Well it happened again :(

[brent701]

Head had to come off
Intake valves after Wed's ride went down to .003 from .008

DAMMIT

Not happy right now

[Prednizone]

Don't you still have the head form your old motor? Grab a new head gasket and slap that on there!

[brent701]

Don't you still have the head form your old motor? Grab a new head gasket and slap that on there!

did last night.

not happy after spending 2300 bucks for this enging to now have to fork over another 400-500 bucks into it.

Head is already on and TQ'd down. I need to pick up a 2.40 shim and i am bolting everything back up. going to run the yoshi intake cam and stock exh came. i miss my low end

[Jeremy]

Sounds like somebody needs to take better care of their air filter!

[brent701]

Sounds like somebody needs to take better care of their air filter!

Its cleaned every time i get back from the track

whats that have to do with the valves being sucked into the head?

[rinehart_mitch]

i know if it cant breath well that happens sometimes

[brent701]

i know if it cant breath well that happens sometimes

It has no problem breathing lol./..

Alot of people said dirt can get in there and cause a few problroms. I do not think its dirt.

We will have to wait and see after i get it looked at

[Kramar119]

Never heard of "lack of air" causing valve problems....that is how stock engines are shipped from the factory ... all bottled up and no power.

I will say fine dirt and/or sand getting past your air filter will cause your valves to wear super fast..... as well as riding on the rev limiter.

The more motor work you put into a race motor, the more work you will have to do to maintain that power. Hence why Byrd gets 12 motors a year, one motor for each ATVA race. They are basically disposable. Never a good idea to "over build" your motor for the type of racing/riding and/or your skill level.... unless you want a money pit you will work on more than you ride.

Brent - No offense, just a friendly suggestion, but put your stock head back on and ride ride ride. A novice level rider doesn't need a stage 3 motor. There are so many things to learn as a new ATV rider, and it can all be done on a stock engine with the basics (no air box lid, better air filter, and a new exhaust). I'd hate to see you lose interest in the sport due to constant motor issues. Unfortunately, I've seen it happen before.

[brent701]

.

Brent - No offense, just a friendly suggestion, but put your stock head back on and ride ride ride. A novice level rider doesn't need a stage 3 motor. There are so many things to learn as a new ATV rider, and it can all be done on a stock engine with the basics (no air box lid, better air filter, and a new exhaust). I'd hate to see you lose interest in the sport due to constant motor issues. Unfortunately, I've seen it happen before.

no offense taken..
I ended up with this engine due to mine coming apart. I didn't really want a stage 3 engie but for the price people were asking for stock ones. I might as well have gotten this one. When i got it i was told i got a fresh top end. Thing about that is. I am not sure what they define a fresh top end. I thought of it as a new pistion/jug/head check or service.. All i got was a fresh jug new plate and a new stock pistion. I wanted stock compression so i could run spump gas. really the only thing to the engine yoshi stage wise is a stage 2 head job. port/polish and cams.( The stage 3 is just a tranny serice. which i had redone at ATP and race cut. The valves (INT) do seem larger but i have to wait and see after it gets checked. I have already installed the stock head and only installing the yoshi INT cam for the top end. the exh cam made me lose the lowe end/ stock EXH cam going back in tonight when i get home and put the 2.40 shim in lost.

but yes.. I just want to ride it, at the rate i am going i may not even get to do any more races. i may just do practice on wed nights and have fun

[brent701]

well got it running.

Ended up having to use thhe stock INT cam. the yoshi ones needs to be adjusted (shimed) and i have no shims lol

but it started right up. idles nice has clean throttle response. so i guess we shall see how it rides Wed night lol