9.0.1-9.5.1 gt2876r ar.63?
#21
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specific and honest headroom would be after final tuning just sub350whp. my last car i had set up to run 345whp on the street and 370whp at the track, my goal is to keep the same type of set up in a car that is smaller lighter and handles better, and also needs less power. my whp # goal is Street:290whp Track:sub350whp
This is great. Your power goals keep going up and up and up. I like this thread.
Buy my hotside. GT3071 .82 A/R w/ BEGI S5 manifold, tial wastegate and 3" stainless steel downpipe. 23psi in 5th gear by 3700RPM as of last night. My turbo has plenty of headroom still to make more power.
Oh and by the way I am running stock head gasket and have 9:1 pistons. 398hp.
#22
Faeflora dual tuning is a pretty common thing, and gaining more power during the course of tuning is not uncommon, Nagase asked me to be honest and complete with my numbers, in my first post i wrote 300hp, my goal for my car is 290whp to drive on the street, sub350whp on the track, that in no way changes my power goals, it just further explained the setup i was aiming for. im not trying to start an argument, just defending that i may be dumb but im not a dumb kid that is coming on here to smoke pipe dreams of a fast turbo car at 30psi that "drives like a gokart". im sure that happens alot, it certainly does on ka-t.
that being said: i wasnt sure if bumping the comp. with a headgasket worked on the 1.8 or not, obviously the stock one can put some serious numbers down (398 8k rev thats hella impressive) but the gt30 is a little (lot) bigger than i want haha thanks though, how much monies are you selling it for?
that being said: i wasnt sure if bumping the comp. with a headgasket worked on the 1.8 or not, obviously the stock one can put some serious numbers down (398 8k rev thats hella impressive) but the gt30 is a little (lot) bigger than i want haha thanks though, how much monies are you selling it for?
#25
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Faeflora dual tuning is a pretty common thing, and gaining more power during the course of tuning is not uncommon, Nagase asked me to be honest and complete with my numbers, in my first post i wrote 300hp, my goal for my car is 290whp to drive on the street, sub350whp on the track, that in no way changes my power goals, it just further explained the setup i was aiming for. im not trying to start an argument, just defending that i may be dumb but im not a dumb kid that is coming on here to smoke pipe dreams of a fast turbo car at 30psi that "drives like a gokart". im sure that happens alot, it certainly does on ka-t.
that being said: i wasnt sure if bumping the comp. with a headgasket worked on the 1.8 or not, obviously the stock one can put some serious numbers down (398 8k rev thats hella impressive) but the gt30 is a little (lot) bigger than i want haha thanks though, how much monies are you selling it for?
that being said: i wasnt sure if bumping the comp. with a headgasket worked on the 1.8 or not, obviously the stock one can put some serious numbers down (398 8k rev thats hella impressive) but the gt30 is a little (lot) bigger than i want haha thanks though, how much monies are you selling it for?
I'd sell my hotside for $1900.
#27
You don't want this noob's chewed up turbo.
Trust me.
You really don't.
I'd recommend contacting Abe at ARTech or Tim at ABSURDflow, get a manifold, downpipe, exhaust, pick up a 2871 .86, get some Trackspeed inconel studs and be done with it. You'd have an optimal setup (as long as you didn't get a log manifold or something dumb) that would actually last in track conditions.
And you'd have a turbo that isn't chewed to hell.
Trust me.
You really don't.
I'd recommend contacting Abe at ARTech or Tim at ABSURDflow, get a manifold, downpipe, exhaust, pick up a 2871 .86, get some Trackspeed inconel studs and be done with it. You'd have an optimal setup (as long as you didn't get a log manifold or something dumb) that would actually last in track conditions.
And you'd have a turbo that isn't chewed to hell.
