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MORE POWER FOR 2005 YZ250F

By tim1x, 23 April, 2007
Forum Topics
Yamaha

I HAVE A 2005 YZ250F WITH STAGE 1 HOT CAMS, VERTEX PISTONS, HOTCAM CRANK, K.N AIR FILTER LOOKING TO GET MORE POWER

tigmaster

18 years ago

well my first and probaly obv

well my first and probaly obvious question is it jetted for the cams and filter. also do u have a pipe? if not get one! how are the valves holding up? how many times have u shimmed? if its more than 5 u are losing lots of power through a most likely compression leak in the valves. have u check the compression. also when u bought the piston did u buy a new cylinder or hone and recoat the old one? yamaha has an aluminum sleeve right? there is no way u can even get 75% of the performance of that piston if u didnt swap out cylinders or hone. also to handle the power u have now, did u get new pressure plates and stiffer springs because i guarantee u will get a little slip from time to time with any increase in power and keeping stock springs. Moose also sells a high compression head gasket, which can give u a little boost in power. so theres a little, sorry i couldnt help more.
---Mototips Giveaway, Check It Out Here---

perpetualjoshie1

18 years ago

bike

get a bore kit or something. dose it have a rev limiter

tim1x

18 years ago

In reply to well my first and probaly obv by tigmaster

MORE POWER

I HAVE PROCURCUIT PIPE AND VALVE SPRINGS AND I HAVENT SHIMMED IT MORE THEN TWICE I HAVENT CHECK THE COMPESSION YET , I CAN KICK IT OVER BY HAND THATS WHY I BOUGHT ALL THOSE PARTS I LISTED ABOVE PLUS I ORDERED A JETTING KIT I WAS WONDERING IF THIS WOULD GIVE ME MORE POWER

tim1x

18 years ago

In reply to bike by perpetualjoshie1

MORE POWER

DONT WANT A BORE KIT AND YES IT HAS A REV LIMITER WANT TO GET THE MOST POWER OUT OF STOCK

DirtyMatt

17 years 10 months ago

In reply to MORE POWER by tim1x

Get it Ported! Take it to a s

Get it Ported! Take it to a specalist who has a flowbench to make sure its done right! If you dont you might lose all that you have gained.

mxdave

17 years 10 months ago

In reply to Get it Ported! Take it to a s by DirtyMatt

Get a 450??

Of course it has a limiter. Get a 450 if you want more power.

stevo11

17 years 1 month ago

In reply to Get a 450?? by mxdave

i gota 2005 YZ250F

i gota 2005 YZ250F too

and the head has been ported and it also has a full

Leovince pipe (carb jetted to suit)

it is really tourqey off the bottom

i love it!

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