allcool

Anyone know the best way to disable the canister bypass..? And is this a good idea..?

DBJoe996

Get the LN Engineering spin on oil filter adapter and then you don't have to worry about it. And, no, I don't think it would be a good idea in the OE canister type filter. Just my two cents...

996-CAB

I believe the reason there is a bypass is because the canister isn't designed to withstand the possible pressure if you did.

allcool

True, the LN spin on adapter is nice, but Ii kind of like the oem canister filter.

Others have done it without problems afaik..?

Porschetech3

Right now on Sally I have the spin-on filter with LN adaptor ( and also a "sandwitch spacer") because I wanted a place to put extra oil pressure and temperature sensors in the system to hook to AIM Data system...

But I have ran Sally for over a decade with the by-passed OEM canister filter. I popped out the by-pass valve/spring/cup and filled it high temp two part epoxy...

I prefer the cartridge filter due to more filter area and no cutting open a metal can for inspection.....after 1000's of small and large cuts from sharp edged metal in 45 years working in the Automotive world and Racing world I tend to prefer to stay away when fesibible...

Nothing wrong with either one but I do NOT like the OEM by-pass location in the BOTTOM of the canister,period. It is where any metal particles will lay and flow if/when the by-pass opens..

Personally I think a billet aluminum canister with "no by-pass" to fit OEM style cartridge filters would be " IDEAL,", but I don't know "the market" would agree.($$$?)....

allcool

Thanks...!!!

Exactly what I'll do. Think JB weld is good to use..?

Porschetech3

Back in the old days when epoxy's were just invented, we used them to strengthen engine block cylinders ( for 6 second Drag Cars) by filling the water jackets around the cylinders with Epoxy.. Devcon A was the go-to Epoxy back then for this purpose..

Epoxy has developed a bunch since then ( and gotten less expensive due to demand),

Several Epoxys will perform but my recomendation would be this j-b high temp 550* https://www.amazon.com/J-B-Weld-High-Epoxy-Syringe/dp/B09Q8DQLJ2
EDIT::
Also FWIW ;; There are two by-passes in the oil pressure cicruit that needs to be understood.....

The main oil pressure by-pass that is located in the oil pump housing, it controls the oil pressure to keep the pressure down to a safe minimum..

The second by-pass that is located in the oil filter/canister. It "by-passes the oil filter" ie allows un-filtered oil to flow "around" the oil filter.......It's job is to sence a pressure diffferential across the oil filter, and if the oil filter can not flow enough oil to keep the differential low, it will open and allow unfilter oil to flow "around the oil filter" thereby by-passing the filter.. THIS IS NOT A GOOD THING IMHO .. It is only there encase the oil filter gets so dirty it can't flow enough oil, or the filter itself can not flow enough due to design/material...

And as far as strength goes, I have seen plenty of metal spin-on filters burst ( especially Fram, some are 3x better like WIX) when the main by-pass sticks, but I have never seen one of the plastic canisters burst under pressure...I don't know how much pressure it would take to burst the plastic canister, but it would be a LOT...

Coopduc

Here is another good solution
https://rennlist.com/forums/996-foru...o-spin-on.html

Mike Murphy

Yeah, you’d think if an owner got their filter to that point, they’d deserve the canister to burst and let oil out all over the ground instead of circulating debris throughout the engine. Besides, if the filter was that dirty, and the bypass needed to be opened, would a non-trivial amount of dirt get released anyway?

I had always just assumed these bypasses were for very cold engines that were rev’d high.

theprf

ECS Tuning makes such a part for Mezger oil filter housings and for VW VR6 oil filter housings. With the number of vehicles that use the M96 type of filter perhaps they would take it in as a project?

allcool

I also prefer the oem cartridge filter for all the reasons you mention. I will find one of my old canisters and pop the valve out, fill with your recommended epoxy and magnets and call it a day. Thank You...!!!

To me, can't see how the spin on adapters are beneficial, other than a faster oil change at the cost of not being able to easily see the filter pleats and a smaller more easily plugged filter media. Just another place for a possible leak. Unless you need an aux oil pressure port for a imsb solution or a oil pressure gauge/etc.

With the oem oil pump bypass set @5bar, doesn't seem possible for oem canister to burst at 5bar max pressure the OPB allows. Has anyone ever seen one burst,? seems the polyurethane type plastic is stout and maybe more robust than beer can thick spin ons.

The billet canister sounds neat but its mostly bling imo, as the oem one with your bypass delete and your magnets, is identically sufficient imo. The M96 engine isn't my idea of an engine I want to dre$$ up. I'm not one to put lip$tick on a pig and call it Gal Gadot...

jmo

khyatt

I learned recently that Porsche recommends you replace your filter housing every two years or something to keep the bypass functioning optimally? This sounds lame, but it's only $30 and comes with a factory filter element installed already.

99610702055 is the part number.

I wouldn't get rid of the bypass on a canister filter, but understand people's reasoning for wanting to.

Mike Murphy

It’s possible that people who aren’t Porsche experts doing oil changes might accidentally throw out the bypass when they do an oil change and not realize it.

Porschetech3

Exactly !! I have seen it more than once when using "off-brand cartridge filters" . The filters fit too tight and when removing the filters it pops the by-pass out of the canister and is thrown away with the filter...This causes "ALL ThE OIL TO BE UNFILTERED "...This is even worse than having the by-pass in the bottom that opens and allows debris to circulate...

I would surmize that more than a few engines have been ruined by this occurance...." Please pay attention to this !! "

URO Support

Hi Porschetech3, this isn't exactly what you're looking for, but it's in the neighborhood: URO Parts Oil Filter Cover 996 107 020 55-PRM. Still has a bypass, but the cover is 7031 aluminum instead of PA66 nylon.