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In this Discussion
- Geoff C., N.Z. October 2012
- StillOutThere October 2012
- SuperDave October 2012
- Tallent R October 2012
202 Race camshaft
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Over on the Inliners board, I was referred to a book to read. (Hudson Performance Portfolio) I went to Amazon and looked it up. I recoginized the cover. I went to my library of Hudson books and there it was. It had been a gift from a friend when I had helped to rebuild his /6. I read the parts about the Jet. In reading I found a part # for a race camshaft that was made for the 202. A article talks of preparing a Jet engine for Fonty Flock using this camshaft. The cam was a Hudson cam. Part # SU 309777. Does anyone out there have one of these camshafts? Does anyone have the specs. for this cam? I would be interested in either or both. Thanks L Hud
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It is not practical to cut a camshaft to 55 year old specifications because cam profile technology has improved more than any other part of the internal combustion engine. Go to a good cam grinder, describe your motor in detail from induction to exhaust including compression ratio, piston top design, valve size, bore, stroke. Let him design a new cam that will be superior to any original and probably give you better mileage to boot.
A cam change doesn't upgrade a motor. The upgrades are done to the motor FIRST and the cam designed to get the most out of it. -
The camshaft on the 202 was radically different from any previously used by Hudson as far as overlap was concerned. I'm not an expert by any means on cams, but I had the cam re-profiled on my '29 Hudson and immediately got at least a 20% boost in power output, and also a 20% improvement in fuel economy - from 14 to 18 m.p.g. on a two-ton car. the cam expert said even greater improvements could be had by building up the cam, and also increasing the compression ratio. But getting back to the 202, I get great performance from my Jet liner, with 26 m.p.g.If you're stuck in a hole, stop digging.
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That part number is in the 48-54 master parts book. listed as "SU" Meaning severe use. I didn't know that Hudson Made SU parts for the Jet. I learn sumpthin' new every day!
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There were some SU parts for the Jet because they had applications for the Italia models which there was some intent of Euro road racing --- which never happened to my knowledge.
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They also had police car aplications. The 6 volt alternator listed in the 48-54 parts book is only listed for the Jet,
RogerRetired Tech.
