# yz450fcranker

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fishing camping four wheeling and riding
1. ## Turbo YZ

all these calculations for an intercooler? well at least different intercoolers make a difference depending on quality
2. ## power comparison? 400f vs 250f vs 450f

get a 450 its just better
3. ## Turbo YZ

Engine CFM times pressure ratio. Displacement(ci)*rpm*0.5*Volumetric Efficiency (VE) / 1728 = CFM You are multiplying by .5 due to the fact it is a 4 stroke, and dividing by 1728 to convert cubic feet to cubic cc's. I have always assumed the miatas VE at 85%. Now you calculate at each RPM desired your CFM. Oh pressure ratio is 14.7 + boost(psi) / 14.7 So if you happen to be running one bar of boost, or 14.7 psi, it goes like this.. 14.7 + 14.7 / 14.7 = 2 Then multiply 2 by whatever cfm number you got in your nifty CFM equation and that is your cfm for that boost and that rpm. 78cfm+boost= more than 78cfm
4. ## Turbo YZ

i just pulled a number from the feeling of how a 450 works plus hes got a turbo on there so 78+turbo is about 100

maybe 100cfm
6. ## 2012 yz450 Desert Monster

http://justgastanks....products_id=232 Yamaha YZ450F IMS Gas Tank click the dot in the middle for 10-12 its smaller than the clarks and its natural clear
7. ## 2012 yz450 Desert Monster

http://www.ebay.com/itm/Yamaha-YZ450F-Oversize-Gas-Tank-2010-2012-Fuel-Cell-uses-Stock-OEM-Petcock-Valve-/270931065024?pt=Motorcycles_Parts_Accessories&hash=item3f14bff8c0&vxp=mtr#ht_1664wt_1163
8. ## steering stem noise

take the steering stem assembly apart add a bunch of grease and tighten it right
9. ## Stator Question and fan YZ 450 F 05

http://www.proracing.co.uk/xc_lighting_yz.htm maybe this stator light kit works
10. ## Pre 09 wheel conversion solution?

get a new hub for the wheel to accomodate the 09 axle
11. ## Finally the search is over...new 450f acquired!

replace steering stem bearings to the newer steering stem bearings if you have steering stem bearing problems the newer ones that replace the old style come with a seal on the upper bearing to water proof it
12. ## What weight fork oil for '09 yz450?

http://www.thumpertalk.com/topic/808582-yamaha-s1-oil/ grayracer kyb 01 fork oil is s1 yamaha fork oil i use it
13. ## What weight fork oil for '09 yz450?

motorex racing fork oil is pretty close to s1 yamaha suspension fluid
14. ## What weight fork oil for '09 yz450?

http://www.peterverd...uspension_Fluid read the viscosity sheet i think Kyb 01m IS yamaha S1 when compared side to side
15. ## What weight fork oil for '09 yz450?

use kyb fork oil http://www.motocrossdirect.com/Kayaba-01M-FRONT-FORK-OIL-detail.htm?productId=8145703
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