Member

Don't get mad because you are ignorant. I am not trying to bash on you. Just trying to let you know that you have the wrong information.

Member

Also I could care less about peak numbers. You completely failed to notice the flat horsepower and torque curve my car produces. This is what road racers and drifters shoot for with their tunes. So again try to research before you post.

Tom N

You keep telling yourself that. I didn't say the gtx should make exactly the same power as a 20g. He se why I don't have the garret turbo on this car. But they are comparable turbos is all I said. And they are.
A tdo5 20g and a tdo6sl2 20g are comparable turbos even though the sl2 20g will peak out a bit more. But not enough to say it's not in the same ball park. You think turbos that are within 20-30 hp of each other are not comparable? That's a joke. I've been building turbo car since you were a little kid I know what I'm talking about and see turbos are 100% comparable performance wise, one is not leaps above the other. I make more power on smaller turbos than most people for a reason. Bring me that car of yours and I'll show you what it can do on E85 with that little turbo.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

Tom N

Please show me one of my dyno graphs that's not flat. My dyno graphs are awesome.
My tq doesn't nose dive like yours either.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

Member

Haha. Whatever you say man. I'll bring you my car so you can blow it up just like yours. Go ahead and keep thinking they are comparable. I find it funny how misinformed you are but you think you have it all figured out. I'll leave you to your build man. Good luck with this one.

Member

And the torque from my Dyno dives off because of the smaller turbine side of my turbo. But you know everything so you already figured that out.

Tom N

Engine didn't blow up. If that matters.
I certainly don't know everything. But I inow these turbos are not worlds apart, and for the record I never said they were identical I said they were comparable performers and they 100% are, but I'm not sure why you are focused on that? My turbo has nothing to do with why you run so little timing on E85.
e85 needs a good amount of timing. Any good tuner knows this. and I guarantee you I can flatten that tq curve out more. You can blame it on the wheel size all you want but there's more to it than that.

Your car you tune it how ever makes you happy. But don't get upset if you put numbers out there and people, and not just me by the way, point out things to looks at as the number isn't empressive. If you weren't done tuning it or weren't looking to push it then that's fine. Just don't get so offended. But I'm telling you, you can make that same power with less boost if you dial it in better. But I'm done with this. I know what I can do and my numbers and track times have always spoke for themselves.
Have a good night and I do wish your build the best.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

TheRealSy90

Tom, i've had multiple tuners tell me that I will not be able to make 400whp or more with being limited to 91 pump gas. But you're making a lot more than that on pump gas? They're saying i'm going to max out around 350-380whp with a td0620g on 91 even if I do water methanol injection.

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Tom N

Most tuners will down play what they can make so if get are any good and make a little more than they said could be done they look like heros. If they tell you what it could really do and they can't get there than hey look like shit.
Your build will also determine how far you can push a turbo. I make more than most on small turbos cause I don't follow the typical cookie cutter build so many tend to. And there's nothing wrong with following a known path you know works it's just not typically the way you will make the most power.

The 20g is not a very big turbo like some want to believe. And around 400hp is typical on one.
What is your full build?

Edit I have mentioned this before but I am running meth injection with pump gas just want to make sure you know that.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

TheRealSy90

Ah okay that makes sense.

I was going to install the kit on my stock other than cams redtop and maybe do a head gasket and studs and just run it like that until it gives up at whatever a safe power level would be with 91 and probably pick up an AEM water meth kit later on.

And then i've got a spare built long block, CP 86.5/Eagle rods, ARP head studs & rod bolts, and GTIR main bolts, Cosworth 1.5mm headgasket, ACL bearings, ported and valve worked head with the full brian crower catalog except i'll be selling the 272 cams and swapping in my JWT S4's.

Also planning on running a bosch 044 fuel surge tank, with the current walbro 255 feeding the surge tank, stock fuel lines and rail. Currently Sard 550cc injectors on the stock engine, and I have new Sard 850cc injectors for the built engine since it should handle more boost if I can run more with the 91 & water/meth.

