the real importance is that a quality filter is used, that is up to the rigors of filtering oil full of soot.
there is a cat filter that will spin on, and filters much better than the stock one(but I dont remember the filter number)
as for the bypass, almost all engines(and certainly our diesels) have full flow oil filters with a bypass valve. the valve is designed to open if not enough oil is going through the filter(during cold starts, or if the filter clogs) so the motor does not experience oil starvation.
and the drainback valve he removed should not be too much of an issue, as the filters themselves for the diesel have a drainback valve in them.
also, I will bet that the rod knocks he got were from oil starvation in high angle situations, so I would recommend building an extra deep oil sump with plenty of baffles to keep oil at the pickup tube.
-Owen
I ran a ford one on my old gold rabbit and the oil light always came on. I was trying to cheap out on the filter as they are 1/2 price of the VW ones and this was long ago. I think our VWs do oil in reverse or something different. I heard that many times before on the gasser VWs being different then our diesels. I have NO AUTHORITY on the subject, just passing the gossip from what I have heard. I do know the ford one has a bypass spring that is around 17 psi and the vw diesel ones are around 40psi...at least the ones I have seen #s on.
I hate on Fram, but if I don't have a Mahle on hand all my parts stores have is Fram. The HP1 and the other Ford Gasser one don't work for our stuff like I said above. The PH3569 does and in a pinch I will use it. The only weird deal I do is use the spin on TDI filter now. Autohaus has them (068115561E) and they have better stuff inside than every other filter I have ran on these VWs.
I just would hate to see the OP in a hole at redline and not getting enough good clean oil especially after going to all the trouble with his new mount. Good luck with your stuff man.
Vws do not oil in reverse, nor does anything else that I'm aware of. For the filter to work correctly the oil has to enter the outide ring of holes and leave through the middle. To the above poster, I don't see how the oil light being on all the time could have anything to do with the filter itself.
I don't want to get into a mess. Like I said " I don't know only going off what I have heard " in the above post.
If I put the Ford filter on the old gold it would turn the light on. If I used the VW filter the same car...same oil even I didn't see the light with the engine running.
Good Luck to the OP.
i have one more question. is it possible if i cut off the piece shown in the photo and mount the filter straight on the filter mount, without oil cooler? it's quite cold in here now so there will be no problem with overheating. i want to check everything and i know that sometimes oil cooling "sandwiches" leak, so i want to exclude that problem at first, and after few hundred miles i will mount the cooler again... p.s. i haven't started the engine yet
http://www.vwdiesel.net/forum/index.php?topic=25435.0
it's a really good alternative for stock oil cooler (plus i have mitsubishi pajero oil radiator) and i think i'll get this thing in the future...
and before i get i will run the car without stock oil to water cooler, anyways it will not overheat during the winter (i hope so
)
I heard the ford filter has a 10 psi bypass, Drop more than 10psi across the filter and it will go through the bypass valve and into the engine.
and our diesel filters have a 30 psi bypass.
i have one more question. is it possible if i cut off the piece shown in the photo and mount the filter straight on the filter mount, without oil cooler? it's quite cold in here now so there will be no problem with overheating. i want to check everything and i know that sometimes oil cooling "sandwiches" leak, so i want to exclude that problem at first, and after few hundred miles i will mount the cooler again... p.s. i haven't started the engine yet
unscrew the long nipple, and screw in the short one out of a filter flange with no oil cooler.. problem solved..