Sunday, January 16, 2005

Piston Install, Part II

Yesterday, we got all the pistons, timing chain cover, oil pan and oil filter adapter installed. The loaner ring compressor from Auto Zone worked great. The biggest problem we had was reading piston numbers wrong and installing the #4 piston in the #1 cylinder, but we caught it right away. The motor is tight, tight, tight -- it took both of us to turn the crank once four pistons were in. The 390 is starting to look sweet, can't wait to hear it crank up.


At 7:32 PM, Blogger inthewrongline said...

It should NEVER take more than one person to turn that thing over, you have a SERIOUS problem!!!!
My guess is that you have the rods installed wrong, please stop now, and pull each piston/rod assy. and inspect to ensure that each rod is correctly oriented to the chamfered radius on each journal shoulder.
note that the outer edges of each journal is not cut square, but tapered, thus increasing the strength of the crank, now look at each rod with the bearing installed and you will notice that it sits offset in the rod end. that is to clear the radius cut into each journal. when you put them in backwards you 1: are clamping down on the radius 2: forcing the rods together, thereby guaranteeing immediate engine failure!!! Please stop now and take the time to familiarize yourself with the engine you are working on,a $20 engine book for the F E will go a long way in helping you avoid the time consuming and costly heartbreak of re-doing the whole thing over again!

At 8:44 PM, Blogger Dan said...

Actually, it turns over great. The problem was that we were trying to turn it just using the harmonic balancer. Once we put a torque wrench on it, you can turn it with one finger.


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