Turbo(s) for 2.8 I6
04-08-2007, 12:40 AM
#12
1.5 BAR
Join Date: Jan 2006
Location: Rain City
Posts: 1,013
Re: Turbo(s) for 2.8 I6
Originally Posted by Toysrme
2g6 from now on no more commenting when it comes to talking about spooling a turbo. You should stick to honda.
STFU asshat! God I hate know-it-alls. Without looking at maps or charts that was a top of the head guess. I also have no experience running it myself. It wasn't a set in stone number as demonstrated by the quote below. Stick to Honda? I've never owned a Honda lol. I am a DSM fan and also work with MHI turbos. A ------- thesis paper for a post is ------- gay, so take your pompus *** away from here ********!
Originally Posted by 2G6
by 3500rpm or around there and it'll never stop pulling. For $200 you can't go wrong.
04-09-2007, 07:04 AM
#15
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: Turbo(s) for 2.8 I6
sure stage 3 turbines with a big t4 comp is the way to go, can'T go wrong with the borg either on such 6 cyl.
but actually you can get full T4 turbos that spool super quick as well. THey're available with very low turbine a/r's.
recently, I made a lot of turbos for toyota's 6 cyl.
on a 2Jz, I went with a full T4 P trim 0.96 a/r with T04e bored out to 60-1 with a lug style. Result: amazing top end! the guy runs 17 psi. automatic tranny. scary fast. Spoolup: definitely not quick but good enough. The customer loves it.
http://www.blaastperformance.com/ima...eurisupra2.JPGhttp://www.blaastperformance.com/ima...eurisupra1.JPG
then on a 7mGTE, just 2 weeks ago, I went Full T4 O trim 0.58 a/r with a H trim t04B .70 a/r. REsult: early but gradual spool up. not gradual enough apparently, because this thing is absolutely dangerous at 15 psi. the customer loves it too.
then just recently, on another 7mgte, full T4 O trim twin scroll 0.48 a/r H trim, guy will put that on a SSAC twin scroll manifold. Result: will know very shortly.
but actually you can get full T4 turbos that spool super quick as well. THey're available with very low turbine a/r's.
recently, I made a lot of turbos for toyota's 6 cyl.
on a 2Jz, I went with a full T4 P trim 0.96 a/r with T04e bored out to 60-1 with a lug style. Result: amazing top end! the guy runs 17 psi. automatic tranny. scary fast. Spoolup: definitely not quick but good enough. The customer loves it.
http://www.blaastperformance.com/ima...eurisupra2.JPGhttp://www.blaastperformance.com/ima...eurisupra1.JPG
then on a 7mGTE, just 2 weeks ago, I went Full T4 O trim 0.58 a/r with a H trim t04B .70 a/r. REsult: early but gradual spool up. not gradual enough apparently, because this thing is absolutely dangerous at 15 psi. the customer loves it too.
then just recently, on another 7mgte, full T4 O trim twin scroll 0.48 a/r H trim, guy will put that on a SSAC twin scroll manifold. Result: will know very shortly.
04-09-2007, 10:45 PM
#16
3.0 BAR
Join Date: May 2005
Posts: 1,811
Re: Turbo(s) for 2.8 I6
Originally Posted by 2G6
STFU asshat! God I hate know-it-alls. Without looking at maps or charts that was a top of the head guess. I also have no experience running it myself.
You god damned newbie if you don't know what the ---- you're talking about then don't talk. ESIPECIALLY IF YOU ADMIT YOU DON'T
Ignorant *** ------- ******.
SinisterCRX mind the head gakets (If you don't know much about M blocks, please get the head torque right!).
04-09-2007, 11:09 PM
#17
0.5 BAR
Join Date: Jan 2004
Posts: 57
Re: Turbo(s) for 2.8 I6
Well, since we're on the subject about Toyota engines and turbo's, what would suit a 3.4L 5VZ-FE? I'm want to run between 10-15 psi. I'm thinking maybe a GT3782? Any experience with this engine and psi range Toysrme, blaast?
