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Oil Control In Rb's For Circuit Drag Or Drift

Sydneykid

By Sydneykid,
in Engines & Forced Induction

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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

NP mate. it does not require welding but it will require your machineist to machine down the crank and fit it correctly. its not a easy job and you have to have the crank out of the engine to do the task.

what was the other question? did you read through this thread ? it has everything you need.

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iruvyouskyrine
iruvyouskyrine

Whoops, yes i did mean catch can, corrected it now. Yes i understand that now. The two goals are to reduce the amount of oil entering the head, and equalize crankcase pressure. The oiling issue is s

fatz
fatz

less thinking more doing shit that works in the getto Dash ten on pasengers side Two dash 12 on the drivers side, angles and spaced so as not to hit shit and be able to tighten the f**ker up note

SimonR32
SimonR32

I ran my set up right up to 8800rpm at 2 bar (740rwhp) around the track with sticky R-comps the other night and not a drop out of the catch can. This is with no oil restrictors to the head and a stoc

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r33_racer Grand Master

r33_racer

Posted
Posted

always balance everything that goes up and down and round and round. Might as clean up the crank too while there, any dags and casting marks clean it up and get it slippery smooth.

SATO GTS Community Regular

SATO GTS

Posted
Posted

In regards to the RB25 , why is the front feed blocked off and the rear feed restricted but with the other engines its the rear feed that gets blocked off and the front feed get's the restrictor as per sydneykids table ??

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

we dont know where sydney kid comes up with his ideas but they have been proven to work time after time after time so its a good idea not to ask questions how he comes up with it...

I think it may be because the rb25 has hydro lifters and its required to have it setup that way to run them properly where the gtr has solids which does not need the same kind of oil configuration.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

Mine is done as per Sydney kids instructions and its been running for 2 years and 363rwkw.

There are many others whos are running well too. I dont know why people have to question it all the time.

well i certainly do not know thats why i am asking these question's b4 i put the motor together .. i want to be 100% sure all is correct ..
Cubes Grand Master

Cubes

Posted
Posted
in saying that guilt-toy if you install the non vct 25 head you block of the rear and feed the front but with the 25 vct head its opposite and both have hydraulic lifters..

thats is correct??

I run the non-vct RB25 head.

I blocked off the rear restrictor as the Rb26's are and run a 1.5mm restrictor up font.

Works fine no ticks, pops etc. Went from shit loads of oil everywhere over 5500rpm+ to a bone dry catch can. Still plenty of oil floating around in the cam covers. Prior on idle oil was puddled up to the base of the cam so you couldn't see the lifter. Now u can.

As a few have experienced; if you experience hydraulic lifter tick once the motor is warm its a tell tale sign the motors on its last legs. Recently happened to a mate of mine running an rb30det.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

what went on your mates engine when it went ? i get lifter tick for about 5 seconds when i start the engine on cold startup only...

just wondering what went on your mates engine

I run the non-vct RB25 head.

I blocked off the rear restrictor as the Rb26's are and run a 1.5mm restrictor up font.

Works fine no ticks, pops etc. Went from shit loads of oil everywhere over 5500rpm+ to a bone dry catch can. Still plenty of oil floating around in the cam covers. Prior on idle oil was puddled up to the base of the cam so you couldn't see the lifter. Now u can.

As a few have experienced; if you experience hydraulic lifter tick once the motor is warm its a tell tale sign the motors on its last legs. Recently happened to a mate of mine running an rb30det.

Cubes Grand Master

Cubes

Posted
Posted
what went on your mates engine when it went ? i get lifter tick for about 5 seconds when i start the engine on cold startup only...

just wondering what went on your mates engine

Lifter tick when the oil was warm and poor oil pressure no bottom end knocks or noises. The lifters were silent when cold.

Mine is fairly decent on cold start up, I only get an occasional tick. I can't remember the last time it ticked but I haven't been driving the car during the week for a while.

The RB20 was the same. Occasional tick.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

Yeah well i checked my oil change sticker and it has been 6000km's since a oil change!! so thats why they would be ticking.. oil is getting a little old but its 300v chrono which is known to last longer then normal fully synthetic oil.

will change it in the next week or 2 :) ooooopppss

Lifter tick when the oil was warm and poor oil pressure no bottom end knocks or noises. The lifters were silent when cold.

Mine is fairly decent on cold start up, I only get an occasional tick. I can't remember the last time it ticked but I haven't been driving the car during the week for a while.

The RB20 was the same. Occasional tick.

Duncan Grand Master

Duncan

Posted
Posted

thats a pretty over the top solution Beyond Horizon, you will never fit the standard piping back on if you go a fitting like that. A simple 90o angle with 1/2 hose barbs on one side and 3/8 BSP thread on the other can be tapped into the head just to the right of the fitting in that pic - much easier, smaller and about $3 for the fitting

Chris Wilson Proficient

Chris Wilson

Posted
Posted
thats a pretty over the top solution Beyond Horizon, you will never fit the standard piping back on if you go a fitting like that. A simple 90o angle with 1/2 hose barbs on one side and 3/8 BSP thread on the other can be tapped into the head just to the right of the fitting in that pic - much easier, smaller and about $3 for the fitting

But will it flow as well, bearing in mind we are talking gravity feed here?

Behind Horizon Collaborator

Behind Horizon

Posted
Posted
thats a pretty over the top solution Beyond Horizon, you will never fit the standard piping back on if you go a fitting like that. A simple 90o angle with 1/2 hose barbs on one side and 3/8 BSP thread on the other can be tapped into the head just to the right of the fitting in that pic - much easier, smaller and about $3 for the fitting

Do you know where i can find some pictures of this modification you're talking about or do you have some ?

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