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Lifter bushing hole size? #986483 05/05/11 10:32 AM 05/05/11 10:32 AM
Joined: Apr 2007 Posts: 159 Vidor Texas O onyxba OP member
onyxba OP member O Joined: Apr 2007 Posts: 159 Vidor Texas	What size hole is recommended in a lifter bushing to pushrod oil jesel rockers? I don't want to starve the top end but also don't want to push too much oil up top. Thanks in advance. Brian W.

Re: Lifter bushing hole size? [Re: onyxba] #986484 05/05/11 11:17 AM 05/05/11 11:17 AM
Joined: Mar 2004 Posts: 528 Oak Grove, MN lowflyingdart mopar
lowflyingdart mopar Joined: Mar 2004 Posts: 528 Oak Grove, MN	We drill the bushings with a 3/16" drill and have 0.040" restrictors built into the push rods. Larry

Re: Lifter bushing hole size? [Re: lowflyingdart] #986485 05/05/11 12:43 PM 05/05/11 12:43 PM
Joined: Feb 2004 Posts: 3,441 Mo. S supercomp master
supercomp master S Joined: Feb 2004 Posts: 3,441 Mo.	We drill a .060 hole in the bushing and use a .020 restricter hole in the pushrod.

Re: Lifter bushing hole size? [Re: lowflyingdart] #986486 05/05/11 01:22 PM 05/05/11 01:22 PM
Joined: Feb 2003 Posts: 3,456 Out West 4 408strokerdart master
408strokerdart master 4 Joined: Feb 2003 Posts: 3,456 Out West	Quote: We drill the bushings with a 3/16" drill and have 0.040" restrictors built into the push rods. Larry What he said....then control the oil with the pushrod restrictors. Don't know why any size between 1/16 and 1/8 would not work just fine either since I don't know of anyone running larger than .050 restrictors in their push rods. Might be wrong, but I would say most are between .025 and .040.

Re: Lifter bushing hole size? [Re: 408strokerdart] #986487 05/05/11 05:48 PM 05/05/11 05:48 PM
Joined: Nov 2004 Posts: 4,330 Lynchburg, VA Leon441 master
Leon441 master Joined: Nov 2004 Posts: 4,330 Lynchburg, VA	.028" Career best 8.02 @ 169 at 3050# and 10" tires small block power.

Re: Lifter bushing hole size? [Re: onyxba] #986488 05/05/11 08:42 PM 05/05/11 08:42 PM
Joined: Jan 2003 Posts: 31,074 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,074 Oregon	Hole size shouldn't matter too much, just make sure that you put it in the correct location. If you do it correctly, the lifter clearance is used as the flow restriction and you don't need to pay extra to have restrictors inside the pushrods.

Re: Lifter bushing hole size? [Re: AndyF] #986489 05/06/11 12:09 PM 05/06/11 12:09 PM
Joined: Nov 2010 Posts: 1,397 Carson City, Nevada Biginchmopar pro stock
Biginchmopar pro stock Joined: Nov 2010 Posts: 1,397 Carson City, Nevada	I put two .025" holes in the bushing and it is way more than enough. My pushrods have a .050 hole in them. Good Luck

Re: Lifter bushing hole size? [Re: AndyF] #986490 05/06/11 06:26 PM 05/06/11 06:26 PM
Joined: Jun 2010 Posts: 42 Sweden ppmracing member
ppmracing member Joined: Jun 2010 Posts: 42 Sweden	Andy F is right,,,, go for 0,060-0,080" hole,,,

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