junito1

Ive searched quite a bit around the web. Full-race says they need restrictor pills on -4an and bigger.

When I bought my turbo I did not look at the paperwork, but some are saying it tells you to use -4an without restrictor.

Anyone have real info on what oil pressure these journal bearing BW s300 series are suppose to operate at?

Turblown

iTrader: (12)

I've never run them with a restrictor, using use a 4AN feed, -12An return, and stock FD OP. Just make sure you use a proper crankcase vent( -12AN open line).

TwinCharged RX7

iTrader: (14)

Ditto. It's a journal bearing turbo.

junito1

10-4. I might have to redo me 10-an return to -12

rxspeed7

iTrader: (5)

-10 wil be fine too.

junito1

it would save me around 40$. I will try -10 considering i dont exactly make 3rd gen oil pressure. I used the racing beat 85 psi=/

rxspeed7

iTrader: (5)

We've ran every bw turbo under the sun will oil pressures from 75-130psi with -4 feeds and -10 returns without a single issue.

junito1

Boom!

Silverfc88

iTrader: (7)

Boom?

Just started using a S360 with -4 oil supply without a restrictor and -10 drain. So far so good with no smoking issues.

dznutzuk

iTrader: (1)

Journal turbos don't need restrictors, that's for ball bearing turbos which only need to see a mist of oil.

FD7KiD

iTrader: (8)

any update with regards to using or not using a oil restrictor ??

thanks

joeylyrech

iTrader: (11)

My S369 on a fd motor with a -4 line with no restrictors does smoke a little.I am looking into getting the oil flow restricted and see if it does stop.By the way is not the motor.My old turbonetics that i just removed it did not smoke and it had decent shaft play on it.

joeylyrech

iTrader: (11)

-12 an return line into stock drain location.

FührerTüner

iTrader: (5)

is everyone sure these turbos dont come with a restrictor built in?

joeylyrech

iTrader: (11)

No restrictor according 2 the BW tech guy.

Gilgamesh

Mine is a -4 with a .049 nitrous pill restrictor. Way bigger than any BB restrictor and the motor makes 90+PSI and pegs the FD gauge.

I just cut off the flared end of a NPT to -4 adapter and stuck the nitrous pill in there as it has the same 37* AN flare.

joeylyrech

iTrader: (11)

Well i did installed a restrictor in mine and no more oil smoke.

FD7KiD

iTrader: (8)

hey thanks for the update, would it be cool if you could provide a link to which restrictor you used

thanks in advanced.

IRPerformance

iTrader: (41)

You shouldn't need a restrictor unless you have a race pressure regulator or an issue causing excessively high oil pressure. I also run a -4 feed and -10 return. All modified turbo cars should have a properly vented catch can.

joeylyrech

iTrader: (11)

Is a FD motor on a FC with a vented catch can.The turbo was purchased a couple of months ago and since the first startup it seems 2 burn a little oil.

IRPerformance

iTrader: (41)

Whats your oil pressure like?

joeylyrech

iTrader: (11)

50 idle 110 when revving.

junito1

I have been running -4.an feed and 10an return. Without a restricted hasn't smoked since I originally posted. Never needed he 12an return.

IRPerformance

iTrader: (41)

110 is a little high but it shouldn't smoke. Make sure your crankcase is properly vented.

joeylyrech

iTrader: (11)

IR any particular way 2 vent my crankcase 2 help with the smoking?