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 Fixing Oil Leaks on My Hornet
Engine Rebuilding Just finished fixing some oil leaks on my Hornet. Its an original 84,000 mile engine and it was leaking more oil than it burnt. When looking under the running car I could not isolate the oil leak down to on specific thing so I decided to replace the oil pan gasket the oil pump gaskets and the tranny gaskets as well due to to a small leak there.

The cover of the oil pump had oil pooling on the bolts which led me to believe the cover gasket was gone. The same for the oil pan on the hydramatic when fluid pools and drips from the bolts you can safely bet the gasket is gone.

First item was to get the car jacked and up on wheel stands. This is nice and safe and gave me room to work. I must note that taking a oil pan off a Hudson on wheel stands is an operation that requires lots of patience. The manual says drop the center pivot steering assembly and the pan will come off no problem. This of course absurd information as the pan will not clear the crank and front number 2 cross member if you don't jack the engine. This is the procedure:

Get the car up on wheel stands and nice and safely off the ground. Never get under a car that is not securely elevated. unhook the battery, drain the oil from the pan and remove the dip stick. Take the three bolts out of the center steering pivot and carefully pull it back and drop it down. Now remove all of the pan bolts which requires extreme patience as some are up under the #2 cross member so you have to wiggle you hands in here. After the bolts are all removed you have to remove the nuts from the engine mounts and by placing a cut to size 2x8 on the jack position this under the harmonic balancer and slowly and very carefully jack up the engine, single pumps then look under hood to see if engine has broken loose from mounts. When engine mount bracket is at top of mount bolt you should be good. Now carefully get under and wiggle pan free. Now carefully drop engine back down. Remove old gasket from block and clean the surface so its free of oil and residue. Throughly clean the pan making sure to remove all crud and sludge from bottom of pan. Prep pan by cleaning gasket surface throughly. I used the replacement gaskets I got from Dale Cooper his site is in our links section. They are a good quality cork gasket that comes in 4 pieces. I used a good quality gasket prep to put the gasket on and covered the joints with prep to provide a good seal.

Before I put the pan back on I pulled the oil pump. Thats when I found out I had been very lucky. The gear was pretty close to failing. If you look in the gallery under Hudson Parts you will see the old gear. This is a OEM brass gear that came with the car when new. These are notorious as a weak spot on the Hudson and when rebuilding an engine or doing repairs like this should be replaced with a bronze gear you can get from Russ Maas(links section). Jack Clifford advised owners to change the brass OEM gear every 40,000 miles. The bronze gear will last the life of your engine. This small item if it fails will destroy the bearings in your car and generally ruin your day. So spend the $65 and save your engine. I pressed out the old gear and installed a new one. The cover seal was either the wrong one or it was compressed. I favour the last owner put in the wrong gasket as the gasket I found inside had the correct diameter but it was not thick enough to seal the cover. I replaced this with one from Dale Cooper and put the pump back together and installed it with a new gasket onto the engine. I replaced the pan which was a real pain as I had to jack the engine again and wiggle the pan past the crank. Putting in all the bolts and torquing them down took a while.

I then replaced the tranny pan gasket which was much easier due to the fact the tranny pan is exposed and easy to get too. End result is I got rid of the leaks and found out that doing this work on the ground is insane. But what are you going to do? my garage is not big enough for a lift. I have all of the right tools but having the car on wheel stands and doing this work on my back took a trivial job and made it a chore. Still all-in-all I love working on Hudsons. The inside of the engine was clean and sludge free. Everything looked nice. I can now drive it a little more before I pull the engine and do a complete overhaul.
Posted by 51hornet Tuesday, October 11, 2005 (01:07:26)
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