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      10-10-2021, 02:18 PM   #122
Ajolives
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Drives: E90 M3
Join Date: Mar 2019
Location: Tampa

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Quote:
Originally Posted by e92zero View Post
Ajolives Thanks for the measurement. I think the 58mm should work also given the spring is radially wounded so that last strip shouldn't be able to get onto the other edge of the washer when the rest of the spring is covered. What do you think given you have the actual gear and spring to make the evaluation?

I couldn't find anything thinner than this one at 6mm unless maybe go custom. I found a titanium one that's 20mm thick actually, haha. Maybe other member that has connection with a machine shop can work or look for some solution?

Were we able to confirm that the bolt does or doesn't have a washer attached already? If it doesn't, then maybe the 6mm thickness doesn't matter?
No problem! The spring itself isn't very strong laterally, I can manipulate it with my hand in the awkward picture below. If flimsy plastic can (arguably) keep it in place for 10s of thousands of miles any thickness washer would probably have no issues keeping it in place as such.

My only concern would be warping or breaking caused by heat, so I'm personally not sure how well an of-the-shelf washer would do in those conditions. Could become brittle after continuous exposure to operating temps. Not sure if there's any experienced engine builders who could chime in on that. A bit out of my circle of competence…..

Edit: and yeah I have a bolt with no washer attached in the pics I took yesterday. I have the part number right next to it. I believe I got them from ECS or turner, couldn't remember which.
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