derf wrote:az chip wrote:derf,
I have a 401 fresh off the farm with the flywheel attached. want me to measure mine?
That would be perfect. I need the measurement from the mounting surface of the bellhousing to the mounting surface of the flex plate/flywheel so it would be best if you can take off the flywheel to measure it.
The distance between the two thin lines in my very crude drawing is what I'm looking for. Imagine that the thick lines are the back of the block and the crankshaft sticking out.
Didn't get far enough tonight to put the crank back in. Should be there tomorrow so I'll see if I can get a measurement for ya.
Tonight ended with poor results so I'm a little down. After the classroom portion we headed to the shop. Honing the cylinders only took a few minutes but wiping down the cylinders to get the slurry out took longer. While I was working on that the other students on my team(?) We're working on pulling the heads apart. Everything goes slow as the class is huge, tools are shared, and only one instructor unless we bother the performance guy who has his own class to teach.
I finally got it all cleaned and went to check the rings. All I can say is the rings (and/or the cylinders?) are beyond spec. Most are between 31 and 35 thousandths. That's about 10 thousandths too much.
So... With that in mind I guess I'll throw in the towel for now. We can put the motor back together enough to get credit for the class. I won't use any gaskets etc and won't even torque stuff down. Hopefully in the near future I'll have money and can do a full, correct rebuild. Have it bored 30 over, all new bearings, etc. For now though the money and time just isn't there.
Thank you everyone for the advice and support. This will be revisited.
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