...so, I'd be interested in hearing peoples opinion, especially Otters (not to be picking on you).

When I was at the dealership for an oil change at 42'000 km, I spoke to the manager about the upcoming 48'000km service which includes the valve lash adjustment. He says that it's not necessary to do it at 48'000 and may not even be necessary at 92'000 but could be done if I wanted it to be done if I feel the valve lash may be off a bit.
He says that all of the ralliarts he seen didnt need the valve lash adjusted at 48'000, that it was still fine.

I realize he may be trying to save me some money, as odd as that sounds, but wanted to see what you guys thought.

 

DIY saves the most money

https://www.evolutionm.net/forums/la...alve-lash.html

 

Irregardless, if its unnecessary in the first place I dont have to do it at all.

 

ok i know i sound like a newb which i fully admit to being but what is valve lash

 

I'd be fine to listen to him and skip it until the next interval. Even though I check mine every 30k, I haven't had to adjust it every 30k, sometimes it's fine, sometimes it's a bit off. There's no harm if it starts to go out of spec, just a bit of power loss and increased valvetrain noise.

 

Adjusting the gap between the rocker arm and valve stem. A gap too large, as Otter said, can decrease performance and you'll hear a 'ticking' noise from the engine as the rocker arm hits the valve stem.

 

ok and how many miles should it be done? ive got a buddy who is great with cars and im sure we both can figure it out i ended up finding the DIY on it after i sent that post

 

It should still be checked every 30k, I'm just saying that it won't be the end of the world if you skip it once.

 

well im at 50k in my 04 so ill prolly start thinking about it. how much power do you think you actually lose to it