 Valve spring shifting around in head, Has anyone else seen this happen? New pics added |
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| reharvey |
 Jun 20 2012, 08:42 AM
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Senior Member  Group: Members Posts: 573 Joined: 16-July 08 From: N. E. Ohio Member No.: 9,308 Region Association: North East States  |
Was looking for a rebuildable 2.0 head in my pile of stuff and I came across this one with an issue I've never seen before. It looks like the base on the valve spring has been moving back a forth in the head. If you look at the first pic you can see the metal has been pushed up to make a ridge at one side. The second pick shows that the valve guide boss as been repaired and is smaller then normal. So--has anyone seen this happen before? What needs done to repair the damage to the head? Thanks, Ray
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| wingnut86 |
Jun 20 2012, 01:35 PM
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...boola la boo boola boo... Group: Members Posts: 1,053 Joined: 22-April 10 From: South Carolina Member No.: 11,645 Region Association: South East States |
Send it off to Len at Hoffman Machine or find a "Type 4" head specialist close by.
Valve guides that start to wear can cause this, add in the possibility of valve seats that have come loose or are wearing unevenly and you have this. Experts can weigh in but this has been my experience in aluminum heads so far. A rebuilder can build up that surface and machine to spec if not to "wallered out" Jake, Cap'n, McMark, Chris or Len?? |
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Posts in this topic
reharvey Valve spring shifting around in head Jun 20 2012, 08:42 AM
ldsgeek I'm not sure, but shouldn't there be a ste... Jun 20 2012, 08:52 AM reharvey These heads never came with washers under the valv... Jun 20 2012, 10:10 AM ldsgeek Ok, I was wrong about these. Sorry. It does make s... Jun 20 2012, 10:41 AM Katmanken I'm almost thinkin the spring and valve are at... Jun 20 2012, 01:46 PM McMark The seats could have been recut too far and allowe... Jun 20 2012, 02:16 PM reharvey The valve seat looks original and is in good condi... Jun 20 2012, 03:02 PM reharvey I added two more photos of my valve spring problem... Jun 21 2012, 08:40 AM
McMark Perhaps that spring lost tension... Jun 21 2012, 09:36 AM |
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