Obviously I could buy another set of rockers, but at $1000 a set i'm reluctant to waste any money on what I cant return. * my head specialist is amazed, and yella terra says its unusual. * I have contacted yella terra with pics and they have told me they are the correct rockers. * I have tried an older set of rolla rockers still yella terra and they are still slightly too close but better. * I have done an impression to check the valve train geometry and the marks I get are in the centre of the valve at the correct thickness. and have put the push rod shorter than what crane recommends and longer. * I have an adjustable push rod - lunati. * tried the factory rockers with both the lunati lifters and the standard lifters, both ways the push rod is centred * I have tried swapping bak to the factory rocker arms and the push rods are perfectly in the centre of the guide holes. 7429461 HOLDEN J127 6 L Any help would be much appreaciated. Both sets will bolt directly in place of the stock rockers under. Help me identifiy a Yella Terra Head please.: Hi i just got a yella terra head for my torana and i dont know what stage it is, type etc, i have it removed from the motor and heres the numbers on the side, in order. Some basic info, the motor is a 304 out of a vt ss, roller. Yella Terra 1.6 ratio roller rockers: More stable, quieter valvetrain (no more. I am building a 355 stroker fairly mild, put on the rolla rockers and started adjusting and noticed the pushrod is so close to the cylinder head its practically scraping. Just wondering if any one has had problems with yella terra roller rockers ?
#Yella terra rockers yt 6628 free#
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Maintains lash and reduces necessary and tedious engine maintenance.If you're here you either own a V8 or have an interest in them whether it be Ford or Holden, Chev or Cleveland, who can blame you? You can join thousands of other V8 enthusiasts from around Australia, New Zealand and the rest of the world discussing all topics on car modifications, maintenance and racing! Its easy to join and only takes about 30 seconds! Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers.High ratios allow for additional lift on stock and aftermarket camshafts. Various ratios available, catering for every camshaft grind.Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification.Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.Intricately balanced CNC billet arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine.Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.Built to withstand 600lbs* max open spring pressure.Ideal for harsh street and strip applications, these rockers have got what it takes to last! Our wide range of true ratios allows you to achieve high lift without relying solely on your camshaft… a trend many engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift. Manufactured and assembled in Australia using the highest quality materials and componentry consistent with those found in our Platinum race series.
No other comparable product can compete with 600lbs* maximum open spring pressure whilst retaining factory size bolt-down hardware. Designed for high revving street/strip applications.