Out with the old in with the new

[Phlash_riot]

Ok Sarge your out..LOL J/K

... ... please don't BAN me



Anyhow. Lifters:
First how do you know you have to replace them:
- Without tear down
- Having them out of the engine and in your hands?


If I was going for 400 Rwhp with a CheaTR Cam and chromemolly pushrods, roller tip rockers(1.7 unless I can get away with 1.8but that is another thread for me there) and new springs(again another thread to post up on and more than likely stock valves; Can i put bigger valves into the 843 heads or should i go with the 241 and port those instead) should I stay with stock or get aftermarket?
What aftermarket ones to get?
I know that if i get new one i will NOT be putting in Comp "R" versions.

But how do you choose one? What do you look for in one?

I know I know MORE questions... ... ...

[Phlash_riot]

Ttt

[mrr23]

lifter replacement
without a teardown - having a ticking noise coming from the valve cover area.
having them out of the engine - push down on the lifter cup. if the cup moves really easy, then the inner spring is going bad.

going 1.8 rockers will most likely cause piston to valve interference unless you flycut the pistons. stay with the 1.7 and get the vinci/crane accelerated lift rocker kit.

i haven't replaced any of my stock lifters.

to put bigger valves into a head, you have to cut the seat to match and port the bowl area at the least to achieve any gains from doing it.