Oil bypass, do you block it?

Eman · 05-13-2019, 02:28 PM

On a SBC the oil bypass is in the oil filter adapter, I'm not sure on other motors. Do you block it to avoid oil bypassing the filter? I've read info arguing both ways.

voltdr · 05-13-2019, 04:41 PM

I block mine. You must run an oil filter capable of handling the increased flow through it. I use the K&N HP3002.
Dan

BillK · 05-14-2019, 07:39 AM

I have blocked a couple for customers that wanted them that way but like Dan said you absolutely must run a good racing type filter and be willing to warm the engine up some before getting your foot in it.

I have also seen two nice engines ruined because the owners used a cheap filter that came apart and blocked the oil passage going into the block

Eman · 05-14-2019, 09:24 AM

I've blocked them in the past and used Wix filters, both standard and racing. I've never had any problems but it does make sense that the oil can't pass through the filter fast enough especially on launch. Cold oil and high viscosity would also slow the flow through the filter with no bypass.

carl hinkson · 05-14-2019, 12:04 PM

I have block all of mine and use 1061 NAPA gold as it has a 19 micron rating VS the filters which have a 51 Micron rating.

No issues to date.

RULER · 05-14-2019, 11:47 PM

Dirty oil is better than no oil.......

carl hinkson · 05-15-2019, 07:26 AM

Quote:

Originally Posted by RULER

Dirty oil is better than no oil.......

A good case here. You have to know what your doing when building an engine and what parts to use,

I have always blocked the bypass and no problems to date, If you know what your doing it works.

Ed Wright · 05-19-2019, 06:56 PM

Been blocking mine for over thirty years, never an issue. Clean oil.
1061 NAPA filters. Made by WIX.

carl hinkson · 05-19-2019, 08:57 PM

Quote:

Originally Posted by ed wright

been blocking mine for over thirty years, never an issue. Clean oil.
1061 napa filters. Made by wix.

x100000000000000000000000000000000000000000

Eman · 05-20-2019, 02:53 PM

Interesting how now word is that Wix has been manufacturing out of the country and quality has dropped. Anyone have any info on Wix quality?

05-13-2019, 02:28 PM	#1
Eman Member Join Date: May 2014 Location: E TN Posts: 473 Likes: 16 Liked 133 Times in 76 Posts	Oil bypass, do you block it? On a SBC the oil bypass is in the oil filter adapter, I'm not sure on other motors. Do you block it to avoid oil bypassing the filter? I've read info arguing both ways.

05-13-2019, 04:41 PM	#2
voltdr Senior Member Join Date: Jan 2008 Location: Texas Posts: 706 Likes: 77 Liked 100 Times in 51 Posts	Re: Oil bypass, do you block it? I block mine. You must run an oil filter capable of handling the increased flow through it. I use the K&N HP3002. Dan __________________ Dan Foley SC 4698

05-14-2019, 07:39 AM	#3
BillK Member Join Date: Nov 2005 Location: Waldorf Md Posts: 230 Likes: 12 Liked 30 Times in 17 Posts	Re: Oil bypass, do you block it? I have blocked a couple for customers that wanted them that way but like Dan said you absolutely must run a good racing type filter and be willing to warm the engine up some before getting your foot in it. I have also seen two nice engines ruined because the owners used a cheap filter that came apart and blocked the oil passage going into the block __________________ Bill Koustenis

05-14-2019, 09:24 AM	#4
Eman Member Join Date: May 2014 Location: E TN Posts: 473 Likes: 16 Liked 133 Times in 76 Posts	Re: Oil bypass, do you block it? I've blocked them in the past and used Wix filters, both standard and racing. I've never had any problems but it does make sense that the oil can't pass through the filter fast enough especially on launch. Cold oil and high viscosity would also slow the flow through the filter with no bypass.

05-14-2019, 12:04 PM	#5
carl hinkson Member Join Date: Feb 2007 Location: NORTHEAST Posts: 287 Likes: 1 Liked 18 Times in 10 Posts	Re: Oil bypass, do you block it? I have block all of mine and use 1061 NAPA gold as it has a 19 micron rating VS the filters which have a 51 Micron rating. No issues to date.

05-14-2019, 11:47 PM	#6
RULER Member Join Date: Jan 2006 Posts: 221 Likes: 15 Liked 58 Times in 18 Posts	Re: Oil bypass, do you block it? Dirty oil is better than no oil.......

05-19-2019, 06:56 PM	#8
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Oil bypass, do you block it? Been blocking mine for over thirty years, never an issue. Clean oil. 1061 NAPA filters. Made by WIX. __________________ Ed Wright 4156 SS/JA

05-20-2019, 02:53 PM	#10
Eman Member Join Date: May 2014 Location: E TN Posts: 473 Likes: 16 Liked 133 Times in 76 Posts	Re: Oil bypass, do you block it? Interesting how now word is that Wix has been manufacturing out of the country and quality has dropped. Anyone have any info on Wix quality?