Official STS Rear Mount Turbo Discussion Thread
08-07-2011, 07:44 PM
#2621
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There is something wrong there. The boost comes on very late, and there is nothing going on till 5500rpm. For comparison sakes here is a 6265 T4 JB .81 a/r on 10psi (logged). You can see that there is 10psi at 3800rpm.
This was also a miled out, tired stock VQ. I know that the turbo is further back, but it should not be that laggy. What hot side do you have on that 6265?
This was also a miled out, tired stock VQ. I know that the turbo is further back, but it should not be that laggy. What hot side do you have on that 6265?
08-07-2011, 09:55 PM
#2622
I use 2.75" charge piping on the mid mount kit from the turbo to the FMIC, and 3" piping from FMIC to TB.
The kit is much closer to the engine, yes. It is actually a bit closer than the top mount kits when you look at the length of exhaust piping before the turbo. However, the graph posted is still way off. The turbine on the graph I posted (Dynosty dyno) has a much larger T4 .81 a/r. This is a significant size increase over the standard T3 .63 a/r (I think) that STS uses.
EDIT:
Just noticed that the poster thinks the turbo used was a 6265..but there are no other specs..???
nice numbers but isn't a mid-mount turbo creat boost alot faster and at a lower rpm range cuz the turbo is much closer? And my dyno was done at around 105 degree weather, and around 45% humidity wouldn't this cause a performance difference at this weather? and wouldn't a bigger fmic cause more boost lag? Just asking.
EDIT:
Just noticed that the poster thinks the turbo used was a 6265..but there are no other specs..???
Last edited by Boosted Performance; 08-07-2011 at 10:09 PM.
08-08-2011, 11:01 PM
#2623
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I use 2.75" charge piping on the mid mount kit from the turbo to the FMIC, and 3" piping from FMIC to TB.
The kit is much closer to the engine, yes. It is actually a bit closer than the top mount kits when you look at the length of exhaust piping before the turbo. However, the graph posted is still way off. The turbine on the graph I posted (Dynosty dyno) has a much larger T4 .81 a/r. This is a significant size increase over the standard T3 .63 a/r (I think) that STS uses.
EDIT:
Just noticed that the poster thinks the turbo used was a 6265..but there are no other specs..???
The kit is much closer to the engine, yes. It is actually a bit closer than the top mount kits when you look at the length of exhaust piping before the turbo. However, the graph posted is still way off. The turbine on the graph I posted (Dynosty dyno) has a much larger T4 .81 a/r. This is a significant size increase over the standard T3 .63 a/r (I think) that STS uses.
EDIT:
Just noticed that the poster thinks the turbo used was a 6265..but there are no other specs..???
This is an STS remote-mount turbo kit for the 350Z/G35. The kit is in great condition and has been substantially upgraded from its original form. I will not part out this kit. However, I will be very aggressive on pricing since I want this kit sold.
The upgraded parts include the following:
Precision Turbo 6265 – 62MM Billet Aluminum Compressor Wheel – New Gapless Seals
This turbo was very recently serviced under warranty by Precision Turbo on May 11, 2010. For all intents and purposes it is in perfect condition. This is a Precision 6265 with a 62MM billet aluminum compressor, and brand new gapless oil seals. This unit has a ball-bearing CHRA. It spools faster and makes more power than the standard turbo STS includes with their kits. Precision Turbo rates this turbo at 670HP.
STS Upgraded Intercooler
This upgraded intercooler is longer, wider, and thicker than the standard intercooler STS includes with its kits. This will increase cooling efficiency and relieve pressure issues associated with running the kit at higher boost levels.
