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Old 01-03-2017, 04:26 PM   #1
stonie
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Default which turbo for b280ft

after dynoing my car with my kinugawa 20T the result was 310hp and 620nm at the wheel at 2300 rpm... after 4500 rpm the engine needs more air than this turbo can bring.

which turbo should i take for my engine, my goal is 400-500hp but not at 6000rpm, more or less between 3500 and 4500 rpm so it should start boosting something about 3000rpm.

i thought about a gtx3076r , or is this to big?

should be with internal WG and T3 flange
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Old 01-03-2017, 04:27 PM   #2
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3076 should be perfect
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Old 01-03-2017, 05:18 PM   #3
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a/r ?
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Old 01-03-2017, 08:01 PM   #4
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What's your budget?
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Old 01-03-2017, 08:05 PM   #5
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a/r ?
Assuming that your TD05 is a 10cm unit, I would imagine something like this would be good:

http://www.atpturbo.com/mm5/merchant...Category_Code=
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Old 01-03-2017, 11:47 PM   #6
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If you need the flow capacity from the GTX 76mm compressor wheel, then the 3576 is really the better choice. The larger turbine is more efficient at the lower speeds that the 76mm wheel runs at, compared to the 71mm or 67mm compressors that are also available with the GT30 turbine wheel.

In other words I'm suggesting either the GTX3071R or GTX3576R, and not bothering with the awkward middle child.
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Old 01-03-2017, 11:57 PM   #7
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Originally Posted by Harlard View Post
Assuming that your TD05 is a 10cm unit, I would imagine something like this would be good:

http://www.atpturbo.com/mm5/merchant...Category_Code=
That 0.78 A/R turbine housing is another one that has been adapted to fit the turbine wheel, but not designed for it.

For the GTX30/35 family I'd stick with the 0.63, 0.82, and 1.06 A/R housings in single scroll variety, and 0.61, 0.83, 1.01 A/R for twin scroll. All of those were designed from the start to work with these turbos.
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Old 01-04-2017, 12:10 AM   #8
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That 0.78 A/R turbine housing is another one that has been adapted to fit the turbine wheel, but not designed for it.

For the GTX30/35 family I'd stick with the 0.63, 0.82, and 1.06 A/R housings in single scroll variety, and 0.61, 0.83, 1.01 A/R for twin scroll. All of those were designed from the start to work with these turbos.
Every damn time. How do I even manage that?
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Old 01-04-2017, 07:57 AM   #9
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What's your budget?
if its possible not more than ~1000

i dont know if the gtx3071r with a/r .64 is big enough for this goal!?

and the gtx3576 is f*** huge
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Old 01-04-2017, 09:40 AM   #10
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pics of the engine?
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Old 01-04-2017, 10:19 AM   #11
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Old 01-04-2017, 01:10 PM   #12
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Efr7064
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Old 01-04-2017, 01:12 PM   #13
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I thought you meant PRV. Slight disappoint
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Old 01-04-2017, 01:18 PM   #14
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The title would imply a 6cyl, might want to revamp the turbo recommendations.
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Old 01-04-2017, 02:38 PM   #15
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The title would imply a 6cyl, might want to revamp the turbo recommendations.


damn your right, didnt thought about that. i made a 2.8 T liter out of a b230ft so i called it b280ft
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Old 01-04-2017, 02:45 PM   #16
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damn your right, didnt thought about that. i made a 2.8 T liter out of a b230ft so i called it b280ft
Well you might need that big turbo then, I thought the title was a typo. Much strokage I assume?
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Old 01-04-2017, 02:49 PM   #17
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Well you might need that big turbo then, I thought the title was a typo. Much strokage I assume?
first oversize bore, the rest with crankshaft, crank and pistons , yes!

are you sure i need that big, i had now a td04 20T and i got 310 whp and 620nm ??
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Old 01-04-2017, 04:15 PM   #18
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first oversize bore, the rest with crankshaft, crank and pistons , yes!

are you sure i need that big, i had now a td04 20T and i got 310 whp and 620nm ??
Holy crap that's a lot of torque. Custom cam? And what kind of exhaust manifold are you using?
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Old 01-04-2017, 04:19 PM   #19
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the EFR would be a good choice, on the GT side of things, I would imagine you'd want a .83 minimum hot side size, you need to be able to get the air out in addition to getting it in.
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Old 01-04-2017, 04:27 PM   #20
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Originally Posted by DMFWallace View Post
Holy crap that's a lot of torque. Custom cam? And what kind of exhaust manifold are you using?

im driving the kg2t cam. ported oem exhaust manifold

Cam data: Intake lift 10.5mm (0.413")
Exhaust lift 11.9mm (0.469")
Nock angle 114 degrees
Duration 300 degrees

Last edited by stonie; 01-04-2017 at 04:34 PM..
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Old 01-04-2017, 04:33 PM   #21
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im driving the kg2t cam. ported oem exhaust manifold
Color me impressed. Intake manifold is original as well?
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Old 01-04-2017, 04:50 PM   #22
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Color me impressed. Intake manifold is original as well?

yes!
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Old 01-05-2017, 02:33 AM   #23
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I came here for some JohnLane style PRV6 porn. Not dissapointed, though.
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Old 01-05-2017, 03:24 AM   #24
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damn your right, didnt thought about that. i made a 2.8 T liter out of a b230ft so i called it b280ft
Haha !! i also was expecting a nice V6 Turbo But daaaaamn. 2.8 Litres R4 how does this banger go?
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Old 01-05-2017, 04:03 AM   #25
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Haha !! i also was expecting a nice V6 Turbo But daaaaamn. 2.8 Litres R4 how does this banger go?
i think with you can imagine how it goes when you know a gasoline engine from the 90's makes 310hp and 620nm at 2300 rpm @ the wheels!

no , really , is crazy to drive. i need to get the power between 3000 and 45000 rpm, now the car is shaking like titanic crashing ice when i give some throttle at low rpm.
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