450R killer - Yamaha ATV Forum
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post #1 of 27 Old 04-23-2008, 05:14 PM Thread Starter
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450R killer

i just bought i 08 YFZ 450 and its the best quad i ever had. That being said, my buddy has a honda 450R and he spanks my ass in a drag. I get his quad and the same thing happends the honda wins. i only wanna spent about a 1000 bucks and i wanna to be able to smoke his ass. What can i do to make my YFZ pull like hell on bottom mid and on top.
My buds 450R has a full exhaust, jetted, and a cam
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post #2 of 27 Old 04-23-2008, 07:31 PM
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Originally Posted by quadjocky221 View Post
i just bought i 08 YFZ 450 and its the best quad i ever had. That being said, my buddy has a honda 450R and he spanks my ass in a drag. I get his quad and the same thing happends the honda wins. i only wanna spent about a 1000 bucks and i wanna to be able to smoke his ass. What can i do to make my YFZ pull like hell on bottom mid and on top.
My buds 450R has a full exhaust, jetted, and a cam
I have an 07 with an Edelbrock carb., uncorked stock exhaust and a -6 oz. flywheel from Trailtech. The quad is faster than my friends with a pipe and jetting. I think the flywheel is the most overlooked items when people are trying go faster. The lighter flywheel lets the motor spool up much faster than stock. The Edelbrock is also an overlooked item to go fast. Its larger than the stock carb. and is so easy to tune its ridiculous. A perfectly tuned carb. is worth a couple of horsepower.
I'm eventually going to install a Dr. D pipe, install an intake and YZ time the cams.
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post #3 of 27 Old 04-23-2008, 07:52 PM Thread Starter
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how much was the flywheel and how hard was the install
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post #4 of 27 Old 04-23-2008, 09:57 PM
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how much was the flywheel and how hard was the install
I purchased it direct from Trailtech and was $139. You may be able to find them cheaper through a dealer.
You need a $20 Yamaha specific puller also sold from Trailtech and a torque wrench.
They are really easy to install.
Go to www.trailtech.com and do a dealer search for a cheaper price.
Like I said before, one of the most overlooked mods you should do.
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post #5 of 27 Old 04-23-2008, 10:03 PM
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post #6 of 27 Old 04-24-2008, 09:12 AM
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I personally would spend the money on a decent exhaust, good intake (Ron Woods or FCI) and a Hotcams Intake cam, then cammod the exhaust cam
the lightened flywheel will hlp ya rev faster, but it will also help you stall more
and the yfz stalls enough in my opinion

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post #7 of 27 Old 04-24-2008, 11:13 AM
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I personally would spend the money on a decent exhaust, good intake (Ron Woods or FCI) and a Hotcams Intake cam, then cammod the exhaust cam
the lightened flywheel will hlp ya rev faster, but it will also help you stall more
and the yfz stalls enough in my opinion
I forgot to mention that I have the Rekluse "Pro" auto clutch and stalling never happens. Another awesome product!
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post #8 of 27 Old 04-24-2008, 01:44 PM
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that would definitely help the stalling prob!

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post #9 of 27 Old 04-24-2008, 04:16 PM
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When the quad was new, I really didn't like the slow speed bucking and stalling. The Rekluse completely eliminates that.
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post #10 of 27 Old 04-24-2008, 05:20 PM Thread Starter
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what is a good exhaust for all around power i was think of a fmf or a hmf, and is a full exhaust that much better than a slip on
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post #11 of 27 Old 04-24-2008, 06:44 PM
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first off, get some jets, the new bike is going to be lean as hell. if you wanna drop some cash, dasa exhaust is getting some good buzz going, i havent ran one, but alot of people swear they are good. i run a gytr and get plenty of power, do the cam mod, and get a good intake and filter like hefe said and you will eat that R for breakfast.
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post #12 of 27 Old 04-24-2008, 08:56 PM
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Dr. D
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post #13 of 27 Old 04-25-2008, 11:37 AM
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Nmotion exhaust, GYTR CDI Box, and I have a Fuel Customs intake system I'll sell you for $145 shipped. OH the cam mod as well. GYTR needle, 45 PJ, 170 MJ.

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post #14 of 27 Old 04-25-2008, 11:41 AM
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that is a good price on the fci

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post #15 of 27 Old 04-25-2008, 03:06 PM
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Nobody mentioned this but a nice set of tires for the type of terrain you ride in might help ya speed up a bit...if it's a brand new 08 Im sure the stock tires are still meaty enough but as they wear thats something to keep in mind. Or if you're riding on sand, a set of paddles would help you hook up better too...just something else to think about anyway. These guys have most of the basic hop-ups covered pretty well.

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post #16 of 27 Old 04-25-2008, 05:44 PM Thread Starter
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The place where iI ride ranges from sand to mud to rocky trails what is a good all around tire?
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post #17 of 27 Old 04-25-2008, 06:58 PM
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Hmm well I'd say one of the Maxxis Razrs (Razr or Razr2) or the ITP Holeshots...they're very similar tires and would probably work well in most terrains. I can personally say that the iRazrs work AWESOME in mud and rocky trails, however they suck in loose packed ground (like sand)...so you probably wanna stay away from them.

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post #18 of 27 Old 04-25-2008, 06:58 PM
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Oh actually the Kenda Knarlys might do you good

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post #19 of 27 Old 04-26-2008, 09:56 AM
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yea i got the kenda knarly mxr's and they are great...i ride alott of the same terrain as u with a banshee that prob has more power then urs and i dont have grip issues at all,the saying goes,whats the sence of having high power if u cant plant it to the ground...stock yfz tires are junk,but yea rejet,cam mod,even just uncork it for now and get a k&n and ull n otice a deff power gain..good luck

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post #20 of 27 Old 04-26-2008, 03:00 PM
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Yeah the Knarlys are sweet...I ran them for a long time on my YFZ with all the mods like that and they hooked up awesome. The tread is spread out enough to self clean and all in the sloppy crap but close enough together to still grip in softer terrains. Good tire

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