Jump to content
SAU Community

Recommended Posts

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.

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.

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 ??

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.

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 ..
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.

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.

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.

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.

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

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?

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 ?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Oh dear. The panel beating needs to be done before the filler work. Do you have a photo of the dent before you started? Hard enough to not flex and only hit the high spots?  What do you mean it was just temporary? 
    • Can u check this way it works for power supply?
    • These coils draw 10amps that what i read online
    • I appreciate the detailed explanation, think I understand now. I spent the better part of last night reading what I could about shuffle and potential solutions. I had replaced the OEM twin turbo pipe with an alternate Y pipe that is separated further away from the turbo. The current one is from HKS and I had a previous pipe that was separated even further away, both have shuffle. I had heard that a divider can be welded in to the OEM pipe to remove turbulence, and figure that aftermarket pipes that are more separated would achieve the same thing. From what I read, most people with -10 turbos get shuffle due to their size, though it's a bit less common with -5s on a standard RB26. I think Nismoid mentioned somewhere it's because OEM recirculation piping is common in Australia with -5 cars. It seems that the recommendation tends to vary between a few options, which I've ordered in what I think is most feasible for me:  1. Retune the MAP or boost controller to try to eliminate shuffle 2. Install OEM recirculation piping 3. Something called a 'balance pipe' welded onto the exhaust manifolds. I don't know if kits for this are available, seems like pure fabrication work 4. simply go single turbo My current layout is as follows: Garrett 2860 -5s HKS Racing Suction intake MAF delete pipes HKS racing chamber intake piping hard intercooler piping,  ARC intercooler HKS SSQV BOV and pipe Haltech 2500 elite ECU and boost solenoid/controller HPI dump pipes OEM exhaust manifolds HKS VCAM step 1 and supporting head modifications Built 2.6 bottom end All OEM recirculation piping was removed, relevant areas sealed off I'll keep an eye out for any alternative solutions but can get started with this.  Only other question is, does shuffle harm the turbo (or anything else)? It seems like some people say your turbo shafts will explode because of the opposing forces after a while and others say they just live with it and adjust their pedal foot accordingly. 
    • That worked out PERFECTLY! Thank you big time to JJ. He was able to swap me his stock diff. He drove all the way to me as well. Killer! Removal & install was pretty straightforward. The diff itself is HEAVY. So that’s a 2 man job.  Man does the car drive nice now! Couldn’t have worked out any better 👌
×
×
  • Create New...