Jump to content
SAU Community

[Closed] Borg Warner Efr Series Turbos

Lithium

By Lithium,
in Engines & Forced Induction

 Share

Recommended Posts

intune Collaborator

intune

Posted
Posted

I cannot see why people are still using twin setups. If garret cannot develop a rear housing for their gtx twin range, means to me that the problem is with the rear housing. It nearly cost me an engine in 6min of track time.

The setup that Piggaz is referring to is mine.

All I can say about the setup is that I should of done it earlier and not bothered with twin -5's.

IT'S FCKN AWESOME in all areas. Just do it and you won't look back.

  • Like 1
  • Replies 3k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Lithium
Lithium

Hi all!   I've not really been active on this forum for some time and although I lurk in to read bits and pieces of interest I don't really think of this as a forum I'm part of but I once was and I di

R32 TT
R32 TT

Haha - yeah it could use some more boost Simon..  I'm sorry I've not put up Motec logs in the past for those who've wanted to see. Back at the time I did a bit of comparing because I did more or

Full-Race Geoff
Full-Race Geoff

mr skidz, your posts are coming off as trolling at this point.  do EFR people go into precision threads and talk about how great their mates setup is, but wont give any details??  whilst complaining t

Posted Images

sneakey pete Grand Master

sneakey pete

Posted
Posted

The BW EFR turbos have a speed sensor that you can install on them to measure the rpm of the turbo. They have upper limits of course. There's a pretty fixed relationship between boost, speed and airflow (from memory, don't scold me if i'm wrong!) so it helps with safety and getting a good handle on exactly whats going on in your setup

intune Collaborator

intune

Posted
Posted

The exact same one that sits on the back end of -5's

Ok, but that was made in the 90's. Do you know why they didn't make a newer design rear housing?

With my setup, the turbo is making noise at 2000 and at 3000 it wants to rip your face off.

BoostdR Mentor

BoostdR

Posted
Posted

The BW EFR turbos have a speed sensor that you can install on them to measure the rpm of the turbo. They have upper limits of course. There's a pretty fixed relationship between boost, speed and airflow (from memory, don't scold me if i'm wrong!) so it helps with safety and getting a good handle on exactly whats going on in your setup

Boost and flow doesn't have a fixed relationship. That's why I'm maxing out at 25psi on a 3 litre. A 4cly 2ltr would prob take 30psi before maxing out.

Keeping under the speed limit stops the turbine falling off.

usmair Mentor

usmair

Posted
Posted

The BW EFR turbos have a speed sensor that you can install on them to measure the rpm of the turbo. They have upper limits of course. There's a pretty fixed relationship between boost, speed and airflow (from memory, don't scold me if i'm wrong!) so it helps with safety and getting a good handle on exactly whats going on in your setup

ah yes my mechanic did install the speed sensor for the RPM on the compressor wheel. also recommended I get one.

he said due to the lightweight material used on BW, its a good idea to keep an eye on how fast it is spinning so you don't break it!

Mick_o Grand Master

Mick_o

Posted
Posted

just post the gtx turbos up here and I'll test them for you

So you can find out 1st hand how hard they will fail and prove me right about all the shit i been harping on about in the GTX thread? Of how GTX compressors wont work with factory location housings?

Garrett put these compressor wheels in their own housings for a reason mate ;)

Honestly Pete you will be making the right move taking the EFR route.

So what if the GTX wheels turn out to be a "tad better" (which i highly doubt) will the machining costs etc be worth it? The EFR will still punch holes in them from 800rpm - 8000rpm in every single way and the money spent on machining etc goes to a manifold for the single an intake pipe, a cooler pipe change and a dump pipe.

The offset in the price wouldn't be that much different (if going IWG .92) BUT i guarantee the result and the way the car drive will be 100% better!

Guest
This topic is now closed to further replies.
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Dose Pipe Sutututu
      NC MX5

      By Dose Pipe Sutututu · Posted

      Lamb roast on Saturday will be different 🥲
    • TurboTapin
      RB25DET with solid lifters - which cams ?

      By TurboTapin · Posted

      They are under bucket shims. Tomei provides a test shim kit and then any measurement of shim required. 
    • GTSBoy
      RB25DET with solid lifters - which cams ?

      By GTSBoy · Posted

      I always wondered how you were supposed to buy a set of 24 buckets and somehow magically have every single one of them yield exactly the desired clearance. I would have thought you'd need to assemble a cam with either 12 "sample" or "example" buckets of known top thickness (or a single such sample/example 12 times over!!) measure clearances at every valve, and then do the usual math to work out what the actual "shimness" of each bucket needed to be, before buying the required buckets to make up he thicknesses that you didn't have on hand.
    • TurboTapin
      RB25DET with solid lifters - which cams ?

      By TurboTapin · Posted

      I now seem to be limited in power due to my rev limit/hydraulic lifters in my built RB25. I'm looking into converting over to Tomei solid lifters. Question for anyone that has done the conversion. I was always under the impression that when using the Tomei solid lifter conversion, you would also require new valves (Longer or shorter stems, I can't remember which).  I don't know where I got this idea, as so far I see no mention of this in any of the Tomei documentation. It just states I need the Tomei solid buckets, solid lifter cams and upgraded springs. As my head is already built, all I would need is another set of 1000$ Kelford cams, 500$ buckets and about 4H hours of my time installing and I'm off to the races!?!? There's no way it's that simple, I must be missing something? 
    • TurboTapin
      Why am I hitting a power wall with my stroked RB25?

      By TurboTapin · Posted

      I couldn't agree more. I should have started from the get-go with a NEO or solid bucket conversion. I started looking into converting over to solid lifters yesterday. Now for some reason I was always under the impression that when using the Tomei solid lifter conversion, you would also require new valves (Longer or shorter stems, I can't remember which).  But I see no mention of this on any of the Tomei documentation. It just states that I need the Tomei solid buckets, solid lifter cams and upgraded springs. As my head is already built, all I would need is another set of 1000$ Kelford cams, 500$ buckets and about 4H hours of my time installing and I'm off to the races!?!? There's no way it's that simple, I must be missing something? 
×
×
  • Create New...