Oil restricter

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Oil restricter

Post  69F100 on September 22nd 2018, 10:10 am

What is needed to restrict some oil from the lifters after I changed rocker arms I got to much oil to top half. I am not loosing oil pressure now after a run with the new pan but my vacuum pump sucking oil out of the valve cover. I have a baffles in the valve covers. I don't have any blow bye with vacuum pump off so I don't think it is the rings the engine only has maybe 20 passes on it.
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Re: Oil restricter

Post  Lem Evans on September 22nd 2018, 10:35 am

loosing pressure on the gas or off the gas with brakes on?

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Re: Oil restricter

Post  rmcomprandy on September 22nd 2018, 8:44 pm

69F100 wrote:What is needed to restrict some oil from the lifters after I changed rocker arms I got to much oil to top half. I am not loosing oil pressure now after a run with the new pan but my vacuum pump sucking oil out of the valve cover. I have a baffles in the valve covers. I don't have any blow bye with vacuum pump off so I don't think it is the rings the engine only has maybe 20 passes on it.

What you should use depends upon whatever block you have.

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Re: Oil restricter

Post  dfree383 on September 22nd 2018, 9:13 pm

Pushrods would be easy
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Re: Oil restricter

Post  69F100 on September 23rd 2018, 5:57 am

Running a D9 block I haven't seen a drop in oil pressure after putting the new oil pan on. Before it was at the end of the run when i would get on the brakes. Never had that problem until I changed my rocker arms and went to the Crane Gold rocker.
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Re: Oil restricter

Post  rmcomprandy on September 23rd 2018, 9:33 am

69F100 wrote:Running a D9 block I haven't seen a drop in oil pressure after putting the new oil pan on. Before it was at the end of the run when i would get on the brakes. Never had that problem until I changed my rocker arms and went to the Crane Gold rocker.

Like Dave said ... restricted pushrods is your only alternative with a production oiling system; (unless bushing the passenger side lifter bores).

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Re: Oil restricter

Post  69F100 on September 23rd 2018, 12:02 pm

Thanks for the info I will check on new push rods with restricter in them I have to pull a intake and exhaust can't remember the length of of them off the top of my head
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Re: Oil restricter

Post  BOSS 429 on September 23rd 2018, 10:51 pm

rmcomprandy wrote:
69F100 wrote:Running a D9 block I haven't seen a drop in oil pressure after putting the new oil pan on. Before it was at the end of the run when i would get on the brakes. Never had that problem until I changed my rocker arms and went to the Crane Gold rocker.

Like Dave said ... restricted pushrods is your only alternative with a production oiling system; (unless bushing the passenger side lifter bores).



I kn ow of 4 or 5 guys in the last 2 years same prob with the crane golds, no so much a prob if you install restrictors, or like was said pushrods.

the crane rocker at lift line up the oil holes better them some other rockers,thus letting more oil by
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Re: Oil restricter

Post  69F100 on September 24th 2018, 10:23 pm

I am running right now .080 wall going to stop by Summit tomorrow on the way home and pickup some .135 wall pushrods . I was thinking the .135 would have a smaller oil hole that would restrict the oil. I called Summit and ask them about oil restrictor pushrods in a 3/8'' 8.55 and 8.65 said he did not have a listing for oil restrictor pushrod that size only ones he showed was in 5/16''. Am I right .135 would have a smaller hole by the math it should be .055 smaller hole than the .080 if so I get them and try.
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Re: Oil restricter

Post  rmcomprandy on September 25th 2018, 9:15 am

69F100 wrote:I am running right now .080 wall going to stop by Summit tomorrow on the way home and pickup some .135 wall pushrods . I was thinking the .135 would have a smaller oil hole that would restrict the oil. I called Summit and ask them about oil restrictor pushrods in a 3/8'' 8.55 and 8.65 said he did not have a listing for oil restrictor pushrod that size only ones he showed was in 5/16''. Am I right .135 would have a smaller hole by the math it should be .055 smaller hole than the .080 if so I get them and try.

They are no restriction at all ... you will need pushrods which are designated "Restricted" which have only about a .020" hole in the lifter end.

Call a pushrod manufacturer, not Summit.

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Re: Oil restricter

Post  dfree383 on September 25th 2018, 9:59 am

Manton, Trend and smith brothers are all high quality manufactures of custom pushrods
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Re: Oil restricter

Post  BOSS 429 on September 25th 2018, 1:25 pm

69F100 wrote:I am running right now .080 wall going to stop by Summit tomorrow on the way home and pickup some .135 wall pushrods . I was thinking the .135 would have a smaller oil hole that would restrict the oil. I called Summit and ask them about oil restrictor pushrods in a 3/8'' 8.55 and 8.65 said he did not have a listing for oil restrictor pushrod that size only ones he showed was in 5/16''. Am I right .135 would have a smaller hole by the math it should be .055 smaller hole than the .080 if so I get them and try.


smith bros push rods
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Re: Oil restricter

Post  69F100 on September 25th 2018, 4:13 pm

dfree383 wrote:Manton, Trend and smith brothers are all high quality manufactures of custom pushrods

BOSS 429 wrote:
69F100 wrote:I am running right now .080 wall going to stop by Summit tomorrow on the way home and pickup some .135 wall pushrods . I was thinking the .135 would have a smaller oil hole that would restrict the oil. I called Summit and ask them about oil restrictor pushrods in a 3/8'' 8.55 and 8.65 said he did not have a listing for oil restrictor pushrod that size only ones he showed was in 5/16''. Am I right .135 would have a smaller hole by the math it should be .055 smaller hole than the .080 if so I get them and try.


smith bros push rods

Called Smith Brothers and ordered 8 8.550 and 8 8.650 restrictor pushrods for $200 plus shipping that less than what I payed for the ones I got in it now.
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Re: Oil restricter

Post  69F100 on September 25th 2018, 7:53 pm

69F100 wrote:
dfree383 wrote:Manton, Trend and smith brothers are all high quality manufactures of custom pushrods

BOSS 429 wrote:
69F100 wrote:I am running right now .080 wall going to stop by Summit tomorrow on the way home and pickup some .135 wall pushrods . I was thinking the .135 would have a smaller oil hole that would restrict the oil. I called Summit and ask them about oil restrictor pushrods in a 3/8'' 8.55 and 8.65 said he did not have a listing for oil restrictor pushrod that size only ones he showed was in 5/16''. Am I right .135 would have a smaller hole by the math it should be .055 smaller hole than the .080 if so I get them and try.


smith bros push rods

Called Smith Brothers and ordered 8 8.550 and 8 8.650 restrictor pushrods for $247 plus shipping that less than what I payed for the ones I got in it now.
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Re: Oil restricter

Post  69F100 on September 25th 2018, 7:55 pm

it was $247 plus shipping not $200
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