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jr_ss

You'll def need to swap out your injectors if you plan on maxing out your setup as is. 400whp is minimum 750cc territory. Water meth is a great option if you don't plan on running race/E85 all the time. I may switch to a meth injection kit to take full advantage of my setup. I'd love to see what 25-28 psi does on the VET. Should be a 600whp recipe.

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My SR20VET

TheRealSy90

I've got some brand new Sard 850cc injectors if I need them. I'm guessing the aem water meth kit is the way to go?

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TheRealSy90

I've got some brand new Sard 850cc injectors if I need them. I'm guessing the aem water meth kit is the way to go?

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Tom N

It's an ok kit. I prefer www.alkycontrol.com
You can make 600hp with 850 injectors and meth injection.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

ProjectSQ

Hey OP! so how's this turbo treating you? I've been saved my up for a new set up on my s13 sr and have put serious consideration into a 20g set up. From your experience what would you recommend from what you learned. I was hoping to run just pump gas, no meth, internal gate.

Tom N

I don't wasted my time on pump gas. Alcohol injection is to simple of a way to utilize a turbo.
Internal gate is ok but external is always the way to go on a turbo that can make 400+hp.
I love the 20g. This car runs 11.2 @ 125 on 19-20psi on the 20g

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

ProjectSQ

850 injectors z32 maf? What ecu? Sorry for all the questions. Not trying to jack your set up just want to get a good idea of where I should invest my money

Tom N

Never a reason to apologize to me for asking questions. There was I time many moons ago I had lots of questions.

The car is currently on a factory S15 ecu tuned via rom tune software.
It has a z32 maf and 750cc injectors with www.alkycontrol.com progressive alcohol injection kit. If you want a complete mod list of the set up that made the previous number I can give it to you.

There's a new motor going in the car soon. 11:1 bottom end with built up head.
This new set up will hit 500hp on the 20g.

Once e car hits 500hp on a factory style T2 framed bottom mount turbo on the stock ecu, a Haltech will be going into it.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

ProjectSQ

Thanks for the input man. This seems like great turbo, definitely thinking to do it right the first time and go with the anti-surge and billet wheel. What's the story with the manifold. I've noticed a lot of people sticking with stock, is that primarily to avoid cracking?

Tom N

Well for me it was for two reasons. First was I had a goal I wanted to hit while using a stock intake/exhaust/ecu. Second is for durability on a daily driven car.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

Barabas

Just be curious.Thank you for your sharing.

TheRealSy90

Tom, do you think a Greddy TD06H 20G 8cm will fit on the stock manifold?
I'm thinking of ditching the T3 manifold setup I've got, getting a T2/5bolt turbine housing for my greddy turbo from Kinugawa, hopefully it fits the turbine wheel, and installing it on a stock sr20 cast manifold with a Tial MVs 38mm gate welded on it.
I don't have a downpipe for my t3 top mount manifold, nor a way to build one. So I'd rather just stuff it on the stock manifold, weld the wastegate flap shut and buy a PBM cobra downpipe for it.
My concern is the compressor housing hitting the engine block or something like that, I know the EFR T2 turbos have this issue?

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Tom N

I have a td06sl2 20g in a 8cm T2 bolt on housing. Using a factory exhaust manifold. It does not hit the block in any way.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

TheRealSy90

Good to hear, you running an external gate on the stock manifold?

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Tom N

Yes. PTE 39mm gate.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

TheRealSy90

Does your 20g run water lines? My Greddy 20g doesn't have provisions for any water cooling. Think this would be a concern running it bottom mount close to the engine? I just tell myself i'll let it idle for a bit whenever I've run it hard. The old t3 internal gate 20g I had didn't have them either.


Sorry for rambling just trying to pass time at work haha.

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David48

No update on the power it made a month or two ago?

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Tom N

I do not use the water lines.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

Tom N

431hp at 15psi

Attached Images

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

Tom N

520hp @ 22psi
Ran out of fuel had to stop there.

Attached Images

image.jpeg (279.4 KB, 20 views)

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98