January 27, 2019 at 3:45 pm #14439
I have been studying the parts book and found that it shows a different part number for the short tie rod ends between power steering and manual steering. I have an NOS one for P/S and a set of low mile ones from a M/S car. I can see no difference of any kind. Does anyone know what the difference is?
I also found that the automatic flywheel is specific to the Jetfire. Does anyone know what this difference is? The damper plate is for sure different but not sure what it would be on the flywheel. Both Cutlass and Jetfire both had the flywheel balanced before assembly so it can’t be a balance difference.
Any thoughts?January 29, 2019 at 2:58 pm #14440
The difference in the flywheels could be weight? I have heard that flywheels will vary from about 26# all the way down to about 20#. Weigh a couple of yours and see if there is a difference. I have several and will weigh them when I can get them out. The F-85 automatic flywheels are different part numbers in my 1963 parts book for a 2bbl and 4bbl set up and I think it is weight.
You must be logged in to access attached files.January 29, 2019 at 4:05 pm #14442
The only one I know for sure is a real Jetfire auto flywheel is in my automatic car. The engine I got from Ken I would assume has one from a Jetfire but not sure. I just sold my last Cutlass engine so I don’t even have a known Cutlass version. I would assume weight also, Just wonder if the Jetfire would be the lighter of the two to allow it to rev quicker.January 29, 2019 at 6:53 pm #14443johnsageParticipant
I have 2 flywheels. One is an automatic and weighs 19 3/4 lbs. The other is a manual and weighs just over 32 lbs. It is drilled for my 10 inch clutch. I think it came out of a 63 4 speed Jetfire that I parted out. If I remember right I got it back from a friend I sold it to originally. I think I’ll check, it seems pretty heavy.January 29, 2019 at 7:25 pm #14444
John, Is your automatic flywheel out of a Jetfire?
I have an extra Jetifre 10 inch manual flywheel but don’t have the clutch disc and pressure plate for it. Not sure I would ever find those to match the flywheel.January 30, 2019 at 7:49 am #14445johnsageParticipant
I can’t say for sure the automatic flywheel is out of a Jetfire but all my cars have been Jetfires, so I assume it is. I do have a known automatic Jetfire flywheel but it’s somewhere in my garage which is full of winter stored equipment.January 30, 2019 at 8:50 am #14446
I could have my history wrong but I do believe all manual transmission flywheels for a Jetfire are set up for the 10″ clutch. All other non-Jetfire manual transmission flywheels are set up with 9-1/2″ clutches, so Jetfire manual transmission flywheels should be easy to identify. I do not know how to tell the automatic transmission flywheel’s original application. I do believe that Dan LaGrou, D & D Fabrication, could answer this question.January 30, 2019 at 6:23 pm #14452
I have now weighted my extra flywheels and added them to a chart with the 1963 parts manual listings. I now noticed that the 1963 4bbl and 1962-3 Jetfire automatic transmission flywheels are the same part number. My non-Jetfire manual transmission flywheel is 2# heavier than the probable Jetfire flywheel John Sage has. Not a surprise, as the flywheel for the 10″ Jetfire clutch has a slightly thinner lip to allow room for the clutch pressure plate mounting 9-1/2″ vs 10″.
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