HD rocker arms ....lesson learned

[digger]

i used one of the hardness files and the 65HRC does nothing to the OE yet the 55HRC bites the HD

[zaq123]

HD as in what IE used to sell? I don't think those very Febi. I''m going to order OEM one just to compare ..good idea

[digger]

HD as in what IE used to sell? I don't think those very Febi. I''m going to order OEM one just to compare ..good idea

i am going by post #11

[zaq123]

OK I got OEM BMW rocker from the dealer so I can compare it to FEBI.. Surprise surprise ....Anyway for $50 for this "OEM" is what one is gonna get these days as OEM. Roker has FEBI marking as well, they aren't even trying to put BMW logo on it. So I got FEBI OEM style, This OEM BMW which is clearly not OEM anymore, FEBI HD and IE HD. I will take a few pics as they are all different. IE HD isn't FEBI HD as the pad is completely different btw

[hasa]

They should be OEM quality and fine for most of the applications excluding high power turbo engines.

[zinc]

I'm interested in the difference in the Febi HD and the IE HD, would be good to see some photos of that.

Were you running the Febi or IE HDs before zaq123?

The MM article mentions "In the summer of 2021, we ordered up every aftermarket M20 rocker arm we could find" so it's not clear exactly what they tested/checked.

I must have got some of the last remaining Febi HD's from bimmerheads last month and about to build a head with them. I noticed IE HDs are back in stock at the moment.

[TobyB]

OK I got OEM BMW rocker from the dealer so I can compare it to FEBI.. Surprise surprise ....Anyway for $50 for this "OEM" is what one is gonna get these days as OEM. Roker has FEBI marking as well, they aren't even trying to put BMW logo on it. So I got FEBI OEM style, This OEM BMW which is clearly not OEM anymore, FEBI HD and IE HD. I will take a few pics as they are all different. IE HD isn't FEBI HD as the pad is completely different btw

This has been BMW's way with the older cars for quite a while now. Put a sticker on it and mark it up 300%.
(Except for SOME stuff, which may still be very nice. But you never know.)
Even in 2005, the ONLY difference was that the Febi rocker had
a roundel on it if it came from the dealer. If it came from the aftermarket, the roundel pad simply wasn't cast.
I went through quite a few of them, back then...

I watched a lot of "HD" rockers eat their pads and the cams, and stayed away.
Like Digger, I found that the pad hardness and retention... wasn't good. Nor consistent.
I could never justify Lester Owen's rockers, so I picked the best of the Febis, and
with good valve springs, they worked to 7500.
Others who went higher had them x- rayed. and the rockers without internal voids would
go quite a bit higher.

t
saved the 'crappy' voidy Febis for street engines.