04-10-2007, 03:35 AM
#18
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: Turbo(s) for 2.8 I6
Originally Posted by john duh
Well, since we're on the subject about Toyota engines and turbo's, what would suit a 3.4L 5VZ-FE? I'm want to run between 10-15 psi. I'm thinking maybe a GT3782? Any experience with this engine and psi range Toysrme, blaast?
basically, all the turbos we discussed could work. A Borg would definitely work and give you 300-400 WHP easy. Only downside to it, it's not really customizeable but it's about right for this application. Stage 3 t3/t4 could work great, .63 or .82 a/r, as well as Full T4 turbos, with most any T04B or T04E compressor depending on your desired power and most any turbine trim but a/r not higher than 0.80 IMO. if you choose a garrett, you can easily swap turbine A/r's to fine tune your spool up anyways.
04-11-2007, 12:15 AM
#19
3.0 BAR
Join Date: May 2005
Posts: 1,811
Re: Turbo(s) for 2.8 I6
The biggest question is what kind of rpm range are you looking for the 5vz-fe?
Weasy (Johnny) sells 5vz-fe cams.
The 3.4L 5vz-fe is a Toyota truck based engine. That means it has an insane torque curve, and cuts rpm very quickly. In your case, low 5000rpm range. That means there's absolute no reason for you to have a t4 class turbo unless you're doing cams/headwork with a full stand alone to take advantage of it. Stick with a the two biggest t3/t4 hybrid turbo's. You will have a boost curve unlike almost anything on this forum. You'll read positive boost instantly off-idle rpm. You'll hit peak boost in the low 2000rpm range.
Just mind the high rpm range. Under boost It's really easy to blow passed the fuel cut. Toyota engines have fuel cut, then say 400-500rpm later have the ignition cut. You get one with a turbo, or blower on it & really flog it passed the stock fuel cut. You'll be eating a piston top from alot of air & alot of residual fuel.
Good news is the pistons are the perfect compression ratio, and the engine itself is a mother ------- tank. Easy 450bhp stock when tuned right. 550bhp reachable. Passed that is possible with say lots of water injection, and good tuning. (new valvetrain would really help that quest tho on the OEM bottom end. Really helps to have alot of rpm to make big numbers).
Weasy (Johnny) sells 5vz-fe cams.
The 3.4L 5vz-fe is a Toyota truck based engine. That means it has an insane torque curve, and cuts rpm very quickly. In your case, low 5000rpm range. That means there's absolute no reason for you to have a t4 class turbo unless you're doing cams/headwork with a full stand alone to take advantage of it. Stick with a the two biggest t3/t4 hybrid turbo's. You will have a boost curve unlike almost anything on this forum. You'll read positive boost instantly off-idle rpm. You'll hit peak boost in the low 2000rpm range.
Just mind the high rpm range. Under boost It's really easy to blow passed the fuel cut. Toyota engines have fuel cut, then say 400-500rpm later have the ignition cut. You get one with a turbo, or blower on it & really flog it passed the stock fuel cut. You'll be eating a piston top from alot of air & alot of residual fuel.
Good news is the pistons are the perfect compression ratio, and the engine itself is a mother ------- tank. Easy 450bhp stock when tuned right. 550bhp reachable. Passed that is possible with say lots of water injection, and good tuning. (new valvetrain would really help that quest tho on the OEM bottom end. Really helps to have alot of rpm to make big numbers).
04-11-2007, 07:34 AM
#20
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: Turbo(s) for 2.8 I6
All true, we're all on the same page.
just don'T forget that on top of the usual Truck T4 turbines that are huge, some performance ones exist with smaller wheels and low a/r's. The largest T3 turbine is larger in terms of flow than the smallest T4 turbine.
example: T3 stage V has 61.95 mm exducer while T4 N trim is only 52.60 mm. Yes, a t3 wheel exducer almost 3/8" larger than T4.
just don'T forget that on top of the usual Truck T4 turbines that are huge, some performance ones exist with smaller wheels and low a/r's. The largest T3 turbine is larger in terms of flow than the smallest T4 turbine.
example: T3 stage V has 61.95 mm exducer while T4 N trim is only 52.60 mm. Yes, a t3 wheel exducer almost 3/8" larger than T4.
