 chromoly pushrod clarification |
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| r3dplanet |
 Jul 15 2021, 11:51 PM
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#1
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Senior Member  Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None  |
So the latest chapter on my shop-botched engine rebuild is that I found more leaks from more pipe threads that replaced the freeze plugs. Something that both the machinist and the engine builder completely failed to notice.
While taking things apart to get to the pipe fittings I discovered that the builder installed my provided chromoly pushrods (push rods? (sp?)) but failed to install the 911 swivel foot adjusters. The engine is an EA code 1.7 liter from 1973 w/rebuilt heads that have stainless valves. It's a 1911 now with a Webcam 86. Is this a problem? Chromoly pushrods with stock adjusters? Or should I dive in there and swap out the adjusters? Thanks! |
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| Mark Henry |
Jul 16 2021, 07:16 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Swap them, the main reason for adjusters is stainless steel valves don't have hardened tips (or as hard) and they tend to mushroom over time.
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| r3dplanet |
Jul 16 2021, 12:21 PM
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#3
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Senior Member Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None |
I'll swap them today. Thanks!
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| rfinegan |
Jul 16 2021, 05:35 PM
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#4
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Senior Member Group: Members Posts: 1,039 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region 
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Have your rockers been modified for the installation of the 911 swivel adjusters? They are not just a drop in and go...
Best -Robert |
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| euro911 |
Jul 16 2021, 08:01 PM
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#5
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,860 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California
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1.7L rockers modified for the 911 swivel feet, then the geometry needs to be determined before the push rod ends are cut to size
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| r3dplanet |
Jul 18 2021, 09:23 PM
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#6
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Senior Member Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None |
Thank you fellas.
It's all been so long since the initial machine work was done I just don't remember any more. I remember it came up but foggy now. Anyone have a write up on what modified rockers should look like? Photo? -m. |
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| warpig |
Jul 18 2021, 11:13 PM
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#7
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Member Group: Members Posts: 290 Joined: 2-August 10 From: Portland OR Member No.: 12,002 Region Association: Pacific Northwest
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| r3dplanet |
Jul 19 2021, 05:39 PM
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#8
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Senior Member Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None |
Neat. Who did the work?
QUOTE(warpig @ Jul 18 2021, 10:13 PM)  |
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| warpig |
Jul 19 2021, 06:53 PM
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#9
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Member Group: Members Posts: 290 Joined: 2-August 10 From: Portland OR Member No.: 12,002 Region Association: Pacific Northwest
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Got them done by a guy over on the Samba. bugguy1967
I will PM you his # |
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| Mark Henry |
Jul 20 2021, 07:41 AM
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#10
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
When done you may have to shorten the PR's, don't panic, a good machinist can chuck them in a lathe and undercut the tubes. Then hammer the tips in and you're good to go.
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