Tubo oiling using OEM injection pump

racin_jayson · Nov 16, 2014

Putting together a turbo kit, and I've been brainstorming ways to lube a ball bearing garrett turbo without using the traditional electric pump and tank method.
The oil injection pump has two bottom fittings that are teed together immediately after the pump as seen in the picture

What would stop a guy from removing the tee fitting, and using one of the outlets to feed the turbo? Doing this would allow me to continue to feed all the case fittings as well as the turbo. For a oil return from the turbo I could just use a small vented oil catch can with a drain valve that I would then have to empty every so often.
Could it really be this simple or am I missing something? I don't really like the idea of feeding the return into the turbo inlet like the MTNTK kits do, but that's just my opinion.

tdorval · Nov 18, 2014

Bd isn't even doing an oil return...

CDK · Nov 18, 2014

tdorval said:
Bd isn't even doing an oil return...

They are just forcing the oil past the bearings into the turbo, correct?

I'm also very interested in adapting the factory oiling to lube the turbo. Much simpler setup, if feasible to retrofit. I'd like to see some pics/details of the current turbo kits that run this type of oiling.....I believe thats just BD and MTNTEK.

tdorval · Nov 18, 2014

It had been mentioned that doing this with a journal bearing turbo would be a bad idea as they require more oil. I personally have no experience here just repeating what was read here.

tdorval · Nov 18, 2014

Another thread has detailed install instructions from bd...

CDK · Nov 18, 2014

tdorval said:
It had been mentioned that doing this with a journal bearing turbo would be a bad idea as they require more oil. I personally have no experience here just repeating what was read here.

I figured it might be too easy....

racin_jayson · Nov 18, 2014

Journal bearing turbos need a lot more oil than a ball bearing, so I think this will only work on a ball bearing turbo, I'm going to try it out on my garrett gt2871. I'll post photos and results when I get it done.

N.A84 · Nov 19, 2014

I was thinking of buying that tank delete kit from bd for my 2012 kit, but now i am not so sure anymore.

Polarisrocks · Nov 19, 2014

Why don't you add a pulse line to the cases and use a small mikuni 15lph fuel pump to feed the turbo, we are trying it this year on our cats because the oil injection is barely enough oil.. pump is 23$ on amazon, adding a pulse fitting to the cases, tricky.. Possible yes...
I am going to air up the motor and turbo system like I am doing a boost leak check with 10 lbs and drill a small hole with grease on the tip of the drill bit.. Hopefully the boost pressure blowes the shavings out the hole and /or the grease catches most of them. Then do the same for a small tap..

LoudHandle · Nov 19, 2014

Polarisrocks said:
Why don't you add a pulse line to the cases and use a small mikuni 15lph fuel pump to feed the turbo, we are trying it this year on our cats because the oil injection is barely enough oil.. pump is 23$ on amazon, adding a pulse fitting to the cases, tricky.. Possible yes...
I am going to air up the motor and turbo system like I am doing a boost leak check with 10 lbs and drill a small hole with grease on the tip of the drill bit.. Hopefully the boost pressure blowes the shavings out the hole and /or the grease catches most of them. Then do the same for a small tap..

Gus Bohne (sp?) mentioned using an impulse pump on here a while back. It was due to the lack of electrical power available on certain sleds. Guessing you still would want a ball bearing turbo. I'm no turbo guru but I would not chance it with a journal bearing turbo.

gus bohne · Nov 20, 2014

If a journal turbo would survive on the oil pressure you have it would work. the pulse pump will produce 3 to 4 psi more that intake boost pressure.
if your running 12 psi then expect 14 to 16 psi oil pressure.. I dont think that is enough to float the shaft in a journal bearing turbo but I admit I have no experience with them.

have a good season guys.. feel free to follow us on facebook, Gus's turbo world. its not for everyone but if your into this outside the box aspect put in a request to join. its closed to public , no advertisers, no mods just sharing and thinking among like minded folks. lots of triples turbos and fun snowdraggers being built. all 2 stroke all carbs all balls out..:welcome::der::second:

wyorider · Nov 20, 2014

Oil Lines

If you take the bottom Right oil line (in pic) to your turbo and take the Bottom middle one back to the PTO bearing you could make that work. Turn up your oil pump 2 turns from stock, and let it rip.

