My $.02 
Harlan Sharp rockers
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Harlan Sharp rockers Is anybody running a set of the Harland Sharp rocker arms or heard much about them, Ive been looking at getting a set for awhile and was just wondering if they would be a good investment. 
Originally Posted by mcflyz28
I run the 1.8's no problems
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Thanks for the replies, it seems that for the money ( half the cost of jesel, comp, or crane ) that these would be a good investment. My main goal for getting the rockers is to cut down on some of the valvetrian noise. Hopefuly 
Originally Posted by nostyta
Thanks for the replies, it seems that for the money ( half the cost of jesel, comp, or crane ) that these would be a good investment. My main goal for getting the rockers is to cut down on some of the valvetrian noise. Hopefuly
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Originally Posted by jimmy 2 Times
actually, i think i picked up some valvetrain noise. I got them because i upgraded everything else, and i didn't trust the stamped stock rockers. I just got them for piece of mind
I was told by the shop that done my H/C package that going to full roller rockers would help get rid of some of the valvetrain chatter.
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Originally Posted by nostyta
I was told by the shop that done my H/C package that going to full roller rockers would help get rid of some of the valvetrain chatter.
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Originally Posted by AsianIce25
the new crane accellerated lift rockers use a new type of bearing that is supposed to cut down on valvetrain noise. the new 1.7 design will give you more life from .000lift to .300 lift with a final ratio of 1.72:1. so theyll give you more power and less noise, but thyre like 699, but come with new studs, guide plates, and pushrods. they require shorter pushrods...im think about hese with my 224/224 .560/.560 cam.
Don't really want extra lift, I'm already running a comp 581 lift cam, just want to get rid of some of the valvetrian noise, but thanks I have not seen those yet.
they dont really increase the overall ratio, just the early ratio. so right off the bat their 1.7 rocker starts at a ratio of 1.79:1 as oppsed to about 1.52:1 for the stock pieces. this higher ratio converges on the stated ratio of 1.7:1 at .250-.300" lift and maintains the stated 1.7 ratio thoughout the rest of the duration until the valve closes and it then returns to the higher 1.79:1 ratio as the valve approaches its seat. im looking into these rockers myself. the new bearing allows for a stronger shaft and cause the new bearings support the shaft/rocker around the entire shaft instead of just at the ball bearing points.
Note: the final ratio would be 1.72:1, not 1.7, so your overall max lift will increase, but not by much. it really increases the ramp rate of your cam for more power especially on the low end. your lift would be as follows...
OLD lift: .581
NEW lift: .581/1.7*1.72=.588
Note: the final ratio would be 1.72:1, not 1.7, so your overall max lift will increase, but not by much. it really increases the ramp rate of your cam for more power especially on the low end. your lift would be as follows...
OLD lift: .581
NEW lift: .581/1.7*1.72=.588
Originally Posted by nostyta
Thanks for the replies, it seems that for the money ( half the cost of jesel, comp, or crane ) that these would be a good investment. My main goal for getting the rockers is to cut down on some of the valvetrian noise. Hopefuly
Perry
Originally Posted by ls1mojo
Would crane 1.7s combo fit XER lobes too or TR lobes like the TR224? It would be very convenient and possible increase midrange and off idle tq, or is that too steep.
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AsianIce25 do you happen to know the price of tha Crane accellerated lift rockers I don't really want to spend alot of $ for rockers. (To much other stuff I want)