 1.7 Rocker Install on 2258 with 2.0 heads, HD Aluminum vs Chromoly push rods - swivel foot adjusters - valve lash caps |
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| Robroe |
 Sep 5 2026, 04:30 PM
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Member  Group: Members Posts: 79 Joined: 10-August 21 From: Wenatchee, WA Member No.: 25,793 Region Association: Pacific Northwest  |
Building 2258 from 1.7 for 73 914. 96 mm cylinders, 78mm stroke, Web Cam Raby 2500 grind, Hoffman/Raby 2.0 heads. Installing valve train now. Valve stems have .077 thick lash caps. Rockers are 1.7 liter version. I’m planning on ordering oem 911 swivel foot valve adjusters. Planning to use HD aluminum push rods although I had considered chromoly and was advised against them due to coefficient of expansion. Have adjustable push rod on the way for proper geometry adjustment. Not sure if (or how much) grinding from rocker arm bottoms will be required to allow for proper movement of swivel foot. Also need to discover whether valve stem lash caps should be used with swivel foot adjusters. And if I’ll need to shim rocker arm mounts to achieve proper half lift geometry. So I’ll, report as I go. Any advice for me?
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| 914Sixer |
Sep 5 2026, 05:22 PM
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914 Guru Group: Members Posts: 9,562 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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Rocker arms have to be machined. Use 2.0L arms with 10mm harded steel swivel feet. Will post picture up tomorrow.
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Posts in this topic
Robroe 1.7 Rocker Install on 2258 with 2.0 heads Sep 5 2026, 04:30 PM
914werke Sorry Mark stole your thunder.. :)
Why lash caps?
... Sep 5 2026, 08:24 PM
cgnj @[url=http://www.914world.com/bbs2/index.php?showu... Sep 5 2026, 08:29 PM |
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