Yamaha YFZ450R Engine!

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May 6, 2012
WoodsmanSkills Says:
I have a question about my 05 yfz 450 im changing the crand because of lower rod failure and I noticed that the oil pump will spin free and then drag and then free and again drag like there somthing in there... So i will buy a new oil pump but can i use the 07 oil pump and will it bolt up? Please someone tell me as soon as possible?

Feb 18, 2012
fzrsmkr Says:
- Head porting will give the highest performance gain without sacrificing reliability or having to use special fuels. Thanks for viewing & commenting! - Shawn

Feb 13, 2012
moeld6179 Says:
do u have any suggestions for mods to do on a yfz450r that will increase the hp's but still able to run pump fuel and maybe a lil race fuel

Dec 24, 2011
Rawly5 Says:
GO TO YFZ CENTRAL

Dec 5, 2011
MarinneV Says:
why was he trying to do a valve adjustment? did he put a different cam in or something? Anyway, do you know anything about MSD blasters?

Nov 6, 2011
stinkyfarts445 Says:
so this isn't a problem i should watch for on my 2010 yfzr? I haven't had any cam mods and if i do I'm having my local yami shop do it

Jul 16, 2011
fzrsmkr Says:
- Yes, this is normal with the stainless steel exhaust system that is used on most high performance 4-stokes these days. A very commonly asked question as the owners manuals never mention this. On older bikes, this would be cause for concern... Thanks for viewing and commenting! - Shawn

Jul 14, 2011
Sandeep9201 Says:
you seem to know a lot... well my stock 09 YFZ450R header is glowing for the about 6 inches of it starting from were the head meets the header.... IS THIS NORMAL???

Mar 2, 2011
midwayer209 Says:
Thanks good to know! I got a yfz450R too.

Sep 23, 2010
fzrsmkr Says:
Yeah, sure about the chain. The old one was blued from extreme heat caused by the came chain tensioner being installed incorrectly and making the cam chain way too tight. Really surprised that it did not snap! Thanks for viewing and commenting! - Shawn

Sep 14, 2010
bastiaan08 Says:
Are you sure about the chain? Because you've got different types of chaines. You've got hardened chaines who are always blue or just chains made from harder steel. The first are cheaper to produce because at production the metal is weaker and cost less hardened tools to manufacture than working with harder steel.

Jul 16, 2010
scrimmy6969 Says:
then you take it to someone who can or you buy the tools and a yamaha manual and do it yourself

Jul 14, 2010
fzrsmkr Says:
Yeah, but it's rare that you have to. Massive clutch or engine failure is usually the only time this needs cleaning.

Jul 13, 2010
mxpimp45 Says:
so you have to split the case to clean this screen? wow thats a lil over kill for us that dont have the tools or knowledge to spilt the cases

Jul 12, 2010
fzrsmkr Says:
Yes, I've been a technician for 30 years. Thanks for viewing and commenting! - Shawn

Jul 12, 2010
TheDuramax66 Says:
Are u a macanic for atvs or what love the video put more

Video Details

http://www.fzrphotography.com http://www.shawnsmoak.com The owner of this 2009 Yamaha YFZ450R tried to save some money and adjust his own valves. He did not know how to correctly reset the cam chain tensioner and did some serious tensioner and chain damage. He was very lucky in two ways. Fir... More