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oil pressure release valve
#809118 05/16/20 5:12 pm
Joined: Mar 2020
Posts: 17
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The screen came out of my release valve. The piston and spring are ok, no scoring on piston or body. MAP list a body for $19.00. It looks like it takes an o-ring instead of a gasket to seal to the case. Also in the listing it mentions a spring and ball. Are there 2 different types of valves? I would like to just replace the body it i can. Thanks for any information Russ

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Re: oil pressure release valve
RUSS TILLEY #809122 05/16/20 6:19 pm
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Have a look on eBay. TSS were selling NOS units, I have a few of them for my future builds, had one of them on my Lightning for a few years, I just gave it a clean before fitting and it’s been spot on. Not all that expensive either.


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Re: oil pressure release valve
RUSS TILLEY #809758 05/21/20 4:30 am
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Originally Posted by RUSS TILLEY
Also in the listing it mentions a spring and ball. Are there 2 different types of valves? I would like to just replace the body it i can. Thanks for any information Russ
Early valves used a ball, late valves used the piston. I don't know if there's a difference in the diameter of the two.
Just don't get the SRM PRV. The stainless piston scores easily and quickly.


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Re: oil pressure release valve
RUSS TILLEY #809776 05/21/20 8:42 am
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A ball type valve uses the same threads as the piston type David, but you need to fit the complete item. There are new ball type OPRV available with a stainless body (but being a ball type the fact it’s stainless doesn’t matter.... unless your ordering a new ball and spring as they are different from the factory item)


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