variable oil pressure

[SloopJonB]

Originally Posted by justonemoreproject

That sounds like a good idea, because I have been wondering how I would hook up a remote filter filter to the element filter cover. I was thinking i might have to take the cover to a machinst and get a male thread put on it so that i could screw the hose that would go to the remote filter onto it. I didn't know where I would put the return line. I am wondering if there are fittings on the engine that I could use. Thanks - Larry

That's what I referred to when I said you might have to tap for fittings. You won't do it through the COVER though. If you take the cover off your filter housing and look inside, you will probably see two holes in the "top" of the housing - actually the far inside end in your case. One is for the incoming (unfiltered) oil, probably off to one side and one for the outgoing (filtered) oil, probably on center. This is the case in most filter housings. The normal route for the oil is to enter the housing on the perimeter, OUTSIDE the filtration media, get drawn through the media and pumped back into the oil galleys up the middle of the housing. The oil pump is actually SUCKING the oil through the filter and back up into the engine - it doesn't actually start getting PUMPED (pushed) until it gets sucked back to the pump. If yours is like that, you will have to tap them for fittings that will accept the pressure hoses that you will attach to the remote filter housing.

You may find some bits & pieces - springs & so forth up there - those will be the over pressure bypass on an old element style filter. They will not be needed on a spin on style as the bypass is built into the filter cannisters now.

Find a manual or a PDF of an engine oiling diagram and you will see the flow path very easily. The Chevy small block has a very simple and supremely effective oiling system - try to find a diagram for it.

Also, as I said before - contact Lister/Petter and ask them about changing to a remote setup - it may save you a lot of grief.

[justonemoreproject]

Hi,
I have been in contact with Lister Petter. They do not have a remote oil filter kit. They did send me a diagram of the oil filter assembly. I tried to upload it for you to see, but I keep getting an error message that says its an "invalid file". If you give me a PM I could send it.
I am going to the boat now to install the back-up gauge and check the sensor. After that I am going to tackle the beast that I said I would never touch again. Wish me luck!

[justonemoreproject]

I read your post again. Unfortunately I probably won't be able to see inside unless I can get a mirror down there at the proper angle. Also, unless I took the motor out of the boat, there is no way that anyone could tap threads in the back of the filter. So unless I could install a filter using the drain plug hole and an existing hole near the rocker arm as someone else suggested, I am SOL and have to just change the filter as I did the last time.

Why couldn't I take the cover to a macinist and have them tap that for hoses to a remote filter? That seems to be the only other choice.

Thanks for all your help.

Larry

[SloopJonB]

Originally Posted by justonemoreproject

I read your post again. Unfortunately I probably won't be able to see inside unless I can get a mirror down there at the proper angle. Also, unless I took the motor out of the boat, there is no way that anyone could tap threads in the back of the filter. So unless I could install a filter using the drain plug hole and an existing hole near the rocker arm as someone else suggested, I am SOL and have to just change the filter as I did the last time.

Why couldn't I take the cover to a macinist and have them tap that for hoses to a remote filter? That seems to be the only other choice.

Thanks for all your help. Larry

I PM'd you for the diagrams. The problem I see with just tapping into the cover is that you'll have an empty filter chamber with an input hole and a suction hole at the far end - the oil will enter the chamber, fill it and then start getting sucked out the suction hole, just like if you ran it without the filter element. Having input & output lines plumbed in the cover at the other end won't do anything because the whole filter chamber has become a big bypass valve - there's nothing pushing or pulling the oil through the remote filters, they'd be like an ox-bow on a fast moving river. You have to actually connect to the oil galleys in order to be "in" the pressure circuit and the filters only operate under pressure.

The system you describe - sucking out the drain and reintroducing the oil in the rocker cover has two problems - one, you'd need an external oil pump and two, pumping the pressurized oil into the rocker box won't do anything for for the main, connecting rod and cam bearings - they have to be supplied with high pressure oil to their bearing surfaces, through the oil galleys. Spraying pressurized oil into the rocker box and letting it drain down won't do that.

[Rockter]

Why not grind a bit off that engine plate so that you can get at the filter?

[TQA]

Most of those engines were in cement mixers and mowers where access was not an issue.

[justonemoreproject]

Hey Rockster,
Great minds think alike. My Moma always said, "Never leave home without your grinder".
Not knowing why, I took it with me yesterday, and then came to the same conclusion you did and ground a 1 inch notch in the plate that blocks access to the filter. I had to remove the alternator first for access. That was just enough to slide in the filter.

I also installed the additional gauge on the engine sump. It read a steady 50 PSI. Apparently the sensor lags when I make an RPM change. I was told that a new sensor has to be the same resistance as the original. I'll work on finding one.

Anyway, thanks for all your help. I really appreciate it.

[hellosailor]

justone-
I'd vote against a remote oil filter kit even if you could find one. You've never seen a true oil-soaked disaster until you've seen what happens when one of the many fittings to a remote filter gets loose, or a hose chafes, and that remote oil shoots all over under pressure. It isn't a pretty sight.
If you take an oilzorb cloth, or even a disposable diaper, and spread that out below the filter area, that's a good way to start. Then drape a plastic shopping bag "under" the area of the cap, it will catch a lot of oil and you can conveniently drop the old filter element into it, tie it up, use the diaper to wipe up anything you missed.
That should make the spill and cleanup into a real simple job.

A socket wrench or small breaker bar with a universal joint at the end, and one socket to match that fitting (it is a square bolt type?) should also make the access fairly simple. If you aren't familiar with odd tools--take that picture into a store with you, because there are all sort of tools that make working in odd places much easier. And if there's just a little bit of the steel plate blocking direct access to that bolt? A bastard file or a grinder, 3-4mm of metal removed, no more problem.

Sometimes you DO have to wonder, whose unemployable nephew was given the job of designing some of these things, and why he couldn't have been sent elsewhere.

[SloopJonB]

Originally Posted by hellosailor

justone- I'd vote against a remote oil filter kit even if you could find one. You've never seen a true oil-soaked disaster until you've seen what happens when one of the many fittings to a remote filter gets loose, or a hose chafes, and that remote oil shoots all over under pressure. It isn't a pretty sight.

Shouldn't happen unless a cheap conversion was used or hoses were let go. Nearly all forms of racing that use wet sump oiling have remote filter setups, usually the dual cannister type.

Sometimes you DO have to wonder, whose unemployable nephew was given the job of designing some of these things, and why he couldn't have been sent elsewhere.

If you lived in the Colonies you'd know what happened. When they became too much of an embarrassment to the family they were sent to the colonies and sent a periodic remittance of funds, dependent on their staying away from family, friends and the mother country. They were found throughout the old British Empire and were known as "Remittance Men". They tended to be playboys, gentlemen farmers or wastrels, depending on the size of their remittance. They tended to originate in such circumstances as; defrocked priests, disgraced military officers, aristocrats accused of crimes etc. I don't know how many of them were automotive or marine designers or engineers but that should have accounted for many of them. Apparently there was a small "colony" of them around Duncan on Vancouver Island.

[Rockter]

Juston :

Well done. I am pleased for you.
You really must filter the oil on a motor. If not, it slowly emasculates it.
It will take out all the bearing surfaces in concert.
.