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Classic/Antique Car Repair/46 Ply Whine - Timing Chain?
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Question
10K miles on '46 Plymouth rebuild, stock 218, engine suddenly last week developed engine-area whine that increases with RPM. Removed fanbelt to isolate water pump and generator, and whine still there. Gears, chain new with last rebuild. What is likelihood is not the timing chain -- can't think of what else would create a rotating whine. Could oil drip to chain area have failed to cause this?
You are testing the old gray matter that is slowly turning into mush inside my skull. But here goes. If I remember right the thrust plate behind the cam gear can be installed backwards. It has grooves cut into one face, the face that must be installed towards the cam not the gear in order to allow splash oil from the front cam bearing to run out onto the crank gear and the timing chain. I have seen these plates installed backwards. Just a thought.
Brad
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| Rating(1-10) | Knowledgeability = 10 | Clarity of Response = 10 | Politeness = 10 |
| Comment | Brad -- Stumps everyone...found that it was simply the crank shaft hub whining on the timing chain cover seal...put some oil on the shaft and the whine went away. | ||
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Answers by Expert:
Brad Sears
Expertise
All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.
Experience
Automotive tech instructor.
Syndicated auto columnist 1970's though the early 1990's.
Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's
TV Show "Last Chance Garage" 1980's PBS-TV syndicated.
Auto instructor for the following companies:
Fram
Autolyte
Holly
Carter
AMF
Ford Motor
University Of Conn
Blue Hills Technical School
Sugar River Technical Center
Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.
Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.
Education/Credentials
More than I care to remember.
Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.
Awards and Honors
Moto Award winner. And much more.
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