The following parts are included in the sale:
Precision Turbo 6265 – 62MM Billet Aluminum Compressor Wheel – New Gapless Seals
STS Upgraded Intercooler
Turbo XS UTEC
STS Oil Pump
Tial Blow Off Valve on STS Piping – JetHot Coated
Tial Wastegate on STS piping with Resonator – All JetHot Coated - and Magnaflow Exhaust Tip for G35
STS Tailpipe – JetHot Coated and Header Wrapped - with Magnaflow Exhaust Tip for G35
STS Intake Pipes – JetHot Coated – QTY 7
STS Air Filter Pipe (Not Pictured)
STS Air Filter Shield (Not Pictured)
STS K&N Air Filter (Not Pictured)
STS Pre Filter – Brand New (Not Pictured)
Oil Pump Assembly
1 Psi Switch
Stainless Oil Hose (Not Pictured)
3/8” Oil Return Hose
Wiring Harness (Not Pictured)
Oil Pump Bracket
PCV Switch Valve
Hardware – Silicone Couplers, Clamps, Bolts, Nuts, Screws
This kit is in fully-working order. It has been taken care of very well and has been cleaned for final sale. It is complete except for fuel parts, so you will need to purchase fuel injectors and a fuel pump for your own application. More pictures are available upon request. If you have any questions, please respond to this thread or PM me. Many thanks.
08-09-2011, 06:26 AM
#2625
The crucial piece of information is still missing on the turbo. Is it a T3, a T4 and what a/r is the turbine housing. The following are available for the 6265:
- T3 .63 or .82 A/R with 4 bolt (2.5") discharge
- T3 .63 A/R with 5 bolt discharge (with or without wastegate hole)
- T3 .63 or .82 A/R with 3" V-Band discharge
- V-Band inlet .82 A/R with V-Band discharge
- T4 Tangential .58, .68, .81, or .96 A/R with 3 5/8" V-Band discharge
- T4 Divided .84, 1.0, 1.15, or 1.32 A/R with 3 5/8" V-Band discharge
- T3 .63 or .82 A/R with 4 bolt (2.5") discharge
- T3 .63 A/R with 5 bolt discharge (with or without wastegate hole)
- T3 .63 or .82 A/R with 3" V-Band discharge
- V-Band inlet .82 A/R with V-Band discharge
- T4 Tangential .58, .68, .81, or .96 A/R with 3 5/8" V-Band discharge
- T4 Divided .84, 1.0, 1.15, or 1.32 A/R with 3 5/8" V-Band discharge
08-09-2011, 02:12 PM
#2626
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http://g35driver.com/forums/engine-p...-bb-turbo.html
this is all i found on his post but i will email him for more info on the turbo information.
this is all i found on his post but i will email him for more info on the turbo information.
08-09-2011, 02:19 PM
#2627
http://g35driver.com/forums/engine-p...-bb-turbo.html
this is all i found on his post but i will email him for more info on the turbo information.
this is all i found on his post but i will email him for more info on the turbo information.
From my experience with this turbo (turbine wheel) in 5th gear (dyno gear) I would see full boost (8-9psi) by 3000rpm. Not sure how that compares to your boost graph, and other STS kits.
Last edited by Boosted Performance; 08-09-2011 at 02:20 PM.
08-09-2011, 04:33 PM
#2628
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hmm well i will talk to my mechanic about this. the dyno graph you posted is that the same turbo as mine or different? I'm just trying to find out why i'm not hitting boost at a sooner rpm.
08-09-2011, 07:47 PM
#2629
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first, ask your tuner what gear did he use do the dyno pull. I know some tuner use the 3rd gear to do their pulls. If he uses 3rd then that may explain the lag because there is less load. You want to do a 5th gear pull because that is 1:1 gearing in our car. he may also have started the WOT late in the RPM
08-09-2011, 10:54 PM
#2630
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ok i will get back to you guys tomorrow and find out what gear he did the pull on and what rpm he started on the WOT. would my kinetix plenum v+ cause some lag and i also have the upgraded intercooler but i also have another question. my intake pipe rides below the passenger side is there another way to relocate the pipe cuz it seems pretty low to me? When i got the kit installed it came with extra piping?
08-10-2011, 02:31 PM
#2631
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Looks to me like it is a T4 .58 a/r, in which case it should spool a bit better than what you have posted. This is the picture I was looking at:
From my experience with this turbo (turbine wheel) in 5th gear (dyno gear) I would see full boost (8-9psi) by 3000rpm. Not sure how that compares to your boost graph, and other STS kits.
