Oil pump shim
04-05-2016, (Subject: Oil pump shim ) 
Post: #1
Oil pump shim
I remember from the old site that you can use dimes or pennies to shim the oil pump but how many do you need to to use? My engine is getting a new head and rod and main bearings and want to up the oil preasure wile everything is apart so how many and wich one do I need to use?
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04-05-2016, (Subject: Oil pump shim ) 
Post: #2
RE: Oil pump shim
Dimes or pennies? Inflation !!!!!
Quarters!!!! If i remember it right four.
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04-05-2016, (Subject: Oil pump shim ) 
Post: #3
RE: Oil pump shim
./uploads/201604/post_1894_1459911411_f2f6cb961393c8ccf4eed43da4f824d6.jpg./uploads/201604/post_1894_1459911411_f2f6cb961393c8ccf4eed43da4f824d6.jpg
(04-05-2016 )Erics diesel Wrote:  I remember from the old site that you can use dimes or pennies to shim the oil pump but how many do you need to to use? My engine is getting a new head and rod and main bearings and want to up the oil preasure wile everything is apart so how many and wich one do I need to use?

Take a look,then check your hardware (spring and plunger for wear.There is a replacement kit available which I posted the number.


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User's Signature: 36-25-34
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04-05-2016, (Subject: Oil pump shim ) 
Post: #4
RE: Oil pump shim
Hey when you are done, please come back and tell us how it worked out and what you did.tnx


User's Signature: 36-25-34
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04-05-2016, (Subject: Oil pump shim ) 
Post: #5
RE: Oil pump shim
From the old forum


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04-06-2016, (Subject: Oil pump shim ) 
Post: #6
RE: Oil pump shim
gearhead has the exact shim measurement - but its more than you think - i believe his was somewhere in the 1/2" range but im sure he will chime in to make sure.
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04-06-2016, (Subject: Oil pump shim ) 
Post: #7
RE: Oil pump shim
(09-15-2015 )Gadget Wrote:  I wanted to follow up on the oil pressure
After I got back to my shop I decided to pull the oil pan and fix the mistake we made with the oil pressure mod.
When I got the pan removed actually dropped down in the front I completely removed the pressure regulator valve from the oil pump, you have to remove one of the mounting bolts and the cotter pin to get the valve out.

./uploads/201604/post_2_1459941301_467ea3360f437b30408493c0eb561fde.jpg

As you can see in the picture the spring goes into the cup in the end of the valve I added 6 pennies inside the cup to add tension to the spring. I think you could use more I wasn't interested in huge increase just enough to keep oil pressure at about 40 psi while going down the road at 13-1400 rpms
After adding the pennies (you could also use dimes) I have driven this week and at 1400 rpm and oil temp around 220 I am keeping 40 psi. I am thinking if I did it again I would have used 8 or 9 pennies. The spring is definitely harder to compress and get the cotter pin back in. I got the end cap started then used a torx screwdriver to push the cap in to install the cotter pin.
I don't see a great increase in idle oil pressure but a very solid 20 psi at idle about 650 rpm
I also changed the oil filter bypass with the new cartridge style valve.


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
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04-06-2016, (Subject: Oil pump shim ) 
Post: #8
RE: Oil pump shim
I will use 8 pennies and let you guys know what the preasure is like once we get it back on the road hopefully this weekend
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04-06-2016, (Subject: Oil pump shim ) 
Post: #9
RE: Oil pump shim
I will be shimming mine a bit too, but ...

I would suspect that the more you shimm it, the shorter its lifespan will be as well.- Just some thoughts.


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
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