Since you are removing the nuts I think I would replace the old sealing washers with brass washers.
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head bolt retorque.
- Thread starter CDNTX650
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Yup, going to do that but probably with copper. The rubber's not going to survive the torch anyway!
Just remember the washers need to be 1/8" thick to allow for the amount of thread that goes in those nuts. Thinner washers run the risk of the threads topping out in the acorns nuts so you do not get a reliable torque setting. Naughty me used 3mm washers instead of 3.175mm, but they worked.
Copper or even Brass ? washers will look great on your black/gold accented Cafe bike !
I have read that even Aluminum is acceptable for these washers.
Yes, once those nuts seize on there, accurate torque checking is impossible. They'll read tighter than they really are. That's why I feel lubing the threads is essential. And yes, copper washers on the four outside studs. Mine came from eBay .....
Made mine out of brass
Brass from Amazon.
This is interesting to me. Didn't think of that..Thinner washers run the risk of the threads topping out in the acorns nuts so you do not get a reliable torque setting. Naughty me used 3mm washers instead of 3.175mm, but they worked.
pckopp
XS650 Addict
I made mine from a piece of flat brass I found on the road. It was 3mm by 50mm across. I marked out where each washer would go, center punched and drilled at 10mm. Then crudely cut them out as irregular hexagons, bolted them all together and stuck them in the lathe to trim to their final radius. The center 10mm holes were quite a snug/tight fit over the threaded studs, but I did not have a 10.5mm drill. Before fitting I heated them all to a dull red then cooled in water.
I made some Aluminum washers the same way but never used them because brass looked nicer.
I made some Aluminum washers the same way but never used them because brass looked nicer.
Got my copper ones from Ace Hardware locally. About a buck apiece.
So 3mm+thick, 30mm OD, 10mm+ ID
Seems good ?
Seems good ?
Just measured the steel washer and it's 3.1mm thick, so 3mm is a good enough match. I thought i had enough M10 copper washers to double up as necessary but just have 4 And they are much too thin so I also need to shop for more washers .....
These are what I bought. Less than a dollar a piece. 2mm thick, have used them on 2 motors with no problems.
https://www.amazon.com/gp/product/B009OK2T5G/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
You guys are cheap asses 
guess I'll use mine without plans to profit on selling em 
guess I'll use mine without plans to profit on selling em
I just prefer brass to match the gold pinstriping is all. No mechanical reason
Just my opinion. I think brass is a better option due to the clamping force and the thermal expansion.
Plus brass looks cooler.
Plus brass looks cooler.
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