Everything you need to know about oil lines.
 

ok guys ive had some questions through msn etc.. on oil feeds blah blah blah.. i decided to copy out an article from maximum boost. the end part is me though :)

anyways lets GO!

Selecting a lubrication oil.

Heres what u need to do : first, get a feel for what the lubricant is supposed to do for your engine and what special requirements your situation imposes on the lube. These data will tell you what type of oil will bes fit your needs. Second, consider the climate and operating conditions the lube must endure. This info tells you what viscosity and level of severity luve will best do the job. In gerneral it is best to avoid wide range multiviscosity oils, as the materials added that create the multiviscosity capability are the same materials that cause coking. Thus 20w-50 is clearly better turbo oil thean 10w-50. a straight viscosity is best of all, with a ten point higher viscosity in summer. If it is possible to determine the detergent tating and antioxidizing rating, good turbo oil will be high in these two categories.

Now you know the type and grade of luve that is best your best choice. The one remaining factor is the brand to buy. This boils down to availibility, price, and what your R&D efforts tell you is the trule the lubricant for your engine. One can be relatively certain that an oil formulated for turbo use, and so advertised, will be an adequate lubricants.

Types of lubricants.

There are two choices here: synthetic based or mineral based lube.

Synthetic lubes are manufactured fluids in which the basic structure of the lub is much more ridgitdly controlled than in standard hydrocarbon oils. The resultant product is a very consisitent stable fluid with uniform molecular structure whose properties are highly predictable. Sunthetics have clearly demonstrated their capability with the respect to frictional losses, high temperature stability and basic toughness of the molecular structure. Mineral based lubes are less expensive and more likely to coke.

Water cooled bearing housings

The turbo bearing housing with a water jacket around the bearing chamber has virtually eliminated the problem of oil coking. The cooling capability of the watyer is such in that the oil seldom reaches the temperature at which it begins to break down. Of course all oil subject to high temp use breaks down slowly over time so the need for periodic oil changes still exists. The oil change interval thus becomes slightly less than with an atmospheric engine.

What is coking?

Coking is nothing more then than charred oil residue accumulating in the turbo bearing section to such an extent that the proper flow of oil to the bearings is eventually blocked. The seriously compromised oil flow will kill the turbo in no time. Four things gang up on the turbo to cause a coking problem.

-Oil with inadequate high temperature capability
-Oil with a wide multiviscosity range
-Extended oil changes
-Excessive heat in the bearings

Oil flow and pressure requirments


The turbo survives with surprisingly low oil pressure and flow. Is is virtually certain that all engines in production have enough excess oil pumping capacity to adequately take on the additional load of a turbo.

To much oil pressure can creae problems with turbos. It is possible to force oil past the seals that are in perfect condition if oil pressure exceed 65-70psi at the turbo. If your engine has these high of oil pressures a bypass or a restrictor (needle valve) can be used.

Problems of oil pressure over powering the seals are evident in a frequent smoking problem.. anytime oil exceeds the 65-70psi and smoking arises put a needle valve or bypass in.


Oil coolers.

Don’t be hasty and just go buy these cause every other kid has one. Oil prefers to operate in a given temperature range that supplies the viscosity needs for protecting the engine, doesn’t overheat the oil in the high end and when cool doesn’t add more drag to the system then necessary. These requirments are all easily met by the right oil type and viscosity operating in the correct temperature ranges.

Mineral bases oils are not as tolerant of high temps as the synthetics oils. For street engines, both synthtic and mineral based oils have the same lower temperture requirement (150F min), but synthetic can operate about 40F higher (270F) therefore, you may need an oil cooler if you use mineral based oil and perhaps not if you use synthetic.

It need to be understood that oil temperature below the these mininum will degrade durability just as surely as exceeding the maximum. The installation of an oil temperature gauge will tell the whole story. Do that before installing an expensive oil cooler system. There are occasions when both oil and water temperatures are on the high side but neither is out of bounds. The best oil cooling system would be a system controlled by a thermostat that directs oil to the cooler when at a certain temperature.

Oil filters

The turbo creates no special filtering requirments.

