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Re: Classic 900 Engine Restoration Northern California  2 Saabers Like This Post!
Posted by Cmyles [Email]  (#1126) [Profile/Gallery]
(more from Cmyles) on Sun, 12 Jul 2020 16:13:34
In Reply to: Classic 900 Engine Restoration Northern California, Scott Paterson   [Profile/Gallery]
, Sun, 12 Jul 2020 15:40:21
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Any competent machine shop can do a B201 or 202 engine. As far as machining techniques and procedures there's nothing unusual about them. The catch is obtaining the parts. These engines are so rugged that in reality, unless you are building a race car engine, it makes more sense to get a lower mileage engine from a wreck, clean it up with a glaze-busting hone, install new rings and maybe new standard size bearings, check out the valve seats and guides, check out and the chain-guides and sprockets (most of that stuff will be just fine on a 150,000 engine that's been well maintained) and re-assemble it with new gaskets, seals and chain. The piston bores don't wear in these high nickel blocks. That's pretty much what I do and get excellent results. If you get one that actually needs the crank ground or oversize pistons fitted then just push it aside and get another one. The only oversized pistons I know of as available anymore are custom made forged pistons at about eight hundred bucks a set and the supply of good rod and main bearings is drying up now. Good rings are still available just don't hone any more than it takes to wipe off the glaze and use a bottle brush hone. Check out all the important dimensions on the pistons but they are almost always within spec. Never seen a bent or otherwise bad rod but have replaced a few wrist pin bushings.
I used to rebuild V4 engines too and the parts were available from both Saab and Ford for a long time but the B201 and 202 engines were all Saab and Saab is gone now. The rod, main and thrust bearings were unique to those engines but Saab used very high quality Vandervelle tri-metal bearings and they tend to last forever (unless the engine has been badly abused).
->Posting last edited on Sun, 12 Jul 2020 16:20:15.
, Sun, 12 Jul 2020 15:40:21, Sun, 12 Jul 2020 16:13:34 <-- Viewing This Message
2, Tue, 14 Jul 2020 14:57:13
, Wed, 15 Jul 2020 14:59:591
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