James_Douglas Posted April 22, 2007 Report Posted April 22, 2007 Hi Guys, I need to know what color spring (color=pounds) is used in the 9.25 inch clutch on fluid drive cars from the early 1950's. The master parts books (MPB)generally tell what color spring. My 1948 MPB tells me that a "Tan" spring is used on the 1948 fluid drive clutch. What I want to know is in the early 1950's when they went to the 251 & 265 cubic inch engines did they up the spring pressure or not. It turns out that the pressure plate that was re-built by NW transmission used a RED spring which according to my 1942 Motors Manual is a 180 pound spring. The 1948 MPB shows Tan which my motors manual shows as 155 pounds. I have a period new pressure plate assembly and it has orange springs which shows up as 165 pounds. So, if anyone has a early 50's parts book and can check that for me I would appreciate it. I am headed to the only clutch shop left here in San Francisco at 8AM to see what I can do about a re-built disk. Thanks all, James Quote
Don Coatney Posted April 22, 2007 Report Posted April 22, 2007 I would think there would be a plaid with this multicolor arraignment:D Quote
James_Douglas Posted April 22, 2007 Author Report Posted April 22, 2007 Perfect, just what I wanted. What year book is this from? Also, which flathead six is tied to this particular parts book ? What I am trying to figure out is what spring pressure was used on the fluid drive cars? ...did they up the pressure when the HP went up with the larger displacement... Thanks, James Quote
James_Douglas Posted April 22, 2007 Author Report Posted April 22, 2007 I would think there would be a plaid with this multicolor arraignment:D Don that 9th addition of Motors shows 17 different colors of springs (Borg & Beck) and their test heights... James Quote
jd52cranbrook Posted April 22, 2007 Report Posted April 22, 2007 52 plymouth P23 Book covers P17 to 23. 218 motor Quote
James_Douglas Posted April 22, 2007 Author Report Posted April 22, 2007 Very good, thanks very much... Anyone with a Chrysler MPB with the larger engines ? James Quote
PatS.... Posted April 22, 2007 Report Posted April 22, 2007 My Canadian parts (Issued May 1950) book which covers the S13 lists the tan spring for the 9 1/4'' clutch w/fluid drive (part # 866591). Also used on the D29 & D30. All Canadian cars had the 25 inch block, the Canadian built S13 had displacement of 236.6. My '49 Chrysler with FD would use the orange spring. (It has the 251) Hope that helps a bit, James. Quote
James_Douglas Posted April 22, 2007 Author Report Posted April 22, 2007 Pat, Thanks. Looks like they used a number of different springs. The imperial site has the 1952 with the big six and shows 2 different sets of springs. The funny thing is they MIX some colors. Both sets end up in the 1500 to 1650 pounds range. Best, James Quote
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