Oil to and from the turbo

The plumbing that feeds oil to the turbo and drains is back to the gnein is perhaps the weak link in the entire scehem of turboing. This is definalty the place for a fifteen cent part to fail and have oil spewing all over the ground and wreck your entire motor. Don’t cheap on on the feed and return lines, if you do you could pay in the long run.

The oil lines feeding the turbo must meet pressure and temperature requirments it will endure. Also make sure it is hydrocarbon proof because this can cause the line to deterioate fast if not. The best lines to use is a stainless steel braided line with a teflon center, this line is very tough and durable. Another thing to take into consideration is where u have ran your stainless feed line. DO NOT have it rubbing on anything because the line will eat right through whatever it is.

The drain line is often overlooked and cheaped out on, this line is very important as it is just as vital as the feed. If this line is not straight down towards the pan it will foam up and cause smoking in the turbo. Make sure the drain line is matched with the hole in the turbo. If the exit hole is ½ your hose should be ID of ½ . When drilling in the pan for the drain hose nipple, make sure this hole is above the oil line of your engine because it will cause backup bad if its not.



Hope this can help some people out because I have found a lot of people do not have a full understanding on how important the oil feeds are. Don’t skimp on this stuff.

Re:Everything you need to know about oil lines.
 

Gosh jordan your so smart.. ;D

-CF

Re:Everything you need to know about oil lines.
 

put that in your pipe and smoke it.

Re:Everything you need to know about oil lines.
 

Was that from "Maximum Boost" ?

Re:Everything you need to know about oil lines.
 

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Re:Everything you need to know about oil lines.
 

::)

Re:Everything you need to know about oil lines.
 

I didn't read it very closly just scanned it. Mah Bad dawg ::)

Re:Everything you need to know about oil lines.
 

Great stuff man. I'm glad to have read this while completing my turbo set-up....

Re:Everything you need to know about oil lines.
 

nice man. I'll take those in consideration when building my turbo kit

Re:Everything you need to know about oil lines.
 

man that helped alot. i have a probe turbo what size feed line should i use. mine keeps blowing off the fitting and spraying my car in oil. this is my 3rd turbo car and this has never happened.

Re:Everything you need to know about oil lines.
 

i would suggest a tighter hose clap, maybe lowering your static oil pressure

Re:Everything you need to know about oil lines.
 

Also make sure the CHRA isn't coked up so bad it's clogging.

-Michael

Re:Everything you need to know about oil lines.
 

are there differant sized lines for differant sized turbos, ie tdo5h, tdo5e

Re:Everything you need to know about oil lines.
 

u use an adapter like -3an to -4 whatever line u buy..

Re:Everything you need to know about oil lines.
 

well that makes sense, are there differant flow rates tho

Re:Everything you need to know about oil lines.
 

So you're saying if you go from -4an to -3an somewhere in your oil line that it will help keep the pressure/flow down?

Luckily my RHB5 turbo has a banjo bolt with a restrictor hole.

Re:Everything you need to know about oil lines.
 

Sweet write up! Very nice info there.

Re:Everything you need to know about oil lines.
 

http://www.-------------/carpics/option2.jpg

This is a screen capture of an order at www.mcmaster.com for an oil feed line setup that includes everything you need to T off the firewall instead of the back of the Honda block like many do.

Safer and for the price hopefully it passes the likes of the HMT crew...

Part numbers are in the screen shot for your ordering convience ;)

Re:Everything you need to know about oil lines.
 

good stuff xeno!

Re:Everything you need to know about oil lines.
 

Where is there engine oil coming from the firewall? ???

Re:Everything you need to know about oil lines.
 

You run a line from the back of the block to a distribution T fitting which is attached to the firewall...and then run it to your turbo from there. You can use the other holes in the T to supply oil to a 2nd pressure guage and/or the stock pressure guage.

Re:Everything you need to know about oil lines.
 

what you didnt know there was oil flowing from there.... ::)

Re:Everything you need to know about oil lines.
 

Re:Everything you need to know about oil lines.
 

