ashade98

iTrader: (16)

As stated... Are they worth it? What's better or equal? Any advice is appreciated.

mrr23

iTrader: (3)

dyno 9 before
dyno 11 500 miles later
dyno 14 10 months later

XTrooper

That's a question only you can answer, but for me they were definitely worth it. I replaced a set of SLP 1.85 rockers for a set of Crane 1.80 Quick-Lift roller rockers and, even though I lost a little valve lift, I gained 10 rwhp and 8 rwtq.

~JOSHUA

iTrader: (92)

It's NOT a good mod for the money. I had 1.8 Harlans before I got the cam and it didn't feel like anything. Plus it limited the cam choices in the future. I sold 'em!

XTrooper

Rocker arms, like most everything else, are not all created equal. Not worring about what they may or may not "feel like," if you look at some of the real world dyno-proved gains the Crane rockers have made, they certainly can be considered worth the money.

ashade98

iTrader: (16)

Thanks for the info!

My other question to those who have used the crane rockers is....

Once they're adjusted and preload set, do they hold their setting, or is it something i'm going to be constantly tinkering with?

smask04C5

iTrader: (1)

once there adjusted, leave them alone. rocker adjustment is tedious, but by no means difficult

kenp

iTrader: (9)

There are certainly people on this site who are more knowledgable than me when it comes to these kinds of things, but when I looked at my options for kicking it up a bit, the Cranes seemed worth it to me. I didn't want to put in a new cam just yet, but I was having some valve float so I was going to install new springs and retainers and decided to upgrade the rockers while I was in there. I didn't think adjusting the rockers was all that bad. It was getting the coil packs removed and getting the rocker covers off that was a PITA. Reaching under the cowl to get to fasteners and bolts was painful because the little plastic push pins sticking through the cowl cut like razor blades. Anyhow, the Crane rockers changed the sound of my car to a deeper or more throaty sound. I like that. The geometry of the Crane VHP rocker ramps the valve open sooner and longer and adds lift. Isn't that part of what people are doing with camshaft swaps? I changed from my factory 1.7 rockers to the Crane 1.8 rocker which is actually a bit more than 1.8. Are they worth it? They are pricey but I guess you get what you pay for. I'll be taking my car to a dyno this summer to optimize my tune and see what I'm putting down at the rear wheels. I thought it was a reasonable alternative to changing cams at this point and from that perspective I thought it was worth it. I can say w/o question that my car runs better since the valve train upgrade. We'll see what the dyno numbers are here in a little bit. BTW my car is an '02 LS1 with a lid, SLP bellow, free mods & factory exhaust.

Redneck Z

iTrader: (3)

So they don't every require any further adjustment once they are set? Can you go years without ever having to touch them again? I tend to put a lot of miles on my daily driver and don't want to be fooling around with them all the time. Would the rocker arms need adjusting before my 918's need replacing?

Spinmonster

They do not require periodic adjustment. Hydr. lifters adjust for you.

mrr23

iTrader: (3)

why does it limit your cam choices? piston to valve clearance, supposed ramp rates, springs may not be able to handle the ramp rate, what exactly???

picking the right cam is what you need to do. vinci has already shown that going to a smaller cam with the higher ratio rockers make more OVERALL power than the larger cam and stock ratio rockers. hell, they even used the 1.7 accelerated lift rockers on the larger cam to 'help' it out.