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Thread: PORSCHE or reproduction heat exchangers - which are these?

  1. #1

    PORSCHE or reproduction heat exchangers - which are these?

    Can anyone tell if these MFI exchangers are PORSCHE or reproduction...no part numbers or other nomenclature stamped anywhere. Will be looking to sell them and want a good basis of cost since the price of reproductions is way less than the PORSCHE part. Thank you.
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  2. #2
    Member #226 R Gruppe Life Member #147
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    They aren't SSI, as all 6 Allen nut holes are in place.

  3. #3
    Quote Originally Posted by gled49 View Post
    They aren't SSI, as all 6 Allen nut holes are in place.
    Yes...these are NOT stainless and I believe all of the SSI offerings were stainless - but perhaps I'm wrong. These are painted steel.

  4. #4
    To the best of my knowledge all OEM exchangers had a slightly raised portion where the flange contacted the exhaust gasket, but then again I've never seen aftermarket ones with the 73 hot air box that drew air from the engine bay via the air tube thru the side sheet metal piece.
    Early S Registry member #90
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  5. #5
    Quote Originally Posted by edmayo View Post
    To the best of my knowledge all OEM exchangers had a slightly raised portion where the flange contacted the exhaust gasket, but then again I've never seen aftermarket ones with the 73 hot air box that drew air from the engine bay via the air tube thru the side sheet metal piece.
    Thank you Ed - and yes, these do indeed have the raised flange surface you mention. With that and your other comment, perhaps these are indeed PORSCHE pieces.

  6. #6
    Senior Member
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    They may be Porsche pieces but not pieces that originally came on a '73 . The original heat exchangers until '74 had an additional weld on the pipes between the shrouding and the trident . The allen bolt holes were also different . I don't know of a way to differentiate between a later Porsche heat exchanger and some of the aftermarket ones .

  7. #7
    Thank you all...the Hershey Porsche Flea Market is coming up in April...will see what the market yields .

  8. #8
    Quote Originally Posted by Richy View Post
    They may be Porsche pieces but not pieces that originally came on a '73 . The original heat exchangers until '74 had an additional weld on the pipes between the shrouding and the trident . The allen bolt holes were also different . I don't know of a way to differentiate between a later Porsche heat exchanger and some of the aftermarket ones .
    Another data point: My '73 heat exchangers, which I would have guessed to be original, also do not have these pipe butt welds. I have seen them on earlier parts, just not on '73s with that year's hot air box ducting. I suppose both you and I could have the Dansk repos that have been available for many years, as they don't have these welds either, but they seem to stamp their name on their products if the Dansk muffler I bought is any guide.

    I was in the process of prepping my heat exchangers for paint, but they will still end up with some visible light pitting when I'm done. If yours are truly like new, I may be interested in them. I can't quite tell from your photo, is there some shallow dents in the bottom of the right side clamshell? Any other issues that can't be seen in the photos?

    Thanks,
    Rory

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