Manifold Washers
Posted by Joe On 2023/6/23 15:17:18
Hey all - sorry if this is the question of a pedant. I just had my manifold's gasket surface milled and want to put new hardware on as well. Took the suggestion of some of the 22nd-23rd series Facebook page to acquire a set of"Marsden" or flex-top lock nuts from McMaster-Carr. I also want to replace the washers - most of them are crooked or deformed in some way, and it would seem I would everything to be flat.
Looking at McMaster's site, I tried to match the dimensions of the washers I pulled off, which are for a 3/8" stud, 1" OD, and appear to be 5/32" or .15625" thick. McMaster only seemed to have washer sizes that were either somewhat smaller or somewhat larger, but nothing in the range of 1/8" to 5/32" thick like these washers. I acquired a set from McMaster that are 316 Stainless and are between .110" and .140" thick. The ID and OD match up perfectly, but the thickness is clearly different (new on the left, old on the right), and the old washers weigh 13g, compared to 9g for these new ones.
My question/concern is are these washers going to bend/deform from the torque/heat/cooling and give me grief, and I should avoid using them, or despite having less overall heft (not sure how/if that would relate to the strength of the washer), they are up to the task. I assumed not going with the thicker washers so I could ensure the nut has access to as many threads as possible.
Sorry if I'm overthinking this, or have missed this question in other threads. Thanks in advance.
Attach file:
Washers.jpg (226.28 KB)
Looking at McMaster's site, I tried to match the dimensions of the washers I pulled off, which are for a 3/8" stud, 1" OD, and appear to be 5/32" or .15625" thick. McMaster only seemed to have washer sizes that were either somewhat smaller or somewhat larger, but nothing in the range of 1/8" to 5/32" thick like these washers. I acquired a set from McMaster that are 316 Stainless and are between .110" and .140" thick. The ID and OD match up perfectly, but the thickness is clearly different (new on the left, old on the right), and the old washers weigh 13g, compared to 9g for these new ones.
My question/concern is are these washers going to bend/deform from the torque/heat/cooling and give me grief, and I should avoid using them, or despite having less overall heft (not sure how/if that would relate to the strength of the washer), they are up to the task. I assumed not going with the thicker washers so I could ensure the nut has access to as many threads as possible.
Sorry if I'm overthinking this, or have missed this question in other threads. Thanks in advance.
Attach file:
Washers.jpg (226.28 KB)
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