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Old 3 Days Ago
MessingWithMySAAB MessingWithMySAAB is offline
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Join Date: Aug 2017                                                
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My Saabs: '96 NG900 SE 2.0 turbo coupé, stage II
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Default Compression and cylinder heads

I recently bought a Volga 24 and as it turns out the head studs are corroded so much that the head is impossible to take off.
At the same time i also found out that Opel Omega gearboxes fit B204 blocks, how convenient.
So since my Volga needs a new engine i might as well B204 swap it.
The local wreckers have a B204i (non turbo) and they sell stuff for cheap so i thought i'd pick it up but the compression is 10.1/1 and since i'm going the turbo route that would mean detonation on high boost.
So on to my question: what changes compression in these engines (different head, pistons?) and also are the internals as strong as in the turbo engines.
And another thing, this being an old engine there's bound to be wear but would it being NA mean that the engine is in better health because of the lower power (less load)?
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Old 3 Days Ago
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jakejm79 jakejm79 is offline
Join Date: Sep 2010                                                
Location: Southern NH, USA
My Saabs: None at the moment
Posts: 12,718

The pistons are what makes the difference for compression, crank for displacement and rods are the same.

Maintenance (or lack of) and driving habits will have the biggest impact on engine wear regardless of turbo or not.

There shouldn't be a difference in strength for rods and crank (since they are used interchangeably between turbo and non turbo) but I don't thing the B204i has oil squirters that cool the pistons so you may want those if you convert to turbo.

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Last edited by jakejm79; 3 Days Ago at 10:28 PM.
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