valve train pushrod geometry setting, weird question... maybe not |
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valve train pushrod geometry setting, weird question... maybe not |
orange914 |
Mar 18 2008, 05:23 PM
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#21
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
following the step by step valve geometry i've got a few possible issues? when no shims used and exhaust and intake geometry is set the swivel feet are almost bottomed out (almost no adjustment left). so next it was shimmed with .025, the geo/swivel tightness got better (not so close to bottoming against swivel) when shimmed with .040 shims i have more space to adjust up left before swivel contacts rocker (3/4 to 1 turn).
bottom line it seems to work out better with .040 shims. with no shims it has wider range of measurements between each valve -and- closer swivel foot to rocker arms. 1] is .040 shim o.k.? 2] if o.k. is 3/4 to 1 turn until swivel foot hits the bottom of the (modified) rocker acceptable? yes they are o.e.m. swivels from a 2.7 3] if not o.k. can i remove .030 or ? more from rocker arm 4] if none of the above is good what am i needing to do to correct this? mike |
VaccaRabite |
Mar 20 2008, 02:44 PM
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#22
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En Garde! Group: Admin Posts: 13,549 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Why would it be bad to deck the arm a little more instead of adding more shim? Is shimming just easier then decking? I can't see how a .070 deck would provide less structure then a .060 deck.
But I am a noob, and am watching this thread like a hawk (cause I am going to need to do it soon). Zach |
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