i recently got a new Circle D torque converter for my 700R4. It came with a set of .030" washers and 0.060" which I thought was great. I needed about 0.090" to get a clearance of ~0.125" so running both washers got me ideal converter space. When I measured the washers with my vernier caliper they were 0.005" to 0.015" difference. is this a big deal? I remember years ago talking to Dana @ Probuilt and he said they should be +/- 0.001". should I goto machine shop and get shims made up or just run it as is?

Thanks.

 

If you can mix them up to get the same measurement at the 3 corners, that should be okay. You should flat sand them, it is not to hard to do. If the variation is too much, you will wipe out the pump bushing.

 

As in post #2 above, hand sand them ( emery cloth/sandpaper on a flat surface with 160-400 grit just to get rid of any 'edge' from the manufacturing of those washers), then re-measure, vernier caliper will measure any edge burr, so they may be closer then first measured.
But yes, they should match very closely.
A .030" washer is 1/32, a .060" washer is 1/16, The 2 recent times I did an install, all 3 matched exactly.

 

Thank you for replies. I had checked this a month ago and went and looked again last night, turns out I only need a 0.060" washer, not both (0.090"). I will deburr and do a before and after flat sanding and report back.

 

must have been in a hurry or tired when I checked these the first time. measurements were more like 0.0005" to 0.0015" difference. after some light deburing both sets of washers they were all +/- 0.0005". used the 0.060" washers and my gap was about 0.120". Thanks all for the help.