Jump to content
SAU Community

Recommended Posts

On 24/05/2020 at 3:45 AM, RB335 said:

Making 50% of max power by 4500, that's amazing.  Tempting me to switch from my 8474 to twin 6258s

Is anybody able to take measurements of the EFR9280 compressor, I'm seeing if I have enough clearance on my engine to run and test it compared to the 9180 which I have on me which fit fine on a 6boost T4 in a R33 GTR engine bay

I don't think it's that shocking on an RB30, it's good but it's not unheard of at all.   I think if you get the EFR8474 running on a good (/similar) RB30 setup you'd not be left feeling disappointed.

  • Like 1

THAT! ^^^^ Not trying to take anything away from that result as it's no doubt a f**king fast car! BUT an 8474 or above will go toe to toe with that all day. Particularly down low /midrange power. 

  • Like 1

I'm gonna change my setup now. The PT6466 System is going for sale because I'm looking for a different driving style.

Will try the EFR 7670 with a 1.05 EWG and a 6 boost manifold with 2x40mm wastegates and im curious to see what it's gonna be. Aim is to come close to 550 engine horses on 100 octan.
Hope it brings some fresh wind :D

Edited by meX

Question!

Who has used a TurboSmart replacement BOV that fits in the OEM position?  And if so has anyone actually noted a difference?

There appears to be a suggestion the factory one may leak - but I don't know if that's true or not.  I don't see how I can measure either - so the only way to find out is replace and see (which is an expensive experiment if it does nothing)

And Turbosmart appear to offer two variants:

https://turbosource.com/products/turbosmart-kompact-shortie-plumb-back-efr-bov-upgrade

https://turbosource.com/products/turbosmart-kompact-shortie-dual-port-efr-bov-upgrade

Any feedback ?

 

 

1 hour ago, R32 TT said:

There appears to be a suggestion the factory one may leak - but I don't know if that's true or not.  I don't see how I can measure either

You can test if the factory one is opening under boost by simply blocking it off with a coke can gasket. You're not looking for the differences anywhere except when making boost.

2 hours ago, R32 TT said:

Question!

Who has used a TurboSmart replacement BOV that fits in the OEM position?  And if so has anyone actually noted a difference?

There appears to be a suggestion the factory one may leak - but I don't know if that's true or not.  I don't see how I can measure either - so the only way to find out is replace and see (which is an expensive experiment if it does nothing)

And Turbosmart appear to offer two variants:

https://turbosource.com/products/turbosmart-kompact-shortie-plumb-back-efr-bov-upgrade

https://turbosource.com/products/turbosmart-kompact-shortie-dual-port-efr-bov-upgrade

Any feedback ?

 

 

I had the dual port turbosmart bov on my 7163 to help with compressor surge on throttle lift off. No longer an issue with the 8374, so if you'd like a cheaper 2nd hand one let me know.

The other main difference is adjustable spring tension for the given vacuum of the engine.

11 hours ago, GTSBoy said:

You can test if the factory one is opening under boost by simply blocking it off with a coke can gasket. You're not looking for the differences anywhere except when making boost.

In this case by factory/OEM I think that's referring to the standard EFR integrated BOV, not the Nissan one. I don't think you can block off the EFR one with a coke can.

23 hours ago, GTSBoy said:

But, you may be able to do something equivalent. ie, make a plug that can replace it.

indeed... https://www.turbosmart.com/product/bov-blanking-plate-for-borg-warner-efr-kkk-and-ecoboost-turbochargers/

 

yep i have a 6 boost with single divided outlet, 8374 1.05 on a 2.6l rb26

50mm progate, 7psi spring a 4 port mac valve.

no creep above 10psi of boost. below this you are asking too much flow through the gate. the lowest boost run was with the boost solenoid unplugged from ecu.

dyno.jpg.6cbb35ab9e99fa412a875b1f8824b75d.jpg

Edited by burn4005
  • Like 3
56 minutes ago, burn4005 said:

yep i have a 6 boost with single divided outlet, 8374 1.05 on a 2.6l rb26

50mm progate, 7psi spring a 4 port mac valve.

no creep above 10psi of boost. below this you are asking too much flow through the gate. the lowest boost run was with the boost solenoid unplugged from ecu.

dyno.jpg.6cbb35ab9e99fa412a875b1f8824b75d.jpg

great result, is max boost around 28psi? i have same turbo setup, except will be on 2.8 with vcam, looks like i need to step it up to 8474 at the very least

I would definately go a 8474. this turbo is at absolute full speed. on the 490kw trace you can see the boost drop at 7500rpm. that is the boost target dropping to stop it going over 128krpm.

this is the VE calculated airflow ive overlayed over the compressor map. nothing left.

