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K301 Cylinder Head Washers


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#1 Jkrogers OFFLINE  

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Posted September 11, 2012 - 09:33 AM

Getting ready to put the head back on a K301 and have misplaced one of the washers for the cylinder head bolts. The originals are thicker than just a standard washer. Do I need to find the thicker set of washers or can just a standard 3/8" washer work and not mess up the torque?

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#2 Guest_gravely-power_*

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Posted September 11, 2012 - 09:48 AM

A regular washer will work, but you need to re-torque the head after you run the engine as the "regular" washer is softer than the original and will compress over time.
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#3 Jkrogers OFFLINE  

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Posted September 11, 2012 - 10:21 AM

Thanks for the reply, I may see if I can pick up and original thickness. If not I will replace all of them with regular washers.

thanks again

#4 JDBrian OFFLINE  

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Posted September 11, 2012 - 02:18 PM

Try to get grade 8 washers. They are stronger and may be the right thickness as well. Run a bolt down into all the holes before you put the head on and make sure you can get the bolt in smoothly with little resistance and deep enough to seat the heat properly. If the bolt is hard to turn or bottoms out you will not get the correct torque on the head.
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#5 LilysDad OFFLINE  

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Posted September 11, 2012 - 04:38 PM

Thanks for the reply, I may see if I can pick up and original thickness. If not I will replace all of them with regular washers.

thanks again


Then they will all require more frequent torqueing.
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#6 JDBrian ONLINE  

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Posted September 17, 2012 - 05:20 PM

If you get grade 8 washers then you won't need to worry about the re torquing issue. I think you will find that grade 8 washers are about the right thickness as well.

#7 Grumpy OFFLINE  

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Posted September 18, 2012 - 05:27 PM

Try to find out where Machine Shops in your area by ther bolts. They should have the kind of washers you need. Ask for 3/8 hard washers the work great for head bolts.
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