| Author |
Message |
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4614
Reg: 09-2007
|
The thing is that compared to a Garrett turbo, the turbine side on the EFRs is pretty big. You really need to wind up the boost to see some results on these things.
Also if you look at the compressor map on the 8374, 20psi is barely halfway up. |
Kurt Atzmuller
DieHard
Victoria
TT`s
Posts: 647
Reg: 05-2011
|
Too late to try an external gate Tai?
It would be nice to hold a flat boost line like 20psi across entire rev range..
Might gain another 20 or so rwkws top end.
A 4 inch dump would help bring it on a bit earlier too but its all $$ and pulling it out again to make any changes from here. |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 7543
Reg: 03-2006
|
At the end of the day it is a 7670 turbo which is pretty large for only 2.5l engine to feed . Regardless of design.
Essentially it is similar to a t04z . Which would give you similar boost response |
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4615
Reg: 09-2007
|
Thats right Daniel. The titanium wheel is supposed to give you good response but its still pretty darn big! |
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4655
Reg: 09-2007
|
Updates Tai? Hows the car going? |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1458
Reg: 04-2006
|
Hey Ali,
Not much to report on at the moment.
I am waiting on the 7163 that I have on order. It should be here mid March, and I got myself a trust intercooler kit from rhdjapan which is sitting in my room ready for when the turbo arrives.
Perrin has tested both of these turbos and the difference does seem to be about 1000rpm better in response.
I did a mash up of both of the graphs to mark the difference in rpm to 15lb and 25lb..
I will be very happy if the 7163 can achieve this and 300rwkw |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1459
Reg: 04-2006
|
Also, the 7163 compressor map seems to be much wider and more suitable for petrol pressure ratios.
This is the plot for a 2.5L engine at 21PSI
7163
7670
|
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 7555
Reg: 03-2006
|
Such a better looking graph man !!! |
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4658
Reg: 09-2007
|
Right so you are going smaller then!
I am quite apprehensive about the EFRs at this stage. Still cant find too much information about them on JZs. The match bot suggests that 8374 would be the option for me, but I am leaning towards Precision 6262 as people have had great results with it |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1460
Reg: 04-2006
|
Yeah, it's the new one in the smaller frame that uses the mixed flow turbine.
I think the combination of the smaller turbine, smaller compressor and smaller a/r while still being 550/600hp capable will be a great 1J street setup that can run 20lb to red-line everyday.
If the internal gate gives me dramas, there is a V-band non waste-gate housing available for it too 
I have heard that the Precision's do well at drags and dyno ie top end power.
If you are going to use a T4 manifold should give the EFR a go.. (possibly try mine out?)
I may even keep it in case I go 1.5J in the future as I think it will be MUCH better suited to the 2J (and there might still be something weird going on with my setup) |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1461
Reg: 04-2006
|
Thanks Dan,
Yeah, I think it will be a much better match, and I plan on getting the speed sensor so I can see exactly where I am on the map. |
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4666
Reg: 09-2007
|
All my reading suggests that the precisions spool better than equivalent Garretts.
My reading on the EFR suggests that they are more suited to small capacity 4 pot engines...
the 7670 would be crazy spool on the 2jzgte, but I wanna have the capability of making 600rwhp on E85 |
Sebastian Grant
Goo Roo
nsw
soarer TT
Posts: 2213
Reg: 01-2008
|
Interesting read, garrett vs precision.
http://www.turbodirect.co.za/site/index.php?option=com_content&view=article&id=775&Itemid=55 |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1462
Reg: 04-2006
|
Ali, driftcarl is making 440awkw with his 7670 rex.
Good news is that it looks like I won't have to modify my dump! Well done Borgwarner!
|
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4668
Reg: 09-2007
|
Is driftcarl running EWG or IWG? |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1463
Reg: 04-2006
|
EWG i'm pretty sure.. |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 7556
Reg: 03-2006
|
Sebastian, that test was done by a garret dealer .
Honestly , set your goal hp , and pick the turbo that suits . No point putting 800hp of turbo on to make 400rwhp . |
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4739
Reg: 09-2007
|
Tai any movement on this? Interested to see some more results on the EFRs |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1485
Reg: 04-2006
|
Still waiting...  |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 7573
Reg: 03-2006
|
Just go a Precision and be done with it |
Ali Saeed
Goo Roo
WA
RSP JZZ30
Posts: 4743
Reg: 09-2007
|
I would much rather wait for the EFR. That being said I need to get some seat time in a 6262/6266 equipped car |
James Harris
Goo Roo
QLD
GT Starlet
Posts: 3697
Reg: 07-2005
|
Tai !
Good read and even better to see that you are still playing the Soarer game buddy!
I miss my white barge - and now I miss my old white whippet also (Gt Starlet) - now its just me and Scotty the scooter here in Darwin but it has cracked 30,000KM now which is pretty awesome haha. |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1492
Reg: 04-2006
|
Hey James! Good to see you're still alive
Yeah, it's been a pain waiting for Brog Warner to deliver, but hopefully it will be worth it.
30,000 on the death machine is quite an achievement! Still on the original tank of fuel? Haha.
The wifes 323 protege committed suicide a few weeks back and we just picked up a brand new 'rolla accent sport in manual of course (chirps second!)... anyway... off track..
The sales man is a mad Supra fan (has 3) we chatted for ages, and he was kind enough to offer his 2J cams to me which should help it breathe a bit better up top along with the new front mount and smaller snail.
GCG say mid June now, but if it ends up taking much longer i'm going to have to take the hit and go with the GT3076  |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1494
Reg: 04-2006
|
Just got an email from GCG saying that the BW shipment arrived!
    
Should I start a new 7163 thread? |
Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!
Posts: 1496
Reg: 04-2006
|
It's HERE!!!
|
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