37_Roadmaster_C Posted August 2, 2014 Share Posted August 2, 2014 Hi All,I am in the process of restoring the 37 Roadmaster Phaeton. I recently aquired a replacement clutch disk for the car... It is not the same as the disk that came out of the car. Now I am wondering where the problem is. Normally I would give Dave Tachney a call but I know he is away from home until about the 8th . The replacement disk came from a source that I would normally think of as reliable, not any of our normal suppliers, but good people anyway. Now I know that my car has had work done in the early 40's but I am fairly sure the transmission is origional. The disk that came out of the car is an 11 inch disk and the spline measurments in the disk are as follows: 10 spline, 1 inch across the spline tips and approximately 1.225 inch across the spline valleys. The replacement disk simply has a smaller spline by about 1/8 inch. Now my question is which one is right for a 37 series 80 car? If anyone has any info I would really like your feedback, if not I will wait for Dave....Thanks for any input you may have. This is not really to time critical except I need to get it corrected with the supplier as I don't know if they sent me the wrong part or if my car has had some non-origional transplant. If the first then it is the suppliers problem, the later it is my problem. Either way I need to get it taken care of in a timely manner.Thanks,Robin Link to comment Share on other sites More sharing options...
DonMicheletti Posted August 2, 2014 Share Posted August 2, 2014 It could be that you have gotten a 40 series clutch. 40's series have a 10" disc and I believe the spline is smaller too. The 40 series transmission spline is 1-1/8"outside diameter and has 10 splines. (I just measured one of mine).Also, when I replaced my '38 Roadmaster clutch, the first exchange replacement disc had different springs in the hub and wouldnt go back up into the bellhousing. I ended up having to have my original disc rebuilt. There are differences. Link to comment Share on other sites More sharing options...
37_Roadmaster_C Posted August 3, 2014 Author Share Posted August 3, 2014 Don,This is what I am thinking. The origional and the replacement are both 11 inch disks with 2.5 inch wide pressure plates. The springs are also different. The origional has 8 springs about 1/2 X 1 inch the replacement has 6 springs about 3.4 X 1 long and much larger spring wire. I am fairly sure that my supplier goofed but I really want to know for sure before I makew an a$$ of myself trying to make them eat my mistake. I really want to be fair and get the problem resolved with as little cost to everyone as possible.Robin Link to comment Share on other sites More sharing options...
DonMicheletti Posted August 3, 2014 Share Posted August 3, 2014 Here are photos of the 2 discs. You can see the differences in the springs. I dont remember which one is the correct one -to long ago. Link to comment Share on other sites More sharing options...
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