hondahater

iTrader: (2)

As you may or maynot know I'm having problems with my bnr stage III with it leaking oil from the seal so I talked to brian about it and he says that it is getting to much oil so I think he is going to hook me up with a stock oil feed line with a restrictor in it however if I wanted to make my own what would I need from this website?

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

Any help would be appreciated. Thanks.

Aaron Cake

iTrader: (1)

There is no restrictor in the stock oil feed line. It's built into the turbo.

At the minimum, you need the flanges. The T3/T4 style flange fits the stock turbo. Then get the appropriate AN adapter sand braided stainless line.

ilike2eatricers

So with a BNR hybrid is the restrictor does the restricter remain?

Hondahater- So does it still need to be rebuilt?

RotaryResurrection

iTrader: (8)

I think the hole in the block is 12mmx1.5, so you need an adaptor fitting. Most people would run -4an or -3an (lower the number, smaller the ID of the hose is) for oil feed, especially if you need to restrict flow (I run -3). So you need an adaptor for 12x1.5 to -3 or -4, I think they only make it for -4. Then (if you decide to go with -3 line) an adaptor for -4 to -3. Then, a length of -3 hose, with 2 hose ends (90* if possible, for a cleaner install) for -3. Then a flange for the turbo. And an adaptor between the -3 hose end and whatever the flange accepts. It can get pricey, and this will likely run you $100 or so. Usually each adaptor is around 7-10 bucks, each hose end around 10 bucks, and each flange 10-15 bucks. Then you have the line itself which is around 5-10 bucks per foot.

If the turbo doesnt have a restrictor, just install one into it. Tap the insides of the inlet passage with the same thread as a plug of some sort. Then take that plug and drill a small hole into it, consult with the turbo guys about the size of the hole. Now install the plug, adn there is your restrictor. Then install the line as usual. This could also be done inside the banjo bolt for the oil feed fitting on the block.

hondahater

iTrader: (2)

thanks everyone for all the help!

Aaron Cake, from what I understand brian actually takes a stock oil feed line and welds it shut and then drills a small hole for the oil to drain to the turbo.

ilike2eatricers, I'm not quite sure if the restricter in the turbo remains however i've heard on quite a few occations from people that have bnr hybrids that they need restrictors to help reduce oil flow. so I'm not sure if this turbo needs a rebuild after all.

Kevin: thanks for all that info that was very helpfull, So basically I would need?

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

to one of these:
http://www.atpturbo.com/Merchant2/me...egory_Code=OIL

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

back to the resistor:
http://www.atpturbo.com/Merchant2/me...egory_Code=OIL

and then the fitting:
http://www.atpturbo.com/Merchant2/me...egory_Code=OIL

and then back down to one of these:
http://www.atpturbo.com/Merchant2/me...egory_Code=OIL

does that sound right? Thanks again guys.

F1blueRx7

iTrader: (5)

Wait. I don't understand. BNR's retain the stock center section, therefore, you should still be using the stock feed and return lines with the turbo. If you are having problems with smoking you should try capping the bottom nipple on the oil filler neck, run the top nipple to a catch can, and a vacuum line from the catch can to a vacuum nipple about 3-4 inches in front of the turbo. This will help draw the oil through the turbo and back to the oil pan.

When I had a hybrid I thought I had to go with an aftermarket oil return because the compressor was too large for the stock return to fit. Well, after I notched the bracket that holds the compressor housing on the turbo, it fit fine. Not sure if you are having this issue or not.

ilike2eatricers

Archive!

hondahater

iTrader: (2)

after I showed brian what my turbo was doing (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/well-my-gaskets-werent-what-causing-oil-leak-turbo-404108/) he gave me this email.

"Hello.

Some turbos leak a little from there then it burns off and leaves a carbon like buildup right there on the turbine housing. You can still drive it and act normal. The turbo might need to be restricted.

