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Hudson Motorcar: Engine Rebuilding

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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.
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Posted by 51hornet Tuesday, October 11, 2005 (01:07:26)

 Guide to the Hudson 7X engine

Engine Rebuilding Many of us Hudson owners are preparing to rebuild our engines, or are in the process of rebuilding our engines. Most of us know of the Hudson racing heritage and the engine project designated 7X. In an ongoing project I am trying to document the actual specifications for the 7X build and list suppliers where you can get the components to complete the build.

308 Engine factory Stock

The standard factory 308 for 1951-52 has a 3 13/16" bore and a 4 1/2" stroke and with the Cast Iron head has a compression ratio of 6.7-to-1 and with the Aluminum head 7.2-to-1. The inlet valves are 1 13/16" and the Exhaust is 1 9/16" This combo delivered 145 hp with the standard single WGD Carter 2 barrel carb.

For 53-54 the cast iron head was 7.0-to-1 and the aluminium was 7.5-to-1 engine specs were the same but the Twin H dual carb manifold was introduced which raised the horsepower to 170 for the Twin H and 160 for single 2 barrel.

The true 7X factory to dealer option had the same specs except the engine block was machined around the valves to create a relief to produce the venturi effect. The port area was hand finished by the factory race team. The valves were bigger, the inlet was 2" and the exhaust were 1 11/16" the head options were a reworked 232 head in either iron 8.7-to-1 or aluminum 9.2-to-1. This engine was only offered with Twin H and delivered 210 hp. The pistons were a special knurled type and had a chrome compression and oil ring. The head bolts were 1/2" studs with special thick washers to hold the head gaskets. The exhaust was a tuned dual outlet manifold.
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Posted by 51hornet Saturday, July 23, 2005 (02:27:02)

 Rebuilding My 308

Engine Rebuilding Right now I am in the collecting parts phase of my project. I decided to take the plunge and rebuild my 308. The rear seal is leaking so I decided to add more work and do a complete rebuild.

While I am at it I will do a mild 7x upgrade as well. I am going to get the block milled to add the larger stainless steel valves and have the block relief done.

As I complete the work I will keep updating here or in the forum.

51hornet

Posted by Anonymous Wednesday, April 20, 2005 (00:10:19)

 
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