 Cylinder Head Washers, Anything special about them? |
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| bbrock |
 Apr 17 2019, 11:05 AM
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#1
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914 Guru  Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains 
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The washers I took off my heads (Type 4) 30 years ago got mixed in with my other hardware. I fished out 16 M10 washers that fit, but want to make sure I'm installing correct washers and maybe source some new ones if needed. PET just lists:
washer A 10,5 Are they special thickness or hardness etc.? BTW, anyone know what the "A", "B", etc. for hardware specs in the PET mean? I haven't been able to find a key. Must be looking in the wrong place. |
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| jcd914 |
Apr 17 2019, 01:13 PM
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#2
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
What are the dimensions of the stock washers?
I wonder if a non-hardened thicker washer would make up the the lack of hardening? At the low torque these are under the washer is not going to crush, even if it is not hardened. A non hardened washer would not distribute the load out to the edges the same as a hardened washer would but an extra thick washer might. Jim |
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| bbrock |
Apr 17 2019, 01:27 PM
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#3
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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QUOTE(jcd914 @ Apr 17 2019, 01:13 PM)  What are the dimensions of the stock washers? I wonder if a non-hardened thicker washer would make up the the lack of hardening? At the low torque these are under the washer is not going to crush, even if it is not hardened. A non hardened washer would not distribute the load out to the edges the same as a hardened washer would but an extra thick washer might. Jim The one I measured which I'm 90% sure was one of the original head washers had the following dimensions in mm: I.D. - 10.5 O.D. - 21.75 Thickness - 3 Assuming it's a head washer, it's already pretty thick. In addition to the torque, I wonder about the pounding these things get. Seems like the nuts might pound down through softer material and resulting in loss of torque. Which brings up another question: locktite on the studs or no? |
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Posts in this topic
bbrock Cylinder Head Washers Apr 17 2019, 11:05 AM
Valy Yes, they are harder than regular washers.
You nee... Apr 17 2019, 11:21 AM
bbrock
Yes, they are harder than regular washers.
You ne... Apr 17 2019, 11:25 AM Mblizzard
Yes, they are harder than regular washers.
You n... Apr 17 2019, 11:34 AM bbrock
[quote name='bbrock' post='2706194' date='Apr 17 ... Apr 17 2019, 12:16 PM Mblizzard
What are the dimensions of the stock washers?
I... Apr 17 2019, 02:07 PM |
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