the oil filter adapter

has an oil filter bypass from the factory, most people block the bypass to make sure all oil is filtered..


they do make these with no bypass at all..


the oil pump also has a bypass in it.. some shim the spring to up the pump pressure..

 

I am aware they make an adapter with no bypass but I was looking for a unit with an UPGRADED bypass.. I had heard there was a company that makes one with higher spring pressure.
I am nervous about installing one without the bypass as my engine is for a daily driver.

 

you'll have no issues unless you do 1 of 3 things

1)buy cheap junk filters
2)throttle junkie while engine is cold
3)don't change the filter every 3500 miles 5-6k on syn oil..

 

This is a myth.
There's no danger of oil filter blow off because the pressure relief valve controls the system pressure, not the bypass. Oil filter blow offs happen when the pressure spring in the pump is shimmed. I've seen this happen on a Corvette. Guy thought too much was just right. or being a throttle junkie when engine is cold.

Really high cold pressure is the result of thick oil and or too high a pressure relief spring.
The ONLY problem is if you don't change your oil filter or it gets plugged.
When it gets restricted you will see a drop in oil pressure. If you change your filter when you are supposed to you won't have any problems.
The benefit is 100% of the oil going through the filter.
Lingenfelter recommends this mod (it's in his book).
I laso recommend cutting your filter open when you change it and inspect the pleats. You want to look for early warning signs of impending doom.

 

I don't like crippled or eliminated filter bypasses unless you do a lot of other things.

You cannot force more oil through standard filter by interfering with or eliminating its bypass. The filter will only pass so much oil PERIOD! As a result you risk starvation within the engine which has the potential of resulting in a lot more damage that some dirt flowing with the oil. What happens when the filter can no longer pass more oil when its bypass is either raised or eliminated is that the pump pressure bewteen it and the filter which becomes a restriction raises the untill it unseats the pump's internal bypass. Since that is an internal short circuit from the delivery side back to the intake side the oil heats up really fast and far as it makes this loop over and over again.

If you're going to mess with the filter bypass then you've got to also look at increasing the area of filter media, or increasing the micron size, either way to get the pressure diffenential across the media down to where it is not enough of an obstruction to trigger the pumps bypass and potentially starve the engine for oil. Some of the solutions are to use the very large truck filter like the Delco PF932 two quart filter. Or a remote adapter running dual 1 quart filters. The other way of course is to drop the viscosity to something in the 0W-5 range to get an oil thin enough the standard filter at least when clean and new poses little restriction. Anything else is just asking for trouble.

Bogie

 

you are only asking for trouble if you use a junk cheap filter and don't look at your oil gauge, you'll see a lost of oil pressure on the gauge way before the filter is plugged enough to force the oil pump bypass full open..
sure if you are using the smallest filter that spin on the adapter you'll be asking for problems..

 

yes, odbogie is spot on. If you remove the bypass in the filter adapter the oil pump becomes the defacto bypass because there are a number of occasions where a single filter cant flow enough volume. The filter bypass saves your engine when your filter become restricted by debris or some other anomaly. I run a non-bypass or a few hours during break in and keep a close eye on oil pressure. Then I change the oil, filter and switch out to a bypass OE style filter adapter.

 

OKay... So the answer is a oil filter adapter with an upgraded bypass does not exist?

 

The answer is it does, do to remember the pn though. And a plugged bypass with an adequately sized filter is still the best option.

 

I am still curious about a part number if anyone happens to know if this part actually exists.

That being said, I called the machine shop that built my engine. Builder recommended I run an adapter with a plugged bypass and even is going to give me one for free. Woohoo!

I am running a high pressure standard volume pump. According to the builder, if I run a standard adapter with built in bypass, it will be stuck open all the time due to increased pressure from the pump.

This makes sense to me and is what I was afraid of and why I wanted an adapter with a higher spring pressure for the bypass.

 

He also stands behind NAPA GOLD filters.

 

My question is who runs an oil filter until it is so clogged that one needs a bypass?? Now having a bigger filter is a good thing such as on a remote system as some cars do not have a lot of room under there for a larger filter..

Sam

 

It's not just for clogged filters, although it's possible for a filter to clog up very fast if you ever get coolant in the oil, for example. The bypass can be enough to save an engine in that case. Plus, if you're running thick oil, the filter (depending on size) might not flow enough when the oil is cold, so letting it bypass if needed during warmup is fine. If the bypass is properly set up, it'll require enough pressure drop across the filter before opening that it stays closed in most normal situations.

 

So the question remains. Is the factory bypass set up correctly for an engine with increased oil pressure? My builder said that it is not and would be stuck open with a high pressure pump. Since I cannot find any adapter with an UPGRADED bypass running no bypass at all seems like the best option. Although I do agree with you about if water gets into the oil a bypass could save an engine....hopefully that never happens.

 

if metal gets into the oil a bypass could cause immediate engine failure. If water gets into the oil the pressure may gradually drop...

Running a higher capacity filter helps all the way around- only draw back is requiring an extra quart of oil at oil changes.

 

The builder did say to run a WIX filter but also said running a 2qt would be unnecessary although probably wouldn't hurt.

I picked up the free of charge plugged bypass adapter today. woohoo!

Just for note, the builder said they plug the bypass on any engine with a high volume or high pressure pump. Daily driver or weekend warrior the bypass gets plugged.

 

Correct me if i'm wrong but I do not believe WIX makes an SBC filter with a built in bypass.

 

why would any filter itself have a bypass...
anti drain back valve yes,, bypass.. ??????????????