- Location
- Ballyclare Northern Ireland
Would anyone on here know where to take the oil feed from that it wouldn't need the extra filter?
MF 290 Turbo filter
- Thread starter Richard98
- Start date
@shumungus
Oil feed on this one comes from the oil pressure switch orifice in the block. T piece screwed in,switch in the end and pipe going to turbo.
I assume that the sump has been drilled and tapped to accept a fitting for the return oil.
Would also expect that the oil enters the pump,goes through the filter housing into the filter and continues to everywhere else. Surely all the pressurised oil will go through the filter first before going anywhere else?
Only what goes out of the relief valve will be dumped directly back to the sump...
Oil feed on this one comes from the oil pressure switch orifice in the block. T piece screwed in,switch in the end and pipe going to turbo.
I assume that the sump has been drilled and tapped to accept a fitting for the return oil.
Would also expect that the oil enters the pump,goes through the filter housing into the filter and continues to everywhere else. Surely all the pressurised oil will go through the filter first before going anywhere else?
Only what goes out of the relief valve will be dumped directly back to the sump...
Attachments
- Location
- Ballyclare Northern Ireland
Thanks very much for the photos @agrimax. Yes I would expect all pressurised oil to have gone through the filter first. Taking the oil feed off at the pressure switch will be a good idea as if there is any issue with turbo oil feed the switch is right there to alert you. As concerns oil return I was going to use the sump bung hole as I think there is one on both sides.
- Location
- Ballyclare Northern Ireland
That type of a hose would be better made out of silicone wrapped in braided stainless steel. If it burst at full chat mixing slurry there wouldn't be much left of the turbo or engine by the time you came back to fill the next load.
Indeed it would. In this case,it goes below the fuel tank and just lies on top of the rocker cover. Really didn't think much about it til today as that's the way it's always been.Might suggest to the owner that it would be better replaced as that type of rubber is bound to be hard and susceptible to cracking by now!
Cowabunga
Member
- Location
- Ceredigion,Wales
Many turbo conversions to the 236 and 248 returned the oil to the plate on the opposite side to the injector pump on the timing cover. This was removed, a hole drilled and a 90 degree elbow brazed to it and the flexible hyraulic pipe return line threaded to it.
- Location
- Ballyclare Northern Ireland
Would rather have my turbo oil drain going vertically straight down from the turbo and as short as possible to keep oil back pressure to a minimum.
Cowabunga
Member
- Location
- Ceredigion,Wales
Back pressure implies a restriction or back pressure. There is none from the timing case and the oil goes basically down. It was never an issue. Up to you if you wish to go another route.
High pressure hydraulic hose is what most installations use[d]. There isn't actually much oil pressure in that line anyhow and not a fraction of 5000psi which the hose is usually rated for. The normal oil pressure in the engine maxes at about 70psi and the restricted oil flow to the turbo means that line and the turbo bearings should be at a lower pressure, probably about 10psi.
The hose used to feed oil in the picture isn't even a high pressure line and is only held by a jubilee clip. I would use standard hydraulic hoses direct to an elbow on the bearing housing. A ¼" pipe would be fine but ⅜'' maximum. The drain can be any ½" low pressure oil hose.
- Location
- Ballyclare Northern Ireland
A burst hose in that situation is not going to be caused by internal pressure its going to be caused by hot manifolds or engines melting the hose from the outside. The feed hose isn't going to be at 10psi as the flow restrictor in a journal or ball race turbo is machined into the mounting flange. Feed hose is going to sit at 40psi as that is normal oil pressure any lower and the oil light would come on. Hyd hose either SAE2RT or even SAE1RT are unsuitable in this application as pressure wise its overkill, they are unflexible and they have no outer heat protection, that is why a silicone hose wrapped in stainless steel braid is now commonly used, heat is the killer here not pressure. Black SAE2RT has a max working temp of 130 degrees vs silicone stainless at 300 degrees.
As a lot of turbos now (especially cheap Chinese journal ones) have no oil seals on the main shaft it takes only an uphill run of return pipe or a slight restriction to cause oil loss through the housing/shaft interface leading to at best a damp spot and at worst fire, so you want that turbo draining as free as possible.
