YFZ450 Cam mod - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums

jaredp · 08-10-2011, 03:13 PM

Here is our Cam mod instructions, Easy to read and follow PDF.

http://www.rossiereng.com/wp-content...g_yfz_cam1.pdf

-Jared

jaredp · 11-16-2011, 10:32 AM

Cam Mod explained.

sjseng · 11-16-2011, 11:32 AM

Thanks Jared!! I like detail and you provided it here with reinstall tourque specs and bolt sizes. Most others just say reinstall in reverse order. Admins, maybe a link can be added to YFZ Powertrain for easier find. Thanks.

jaredp · 11-16-2011, 04:44 PM

Id rather have it here in the Rossier Engineering section. There is a good write up in the power train section.

bennieben1 · 05-03-2012, 09:58 AM

thank you :)

sjseng · 06-02-2012, 05:25 PM

I completed the mod this week using your instructions. I will see how it performs on our trip coming up. It runs, so that is a good sign so far.

Question is, how do you check your valves from this point on?

TDC is no longer the same spot for the exhaust valve. I checked my valve before removing and they were spot on. I forgot to check before putting all back together. But do I still check at TDC or now go by the mark on the cam gear and line it up with the top of the head? Basicly, Is there a need to turn the crankshaft between checking the intake and exhaust valves?

Thanks.

jaredp · 06-04-2012, 09:45 AM

You check your valves the same way, as the clearance is measured between the heel of the cam and the bucket.

xmanridesred · 06-04-2012, 11:31 AM

I will be using this when I do the cam mod it looks great.

quadyfz · 11-14-2012, 05:21 PM

Seems that the pdf is down, anyone has a link to it?
Thanks

fast450ridr · 11-14-2012, 05:23 PM

http://www.rossiereng.com/wp-content...g_yfz_cam1.pdf

They're great instructions, but I would suggest not taking the tensioner out until you are at top dead center. Don't turn the engine at all until you have the tensioner back on. I took the tensioner out before turning it and the chain skipped teeth on the intake cam.

quadyfz · 11-14-2012, 06:04 PM

Quote:

Originally Posted by fast450ridr

http://www.rossiereng.com/wp-content...g_yfz_cam1.pdf

They're great instructions, but I would suggest not taking the tensioner out until you are at top dead center. Don't turn the engine at all until you have the tensioner back on. I took the tensioner out before turning it and the chain skipped teeth on the intake cam.

Great! thank you
Note taken

alexdeluna21 · 12-09-2012, 10:33 PM

is this a good mod to do on the 12 yfz 450R?

**ctown208** · 12-09-2012, 11:51 PM

Quote:

Originally Posted by alexdeluna21

is this a good mod to do on the 12 yfz 450R?

I didn't read the tread but on a fuel injected yfz there is no cam mod! Only cam swaps.. DONT SET THE TIMING IN THE MOD POSITION IT WILL CAUSE DAMAGE

alexdeluna21 · 12-10-2012, 12:19 AM

@Ctown- LOL thanks bro! My stupid ass would've tried to do it! I guess that's why i ask so many questions....

**ctown208** · 12-10-2012, 02:43 AM

Quote:

Originally Posted by alexdeluna21

@Ctown- LOL thanks bro! My stupid ass would've tried to do it! I guess that's why i ask so many questions....

Yeah your bike needs a cam swaps.. Ask away on your questions

constable · 12-10-2012, 03:55 AM

Ctown what cams do u recommend on an r/x... my motor is stock.. I have exhaust fci and msd

alexdeluna21 · 12-10-2012, 07:22 PM

x2 ^^^^

**ctown208** · 12-10-2012, 08:49 PM

Quote:

Originally Posted by constable

Ctown what cams do u recommend on an r/x... my motor is stock.. I have exhaust fci and msd

Pm mixer or even start a thread on his current opinion he seems to be a man of knowledge.. I liked the 06-09 carbed yfz cam in mine.. But that is old news now..

jaredp · 12-11-2012, 09:18 AM

Here are mixxer's thoughts on cams. Dunno if its current or if your referring to the "dirtbike" cam for more mid range as a few builds on here currently are trying out. This is the thread mixxer grabbed some of the specs from, also some good information there.

drew32 · 01-07-2013, 06:31 PM

So i started to do this mod, i got everything off including the cam cover but my exhaut cam has only 1 dot/hole in it and my intake has 2. and if i get the exhaust level with the head then the intake is not level with the head, either one of the dots .Why is this? Its an 07 yfz 450 special edition. Stock from what i know Bought it used from a dealer??

08-10-2011, 03:13 PM	#1 (permalink)
jaredp Senior Member Join Date: Jul 2011 Location: Wisconsin Posts: 272	YFZ450 Cam mod Here is our Cam mod instructions, Easy to read and follow PDF. http://www.rossiereng.com/wp-content...g_yfz_cam1.pdf -Jared Last edited by jaredp; 11-15-2012 at 09:09 AM. Reason: updated the link

11-16-2011, 10:32 AM	#2 (permalink)
jaredp Senior Member Join Date: Jul 2011 Location: Wisconsin Posts: 272	Cam Mod explained. __________________ Give us a call 715 341 9919 Last edited by jaredp; 11-15-2012 at 09:09 AM.

11-16-2011, 11:32 AM	#3 (permalink)
sjseng Junior Member Join Date: Nov 2011 Posts: 7	Thanks Jared!! I like detail and you provided it here with reinstall tourque specs and bolt sizes. Most others just say reinstall in reverse order. Admins, maybe a link can be added to YFZ Powertrain for easier find. Thanks. __________________ '07 YFZ450 SE LTE Duals, Intake kit, & K&N filter 190 main jet 50 pilot jet '06 Raptor 700 GYTR full exhaust & Filter PCIII Happy user of AmsOil Last edited by sjseng; 11-16-2011 at 11:35 AM.

