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Deeply truly sorry prawn. I thought it was more
That's OK SuperK I remember these things
Deeply truly sorry prawn. I thought it was more
when you change hardware mods, I would always suggest custom map to make benefit from improved hardware.
It would help, but I would not expect by much.
I would be putting my ££ on other mods first to improve flow, cooling etc... intake, downpipe, fmic... then the slippery slope takes hold
manifolds working well. egt's nice 845-855 max on the 23psi level
One thing that needs to be answered with these small turbos is whether inlet manifold upgrades will yield anything.
Obv at 350+hp they're moving a fair amount of air, so the answer is probably.
Put tufftys mani on there while he paints something, please. No one has ever experimented with that on one of these yet
One thing that needs to be answered with these small turbos is whether inlet manifold upgrades will yield anything.
Obv at 350+hp they're moving a fair amount of air, so the answer is probably.
Put tufftys mani on there while he paints something, please. No one has ever experimented with that on one of these yet
One thing that needs to be answered with these small turbos is whether inlet manifold upgrades will yield anything.
Obv at 350+hp they're moving a fair amount of air, so the answer is probably.
Put tufftys mani on there while he paints something, please. No one has ever experimented with that on one of these yet
Where is the probe, Bill? Or does the car have one fitted as stock?
Lupo still uses the stock inlet manilfold????
stock 023 position doug.. in the turbo
Actually, I raised the question before I understood the turbo's configuration. At first I'd thought it was a k16-series compressor teamed to a K04 turbine rotor. But now I understand it's the other way around.
Interesting design exercise, I have to say. What airflows are you running? Can you replace the EGT probe with a pressure sensor? It'd be instructive to see how the back-pressures are for a given airflow. As you know, we've seen pressures as high as 70psi in the "ChinaFold" when running exhaust from 280g/s airflow.
Granted, the back-pressures were partly owing to the unconventional 2.0L "FrankenStroker" design (which sucked), but it was enough impetus for us to re-think the turbine rotor for slightly increased flow.
as an aside the exducer on the k16 turbine measures larger than the gtx2867 I have here.. lol
I will see what I can do re back pressure testing.. MrsB for now has it back so I am leaving it alone.. so she can actually drive her car again after many many months..
yayyyyylooks like 28 frame turbos are a pointless exercise
GTX 2867 turbine rotor is 53.9/47
K16 rotors are typically 55/49, whether used in a diesel truck or in the TTRS.
Make sure to use a braided line as a stand-off from the exhaust housing, else you'll melt the MAP sensor.
yayyyyyYou are correct Doug, but this one is the 5015/5028 46mm exducer one. The 49mm one with the associated extra clearance I run wouldn't fit.. Leaves the edging too thin and almost breaks through to waste gate..
Still a k16..
You are correct Doug, but this one is the 5015/5028 46mm exducer one. The 49mm one with the associated extra clearance I run wouldn't fit.. Leaves the edging too thin and almost breaks through to waste gate..
Still a k16..
Well you probably know me well enough by now to reckon that I pooh-pooh a design that shifts power so far rightwards in the graph. But I'm glad to know you went with the smaller-exducer rotor variant. If I were to explore a K16-spec rotor, that's the one I'd choose as well. So now I'm surprised spool is so slow on the rotor you chose. Did you over-bore the turbine housing?
Well you probably know me well enough by now to reckon that I pooh-pooh a design that shifts power so far rightwards in the graph. But I'm glad to know you went with the smaller-exducer rotor variant. If I were to explore a K16-spec rotor, that's the one I'd choose as well. So now I'm surprised spool is so slow on the rotor you chose. Did you over-bore the turbine housing?
looks like 28 frame turbos are a pointless exercise
Really?
Small exhaust turbines with increased back pressure tend to surge like a $%*@$ at high boost.
Hence the need to reign then in with the EBC (N75 in this case) at lower RPM.
Thats why the Eliminator series of turbos never really took off, the turbine was just too small to flow like a real GT28.
In theory turbo's run most efficient just under the surge line threshold so its a compromise.
I do love the spirit of trying new combinations. The TFSI hybrids shuld be interesting!
400bhp.... lol..
get 372bhp and he wants more - lol
I have'nt fitted all the planned hardware tho...
GT28RS, 350bhp level turbo......
This is performing no less, and is k04 based so if the car was a k04 to start with, much of it is reusable.. oil,water lines, downpipe, 80mm TIP......
The exhaust turbine on this is'nt smaller discharge diameter than a GTX2867 I have here.. I measured.
the gt28rs has not only a smaller compressor but different turbine to a full size gt28 turbine?
Either way, these new hybrids are making gt2871/67 turbos in IWG forms prrrretty obselete
Bill, sorry if I missed it but is the turbo mounting with this manifold far off stock?
i.e. Will an existing ko4 down pipe mate up and a standard 80 mm Ko4 TIP or will it require custom bits.
Nope, I'm not. 352 is less than 353 where I did maths!