stock LS boost?
08-23-2007, 08:57 PM
#31
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Re: stock LS boost?
oh yeah i get 32 miles per gallon on the highway too.
it's all in the tune!
08-24-2007, 11:32 AM
#33
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Re: stock LS boost?
What size turbo were you using? It never mentions that anywhere. I highly doubt on a 60-1 or a T series, that 10 psi would be surviveable.... And I doubt it would make that power level on a T3 or TD04 @ 10 psi....so, relevant information, what turbo were you using at that boost level?
08-24-2007, 12:03 PM
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Re: stock LS boost?
i.e. A T3 Super 60 would produce the same #'s, at about 15-16 lbs of boost. However, it would be about 70% efficient doing so, and spool a hell of a lot faster, giving it a wider power band, and cooler air than the T3/T4 57 @ the same power level. (About 60% efficient @ 10 lbs)
I mean, it's all good, if you're comparing apples and apples. You don't want the guy going and getting, for instance, a T series or Thumper, and boosting 10 psi. It's not the same. Just like getting a straight T04E series, or T3 isn't the same......
You can't just generically say "10 psi".....
A T3 Super 60 will run it at 16-17, be in its efficiency, and produce the same power, probably more safely, with little or no risk of surge if you crank it up a bit.....
This is what I'm trying to get across. Remember, its not just you and the thread starter reading this, with an understanding that it's a T3/T04E 57 trim turbo. It's a bunch of people, who will try a lot of different stuff, and come out with a LOT different results, including blown motors at less psi, and far lower power levels at the same psi....
08-28-2007, 07:28 AM
#36
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Re: stock LS boost?
That's a very good #. I think it's important to list turbo size though.
i.e. A T3 Super 60 would produce the same #'s, at about 15-16 lbs of boost. However, it would be about 70% efficient doing so, and spool a hell of a lot faster, giving it a wider power band, and cooler air than the T3/T4 57 @ the same power level. (About 60% efficient @ 10 lbs)
I mean, it's all good, if you're comparing apples and apples. You don't want the guy going and getting, for instance, a T series or Thumper, and boosting 10 psi. It's not the same. Just like getting a straight T04E series, or T3 isn't the same......
You can't just generically say "10 psi".....
A T3 Super 60 will run it at 16-17, be in its efficiency, and produce the same power, probably more safely, with little or no risk of surge if you crank it up a bit.....
This is what I'm trying to get across. Remember, its not just you and the thread starter reading this, with an understanding that it's a T3/T04E 57 trim turbo. It's a bunch of people, who will try a lot of different stuff, and come out with a LOT different results, including blown motors at less psi, and far lower power levels at the same psi....
i.e. A T3 Super 60 would produce the same #'s, at about 15-16 lbs of boost. However, it would be about 70% efficient doing so, and spool a hell of a lot faster, giving it a wider power band, and cooler air than the T3/T4 57 @ the same power level. (About 60% efficient @ 10 lbs)
I mean, it's all good, if you're comparing apples and apples. You don't want the guy going and getting, for instance, a T series or Thumper, and boosting 10 psi. It's not the same. Just like getting a straight T04E series, or T3 isn't the same......
You can't just generically say "10 psi".....
A T3 Super 60 will run it at 16-17, be in its efficiency, and produce the same power, probably more safely, with little or no risk of surge if you crank it up a bit.....
This is what I'm trying to get across. Remember, its not just you and the thread starter reading this, with an understanding that it's a T3/T04E 57 trim turbo. It's a bunch of people, who will try a lot of different stuff, and come out with a LOT different results, including blown motors at less psi, and far lower power levels at the same psi....
We know this, we aren't stupid. The reason that I had a 50 trim on my B16 was because I wanted to turn up the boost when I got my bottom end forged.
08-28-2007, 12:00 PM
#38
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Re: stock LS boost?
But if you look on the other forum referenced in this post, you'll find that in every case, the turbo, injector size, etc., was listed? This is so as to not make everyone look like a dumbass.
Seriously man. You said
"upgrade to 440 injectors, hondata s300 tuned, 10-12psi your looking at a safe 275hp 210torq daily driven...."
But that wouldn't hold true if you were on a T25.... Or a T-series.....
That's why you see that very relevant information listed.
I put down 272 hp, pump gas, on my daily. And I'm pushing a TD04-16.....
Walbro 255 to feed, 58 psi fuel pressure, 590 cc injectors, 18 lb boost spike with a 13 lb hold.... 29-30 degrees of timing advance....2.4L motor.
I'm looking to get 400 out of a 1.6L fairly soon. But I'm looking at about 19 lbs of boost to do so, and 730-750 cc injectors, with a rising rate regulator to make sure I have plenty available to tune on the top side. Built motor, of course.....A T3/T04E turbo, 46 or 50 trim, .63 A/R Stage 3 Turbine.... etc....
08-29-2007, 11:30 AM
#40
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Re: stock LS boost?
On my setups years ago, I used to run 2/10 ratio of 112oct/93oct.
On 8psi my AFR's stayed 12:1 & richer til revlimit.
On 10psi my AFR's climed to 13:1 towards the last 300-400 rpm.
I had this setup for 2 years and ran 12.2 @ 110 in a full interior EG. And it made 242whp @ 8-9psi. at performance autosports.
The setup never failed, I swapped in Rods/Pistons/Injectors/Uberdata, re tuned and daily drove it for another year on 20psi with pump gas and 26psi with 116oct.
Setup went 11.3 @ 120 missing 4th and 5th gear. Ran 6.9@100 in the 1/8th.
All on the same engine....
Have fun with it, LS's are fun motors to boost and very durable. Just setup it right for however you plan to do it.
-----------------------------------
To the guy above:
This setup was making about 450whp on 440cc injectors.
85psi base fuel pressure
111psi peak fuel pressure.
60trim T3/T04E
Last edited by JDMS1eeper; 08-29-2007 at 11:34 AM. Reason: cuz