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325 Poly rocker arm resurfacing.
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local2Ed
Posted 2020-03-31 2:41 PM (#596293)
Subject: 325 Poly rocker arm resurfacing.


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1957 Dodge Sierra 325 poly engine.

Some of my rocker arms, intake and exhaust, show some wear from the valve stems. 

Can these be resurfaced? 

Are these a hardened surface?

Anybody know the best way to do them?

One machine shop told me it can be done with a 4.5" grinder and a flap disc.

Anybody ever do this? 

Thanks.

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Powerflite
Posted 2020-03-31 2:54 PM (#596294 - in reply to #596293)
Subject: Re: 325 Poly rocker arm resurfacing.



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Yes you can do that as long as you don't go overboard. Take off as little as possible. It is best to use adjustable pushrods afterward.
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57chizler
Posted 2020-03-31 3:06 PM (#596297 - in reply to #596293)
Subject: RE: 325 Poly rocker arm resurfacing.



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In order to correctly resurface the valve stem contact pads, it has to be done so that the degree of arc and parallelism are maintained; kinda hard to do freehand by eyeball.

http://www.rockerarms.com/
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local2Ed
Posted 2020-04-01 8:30 AM (#596325 - in reply to #596297)
Subject: RE: 325 Poly rocker arm resurfacing.


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57chizler - 2020-03-31 3:06 PM

In order to correctly resurface the valve stem contact pads, it has to be done so that the degree of arc and parallelism are maintained; kinda hard to do freehand by eyeball.

http://www.rockerarms.com/


Thanks for the link.
I'll have to give them a call when I'm ready.
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mikes2nd
Posted 2020-04-01 2:37 PM (#596338 - in reply to #596293)
Subject: Re: 325 Poly rocker arm resurfacing.


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couldn't you find new ones? low mileage?
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local2Ed
Posted 2020-04-04 3:27 PM (#596437 - in reply to #596338)
Subject: Re: 325 Poly rocker arm resurfacing.


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mikes2nd - 2020-04-01 2:37 PM

couldn't you find new ones? low mileage?


The places like Rock Auto and Napa that show they have them don't appear to be the correct one's for a 325 cuin. Poly engine.

I didn't post here looking for good used ones or contact Big "M" because I haven't been able to get to looking at all of them closely and getting an accurate count of what I need.

I haven't called the above link yet.
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