Yfz450 Cam Mod - Page 25 - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums

**Terse** · 10-02-2011, 10:16 AM

Quote:

Originally Posted by silver06wrx

wondering if its even possible on a 2011 .. but isnt that what the msd is for to change the timing anyways

Those are two different timing changes.

One is cam timing.... changes when the valve it's self opens/ closes etc.

The MSD controls the ignition timing... when the spark is ignited.

brandon32689 · 10-02-2011, 01:40 PM

Awsome thanks man.

sjseng · 11-06-2011, 03:01 PM

Just bought my wife an '07 YFZ450 SE. The bike has as an LTE (Looney Tuned) dual exhaust and intake kit with K&N. I ride a Raptor 700 but am looking forward to riding with my friends, who all have Honda TRX 450's, and show them what the Yamaha 450 can do.

So the question is that I may have missed over, is the Cam Mod sufficient on its own with stock cam, or more effective with a new HotCam? Or will the HotCam and mod cause problems?

Thanks, Tyler

'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

**Terse** · 11-06-2011, 03:49 PM

You can not cam mod a Hot Cam brand cam. They come modded from HC.

Congrats on the yfz.

sjseng · 11-06-2011, 05:22 PM

Quote:

Originally Posted by Terse

You can not cam mod a Hot Cam brand cam. They come modded from HC.

Congrats on the yfz.

That would make since. Thanks!! So any benifits between the two options (besides cost of new cam)? On performance?

FogleDw · 11-07-2011, 01:03 AM

Great step by step, Did today. Can feel a differents on the topend for sure. The only thing you should add to that is a pic showing the criss cross pattern to torque the bolts for the people that dont know to to that. I saw one and can't find it now

93yfzrider · 11-13-2011, 12:23 PM

ok so i looked up everything on the cam mod did it in my shop but i think it is a horrible idea i ride track and trails and i am pretty sure it is a great mod for drag bikes but for track and trails i think it is a horrible idea

sjseng · 11-13-2011, 07:29 PM

Quote:

Originally Posted by 93yfzrider

ok so i looked up everything on the cam mod did it in my shop but i think it is a horrible idea i ride track and trails and i am pretty sure it is a great mod for drag bikes but for track and trails i think it is a horrible idea

Why? I was looking at this option, but now I want to know why you think this. You got to tell the whole story.

jaylh123 · 11-29-2011, 10:06 AM

will this mod work on an09, fule injected, 450r

civic_hatch88 · 11-29-2011, 10:48 AM

"cam mod" does not work on FI models, been done at yamaha already.

06yfzlimited · 12-31-2011, 01:44 PM

Hello im new to the site I have a 06 yfz and I did the cam mod and my chain has jumped timing twice its jumping off on the intake cam. Has anyone else had the problem I've heard the 06 and 07 r different and it doesn't need to be done. Some please help I don't know what im doing wrong. Thanks for any advice!

yfzjoe · 12-31-2011, 03:26 PM

Did you release the flat head screw inside the the auto cam chain tensioner? When you took it off did you tighten down the screw under the big bolt in the middle of the tensioner so it retracts the plunger, then when you put it back together you just turn the screw a little bit to loosen it, then it adjusts itself? Do NOT adjust it manually by screwing the screw till the chain is tight, just back it off a little bit and it will do the rest by itself.

I don't think there is a difference until '09 the fuel injected YFZs are already modded from the factory.

06yfzlimited · 12-31-2011, 03:58 PM

I did everything like u just said twice cause its jumped twice. I've looked and the 06up have deferent part #'s for the cam and crank than 05 down. I talked to a yamaha service guy he said tighten the tensioner a little when u release the tension... gonna try that I guess and put it back stock

R&S POLISHING · 01-30-2012, 10:26 PM

is their a big advantage to doing the hot cams over the simple "cam mod" ?

**Terse** · 01-30-2012, 10:34 PM

Quote:

Originally Posted by R&S POLISHING

is their a big advantage to doing the hot cams over the simple "cam mod" ?

Hot cams do make more hp over 8k rpm over the cam mod, but loose 3-4hp under 8k rpm compared to the cam mod.

So the bigger question is what rpm do you spend your time in?

Mad Dingo · 02-23-2012, 08:53 PM

does this apply to 09 450r ? Or is the cam mod for older ?

civic_hatch88 · 02-23-2012, 09:01 PM

It does not apply to the FI models, but you can use the carb intake cam in a FI for more power.

yfz72789 · 03-08-2012, 01:01 PM

all i have is exhaust jet port and polish and cam mob and my bike is strong not the fastest out there but any banshee r 450r with bolt on i burn them every time you deff should do the cam mob

Ford2ner · 03-13-2012, 01:41 AM

What would happen if the cam mod was done backwards where the exhaust cam was advanced 1 tooth? I tore my bike apart and that's how it was so I did the cam mod and haven't had a chance to drive it yet.

cbohenek · 03-29-2012, 01:59 PM

do i need to rejet the carb if i do this mod?

