Throttle plate stuck 87 auto
04-04-2016, 12:05 AM
#16
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04-04-2016, 08:08 AM
#17
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Location: Adirondack Mountains, New York
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If the throttle body is not serviceable as is, there's no harm in trying to squeeze it back into roundness. Ideally, you'd want a pressure gage on your hydraulic press so you could sneak up on the required pressure. Perhaps you could suspend a weight on the handle, moving it outwards after each attempt.
Due to work hardening, it won't go back exactly, but you have the perfect gage to judge it - the throttle plate. If you crack it, I think you'll know, but it might be wise to do fluorescent penetrant inspection.
Probably won't work, but if it does, you can brag about it the next time you're in Cuba.
To those horrified by this suggestion, a story: While working to find out the cause of bad microstructures in turbine vanes made of a very specialized material, I visited a shop that did the final machining. I was shocked to find out that they would bend the trailing edge of the airfoil straight, drill straight cooling holes (by EDM - which with some trouble can drill curved holes), then bend them back. This was not the source of the problem, so we let them continue doing it this way.
Due to work hardening, it won't go back exactly, but you have the perfect gage to judge it - the throttle plate. If you crack it, I think you'll know, but it might be wise to do fluorescent penetrant inspection.
Probably won't work, but if it does, you can brag about it the next time you're in Cuba.
To those horrified by this suggestion, a story: While working to find out the cause of bad microstructures in turbine vanes made of a very specialized material, I visited a shop that did the final machining. I was shocked to find out that they would bend the trailing edge of the airfoil straight, drill straight cooling holes (by EDM - which with some trouble can drill curved holes), then bend them back. This was not the source of the problem, so we let them continue doing it this way.
04-04-2016, 08:17 AM
#18
Rennlist Member
Thread Starter
If the throttle body is not serviceable as is, there's no harm in trying to squeeze it back into roundness. Ideally, you'd want a pressure gage on your hydraulic press so you could sneak up on the required pressure. Perhaps you could suspend a weight on the handle, moving it outwards after each attempt.
Due to work hardening, it won't go back exactly, but you have the perfect gage to judge it - the throttle plate. If you crack it, I think you'll know, but it might be wise to do fluorescent penetrant inspection.
Probably won't work, but if it does, you can brag about it the next time you're in Cuba.
To those horrified by this suggestion, a story: While working to find out the cause of bad microstructures in turbine vanes made of a very specialized material, I visited a shop that did the final machining. I was shocked to find out that they would bend the trailing edge of the airfoil straight, drill straight cooling holes (by EDM - which with some trouble can drill curved holes), then bend them back. This was not the source of the problem, so we let them continue doing it this way.
Due to work hardening, it won't go back exactly, but you have the perfect gage to judge it - the throttle plate. If you crack it, I think you'll know, but it might be wise to do fluorescent penetrant inspection.
Probably won't work, but if it does, you can brag about it the next time you're in Cuba.
To those horrified by this suggestion, a story: While working to find out the cause of bad microstructures in turbine vanes made of a very specialized material, I visited a shop that did the final machining. I was shocked to find out that they would bend the trailing edge of the airfoil straight, drill straight cooling holes (by EDM - which with some trouble can drill curved holes), then bend them back. This was not the source of the problem, so we let them continue doing it this way.
04-12-2016, 09:52 PM
#21
Rennlist Member
Thread Starter
Problem solved. Got one for $50 from 928intl.
Cleaned it up and cut out the old bearings. When I was putting in the new bearings all I could think was, "how am I going to explain this if I f@ck it up again?!"
New bearings are in and the plate moves freely.
Thanks again!
John
Cleaned it up and cut out the old bearings. When I was putting in the new bearings all I could think was, "how am I going to explain this if I f@ck it up again?!"
New bearings are in and the plate moves freely.
Thanks again!
John