need the right side case cover with the oil nozzle as well as the oil pump from the 08 motor. This way you will have the factory upgrade rather than the "mod" __________________ 06 YFZ 450 SE...Venom 12.25:1 Piston, Ported Head, Sredrum 42mm Carb, FCI, Cam Mod, Alba Pipe, 07 Oil Upgrade, YZ Clutch, CV4 Hoses Laeger +2 Standard Travel A-arms, Fox Evol Floats, Fox Podium, Houser Linkage, Alba +4 Axle,CCP Stabilizer, Alba Nerfs, Lonestar +2 Stem, Pro Taper Bars, DWT Wheels

03-19-2013, 09:52 PM	#137 (permalink)
yfz450_king Senior Member Join Date: Mar 2013 Location: Adrian, MI Posts: 120	[QUOTE=gtilley45;360989]I sent mine to Kenz Cycle Tech to have it done. It was worth the $65 to me to let them do it so I wouldn't have to worry about screwing it up. Also, they didn't install a jet in mine, it's just got a hole. I know this sounds stupid but if it just has a hole how does it spray the oil where it needs to be. I still have to do and it and was just wondering.

04-28-2013, 09:11 AM	#139 (permalink)
LIGHTNINGMIKE Member Join Date: Mar 2012 Posts: 34	How did it work

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