How do you run the oil line if your turbo sits very low, almost the same level as the oil pan? Just like how Beau has his turbo setup...will a long oil return hose cok the oil if the turbo is the same height or lower than the oil pan?

Re:Everything you need to know about oil lines.
 

It wont coke...but your turbo flow as much oil and it can blow your seals if that situation continues on...

Re:Everything you need to know about oil lines.
 

u can have a box with a sump oil pump also.. but thats a bit of work :)

Re:Everything you need to know about oil lines.
 

were can i get one of these resticter valves, my h23 makes almost 100 psi oil pres. washing the bearings was the downfall of my turbo, well that and the oil return line clogged and blew all the seals on the exhaust side. if some one knows were i can get one of these restricter valves it would be helpfull

Re:Everything you need to know about oil lines.
 

oh ---- my return line might be a little below the oil level in the pan will this be a definit problem? :'(

Re:Everything you need to know about oil lines.
 

http://www.atpturbo.com/Merchant2/me...egory_Code=OIL

I got a lot of stuff for my turbo system here, good people to buy from.

Ryan

Re:Everything you need to know about oil lines.
 

Yes, isnt the oil pan full to the top or close to it with oil?

Re:Everything you need to know about oil lines.
 

what about teflon tape around the threads of all the an fittings?

is that needed... no one mentioned teflon tape.
chris

Re:Everything you need to know about oil lines.
 

I'm going to add to your post--what you forgot

Oil Pressure-

Some engines generate a LOT of oil pressure. Use an inline needle valve and approprite size feed to regulate pressue

Oil Filter-
No special requirements if you want to take away from the life of your bearings. I've lived through that and never will again. I buy Fram X2 because it's a quality filter and has a larger capacity. Dirty oil is what wears your bearings.

Oil Feed-
Don't use copper. I wouldn't trust it at all. Use aluminum brass or stainless if you're gonna go hard line.

Re:Everything you need to know about oil lines.
 

Many people use teflon tape, but if you get ahold of some permatec or hi temp honda bond that would be best. Ive noticed that teflon disolves in oil and can backup oil lines and at worst can get into the turbo cavity and cause damage.

Re:Everything you need to know about oil lines.
 

Also I meant to ask what was is the lowest oil pressure that your turbo should see. Ive been worried that my turbo might not be getting enough oil pressure at idle. It only sees like 5 or 6 psi at idle. For reference I am running a
-4AN line which is feeding a 16G. Under full boost it will see about 60 or 65 PSI.

Re:Everything you need to know about oil lines.
 

zlthomps, thats prolly fine, the turbo isnt working to hard at idle, so it doesnt need that much temperature reduction by the oil. should be fine.

Re:Everything you need to know about oil lines.
 

also, you may not want to hang a clusterfuck of things off the tee in the back of your block. I've seen people hanging LS/VTEC lines, Oil pressure sending units, and an oil feed line off of the tee, causing it to crack right off. Using the wrong type of threads for the tee will ---- your ---- up too.

Re:Everything you need to know about oil lines.
 

ya that happened to me once... NEVER AGAIN. that was a smoke screeen .. wow.

Re:Everything you need to know about oil lines.
 

I guess this thread would be a good one for a "THANK YOU SO VERY F*****G MUCH" for a great product once again...Thanks Stealthmode/TUNER TOYZ! I appreciate the top notch product for an amazing price...RICE Representing the banners on my ride for a while...(have several turbo minded people around town). Thanks Again...makin turbo dreams happen...and helping to solve oil burn off problems ;)
A REAL Stand Up Company!

Thanks...


Nick

Re: Everything you need to know about oil lines.
 

I don't see oil catch can in there anywhere and I read it other places so what is it and what's its purpose? I thought the oil lines thread would be a good place to post. Thanks!


JP ::)

Re: Everything you need to know about oil lines.
 

More info from Maximum Boost.:
These are good guidelines for virtually all turbos.

Idle, hot Min Pressure 5 PSI, Min Flow(Gal/min) 0.1
Maximum Load, Min Pressure 25 Min Flow 0.5.

They recomend a restrictor with dia .055-.065"