From my experience with this turbo (turbine wheel) in 5th gear (dyno gear) I would see full boost (8-9psi) by 3000rpm. Not sure how that compares to your boost graph, and other STS kits.
08-15-2011, 08:51 AM
#2633
no one dynos in 5th gear on a FI car. Sure its 1:1 but wheel speeds get insane and the wear on the dyno is alot more.
dyno is only a tuning tool, so if all the pulls are done in the same gear, all the relative gains are the same. Thats all you need to be concerned with.
dyno is only a tuning tool, so if all the pulls are done in the same gear, all the relative gains are the same. Thats all you need to be concerned with.
08-15-2011, 09:30 AM
#2634
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ok cool thats what my mechanic said. good to know that, thanks. And i talk to him about the lag on my boost and why i was getting thoughs dyno reading. He said he was going to try to fix that or reroute something to get an earlier boost on the rpm range.
08-16-2011, 06:22 AM
#2635
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no one dynos in 5th gear on a FI car. Sure its 1:1 but wheel speeds get insane and the wear on the dyno is alot more.
dyno is only a tuning tool, so if all the pulls are done in the same gear, all the relative gains are the same. Thats all you need to be concerned with.
dyno is only a tuning tool, so if all the pulls are done in the same gear, all the relative gains are the same. Thats all you need to be concerned with.
I wasnt concern about the gain on rawley_12003 Dyno. I was concerned about the huge lag and that is why I ask what gear was used on the dyno.
08-16-2011, 04:31 PM
#2637
I found my first dyno sheet from a long time ago when I was experimenting with the kit, and learning how to tune. This dyno also has the boost curve, and you can see that it tapers way off towards the end, as it was only on spring pressure and the w/g line was right at the compressor.
Either way it gives you an idea of what the boost curve would look like with a T3 .63 a/r housing. This was an old Garret T60 I believe, so just about the same as a stock STS turbo. So at peak HP there was about 5.8psi of boost here, and falling hard so please ignore that. I think you would be interested in the 3500-4500rpm range.
Either way it gives you an idea of what the boost curve would look like with a T3 .63 a/r housing. This was an old Garret T60 I believe, so just about the same as a stock STS turbo. So at peak HP there was about 5.8psi of boost here, and falling hard so please ignore that. I think you would be interested in the 3500-4500rpm range.
Last edited by Boosted Performance; 08-16-2011 at 04:33 PM.
08-16-2011, 05:10 PM
#2638
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well i think i'm going to tinker with what i have like change the configuration with charge pipe or whatever my mechanic decides. Oh i have a question as well since my power is in the high rpm range will this put a big strain on my built motor? I don't go any higher than 6k on the rpm and was pretty satisfied with that rpm range. I kind of want my engine to last for a while lol...
09-13-2011, 07:27 PM
#2639
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well got my long block engine in from import parts pro, pretty excited talked to my mechanic and he said he is trying to get it done by the end of the month. The longblock is a raw long block so it has no cams, cam gear, or timing chain just the main internals. So i have a question for you guys well i am transfering all my parts from my old engine to the new one, like cams, and plenums etc. So question is would transfering my timing chain to the new motor, would that hurt me in any way? Cuz i know there isn't any routine maintenance on replacing the timing chain is nothing is wrong with it.
09-14-2011, 06:35 AM
#2640
ya thats why it doesnt really make sense to buy a long block from IPP. all he did was install head studs bolt the heads down, which takes a couple minutes.
You still have to do the entire assembly.
If your heads are together and you are keeping them stock, I'd just bolt your fully assembled heads right on there.
unless you had a ton of miles, i dont think anyone puts a new chain on
You still have to do the entire assembly.
If your heads are together and you are keeping them stock, I'd just bolt your fully assembled heads right on there.
unless you had a ton of miles, i dont think anyone puts a new chain on