oil cooler adapter port question

[bj]

Hey folks...

it's been quite a while since i've posted on here...though have been back from time to time looking around.

that being said, i'm now working on my bug after almost 10 years of sitting...waiting for kids to grow up a bit and get my garage built.

i have a DTM conversion for my type 4. I'm running an external oil filter mount with an external Derale oil cooler. My question is which port on the oil cooler adapter should i be feeding my filtered/cooled oil back into?

Oil pump -> Oil filter -> oil cooler -> engine oil cooler adaptor....but which port?

my adapter is similar to this one : https://www.csp-shop.com/en/offers/oil- ... 4230a.html

thank you.

BJ

[Clatter]

Heyman, welcome back!

Looks like you just need to eyeball the ports on that thing and follow the flow.
Oil comes out from the pump and it’s passage,
Then back into the case and main oil galley.

You’re going to want to duplicate the original flow just with a different route around.

Looking at the old factory filter adaptor will show direction.
Oil flows into the filter can on the outside of the element,
And out of the can thru the middle.

Hope this helps.

Got any pics of this thing?
Been wanting to see it forever!

[bj]

hey...thanks for the input. I was able to find the answer in Jake's archived forum. basically I have a DTM V2 and am full flowing to a filter and setrab cooler.

the feed to the engine goes through the top port of the oil cooler adapter.

Not sure how/where to post pictures. i think i'll upload to TS and link here maybe? not sure if that's allowed...

thanks for the input though.

BJ

[bj]

Ok...did more looking and even tried chatgpt...

i'm confused as it now seems the bottom port is the direct feed into the case bearings.

here's a picture of my adapter.



i also messaged Pile directly too see if he could help me.

thanks.

BJ

[bj]

just wanted to give an up and potentially close this question for full flowing type 4 engine.

After researching/searching, talking with Pile (thank you by the way!), and looking at a bare 914 case, i've come to the following conclusion for my current setup:


i should have just fed the engine from this port, this will utilize the stock pressure relief and still feed the mains:


but...because of my setup and that my engine is already assembled and broken in, i'm using the bottom port of the oil cooler adapter now (pic above is wrong and i've since moved it). I wasn't sure if this was correct (long term) as the engine was successfully broken in using the bottom port. This will also
still somewhat have the oil relief in play, but I think it should be ok as the other ports on the adapter and galleys are plugged.


If the "engineered leak" is an issue, i'll try to replace the relief valve to something like this to further restrict "leak".
https://www.coolairvw.co.uk/product/csp ... k-off-kit/

not sure if this helps anyone, but posting just in case .

Thanks again Pile!

Aloha all.

BJ

[GARRICK.CLARK1]

I also got this info off Pile . Mines been in use for 10 years.

[bj]

thanks and good to know!

BJ

[Piledriver]

I got the info from Jake Raby, bought a few parts from him, full flow kit, oil pump, bolt kits, pushrods etc.

The biggest thing about any full flow setup is you do not feed the external filter/cooler setup from the oil cooler ports.
(ideally, don't use it at all) you want the oil to the filter etc direct off the pump, I made a block that went where the original filter mount was for the outlet on one setup with an outlet, an empi cast iron cover with an outlet on another (with a plugged pump)

One of the misfeatures of the OG oiling system is most of the oil is bypassed by the pressure relief setup, returned to the sump without going through the oil cooler. If you use the oil cooler ports for the filter AND cooler, unfiltered oil also gets returned to sump. (stock T4 setup has full flow filter right off pump outlet) and the cooler may not see much flow at all if you have long lines, as you are at the whims of the factory pressure based oil "thermostat".

If you have an ideal setup: pump based overpressure for cold starts (Berg cover) and external pressure relief (with return to sump) and oil thermostat, there are ways to ditch the internal pressure based "thermiostat" and pressure setup, which can have issues. (but for most stockish applications (with stock cooler) it works fine)

Part of Rabys full flow kit was a nice radiused cast brass 90 degree fitting for the return to the main gallery, better flow . (this was real brass or bronze not the thin modern Chinesium sold at home depot)

Early engines also got a secondary relief piston with an actual "secondary leak" built in, shown in the bottom left of the above diagram, at the very "end" of the oil system, just above oil sump.

Its a ~10mm or so relief piston/spring with a small drilled hole in the piston, I always assumed the hole was to allow air a way out on startup or if you sucked air hard cornering.

If you have one its under a big ~12mm 12 point triple square socket head screw, right side of case (facing the pulley) this went away on later cases, IIRC Jake replaced the spring with a short aluminum spacer.