51 Dodge Posted April 4, 2004 Share Posted April 4, 2004 I'm rebuilding my first Buick 350, the rear seal, which is a rope, binds up the crankshaft when the caps are torqued down. It was installed correctly and I figured it would loosen up eventually, but now that I have all the pistons and connecting rods attached it takes a mountain of force to turn the crank. Is this a problem? The starter is going to have a hell of a time getting it started the first time.Jeff Link to comment Share on other sites More sharing options...
Bill Stoneberg Posted April 4, 2004 Share Posted April 4, 2004 Jeff,If you do some searching you can find a neoprene seal for that car. That would be the way I would go if it was my engine.I dont like the rope seals.My catalogs for the newer Buicks are at work right now, but I will look later and see and get you a part number. Link to comment Share on other sites More sharing options...
JohnD1956 Posted April 7, 2004 Share Posted April 7, 2004 If you know the seal is correctly installed, check the bearing. I only did this once in a 65 nailhead engine, so I could be wrong, but I would not think any binding is acceptable. Plus that seal has nothing to bind against. It just sits in place in it's groove, so maybe the bearing is in upside down? Link to comment Share on other sites More sharing options...
pphil Posted April 7, 2004 Share Posted April 7, 2004 i got the same problem (or concern)rebuilding a 425 nailhead the rear seal is a rope seal and it seams to make everything real tight.i know my bearings are in right.is this normal or not?scott1964 wildcat 425 2-4bbls 4-speed(going back together finally ) Link to comment Share on other sites More sharing options...
Bill Stoneberg Posted April 7, 2004 Share Posted April 7, 2004 Poston, in Alabamba (1 800 635-9781) have the neoprene seals for the rear main seals for most Buick V8's. Link to comment Share on other sites More sharing options...
51 Dodge Posted April 8, 2004 Author Share Posted April 8, 2004 The crank turned nice and smooth until I put the rear seal in. Its definately the seal. I found a website for neoprene Buick seals, I might just try one.http://www.taperformance.com Link to comment Share on other sites More sharing options...
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