Re: the blocks are different, - Saab 900 Bulletin Board - Saabnet.com
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Re: the blocks are different,
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Posted by Justin VanAbrahams [Email] (#32) [Profile/Gallery] (more from Justin VanAbrahams) on Wed, 6 Feb 2013 10:26:01 Share Post by Email
In Reply to: Re: the blocks are different,, Landjet [Profile/Gallery] , Wed, 6 Feb 2013 08:48:02
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The B engine died in '80. It was all wacky, with a jackshaft driven distributor and water pump and a starter under the exhaust manifold and all that crazy stuff. In '81 we got the H motor, with the cam driven distributor and belt driven water pump we've all come to know and love - but it kept the starter under the exhaust manifold. In '84 (virtually *positive*) they revised the h-motor design and moved the starter to under the intake manifold. Moving the starter was part of the introduction of the 16v DOHC head, and Europe got the 16v a year earlier. Thus, fairly certain the '84 8v cars had the starter under the intake. Finally, for '86 they revised the combustion chamber (head and piston).

The H block is essentially the H block from beginning to end - '81 to '93. The actual casting changed little. The end plates (with starter location) and timing gear (for DOHC) and all that changed a few times, but by and large the differences are all bolt-on.

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