aftermarket rocker arms

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Mar 16, 2007 | 11:26 PM

qwikz28

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From: Franklin Lakes, NJ

aftermarket rocker arms

i'm mid-way through a heads/cam swap (torquer 3 which is a LSK/XE-R) and i just read a thread about aftermarket rocker arms but created my own because i didn't wanna ***** his. i see mixed reviews and am wondering what kind of installation aftermarket rocker arms require, specifically yella terras, and what the advantages are. are yella terras adjustable? thanks

Jacob

Mar 17, 2007 | 12:12 AM

Zymosis

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Just throwing this out there as an idea or another option. Why not get the stockers rebuilt by Harland Sharpe?

The stockers tend to blow their needle bearings which is no fun to clean up. However the rebuilt stockers are strong, and maintain their lighter weight.

Mar 17, 2007 | 12:26 AM

BOWTIE

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From: AUSTIN TX

Quote:

Originally Posted by qwikz28

are yella terras adjustable? thanks

Jacob

My understanding is NO. In addition it is my understanding that most of the relatively inexpensive adjustables rely on a a stud screwed into the small *** factory metric bolt hole. From my experience with old school stuff this would cause a considerable amount of rocker stud flex especially with good dual springs and high lift cams. I have also read that most of the inexpensive bolt on replacement rockers (Harlands, Yella Terra, etc) are actually heavier at the valve than the stock rockers so they require even more spring to compensate for that. Since I can not afford shaft rockers that are adjustable, I have decided to do what the previous poster suggested and send my stockers off to Harland for the upgrade. That wil give me the best light weight rocker I can afford (about $250.00).

Mar 17, 2007 | 07:31 AM

vettenuts

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From: Little Rhody

I believe Yella Terra makes an adjustable and a non-adjustable version for the LSx. I have the Cranes and prefer their stud mount since the adjustment hardware is at the fulcrum and not in motion with the rocker (Jesel), which is more mass you have to accelerate with the valve. The smaller portion of the stud shouldn't flex if properly preloaded, although the 3/6-16 upper stud section can flex.

Mar 17, 2007 | 04:26 PM