105 Headers Comparison/shootout! - Page 9 - Alfa Romeo Bulletin Board & Forums
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post #121 of 126 (permalink) Old 03-02-2019, 02:13 PM
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I have a set of original Shankle headers that are over 20 years old and have done 100k miles and despite the claims in the Ebay ad, they have not rusted. Mine are well made and I would recommend them. The 10 HP gain is compared to a stock one piece manifold.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
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A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #122 of 126 (permalink) Old 03-02-2019, 02:55 PM
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I have a set of original Shankle headers that are over 20 years old and have done 100k miles and despite the claims in the Ebay ad, they have not rusted. Mine are well made and I would recommend them. The 10 HP gain is compared to a stock one piece manifold.
Thats good to know Ed. and how do they compare the stock two piece manifolds?
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post #123 of 126 (permalink) Old 03-02-2019, 03:38 PM
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Conedriver... your post #102 comparative table...fascinating, and eyebrow-raising for many, I'm sure.

I read the notes at the end of the page.....and I'm hooked, I'd like to see is the next page or pages which would appear to offer sage advice on filters....and maybe more besides.
If you have more, I'd like to see it, and I suspect others would too.
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post #124 of 126 (permalink) Old 03-02-2019, 07:53 PM
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Thats good to know Ed. and how do they compare the stock two piece manifolds?
Probably not much difference. The longer primaries in the headers should help high rpm power compared with the stock 2 piece manifold. The stock manifold will probably be quieter.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #125 of 126 (permalink) Old 03-03-2019, 07:22 AM
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OK. It's a thread highjack, but here goes:

The U.S. Alfa club tech series for SPICA is a 170 page compilation of all of the newsletter articles from 1969 to 1993 as well as the factory SPICA manual, but is no longer available. Obviously I don't want to scan everything, but here are the pages for filters beyond what appears in my post #102.

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Conedriver... your post #102 comparative table...fascinating, and eyebrow-raising for many, I'm sure.

I read the notes at the end of the page.....and I'm hooked, I'd like to see is the next page or pages which would appear to offer sage advice on filters....and maybe more besides.
If you have more, I'd like to see it, and I suspect others would too.
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George Schweikle

1976 Spider (Dedicated Autocrosser, "SPICA, No Carbs")
1991 Spider Veloce (Retirement cruiser)
Scuderia Non Originale
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post #126 of 126 (permalink) Old 03-03-2019, 07:28 AM
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...oops, forgot a page...Now, back to the regularly scheduled programming
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George Schweikle

1976 Spider (Dedicated Autocrosser, "SPICA, No Carbs")
1991 Spider Veloce (Retirement cruiser)
Scuderia Non Originale
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