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worn valve stem

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Post Options Post Options   Thanks (0) Thanks(0)   Quote GottaSki Quote  Post ReplyReply Direct Link To This Post Topic: worn valve stem
    Posted: November-08-2018 at 11:57am
huh..found my noise..

one of these things, is not like the other...


Anyone have a good used 1.45" 351W exhaust valve and a pedestal rocker laying about i can buy and compensate to put in a box?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeinNY Quote  Post ReplyReply Direct Link To This Post Posted: November-08-2018 at 2:36pm
I would be shocked if I didn't - what vintage are you working with there?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GottaSki Quote  Post ReplyReply Direct Link To This Post Posted: November-08-2018 at 4:27pm


Yay!
This is an '82 model year PCM Joe
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeinNY Quote  Post ReplyReply Direct Link To This Post Posted: November-08-2018 at 9:17pm
Sadly I found nothing, apparently the scrap yard got them, only factory ford heads I found on the shelf are 351m from 78 - and 289 heads from 65.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GottaSki Quote  Post ReplyReply Direct Link To This Post Posted: November-08-2018 at 9:23pm
Thanks for looking Joe!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote KENO Quote  Post ReplyReply Direct Link To This Post Posted: November-09-2018 at 6:21am
I figure you could get a new valve and rocker arm from a reputable outfit like Melling or Sealed Power just for a couple of examples, for around 20 bucks total through about any local auto parts store, so why go used?

Maybe a little more with that CT state tax thrown in.   
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeinNY Quote  Post ReplyReply Direct Link To This Post Posted: November-09-2018 at 8:06am
Originally posted by KENO KENO wrote:

I figure you could get a new valve and rocker arm from a reputable outfit like Melling or Sealed Power just for a couple of examples, for around 20 bucks total through about any local auto parts store, so why go used?



You have to be careful letting new parts into your engine, they are like shots of Tequila, once you let in one new part next thing he sneaking friends in pretty soon you have aluminum heads, a cam, and an intake on a perfectly good engine. Better just to never open the parts book up.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GottaSki Quote  Post ReplyReply Direct Link To This Post Posted: November-09-2018 at 9:54am
Originally posted by JoeinNY JoeinNY wrote:

Originally posted by KENO KENO wrote:

I figure you could get a new valve and rocker arm from a reputable outfit like Melling or Sealed Power just for a couple of examples, for around 20 bucks total through about any local auto parts store, so why go used?



You have to be careful letting new parts into your engine, they are like shots of Tequila, once you let in one new part next thing he sneaking friends in pretty soon you have aluminum heads, a cam, and an intake on a perfectly good engine. Better just to never open the parts book up.


Well said Joe, Believe me, my 'head ' is spinning, GT40P, Flo-Tek, AFR, P38,...


Best I keep the turd polish in the bottle

Yeah Ken, that may be just what to do


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Post Options Post Options   Thanks (0) Thanks(0)   Quote SNobsessed Quote  Post ReplyReply Direct Link To This Post Posted: November-09-2018 at 11:33am
What would make 1 stem wear so much faster than the others? A bad lifter?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: November-09-2018 at 11:54am
Originally posted by GottaSki GottaSki wrote:

Originally posted by JoeinNY JoeinNY wrote:


You have to be careful letting new parts into your engine, they are like shots of Tequila, once you let in one new part next thing he sneaking friends in pretty soon you have aluminum heads, a cam, and an intake on a perfectly good engine. Better just to never open the parts book up.

Well said Joe, Believe me, my 'head ' is spinning, GT40P, Flo-Tek, AFR, P38,...

Yes, you do need to be careful with your thinking as Joe mentioned. Pretty soon he'll have you thinking towards something like this:





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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeinNY Quote  Post ReplyReply Direct Link To This Post Posted: November-09-2018 at 11:55am
Originally posted by SNobsessed SNobsessed wrote:

What would make 1 stem wear so much faster than the others? A bad lifter?


I suspect Tom either knows or will know when he takes it apart -

Could be a material defect somewhere,, rocker, valve stem - ear starts and once you aren't pushing polished surfaces things start go bad.. but not likely

Could be lack of oil through the pushrod serving the rocker worth checking the lifter and the pushrod,

Or either the rocker sticks/has stuck at one point or the valve sticks/has stuck at one point .
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GottaSki Quote  Post ReplyReply Direct Link To This Post Posted: Today at 10:38am
Almost embarrassed to say, its Its made noise since i acquired it. ..Two decades ago.

but this its the first year I committed to taking it apart

Appears no more collateral damage other than the affected pieces
expected a worn cam lobe, but not this.
I suspect a bad lifter started the issue,
But it will get a new Cam and lifters, maybe p heads, or just the valve and rocker, not sure yet. heavy budgeting post divorce and kid still in college
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