Put a plate on the bottom side of the turbo where the outlet is.

Open up Boonddockers Pro rmk with intercooler and look at steps 21-23 they do the same thing.

http://boondockers.com/instructions

racin_jayson · Nov 20, 2014

Good stuff, thanks for the input guys.

ewanaburner · Nov 21, 2014

pulse pump

once the crankcase gets boost the pulse pump will stop pumping
pulse pumps work on pressure then vacuum as the piston moves
up and down as boost comes up just the pressure will fluctuate
but will always have some pressure therefore not work

it will work at idle but not under boost DON'T do it turbo WILL FAIL !!!!

this comment is for case driven pulse pumps only electric pulse pump may work

LoudHandle · Nov 21, 2014

ewanaburner said:
once the crankcase gets boost the pulse pump will stop pumping
pulse pumps work on pressure then vacuum as the piston moves
up and down as boost comes up just the pressure will fluctuate
but will always have some pressure therefore not work

it will work at idle but not under boost DON'T do it turbo WILL FAIL !!!!

this comment is for case driven pulse pumps only electric pulse pump may work

While on a Normally Aspirated engine the pressure pulse does fluctuate from a pressure pulse to a vacuum pulse, the pump actually functions due to the pressure differential, the difference between the high and low pulses. When boosted the pressure differential is the same, it just occurs at a higher valve. The pump does indeed still pump, as Gus described it.

If you had issues with this in the past, you had other issues at play and misdiagnosed the problem. IMO

gus bohne · Nov 22, 2014

thanks for clearing that up loudhandle. lots of folks seem to be of the misconception that once under boost all pumping stops and just ONE set pressure exists. not so.. nothing changes in the function of the engine and the pumping of the crankcases. or the reeds could be removed and you would be reed trouble free forever !!

gmustangt · Nov 26, 2014

I guess a guy could run the line to the top of the turbo then a line out the bottom and just run that line into your downpipe and out it goes.

Anyone have a rough measurement of how much 2 stroke oil gets run through the turbo per tank of gas? Say on the MTNTK kit.

What size restrictors are used?

I know its "a small amount" but that up for interpretation.

roughrider99 · Jan 7, 2015

bringing this back as this idea intrests me in deleting my turbo oil tank but keeping a conventional ball bearing setup.
could the oil return from turbo just be routed to lube the engine or oil pump inlet? doesnt seem ideal to pump the oil out the pipe and pushing the oil past the bearings will just gunk up the intercooler and decrease its efficiency of cooling charge air.

wellfed777 · Jan 7, 2015

Sliber and BD are both using one of the injector pump lines on some of their kits

engine builders: does that worry any of you ?
since the factory runs two lines into a T then to the case
with this setup you run one of those lines to the turbo one to the case
will that affect flow to the case line :noidea:
thanks

Daltech · Jan 7, 2015

wellfed777 said:
Sliber and BD are both using one of the injector pump lines on some of their kits

engine builders: does that worry any of you ?
since the factory runs two lines into a T then to the case
with this setup you run one of those lines to the turbo one to the case
will that affect flow to the case line :noidea:
thanks

Your question is good.
If my mind serves me right, Polaris have some kind of check valves on oil connections to the case. And I will remember these valve would not open before under certain pressure.
If that`s the case, and you are splitting the oil line, oil will flow the way it has less resistance. I would not think there`s much resistance true a ball bearing turbo. So will the turbo take away the oil from the case?

I will give BD and silber the good faith, and will beliv they have this figured.
Maybe someone else have the know about the case oiling.

Tubo oiling using OEM injection pump

Member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Member

Active member

Well-known member

Well-known member

Active member

Member

Active member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Similar threads