[Closed] Borg Warner Efr Series Turbos

[bigmikespec]

Clearly. Feel free to enlighten me.

PM me if you like for the sake of keeping this thread on topic.

[Rolls]

So what is the general consensus of the equivalent GT3071/76 in BW flavour? Any comparisons to show if the BW is worth looking at for this power range (260-300kw) on a 2.5L ?

[GTScotT]

So what is the general consensus of the equivalent GT3071/76 in BW flavour? Any comparisons to show if the BW is worth looking at for this power range (260-300kw) on a 2.5L ?

At the moment I think most people are basing their opinion on the HP rating. The B frame options all meet and exceed the said garrett items on paper, yet the largest of the B has proved itself equal to a 35R for now.

I think these turbos are still at the pioneer stage where everyone would rather buy a cheap OR proven item than risk one of these. This would be a good time for BW or Fullrace to step in and do some application based tests. The single turbo GTR that they have could be swapped out for anything B frame plus and retuned to show the realistic potential for each unit, very much hypergear style.

I am days away from my proposed purchase date and could still be swayed, if there were more results. I just dont have the cash to be the said pioneer myself.

[Rolls]

Yeah that's the thing, if there are turbo's that do outperform the garret ones I just don't know about them, not going to go buy 3 turbo's to figure it out myself. Oh well.

[D_Stirls]

Have a play with their matchbot software, that'll let you know which of the EFRs will suit your needs. It looks confusing but watch the tutorials at the bottom of the page.

http://www.turbodriven.com/en/performanceturbos/matchbot.aspx

[Rolls]

yeah Id still rather see dyno sheets

[TheKeeper]

So what is the general consensus of the equivalent GT3071/76 in BW flavour? Any comparisons to show if the BW is worth looking at for this power range (260-300kw) on a 2.5L ?

I know there is 6258 on a stock SR20 motor that dyno'd at 340 to 360whp (from memory) on the crappy U.S. west coast 91 octane fuel and the owner was praising the linear torque curve. I'm not sure if that dyno plot is online anywhere or not...

The twins on the RB26 work well, and don't "shuffle/surge" like other applications which I personally think is a huge selling factor for larger twins.

(The 6258's are rated at 450HP)

Edited June 26, 2011 by TheKeeper

[TheKeeper]

Found it on Full Race's facebook page ---> https://www.facebook.com/full.race

[GTScotT]

Found it on Full Race's facebook page ---> https://www.facebook.com/full.race

Do you work for full race? If so pass on my feedback regarding sponsor based results to get the things selling.

[TheKeeper]

Do you work for full race? If so pass on my feedback regarding sponsor based results to get the things selling.

It's not the lack of effort to get these in the right people's hands, it has a EVERYTHING to do with the lack of product. Once the product is more readily available you'll probably get all the information you want/need. (yes, I'm at Full Race)

[black bnr32]

see the tthread by Perrin on nasoic

[bigmikespec]

Why would they surge dont all models have surge slots in the comp housing?

[TheKeeper]

Why would they surge dont all models have surge slots in the comp housing?

I think it's more of a terminology issue here. MOST turbos (about 2530 and larger) on the RB26 seem to "fight each other" in a shuffle. I have heard many cars that do it slowly and in a whisper even at idle, only to get worse as load increases. The only way once the turbos start this "shuffle" under load is to hope you can drive right thru it or back off the throttle and immediately return to WOT. The 6258's have been proven not to do this... I'm sure you can search and find a lot of info on this phenomenon. It can be quite annoying.

[Beer Baron]

even my 2530s surge at idle. you can hear little choof choof noises as air comes in and out of the pod filters... though they are not bad under load. only surge under load at low rpm/high load situations (2,500 rpm, greater than 50%tps up a hill etc). but the GTRS etc tend to surge right into the midrange which sucks hard.

[TheKeeper]

even my 2530s surge at idle. you can hear little choof choof noises as air comes in and out of the pod filters... though they are not bad under load. only surge under load at low rpm/high load situations (2,500 rpm, greater than 50%tps up a hill etc). but the GTRS etc tend to surge right into the midrange which sucks hard.

Yup.. they sound like Darth Vader at idle. It's a very common theme with RB26's and larger twins, and some surge until you hit WOT. The 6258's show no signs of this and they are rated at 450hp.

Next up will be the 6758's to see if they ride the choof choof train to Vaderville, or like their little brothers, speak softly and carry a big stick...