Usually when people upgrade their engines, they use FD oil pressure regulators. This bumps up the pressure to 90-120 psi. Turbos like anywhere from 35-55 psi of oil pressure. That may be your key to stopping the leak. It isn't severe, just drive it and see if it stops. If not I will ship you a restricted oil feed line.

P.S. How did you like that wastegate??? "

now he gave me that email right after I showed him the little bit that was dripping down the hotside, then I showed him the oil around the hotside fins (see second page of the link above) and then he wrote me this.

"It probably needs that restrictor. Call me sometime and we will discuss a few things about the turbo and the car."

edit: I don't have any oil pressure regulator.

F1blueRx7

iTrader: (5)

I thought you said you weren't using an FD oil pressure regulator in your other post?

He's right about too much oil pressure, but there is usually a reason for it. IE, the return line is clogged or in big turbo applications it's not big enough for what the turbo is being fed.

hondahater

iTrader: (2)

I don't have an fd oil pressure regulator your right, I think he just said that incase. Now right now I have no emmissions and the lines from the oil filler neck and the one right below that are just going to two differant lines that are run to the side of my engine and I'm letting the oil drain that way however if you don't think this is good enough I'll get an oil catch can if you think it will help.

silverrotor

iTrader: (1)

hondahater, I don't know how In you are In to ordering parts but this thread may prove useful.

https://www.rx7club.com/showthread.p...hreadid=296418

hondahater

iTrader: (2)

Thanks silverrotor, I've actually seen that thread before but I believe that is just for the oil return line and I think I'm good as far as the return line goes it's just the feed line that I need to incorporate some sort of restrictor into. Unless I read that thread wrong, I'll reread it again.

F1blueRx7

iTrader: (5)

If you want to, you can just run that vacuum line without the catch can right to the intake, but to keep it cleaner, I personally would use the catch can method.


-10an would be about the same size as the stock return.

hondahater

iTrader: (2)

ok I must be missing something. Is there some reason we are looking at the return line? I'm sorry I'm still a newb I know and I have 4000 posts anyways I'm assuming you are talking about the return line because it's not returning enough oil and that is why it's leaking correct? I would really hate to go through the trouble of making a new return line if the stock one is good enough and plus I heard that if you make the return line wrong and it dips a little then oil will just pool in one spot instead of actually draining.

ok so it would basically go from a vac source to the oil catch can and from the bottom nipple of the oil filler tube to the catch can as well?

F1blueRx7

iTrader: (5)

Thats right, the stock return line is the best one for the stock turbo because it's a gravity system. It has to fall out of the turbo, and down the line. So if there is a hold up at the return line it's going to build pressure in the turbo and make it leak.

No, you go from top filler nipple to catch can, then from catch can to intake. The bottom nipple is capped off.

hondahater

iTrader: (2)

ahhh gotcha, thanks man! I"m ordering an ebay catch can now. I'm also waiting on brian to call or email me back to see what he thinks. I'll let yall know as soon as I know something.

hondahater

iTrader: (2)

ok if I just wanted to hook it up in a crude way could I just hook the tid to the oil filler neck and leave the bottom nipple open? In other words how would I hook it up without a catchcan? I'm ordering one now but it won't be in till next week. THanks

F1blueRx7

iTrader: (5)

No it's the same exact setup, bottom nipple capped, top nipple just goes straight to the TID, remember 3-4 inches infront of the blades. If there is an oil droplet that comes in to the TID, it can atomize prior to hitting the fan blades.

When I'm ready to do this mod again on my new car, I'm actually going to make the catch can out of PVC with two brass vaccuum nipples on the top. It' a very simple device and really does not warrant the price of buying a brand name one unless you are into the bling bling.

hondahater

iTrader: (2)

thanks for the help again man! I'm going to get one of the non brand name ones off of ebay for something like 25 bucks. I'm going to hook the turbo up like this and see how it works out, I'll let you know