11-07-2011, 01:03 AM	#486 (permalink)
FogleDw Member Join Date: Oct 2011 Location: York,Pa Posts: 30	Great step by step, Did today. Can feel a differents on the topend for sure. The only thing you should add to that is a pic showing the criss cross pattern to torque the bolts for the people that dont know to to that. I saw one and can't find it now Last edited by FogleDw; 11-07-2011 at 01:17 AM.

11-13-2011, 12:23 PM	#487 (permalink)
93yfzrider Junior Member Join Date: Nov 2011 Posts: 6	cam mod:( ok so i looked up everything on the cam mod did it in my shop but i think it is a horrible idea i ride track and trails and i am pretty sure it is a great mod for drag bikes but for track and trails i think it is a horrible idea

11-29-2011, 10:48 AM	#490 (permalink)
civic_hatch88 Senior Member Join Date: Mar 2011 Location: Las Vegas Posts: 219	"cam mod" does not work on FI models, been done at yamaha already. __________________

12-31-2011, 03:26 PM	#492 (permalink)
yfzjoe Member Join Date: Nov 2011 Posts: 77	Did you release the flat head screw inside the the auto cam chain tensioner? When you took it off did you tighten down the screw under the big bolt in the middle of the tensioner so it retracts the plunger, then when you put it back together you just turn the screw a little bit to loosen it, then it adjusts itself? Do NOT adjust it manually by screwing the screw till the chain is tight, just back it off a little bit and it will do the rest by itself. I don't think there is a difference until '09 the fuel injected YFZs are already modded from the factory. Last edited by yfzjoe; 12-31-2011 at 03:29 PM.

02-23-2012, 09:01 PM	#497 (permalink)
civic_hatch88 Senior Member Join Date: Mar 2011 Location: Las Vegas Posts: 219	It does not apply to the FI models, but you can use the carb intake cam in a FI for more power. __________________

10-02-2011, 01:40 PM	#482 (permalink)
brandon32689 Senior Member Join Date: Sep 2011 Posts: 212	Awsome thanks man.

11-06-2011, 03:01 PM	#483 (permalink)
sjseng Junior Member Join Date: Nov 2011 Posts: 4	Just bought my wife an '07 YFZ450 SE. The bike has as an LTE (Looney Tuned) dual exhaust and intake kit with K&N. I ride a Raptor 700 but am looking forward to riding with my friends, who all have Honda TRX 450's, and show them what the Yamaha 450 can do. So the question is that I may have missed over, is the Cam Mod sufficient on its own with stock cam, or more effective with a new HotCam? Or will the HotCam and mod cause problems? Thanks, Tyler '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

11-06-2011, 03:49 PM	#484 (permalink)
Terse Bad Azz Admin Join Date: Aug 2005 Location: Colorado Springs, CO Posts: 10,127	You can not cam mod a Hot Cam brand cam. They come modded from HC. Congrats on the yfz.

11-29-2011, 10:06 AM	#489 (permalink)
jaylh123 Junior Member Join Date: Nov 2011 Location: PA Posts: 16	will this mod work on an09, fule injected, 450r

12-31-2011, 01:44 PM	#491 (permalink)
06yfzlimited Junior Member Join Date: Dec 2011 Location: defuniak springs Fl. Posts: 4	Hello im new to the site I have a 06 yfz and I did the cam mod and my chain has jumped timing twice its jumping off on the intake cam. Has anyone else had the problem I've heard the 06 and 07 r different and it doesn't need to be done. Some please help I don't know what im doing wrong. Thanks for any advice!

12-31-2011, 03:58 PM	#493 (permalink)
06yfzlimited Junior Member Join Date: Dec 2011 Location: defuniak springs Fl. Posts: 4	I did everything like u just said twice cause its jumped twice. I've looked and the 06up have deferent part #'s for the cam and crank than 05 down. I talked to a yamaha service guy he said tighten the tensioner a little when u release the tension... gonna try that I guess and put it back stock

01-30-2012, 10:26 PM	#494 (permalink)
R&S POLISHING Junior Member Join Date: Jan 2012 Location: Medford Oregon Posts: 14	is their a big advantage to doing the hot cams over the simple "cam mod" ?

02-23-2012, 08:53 PM	#496 (permalink)
Mad Dingo Junior Member Join Date: Feb 2012 Posts: 9	does this apply to 09 450r ? Or is the cam mod for older ?

03-08-2012, 01:01 PM	#498 (permalink)
yfz72789 Junior Member Join Date: Mar 2012 Posts: 9	all i have is exhaust jet port and polish and cam mob and my bike is strong not the fastest out there but any banshee r 450r with bolt on i burn them every time you deff should do the cam mob

03-13-2012, 01:41 AM	#499 (permalink)
Ford2ner Member Join Date: Feb 2012 Location: Eglin AFB, FL Posts: 40	What would happen if the cam mod was done backwards where the exhaust cam was advanced 1 tooth? I tore my bike apart and that's how it was so I did the cam mod and haven't had a chance to drive it yet.

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03-29-2012, 01:59 PM	#500 (permalink)
cbohenek Senior Member Join Date: Jan 2012 Location: 18344, mount pocono pa Posts: 180	do i need to rejet the carb if i do this mod?