[JCFsupra89T-2JZ-GTE]

Nik you won't go wrong with this one. I bought the EXACT same turbo off eBay from ApexBoost a seller in Ventura, CA he offered to polish it for free and machine down the 4.21" to 4". I offered $750 and won it.

http://cgi.ebay.com/ebaymotors/Borg-Warner-Turbo-S300-S366-Turbocharger-Extended-tip-_W0QQcmdZViewItemQQhashZitem2c5d9debbfQQitemZ190549191615QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

My mechanic has a similar one and loves it. He actually told me to get this exact one 2 years ago and I really wish I had. He is infact looking at getting one since he says it's actually a better one than his due to the something or other being twice the thickness. Sorry but I'm not a techno. I went with the GT35R instead since two buddies told me that that was the best street turbo...blah blah blah. Well the GT35R only lasted not even two years and it can't be rebuilt so that's $2100 wasted when I could have gotten this one for $775 shipped. It spools fairly quickly, has a lower power band which is good for street and track so it's not laggy. I'm running it as a single on my 89 Supra Turbo with 2JZ-GTE. My goal is only 750 RWHP not 800 so it will be fine. Not sure how it will work on a Skyline but it should be awesome if it's anything like on the Supra. If you can get it shipped to Oz from Cali then you have a winner unless you can pick one up there. My mechanic's buddy has one in his Nissan 300Z and paid $1000 so I figure I made off like a bandit. Cheers.

if your not specifically looking for an EFR series, look at the genuine

borg warner s300sx 88/75 http://www.full-race...roducts_id=1907

borg warner s300sx 91/79 http://www.full-race...roducts_id=1908

s366 is a BW turbo rebranded by bullseye power with more exhaust housing options ( bw mainly make t4 twinscroll where as BEP have t3 open housings)

Edited June 27, 2011 by JCFsupra89T-2JZ-GTE

[scandyflick]

So yeah...

It fits. Kinda. The boost control solenoid fouled on the standard manifold, and I couldn't quite clock the comp cover to where I wanted it, so I went out and bought this A'Pexi manifold (unsure) for nice and cheap.

Cover for the bypass valve is a little too close for me to just smash a water line on there, so I'll have to get a little creative. Probably use a banjo of some description.

Injectors for the new setup will likely come along this week, but it'll be a little while before much happens. Completely lost motivation for it at the moment, which was bound to happen eventually.

So now it's time for me to spend all my cash on something else, get drunk, head to the strippers, and do a whole bunch of other non car related shit until I'm motivated again.

[eron]

Was really considering an EFR 6258 for my SR20DET. However, it seems that there are too many components that need to be changed. The benefits do not outweigh the cost, and time required, as compared to cheaper, easier bolt-on offerings by many other companies.

For those who think it's a bolt on turbo it's not

Just because it's got a t2 flange does not mean it's a bolt on turbo

It will bolt onto the manifold but that's about

From what I can see in the picture

Custom dump pipe

Custom intake pipe

Custom intercoole pipe

After market manifold because I don't see he compressor housing clearing the exhaust manifold

http://www.nissansilvia.com/forums/index.php?showtopic=479236&view=findpost&p=6116863

It's disappointing, and unfortunate that this is not a logical choice for people with SR20DET. Something the

tried to convince throughout, and in the final 30 seconds.

I sincerely hope to be proven wrong.

Edited June 27, 2011 by eron

[kwickr33]

Was really considering an EFR 6258 for my SR20DET. However, it seems that there are too many components that need to be changed. The benefits do not outweigh the cost, and time required, as compared to cheaper, easier bolt-on offerings by many other companies.

http://www.nissansilvia.com/forums/index.php?showtopic=479236&view=findpost&p=6116863

It's disappointing, and unfortunate that this is not a logical choice for people with SR20DET. Something the

tried to convince throughout, and in the final 30 seconds.

I sincerely hope to be proven wrong.

I totally agree. There are soo many Bolton Garrett substitute and high flows for SR20s with proven results. The amount $$$$ spent in doing this unique project totally out weight the actual benefit from it unless there is a unique results such as GT3076's performance with 2860R's response.

How ever that makes a great piece of artical to read up on during tea breaks.

Edited June 27, 2011 by kwickr33

[scandyflick]

All the material I've found seems to suggest just that, 3071 power with response rivaling that of a 2860.

Whether or not that's true... Well, we'll all have to wait it out. Most projects using 6258s seem to be progressing as quickly as mine, at a pace that makes glacial appear swift, so dyno charts are thin on the ground.

For the amount of money I've spent so far, I could have easily gone 3071R on a high mount manifold, and probably be back on the road a month ago.

But where's the fun in that?

*waits for the obvious remark*

While admittedly, I have hit a wall, it happens to anyone that spends long enough sitting in their personal hell garage, drinking beer, and staring at a car in bits, I'm still more than happy I spent the coin on the Borg Warner.

I looked into actual 2860RS' (instead of the high flow I had), 2871s, 2876s, 3071s, T518zs, TD05s, TD06s, RX6s, etc etc etc ad nauseum, I now know more about those than I'll ever have the need to, while the 6258 may not be the best 'bang for buck' for most punters, for my dollar, it was the only way to go.