You are looking down into the block of an overbored 1.7 litre Ford/Saab V4 engine that I'm rebuilding in my shop. You can see new balance shaft bearings, a new steel timing gear, and the fully balanced crankshaft. You can't see it because of its small size, but "BB3415" is stamped into the crankshaft. That indicates that the balance shop--Bert Beck Custom Engines--has recorded this crankshaft as the 3415th crankshaft they have balanced over the years. By now, they know what they're about!
These are the main bearing caps and their retaining bolts. All the parts have been meticulously cleaned. New main bearings are installed and the clearances checked with Plastigage. Average bearing clearances are 0.00175"---I make a "map" of all engine clearances a part of my records, and give the customer a copy as well.
The main bearing caps are installed and torqued to factory spec [72 ft/lb]. You can't see it here, but I install the rear main bearing seal as I install the rear cap. That assures a proper "fit" of the seal, with no chance of damaging the seal when it is fitted. You can see from the photos that the engine is VERY clean. That's the way I want it when I rebuild an engine.
City Car Design
6 years ago