Quick Auto Decompresser Question

[Leelandc]

I have a 2001 YZF 426 and I want to do the auto decompresser mod. I am just wondering if you have to buy the hot cams mod or can you just take the cam off a YZF450...if I found one for parts?

[grayracer513]

Yes, you can use the 450 cam, but why look for a parts bike? They're only about $100 new from TT OEM.

[Leelandc]

Thats american price though.......I might check with my dealership and see what price they are. I priced the hot cams one and it is $214.99 + tax. Does TT ship to Canada? And is it the exhaust cam that I need?

[grayracer513]

Write them and ask:

http://shop.thumpertalk.com/articles.asp?ID=124

[Leelandc]

Will do. One last question (sorry about them all!)..i got an 01 426, does it matter what year 450 exhaust cam I get?

[1rkcooper]

TT and many other suppliers will ship to Canada. Be sur to have anything you purchased shipped via USPS and not a courier service, you will avoid heafty brokerage fees this way. There are no tarriffs or duties on new or used motorcycle parts. You will probably have to pay taxes and a small handling fee when it comes through customs.

[642MX]

Will do. One last question (sorry about them all!)..i got an 01 426, does it matter what year 450 exhaust cam I get?

I think most people where using the 2003 model cam.

[Gerry B]

2003-2005 is the same exhaust cam.

[02YZ426]

Just remember that the timing marks on the stock 450 cam won't line up in the 426. If you go with Hot Cams its not an issue.

[tammie]

ebay has HOTCAM auto decomp exhaust cam 134.99 USD i just got one and installed it...

http://cgi.ebay.com/ebaymotors/NEW-YAMAHA-WR-YZ-400-426-HOTCAMS-HOT-CAMS-EXHAUST-CAM_W0QQitemZ200085954319QQihZ010QQcategoryZ35595QQrdZ1QQcmdZViewItem

[Leelandc]

"the timing marks on the stock 450 cam won't line up in the 426"....what does that mean...will it be hard to install?

Also does it have to be a 450 cam, will a 250F cam fit?

[grayracer513]

It means what it says. The instructions explain it:

https://www.thumpertalk.com/forum/showthread.php?p=3706078#post3706078

And no, you can't use a 250F cam.

[Leelandc]

When you install the 450 cam, will there be any increase in power or anything like that, that the hot cams have?

[grayracer513]

Yes. Have you read any of this thread?:

https://www.thumpertalk.com/forum/showthread.php?t=60381

Start at the last page and go backward.

[TheRainMan]

Will do. One last question (sorry about them all!)..i got an 01 426, does it matter what year 450 exhaust cam I get?

I recently had the MOD done and it kicks butt......used the OEM 03 YZF 450Cam.

[Leelandc]

Rainman....did you notice any power increase or anything like that with just the OEM cam installed?

[TheRainMan]

Rainman....did you notice any power increase or anything like that with just the OEM cam installed?

I didn't notice an increase in power. The bike seems to have the same power but it's alot smoother. IMO the power seems more useable and being able to kick it over without going through the TDC drill is worth the money!!!

[Leelandc]

Rainman:

Wicked. If you don't mind me asking, how much did you pay for the cam? And did you install it yourself? If so, any difficulties?

[Hot Rods]

the 450 O.E. cam sprocket has a slightly different pitch than the 426. You will not see it with the chain engaging only 1/4 of the circumference of the sprocket, but wrap the 426 chain all the way around a 450 cam sprocket, and you will see.

That is why Hot Cams has "426 specific" cams.

Using a 450 cam in conjunction with the other 426 sprockets will mean wearing out your cam sprockets and/or chain.

[grayracer513]

Using a 450 cam in conjunction with the other 426 sprockets will mean wearing out your cam sprockets and/or chain.

If that were true, then someone would have had such an experience sometime within the last 4 years. No one has.