#28
Tour de Franzia
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im sorry to sound really redundant, but i dont know how to read turbo maps, can you explain why getting the 71 with a bigger AR would be better than the 76 with a smaller AR? i am not totally knowledgeable on this by any means, but from what i gathered from reading getting the larger compressor with the smaller turbine would allow for decent spool time while leaving a little more head room for higher boost. maybe im backwards, please correct me if im wrong
http://www.maptun.com/webshop/pics_f...548_comp_e.jpg
Today I ran the car at 14psi which is a "pressure ratio" of 2; it's making about 260whp which is about 23-25 "lb/min of air flow" (it's fast). That's right in the prime island, when I lower boost to 9psi, I'm way under and power falls off quickly. The closer you get to the prime island, the more efficient and better the turbo selection.
As for the turbine map, that's a little different. The pressure ratio and flow don't correspond with the compressor, think of the amount of pressure in the exhaust manifold. The bigger the turbine AR, the more it flows and less backpressure it makes. Lot's of people think a smaller turbine will make the turbo spool-up to target boost faster...my turbo is a perfect example where this is not true. The smaller turbine makes less power and spins up slower. A larger turbine means less bottle neck, more spark angle, and smoother "spool-up".
#29
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You don't want this noob's chewed up turbo.
Trust me.
You really don't.
I'd recommend contacting Abe at ARTech or Tim at ABSURDflow, get a manifold, downpipe, exhaust, pick up a 2871 .86, get some Trackspeed inconel studs and be done with it. You'd have an optimal setup (as long as you didn't get a log manifold or something dumb) that would actually last in track conditions.
And you'd have a turbo that isn't chewed to hell.
Trust me.
You really don't.
I'd recommend contacting Abe at ARTech or Tim at ABSURDflow, get a manifold, downpipe, exhaust, pick up a 2871 .86, get some Trackspeed inconel studs and be done with it. You'd have an optimal setup (as long as you didn't get a log manifold or something dumb) that would actually last in track conditions.
And you'd have a turbo that isn't chewed to hell.
My 3071 is actually in perfect shape- I just was not used to what a turbo sounds like at 20psi.
#31
Tour de Franzia
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Join Date: Jun 2006
Location: Republic of Dallas
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Remember back to 2008, back when I was building my car, and everyone told me the GT2860RS was too big, my turbine was too large, and that it would be tough to drive? I wanted 300whp then, got it, now I race it at 210 and 240whp, lol. Oh the times, how they change.
#32
The closer you get to the prime island, the more efficient and better the turbo selection.
As for the turbine map, that's a little different. The pressure ratio and flow don't correspond with the compressor, think of the amount of pressure in the exhaust manifold. The bigger the turbine AR, the more it flows and less backpressure it makes. Lot's of people think a smaller turbine will make the turbo spool-up to target boost faster...my turbo is a perfect example where this is not true. The smaller turbine makes less power and spins up slower. A larger turbine means less bottle neck, more spark angle, and smoother "spool-up".
As for the turbine map, that's a little different. The pressure ratio and flow don't correspond with the compressor, think of the amount of pressure in the exhaust manifold. The bigger the turbine AR, the more it flows and less backpressure it makes. Lot's of people think a smaller turbine will make the turbo spool-up to target boost faster...my turbo is a perfect example where this is not true. The smaller turbine makes less power and spins up slower. A larger turbine means less bottle neck, more spark angle, and smoother "spool-up".
#36
Boost Czar
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which makes the 2871 the next logical choice.
#37
2560:
46.5mm 60.1mm 60 0.60 53.0mm 62 0.64
2860RS:
47.2mm 60.1mm 62 0.60 53.9mm 76 0.64
So it's not huge, .7mm more inducer, 2 more trim. But if the limiting factor was the compressor instead of the turbine, going to a .86 A/R turbine housing shouldn't gain power... but it does.
#39
Best answer:
http://www.msextra.com/feature-xref.html
Short answer:
MS1 won't let you do sequential fuel and spark. Other than that, I was really happy with my MSPNP until I needed to run an LS1 throttle body and GM idle valve. Not really applicable to you just yet.
http://www.msextra.com/feature-xref.html
Short answer:
MS1 won't let you do sequential fuel and spark. Other than that, I was really happy with my MSPNP until I needed to run an LS1 throttle body and GM idle valve. Not really applicable to you just yet.
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