Cokekid Posted November 30, 2020 Share Posted November 30, 2020 Getting all the parts ready to install cylinder heads. I have all the nuts. When I looked up for what washers I needed, this is what I found in the parts book. Part #351428 S7 I looked the part up it read 7/16 (3/16 x 1/8) Special Plain Washer What is special about these Washers.? Gerry Link to comment Share on other sites More sharing options...
38ShortopConv. Posted November 30, 2020 Share Posted November 30, 2020 (edited) Probably slightly convex when new? Edited November 30, 2020 by 38ShortopConv. (see edit history) Link to comment Share on other sites More sharing options...
C. Douglas Johnson Jr. Posted December 1, 2020 Share Posted December 1, 2020 I thought only aluminum got washers Link to comment Share on other sites More sharing options...
Cokekid Posted December 1, 2020 Author Share Posted December 1, 2020 38ShortopConv I was thinking lock washer but I noticed that they do spell out different type of washers when required. 351448 special spring washers 351459 special flat washers 351469 spring washers I am going to use plain stainless ones C Douglas Johnson Jr. I was looking at Page #83 & 322 and there is nothing indicating what type of metal the part is used on. Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 1, 2020 Share Posted December 1, 2020 Restoration Supply sells special heavy chrome washers that are $4.00 each. Yikes! Link to comment Share on other sites More sharing options...
19tom40 Posted December 2, 2020 Share Posted December 2, 2020 I have the May 1946 Chassis Parts and Price list and the washers are listed as 351428-S7 which are cad plated washers. They are not listed as a special washer in this catalog, but they are listed in the Special section of the Standard Parts Catalog. Parts in this section of the catalog are not standard hardware store parts, they have dimensions that vary from the standard hardware of the era. The dimensions of 351428-S7 are: inside diameter 29/64"; outside dia. 29/32"; thickness 7/64" Link to comment Share on other sites More sharing options...
edinmass Posted December 3, 2020 Share Posted December 3, 2020 On 12/1/2020 at 10:57 AM, Matt Harwood said: Restoration Supply sells special heavy chrome washers that are $4.00 each. Yikes! Matt......4 dollars to wash a car today is a very fair price! 👍 Link to comment Share on other sites More sharing options...
abelincoln Posted December 16, 2020 Share Posted December 16, 2020 I'm using aluminum aftermarket heads, so I looked on granger.com and found a box of washers just the right size, much cheaper. Abe Link to comment Share on other sites More sharing options...
Ray500 Posted December 16, 2020 Share Posted December 16, 2020 The only thing special about these washers is they are thick. That's to allow for better torque. And whether or not they were originally on the heads, it's good to have them as you can certainly torque the nuts to the head studs (45-55#) better than just nuts alone! I would use stainless steel thick washers as they won't rust and can be removed easier if the heads ever need to come off. Link to comment Share on other sites More sharing options...
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