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feralkid
The Day Starts With OZATV !
Joined: 29 Oct 2007
Posts: 1567
Location: North Western Victoria
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 Posted: Mon Feb 15, 2010 6:22 pm Post subject: YFZ 450 Cam mod |
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When I rebuild my bike I am putting a new cam chain in it so I was thinking while I was there would it be worth doing the cam mod just for a bit more poke. Or is it just too much stuffing around and asking for trouble. Just after opinions on it. I'm not definantly doing it yet.
Just thought I should add it will be done with a mechanic as well not just by me and dad.
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bigjon
Moderator
Joined: 17 Feb 2006
Posts: 1279
Location: Dubbo
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| Posted: Mon Feb 15, 2010 7:20 pm Post subject: |
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The cam mod isn't already done? I haven't meet a YFZ450 without the mod.
Answer to your questions is....yes, have the cam mod done.
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Don't close your eyes during the crash, you'll miss the best part |
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doorslammer
Roostin Away
Joined: 24 Jul 2007
Posts: 902
Location: Northern WA
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| Posted: Mon Feb 15, 2010 9:33 pm Post subject: |
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what is the cam mod? do you just adjust the cam timing a bit or were you talking new cams?
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01 Banshee
Never take life seriously. Nobody gets out alive anyway |
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feralkid
The Day Starts With OZATV !
Joined: 29 Oct 2007
Posts: 1567
Location: North Western Victoria
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| Posted: Tue Feb 16, 2010 6:32 am Post subject: |
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Just adjust the timing. Do a google search on it and it comes up with a fair bit about it.
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"If in doubt go flat out"
"Nothing worth having is easy to get" |
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shacks
90cc 2 stroke / 110 4 stroke
Joined: 03 Apr 2008
Posts: 69
Location: perth
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| Posted: Tue Feb 16, 2010 9:47 am Post subject: |
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Very easy to do, just make sure you double check everything. Mine can be a pain in the arse to start sometimes with the cam mod. This is fairly common from what ive read but it could just be the jetting.
The cam mod is just changing the cam timing to be the same as the YZF. gives a bit more top end power, its quite noticeable. |
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PeteW
Moderator
Joined: 09 Feb 2006
Posts: 1877
Location: Doreen, Vic
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| Posted: Wed Feb 17, 2010 10:06 pm Post subject: |
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what you need to do is turn the Exhaust cam BACK one tooth from its proper mark, this is approx the same aas installing a YZ450 cam from the same year, you will get more benefit from it however if you have a high rev ignition.
when I had my 04 YFZ we tested this mod back to back with one with out it done and the stock one was easier to ride but the Cam mod one definitely had more snap.
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feralkid
The Day Starts With OZATV !
Joined: 29 Oct 2007
Posts: 1567
Location: North Western Victoria
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| Posted: Sat Feb 20, 2010 8:00 pm Post subject: |
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Did you have any trouble starting yours PeteW? I've just googled it and a few seem to have this problem. Is it worth it if its going to be a pain to start or is there an easy fix for it?
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"If in doubt go flat out"
"Nothing worth having is easy to get" |
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PeteW
Moderator
Joined: 09 Feb 2006
Posts: 1877
Location: Doreen, Vic
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| Posted: Sat Feb 20, 2010 9:13 pm Post subject: |
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Nope never had a problem with starting mine, they are harder to start with the YZ cam (it is a bigger change than just moving the YFZ cam one tooth)
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www.dirtcomp.com.au |
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bigjon
Moderator
Joined: 17 Feb 2006
Posts: 1279
Location: Dubbo
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| Posted: Sat Feb 20, 2010 9:17 pm Post subject: |
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I've had no issues starting my old '04 or my current '07, both with cam mod.
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Don't close your eyes during the crash, you'll miss the best part |
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Hudson
4fiddy Racer
Joined: 12 Feb 2006
Posts: 287
Location: This Week... Back in Texas
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| Posted: Sun Feb 21, 2010 2:03 am Post subject: |
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They are really hard to start if you move it back 2 teeth!!
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You Can Fix Alot Of Things In This World But...
You Can't Fix Stupid!!! |
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feralkid
The Day Starts With OZATV !
Joined: 29 Oct 2007
Posts: 1567
Location: North Western Victoria
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| Posted: Sun Feb 21, 2010 7:37 am Post subject: |
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Well I've decided just to do it and see what happens. If I like it like most seem to it will stay and if i don't it won't be that hard to change it back. Bike is getting taken apart today. Doing the water pump first and then the piston ect.
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"If in doubt go flat out"
"Nothing worth having is easy to get" |
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feralkid
The Day Starts With OZATV !
Joined: 29 Oct 2007
Posts: 1567
Location: North Western Victoria
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| Posted: Sun Feb 21, 2010 4:48 pm Post subject: |
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Is it worth me putting a new timing chain in while I am there? Doesn't seem very worn and sounds like a big job to get it off.
_________________
"If in doubt go flat out"
"Nothing worth having is easy to get" |
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