Re: cross check epc picture saab vs GM engine. - Saab General Bulletin Board - Saabnet.com
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Re: cross check epc picture saab vs GM engine.
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Posted by Snowmobile [Email] (#686) [Profile/Gallery] (more from Snowmobile) on Tue, 29 Oct 2013 06:43:40 Share Post by Email
In Reply to: cross check epc picture saab vs GM engine., pete [Profile/Gallery] , Mon, 28 Oct 2013 20:08:01
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epc and wis links were posted recently a few threads below, so you could probably do this... but...

from an engineering perspective, just because the pictures look the same does not mean the parts are the same! A picture is not an engineering drawing, so I don't know how you can tell they are the same without all the information that comes on an engineering drawing. "Small" things might be different: dimensions, tolerances, material specifications. Any one of these things being subtly different can make the part so different it will not work, or maybe will appear to work, but not in all circumstances, possibly with dangerous failure modes.

The only way to know 2 parts are the same without the drawing is if they have the same part number (eg stamped on them). Sometimes there are multiple part numbers for the same part, so you would need to cross link those in some way, which would involve getting to the source if it is a tight tolerance sort of part anyway (like most engine parts)... less of a problem for more generic things (eg exhaust parts)...

As Jimmy points out, if your engine is going strong right now, just take care of it and cross that bridge when you come to it. Most likely, something else serious will break first (you could hit a deer, or the car could rust, or the tranny could go out)... why hoard parts you don't need? just get spares of the common failures...

->Posting last edited on Tue, 29 Oct 2013 06:46:41.

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