750 valve spring

Are ya having a problem with your rig? We'll try to help. Share your tech tips and experiences here. Dr. Billy Glaser, author of the "Unofficial 750 Ural Service Manual" site myural.com, is moderating this section.
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URALNUT60
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750 valve spring

Post by URALNUT60 » Sat Feb 16, 2019 9:22 am

I believe in 07 or 08 Ural upgraded valve springs, could they be made to work on 650's, curious if they could be used and if any benefit from them

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Lee Pape
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Re: 750 valve spring

Post by Lee Pape » Sat Feb 16, 2019 9:54 am

Years ago on the old CMSI board it was listed that a Jaguar valve spring would change over. Please don't ask me which one as that piece of me memory module crashed years ago.
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URALNUT60
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Re: 750 valve spring

Post by URALNUT60 » Sat Feb 16, 2019 10:07 am

I have the same problem Lee! Better design the later springs and I am sure better material, most everything in the 90's was junk from Russia, some pretty ugly years

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jaybird
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Re: 750 valve spring

Post by jaybird » Sat Feb 16, 2019 12:26 pm

It's my understanding that the newer spring tension is detrimental to the brass cam bushing on the older engines, maybe someone with better memory/knowledge of this will speak up.
I'm sure it wouldn't hurt to go with a slightly stronger spring, but I think more importantly it would be good to make sure the springs you are using are at least up to spec and have consistent tension.

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Re: 750 valve spring

Post by gobium » Sat Feb 16, 2019 12:41 pm

Short answer is NO
Long answer is NOOOOO

URALNUT60
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Re: 750 valve spring

Post by URALNUT60 » Sat Feb 16, 2019 1:41 pm

Thank you everybody

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