Triple Oilrestrictors?

[Selleen]

Hello, I have some oil problems in my rb25det neo, Im going to block one oil feed and a 1.1mm in the other.
My problem is that there is already 2x 1.5mm restrictors fittet,
How far down can you knock down the factory 2mm and the 1.5mm? Or do i need to remove the 1.5mm?

[GTSBoy]

How much oil restriction you need depends on 4 things.

1) Oil pump type.

2) Revs used.

3) Usage model (drag, drift, circuit, street)

4) How good your sump breather setup is.

You will find the answers, taking into consideration all those aspects, in the oil control thread.

[Selleen]

Hm, I already know thich oilrestrictors that im gonna go for, I just asking if i need to tap the old 1.5mm's out?

[GTSBoy]

Have you read your OP? It is totally inconsistent. It talks about 2x1.5mm and then it talks about there being 1x1.5 and 1x2mm. Didn't sound like you knew what was going on.

On top of that, do you understand that a 1.5mm restrictor upstream of a 1.1mm restrictor is going to mean that the total restriction is going to be tighter than a 1.1mm restrictor on its own?

[iruvyouskyrine]

Read the oil control thread as GTSboy said. Search and you will find.

With the limited info you have given, leave standard ones in and fit 1.2mm and block the other.

[Selleen]

Ofcourse, its a drift machine 700whp with solid lifters, and 2x 1,5mm isnt enough, and I dont really want to drill out The old ones! Thats why i Wonder IF I have to

[Selleen]

The block is from a S1 rb, and thats 2mm original, and someone before me put tomei 2x 1,5mm, and now i got a neo head, and The oilflow is too much. Thats why im gonna block one and go for 1,1mm in the order, n1 pump

[KiwiRS4T]

I don't know for sure but seeing how short they are I would think you could get three in the hole no problem, Get a drift and tap the existing ones down to make room for the new one so you don't have to hit it too hard potentially closing up the restrictor.

[GTRPSI]

Hello, I have some oil problems in my rb25det neo, Im going to block one oil feed and a 1.1mm in the other.

My problem is that there is already 2x 1.5mm restrictors fittet,

How far down can you knock down the factory 2mm and the 1.5mm? Or do i need to remove the 1.5mm?

There is heaps of room to tap down restrictors and add other smaller (but not larger) ones.

If going larger you need to remove the smaller one in there, i use a self tapping screw run into the hole of the old one and use a old shifter to tap it out.

If the block is stripped i always remove them no matter what as dirt can get caught under them, very important to do so when dealing with spun bearing engines so you can get the rifle cleaner rods inside for scrubbing.

[Selleen]

There is heaps of room to tap down restrictors and add other smaller (but not larger) ones.

If going larger you need to remove the smaller one in there, i use a self tapping screw run into the hole of the old one and use a old shifter to tap it out.

If the block is stripped i always remove them no matter what as dirt can get caught under them, very important to do so when dealing with spun bearing engines so you can get the rifle cleaner rods inside for scrubbing.

Now i tapped it out, but now the problem is that it was a original with check valve 1.5mm~? I've heard it were 2mm on rb25 s1 block thats why i thought someone putted down tomei restrictors.

Now my new question is that, Do i need to have the original with 1 way check valve or can i just run with the new 1.1mm? Is there any check valve in the fuel pump?

[Selleen]

Now i tapped it out, but now the problem is that it was a original with check valve 1.5mm~? I've heard it were 2mm on rb25 s1 block thats why i thought someone putted down tomei restrictors before.

Now my new question is that, Do i need to have the original with 1 way check valve or can i just run with the new 1.1mm? Is there any check valve in the fuel pump?

[GTSBoy]

Fuel pump? You mean oil pump, yes? Yes of course there's a check valve in the oil pump, but that doesn't stop oil falling out of the head feed galleries.

But you're talking about a Neo head now anyway, so you don't need to pump up lifters quickly, so a 1 second wait for oil pressure won't be killing you, surely.

[Selleen]

Haha ofc oil pump! thanks for The help mate, lets see if the oil stays in the pan now!