11-16-2011, 04:44 PM	#4 (permalink)
jaredp Senior Member Join Date: Jul 2011 Location: Wisconsin Posts: 272	Id rather have it here in the Rossier Engineering section. There is a good write up in the power train section. __________________ Give us a call 715 341 9919

05-03-2012, 09:58 AM	#5 (permalink)
bennieben1 Junior Member Join Date: Dec 2009 Location: LAS VEGAS Posts: 9	thank you :) __________________ 05 YFZ450--------stock 03 BANSHEE------gsxr 750 hybrid, 06 RAPTOR 700---duals, pc5, intake 95 KX500 ---------procircuit pipe 87 BANSHEE------421, alcohol, lectrons 08 TRX450R------hmf slip-on, hotcam 2, intake

06-02-2012, 05:25 PM	#6 (permalink)
sjseng Junior Member Join Date: Nov 2011 Posts: 7	I completed the mod this week using your instructions. I will see how it performs on our trip coming up. It runs, so that is a good sign so far. Question is, how do you check your valves from this point on? TDC is no longer the same spot for the exhaust valve. I checked my valve before removing and they were spot on. I forgot to check before putting all back together. But do I still check at TDC or now go by the mark on the cam gear and line it up with the top of the head? Basicly, Is there a need to turn the crankshaft between checking the intake and exhaust valves? Thanks. __________________ '07 YFZ450 SE LTE Duals, Intake kit, & K&N filter 190 main jet 50 pilot jet '06 Raptor 700 GYTR full exhaust & Filter PCIII Happy user of AmsOil Last edited by sjseng; 06-02-2012 at 05:35 PM.

06-04-2012, 09:45 AM	#7 (permalink)
jaredp Senior Member Join Date: Jul 2011 Location: Wisconsin Posts: 272	You check your valves the same way, as the clearance is measured between the heel of the cam and the bucket. __________________ Give us a call 715 341 9919

06-04-2012, 11:31 AM	#8 (permalink)
xmanridesred Member Join Date: May 2012 Location: Binger, OK Posts: 42	I will be using this when I do the cam mod it looks great. __________________ 2008 YFZ 450 Grey/Red HMF slip-on, Houser +1 stem K&N, Hiper CF1 rears, AC Nerfs

11-14-2012, 05:21 PM	#9 (permalink)
quadyfz Member Join Date: Nov 2010 Posts: 64	Seems that the pdf is down, anyone has a link to it? Thanks

11-14-2012, 05:23 PM	#10 (permalink)
fast450ridr Senior Member Join Date: Oct 2011 Posts: 439	http://www.rossiereng.com/wp-content...g_yfz_cam1.pdf They're great instructions, but I would suggest not taking the tensioner out until you are at top dead center. Don't turn the engine at all until you have the tensioner back on. I took the tensioner out before turning it and the chain skipped teeth on the intake cam. __________________ 07 YFZ450 SE monster big core, FCI, cam mod *Team WeeWah Racing* Last edited by fast450ridr; 11-14-2012 at 05:26 PM.

12-09-2012, 10:33 PM	#12 (permalink)
alexdeluna21 Junior Member Join Date: Oct 2012 Location: El Paso, TX Posts: 11	is this a good mod to do on the 12 yfz 450R?

12-10-2012, 12:19 AM	#14 (permalink)
alexdeluna21 Junior Member Join Date: Oct 2012 Location: El Paso, TX Posts: 11	@Ctown- LOL thanks bro! My stupid ass would've tried to do it! I guess that's why i ask so many questions....

12-10-2012, 03:55 AM	#16 (permalink)
constable Senior Member Join Date: Oct 2011 Location: Tomball,Tx Posts: 341	Ctown what cams do u recommend on an r/x... my motor is stock.. I have exhaust fci and msd __________________ [IMG][/IMG]2010 YFZ 450X/// Custom Graphics/// /Fuel Customs Intake /// Barkers Exhaust system/// MSD Blaster///2008 YFZ450 cam/// Blingstar front bumper, rear sprocket guard& Disk Brake guard/// Pro taper bars/// ODI lock grips/// CCP stabilizer/// Pro Armor Revolution Nerf bars w aluminum Heel guards/// Power madd hand gaurds/// Shock Pro Shock covers

12-10-2012, 07:22 PM	#17 (permalink)
alexdeluna21 Junior Member Join Date: Oct 2012 Location: El Paso, TX Posts: 11	x2 ^^^^

12-11-2012, 09:18 AM	#19 (permalink)
jaredp Senior Member Join Date: Jul 2011 Location: Wisconsin Posts: 272	Here are mixxer's thoughts on cams. Dunno if its current or if your referring to the "dirtbike" cam for more mid range as a few builds on here currently are trying out. This is the thread mixxer grabbed some of the specs from, also some good information there. __________________ Give us a call 715 341 9919

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01-07-2013, 06:31 PM	#20 (permalink)
drew32 Junior Member Join Date: Oct 2012 Location: Fort Collins Co. Posts: 16	Please Help So i started to do this mod, i got everything off including the cam cover but my exhaut cam has only 1 dot/hole in it and my intake has 2. and if i get the exhaust level with the head then the intake is not level with the head, either one of the dots .Why is this? Its an 07 yfz 450 special edition. Stock from what i know Bought it used from a dealer??