8374.png.ae22450840399bd1576ae84f0bd7eebb.pngthis is the VE

 

  • Like 1
On 24/05/2020 at 1:45 AM, RB335 said:

Making 50% of max power by 4500, that's amazing.  Tempting me to switch from my 8474 to twin 6258s

Is anybody able to take measurements of the EFR9280 compressor, I'm seeing if I have enough clearance on my engine to run and test it compared to the 9180 which I have on me which fit fine on a 6boost T4 in a R33 GTR engine bay

got dyno chart, i recall you also running 2.8 with vcam

  • 3 weeks later...

EFR6758, anyone know what the thread size/pitch is on the front housing cover for the boost reference signal? I looked through the EFR turbo tech guide but couldn't find it. Need to convert it to a -3AN fitting. Thanks

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

    • Ps i found the below forum and it seems to be the same scenario Im dealing with. Going to check my ECU coolant temp wire tomorrow    From NICOclub forum: s1 RB25det flooding at start up Thu Apr 11, 2013 7:23 am I am completely lost on this. Car ran perfectly fine when I parked it at the end of the year. I took the engine out and painted the engine bay, and put a fuel cell with an inline walbro 255 instead of the in tank unit I had last year. After reinstalling everything, the engine floods when the fuel pump primes. if i pull the fuel pump fuse it'll start, and as soon as I put the fuse back in it starts running ridiculously rich. I checked the tps voltage, and its fine. Cleaned the maf as it had some dust from sitting on a shelf all winter, fuel pressure is correct while running, but wont fire until there is less than 5psi in the lines. The fuel lines are run correctly. I have found a few threads with the same problem but no actual explanation of what fixed it, the threads just ended. Any help would be appreciated. Rb25det s1 walbro255 fuel pump nismo fpr holset hx35 turbo fmic 3" exhaust freddy intake manifold q45tb q45 maf   Re: s1 RB25det flooding at start up Fri Apr 12, 2013 5:07 am No, I didn't. I found the problem though. There was a break in one of the ecu coolant temp sensor wires. Once it was repaired it fired right up with no problems. I would have never thought a non working coolant temp sensor would have caused such an issue.
    • Hi sorry late reply I didnt get a chance to take any pics (my mechanics on the other side of the city) but the plugs were fouled from being too rich. I noticed the MAF wasn't genuine, so I replaced it with a genuine green label unit. I also swapped in a different ignitor, but the issue remains. I've narrowed it down a bit now: - If I unplug and reconnect the fuel lines and install fresh spark plugs, the car starts right up and runs perfectly. Took it around the block with no issues - As soon as I shut it off and try to restart, it won't start again - Fuel pressure while cranking is steady around 40 psi, injectors have good spray, return line is clear, and the FPR vacuum is working. It just seems like it's getting flooded after the first start I unplugged coolant sensors to see if its related to ECU flooding but that didnt make a difference. Im thinking its related to this because this issue only started happening after fixing coolant leaks and replacing the bottom part of the stock manifolds coolant pipe. My mechanic took off the inlet to get to get to do these repairs. My mechanics actually just an old mate who's retired now so ill be taking it to a different mechanic who i know has exp with RBs to see if they find anything. If you have any ideas please send em lll give it a try. Ive tried other things like swapping the injectors, fuel rail, different fuel pressure regs, different ignitor, spark plugs, comp test and MAF but the same issue persists.
    • My return flow is custom and puts the return behind the reo, instead of at the bottom. All my core is in the air flow, rather than losing some of it up behind the reo. I realise that the core really acts more as a spiky heatsink than as a constant rate heat exchanger, and that therefore size is important.... but mine fits everything I needed and wanted without having to cut anything, and that's worth something too. And there won't be a hot patch of core up behind the reo after every hit, releasing heat back into the intake air.
    • There is a really fun solution to this problem, buy a Haltech (or ECU of your choice) and put the MAF in the bin.  I'm assuming your going to want more power in future, so you'll need to get the ECU at some stage. I'd put the new MAF money towards the new ECU. 
    • Any idea where I can get genuine MAF apart from used ones? I can't find any only for GTRs and unfortunately that price is not in my budget 🤣 I might gap my plugs down and put my splitfires in, they were only in for a year or so before I started the rebuild 
×
×
  • Create New...