Cowabunga
Member
- Location
- Ceredigion,Wales
Obviously you need to route the hose a few inches from the manifold and turbo housing.
Hydraulic hose is what TB turbo used and there was zero issue. It and fitting are available almost everywhere locally. Who said anything about returning oil uphill?
As I said, do what you want. Mine are only suggestions. Make as much a meal of it as you like.
- Location
- Ballyclare Northern Ireland
You just don't like it when someone has a different point of view
. As for making a meal of it this is only a distraction project but I do intend to do it right and am open to other peoples ideas and suggestions and as ever have learned useful things from posting a question on here, so thanks to everyone so far for their contributions .Sorry @shumungus I'll try again! let me know if they still don't work and I'll think of a different way to get them to you
- Location
- Ballyclare Northern Ireland
You just don't like it when someone has a different point of view
Ideal@Richard98 That has worked perfectly this time, thanks very much.
I'm afraid I can't really help on the pipe routing front other than getting you more photos, but I do know this one pulls well and sounds a treat too with the turbo! near 8500 hours and never missed a beat. the story goes that grandad bought a 690 that was a dog and couldn't pull a skin off a rice pudding, so after about a year Massey took it away and brought them a 290 with turbo. it was so good they bought a second one 6 months later though unfortunately one got traded in long ago. dad tells me it was something special hearing the pair of them working side by side ploughing and cultivating
- Location
- Ballyclare Northern Ireland
Think a lot of mine too, has to be one of the most hard wearing tractors I know. Approaching 19000 hrs and is going to be restored but still expected to work, its duties are diet feeder and slurry pump. Engine will be away for a full rebuild so I thought I would perk it up a bit when it comes back as its on its knees most days. Hydraulics, PTO pack and gearbox has already been done last Autumn.
Cowabunga
Member
- Location
- Ceredigion,Wales
You can any point of view you like, yet didn't know where to get the oil from.You just don't like it when someone has a different point of view
That's using hydraulic high pressure pipe for feed and a larger low pressure hose for the return, exactly as I described. The only difference is the different choice of the return entry to the crankcase, which is fair enough.
- Location
- Ballyclare Northern Ireland
On a Perkins 4.248 engine there are numerous places to pick up pressurised oil but hadn't thought on sharing it with the pressure gauge until it was suggested here, this only works if there is a suitable restrictor on the turbo and in this case there is
. Sod all to do with point of view but has to do with having an open mind and accepting the ideas of others if they are better than your own.Not a thing wrong with the setup in the pictures and how long it has lasted is testament to that, but that is circa 1986 engineering and materials and technology have moved on since hence the silicone braided hoses and wastegate turbo, keep up man. And I must say I like the may the oil return pipe goes straight down to the sump.
No doubt you will continue with this as you like the last word but I fear we are getting off topic, so I will leave you to your search engines and I must go and lamb a ewe or two.
Cowabunga
Member
- Location
- Ceredigion,Wales
I am precisely on topic.On a Perkins 4.248 engine there are numerous places to pick up pressurised oil but hadn't thought on sharing it with the pressure gauge until it was suggested here, this only works if there is a suitable restrictor on the turbo and in this case there is
Not a thing wrong with the setup in the pictures and how long it has lasted is testament to that, but that is circa 1986 engineering and materials and technology have moved on since hence the silicone braided hoses and wastegate turbo, keep up man. And I must say I like the may the oil return pipe goes straight down to the sump.
No doubt you will continue with this as you like the last word but I fear we are getting off topic, so I will leave you to your search engines and I must go and lamb a ewe or two.
The earlier Opico turbo installations used a stainless braided hose. There are a multitude of parts that are suitable for use. You were dead set against my suggestion of the hydraulic pipe oil supply hose when I suggested it, yet now you've seen it in a picture you reckon it is a testament to its longevity.
You just like being contrary it seems to me.You and your 'search engine'
You don't find the knowledge I freely share on search engines.