YZ Exhaust Cam - Question

[123BigcoopDawg576]

ok i have an 06wr450 with a drd slip on and jetted correctly.

im looking to add a cam and really want to stay away from hot cams so that leaves me with the yz exhaust cam.

what i want to know is what did you notice different from the stock wr cam

did you have more low end? more mid? more high

[123BigcoopDawg576]

no body has installed the yz cam in their 450?

[surfer]

I have not done that mod but it is next. The stock yz exhaust cams are supposed to be fairly inexpensive and I have heard it makes a noticable difference.

[123BigcoopDawg576]

I have not done that mod but it is next. The stock yz exhaust cams are supposed to be fairly inexpensive and I have heard it makes a noticable difference.

i know all of this! i guess im wondering if it turns the wr motor more in the yz with a stronger hit. more low end

where does the power come on at more noticeably?

[clark4131]

YZ Cam = Snappier power throughout the range. Except for the wide-ratio tranny, it turns your WR into a WZ. You will have to learn better throttle control however...SC

[Justang]

Is it advisable on a dual sported WR?

[Birdy426]

Why not Hot Cams?

[123BigcoopDawg576]

Why not Hot Cams?

alot of people have estart problems with the 450 and hot cams

[MountainMax]

I have one on my DS WR and love it, it makes it wheelie easier too, however the e start is very picky now, when it's warm i need to use the hotlever to start every time, and when it's cold it needs chocke on and two slow twists of the throttle to start, if not it will crank and spit and sputter and won't start.

[beezer]

I bought a YZ cam for 135 bucks for my 08 WR but haven't put it in yet.

When the weather warms up I'll get around to it.

[Bret The Ripper]

I picked up a modified exhaust cam (I assume is was retarded slightly) and a stock YZ intake cam. (I had no idea if its the same as a stock wr cam or not). I picked them up for $90 on ebay.

I had them put in and picked up the bike the other day. The throttle is a lot more snappier, It sounds and feels a bit more aggresive for sure. I haven't got to ride it yet though except for down the block and back. Maybe today I can get out if I can find somewhere with no snow.

Oh yeah, starting is now really really simple. It was stone cold yesterday and fired on one kick. I have to hold the choke half way out with one hand while kicking, but it fired two times cold on one kick. (I did it a second time later to brag to my roomate, he was unable to start his CRF450 at all after flooding it)

I am unsure if it will need rejetting though. I will see how it rides today hopefully.

[MCMArider]

is anyone interested in selling their stock WR I & E cams? I offroad my YZ and would like to try this mod.

[Justang]

is anyone interested in selling their stock WR I & E cams? I offroad my YZ and would like to try this mod.

You want to decrease your power?

BTW, the intake cam is the same.

[SJMC_DON]

OK after 4 different WR's I am thinking that it's time to do this mod so my questions are -

Do I need just the YZ exhaust cam while leaving my WR intake cam in? (It sounds as if the intake cams are the same)

The Hotcams YZ exhaust cam has issues with our auto decomp? (This is what I have heard in other threads).

OEM YZ exhaust cam is best option based on cost and performance?

Any hidden little tricks?

Thanks:ride:

[MCMArider]

thanks for the tip on the intake cams. Yes I would like to smooth out the power. the 450's have more juice than most humans can use on a motocross track. Most of what I ride is tight woods with some fast two track. I gotta practice a lot of throttle control, and in a two hour hair scramble, you can get pretty wore out.

I checked out the different stock cams and heres the deal. My 06 yz 450f has the following numbers, 5TA-12170-10-00, 5TA-12180-10-00. 05 and 06 WR have the same intake as my YZF, exhaust on 06 is 5tJ-12180-20-00, and 05 is 5tJ-12180-10-00. The 07 WR has different intake and exhaust, 5tJ-12170-00-00, 5tJ-12180-30-00.