replacing the oil pressure relief valve in a 2H

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Nov 18, 2007
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Hey Guys,
was wonderin if this was a fairly easy job?
I bought the aftermarket valve from sor thats longer
and isnt suppose to stick as easy. My concern is that i
dont have a replacement spring. If you change the size of the valve do you need to alter the spring? My pressure gauge has been reading high lately(it goes back down after i drive for a while} and i read that this little valve could be the culprit.Plus, the thought of a filter explosion while on the highway does not generate a warm and fuzzy feeling.

Thanks for all advice, snaps
 
Humm. I'm not sure about the longer valve. I have a new one that came with my oil pump rebuild kit but my valve was done shortly before I bought my truck. As far as I know it's easy enough, take out the ~22mm bolt and washer and remove the spring and valve. I didnt know the new one was changed I thought they were just replaced because they wore out and got stuck.
 
Since you replied , I'll add in what I can remember.
Im 80% sure i read on here that the valve is longer with the same spring can be used. Common problem)
It's the shortness of the valve that it can get stuck in the bore.
Also If i can remember the gent who needed to change it had a problem getting the old one out after removing the spring, he just started it and made a mess firing out the old plunger.

I'm going off over a year ago read , +my old grey matter.

VT
 
Snaps--I just did the oil plunger (valve) and stiffer spring modification a few months ago (4Wheel Auto--Canada) due to the concerns about sticking system and also wanted to boost my oil pressure a bit since my gauge seemed low.

Sounds simple, but the spring was longer/stiffer so was really hard to stuff the bolt hold down back in--finally about 1.5 hours later and worn out hands--got the new valve/plunger and spring installed. Pressure came up about 20% or more on the factory gauge.

VTCDN is right as to the reasons--
Turns out with an actual mechanical gauge I'm finding I have great oil pressure, and recently confirmed bearings are in excellent shape--so, turns out I didn't need this mod for oil pressure, but still glad I did it so I don't have the stuck valve that some have experienced.

I prefer to do preventative maintenance rather than crisis repairs--cheaper, better control of 'where/when'.

Take care,
LCDiesel60
Oregon
 
Hi fellers I'm new here and i live in Australia ,I'm pretty sure you should change longer valve with the spring.
I have this issue at the present time my engine has just passed the 200000 k mark I'm the second owner old bloke died and missus could not drive it.
This little valve has blown my rear crank seal subsequently drowning my clutch.
My question is can you fellers in the US or Canada facilitate me with an address where i can buy this valve as i can only find one bloke that sells them here and he wants over $100 plus postage and i consider this a rip off .Thank you all
 
Hi fellers I'm new here and i live in Australia ,I'm pretty sure you should change longer valve with the spring.
I have this issue at the present time my engine has just passed the 200000 k mark I'm the second owner old bloke died and missus could not drive it.
This little valve has blown my rear crank seal subsequently drowning my clutch.
My question is can you fellers in the US or Canada facilitate me with an address where i can buy this valve as i can only find one bloke that sells them here and he wants over $100 plus postage and i consider this a rip off .Thank you all

It does seem rather expensive.

ReliefValveOversize.webp

Engine Australia does sell that same Taiwanese brand. So perhaps you should compare their price?

However I doubt you'll find it much cheaper anywhere because when someone produces a part for such a limited market they usually need to charge extra to recover their tooling-up costs.

:cheers:

ReliefValveOversize.webp
 
I did the extended piston in about 15 minutes on mine.

I was concerned because the factory oil pressure gauge always read very low at idle and while in motion.

CHECK WITH A MECHANICAL GAUGE!!!

I put my Snapon mechanical gauge on in place of my factory sending unit and I found that I make 85 PSI at 3000 RPM and almost 40 PSI at idle (85 psi is the limit). Needless to say, I am pleased with the oil pressure (I JUST changed the oil and filter).

I used a small snap on magnet to remove the piston and a ton of patience to reinstall.

Dan
 

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