OI 480 Build - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
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post #1 of 39 (permalink) Old 08-06-2013, 04:10 PM Thread Starter
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Talking OI 480 Build

Spoke with Dan @ Outlaw Innovations.Ended up ordering a Athena 480 kit, CP 13.1 piston, 450 crank trued,balanced,welded with Falicon rod. Just wanted to get some feedback on what to expect and is there any issues running this combo? I plan to bore the carb and do the +1 head over winter.
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post #2 of 39 (permalink) Old 08-06-2013, 04:11 PM
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No that is a great set up. With a good head that's a 60hp build. Nice





OI, OCP, MMAD, RE, FCI

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post #3 of 39 (permalink) Old 08-06-2013, 04:18 PM
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You will be happy. I have his +1 head on my stockbore and it runs real good, curious to see what your 480 will do, I'll probably end up there eventually
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post #4 of 39 (permalink) Old 08-07-2013, 12:27 AM
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J&T Products here. i am in lapeer, mi. you should consider the oil update kit i offer to protect your build. takec a look at my site.

www.jtatv.com

thanks
todd
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post #5 of 39 (permalink) Old 08-07-2013, 02:28 AM
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J&T Products here. i am in lapeer, mi. you should consider the oil update kit i offer to protect your build. takec a look at my site.

www.jtatv.com

thanks
todd
Definitely a good investment. He did mine, it's a good idea to do it while its apart and have some extra peace of mind and protect all those new parts
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post #6 of 39 (permalink) Old 08-07-2013, 06:45 AM Thread Starter
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Todd. I drove out to you a while back and had to install the oil squirter. I had the red convertible mustang. Oil mod is definatley the first mod to be done on the older yfz's.
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post #7 of 39 (permalink) Old 08-07-2013, 06:46 PM Thread Starter
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Also looking at the monster big core shorty exhaust. Anyone have a sound clip or idea how loud it is?
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post #8 of 39 (permalink) Old 08-07-2013, 07:15 PM
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Also looking at the monster big core shorty exhaust. Anyone have a sound clip or idea how loud it is?
That's what I have, it's loud but it won't make your ears bleed. More of a good loud. The sound drop tip is nice and makes it quiet but I wouldn't ride it with that much restriction for long
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post #9 of 39 (permalink) Old 08-07-2013, 07:48 PM Thread Starter
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Do you have a sound clip?
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post #10 of 39 (permalink) Old 08-07-2013, 09:16 PM
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Ill try and get a video when I get home. If they are picky where you ride you probably want to call Paul at monster and see what he has
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post #11 of 39 (permalink) Old 08-07-2013, 09:43 PM
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Todd. I drove out to you a while back and had to install the oil squirter. I had the red convertible mustang. Oil mod is definatley the first mod to be done on the older yfz's.

if we used the yamaha aluminum nozzle you will have problems for sure!!!


you allready paid for my service so if you can bring or send your case back i will put the correct nozzle in for no charge except shipping if it is mailed. anything other than stock stroke the cp,s will break the yamaha nozzle.

todd
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post #12 of 39 (permalink) Old 08-07-2013, 10:20 PM
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I have a 480 from daniel, great setup! athena kit with cp 13:75:1 pushing 61hp/36tq and that's with the clutch slipping, have to install a lockout and get it dynoed again

and I'm running an 07 bottom end with 07 nozzle, no problems here!

OI 480

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post #13 of 39 (permalink) Old 08-08-2013, 12:55 AM
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I have a 480 from daniel, great setup! athena kit with cp 13:75:1 pushing 61hp/36tq and that's with the clutch slipping, have to install a lockout and get it dynoed again

and I'm running an 07 bottom end with 07 nozzle, no problems here!

have you looked at your nozzle?
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post #14 of 39 (permalink) Old 08-08-2013, 06:45 AM Thread Starter
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Todd- when I tear kt all apart ,I will just make the drive out to you again. Your only 40min from me. Thanks for the heads up on this!
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post #15 of 39 (permalink) Old 08-08-2013, 10:46 AM
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Nozzle should be fine your bike will be the same stroke as an 06+ bike with that crank but since Todd's that close just for an added piece of mind could have it done. my 470 has the same stroke crank with nozzle and a cp haven't had any problems either.
I have seen what your talkin about Todd with the larger crank builds and having the issues with them taking out the oil nozzle. I know +3 mill cranks and up for sure

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post #16 of 39 (permalink) Old 08-08-2013, 11:25 AM
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Do you have a sound clip?
Here's one

Yfz 480 super duner vs built 700r - YouTube

The big core shorty is pretty damn loud, I would stick with the std length can if your on the fence about noise.

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post #17 of 39 (permalink) Old 08-08-2013, 12:29 PM Thread Starter
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Hard to tell from the video, but it doesnt seem super loud.
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post #18 of 39 (permalink) Old 08-08-2013, 12:45 PM
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Hard to tell from the video, but it doesnt seem super loud.
I had a dasa shortened 4" and a mmad oof on my drag bike and the monster big core shorty is up there with the mmad oof db wise, trust me it is loud!

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post #19 of 39 (permalink) Old 08-08-2013, 03:21 PM
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Here's one

Yfz 480 super duner vs built 700r - YouTube

The big core shorty is pretty damn loud, I would stick with the std length can if your on the fence about noise.
Ever had problems with yours hitting the case? Mine had a 1/4" gap the after I rode it the case was ground down
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post #20 of 39 (permalink) Old 08-08-2013, 03:53 PM
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Ever had problems with yours hitting the case? Mine had a 1/4" gap the after I rode it the case was ground down
My dasa did yea, it actually rested on the case most of the time. Sounded great and made great power but they're build quality sucks. Somebody on here has a picture of 4-5 dasa headpipes all layed out together and not one of them are bent the same Monsters are another story though, you actually get the build quality you'd expect out of a $500 exhaust.

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