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Old 12-24-2013, 01:06 AM   #1
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Default Need some advice on "Godspeed" turbochargers and GT2554R equivalents.

I never thought I would embrace the day when I would actually consider experimenting with chinese made crap, but I can't deny the fact that I have seen folks have pretty decent reliability out of some of this stuff, and considering I just picked up a 1993 Miata, I am ready to experiment some.

It's been years since I last got on here, but I alot of experience with the turbocharged miatas and I am always constantly trying new things. From retrofitting two NB's with MSM turbo setups, which was so much better than my factory MSM's with its bogtastic ECU, to my 2002 Corvette with PRC stage 2.5 heads and 228r cam.

Okay, enough chatter, here is the deal.

I am wanting to purchase one of these ebay cast iron 1.6 liter manifolds, cause I read nothing but good reviews of them. They are T3 outlets. I want to purchase a reliable chinacharger/Godspeed that has the spool-up properties of a Garrett GT2554R. I will be fabbing my own downpipe and charge-pipe tubing and I will be using air-to-water intercooler and heat exchanger.

(yes I know, I know what your gonna say, heatsoak this heatsoak that, but considering I ran the system on my 2001 Honda S2000 with 14 lbs of boost and no street never had issues with high IAT's, then I really like the setup for its simplicity of plumbing. So, i'm interested in going down that road of debate.)

My goal is 7-8psi, nothing more. 160 rwhp is all I am shooting for

Voodoo box and 4 degrees timing retard, it works well for the majority of folks aiming in the 6-9 psi range.

So, with that out of the way, and the fact that I have searched for similar results, I just need some clarification. I'm not turbo-whiz and I don't know what is what in regards to spool-up properties. So, if Brainiack is out there, help me out man

T3 Internal Wastegate Turbo Charger .48AR

This is the turbo I am about to buy, T3 internal wastegate, .48AR, the smallest they seem to have in this family of turbos.

89 93 Mazda Miata 1 6L B6 T3 Flange Cast Iron T3 T4 Turbo Exhaust Manifold | eBay

This is the turbo manifold I am considering...
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Old 12-24-2013, 01:46 AM   #2
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Here, let me help you.

https://www.miataturbo.net/useful-sa...asquirt-13676/

Don't be stupid.
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Old 12-24-2013, 01:48 AM   #3
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all these years, and all these cars and you're still worse than some of these n00bs we make fun of

how sad is that
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Old 12-24-2013, 02:22 AM   #4
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I'm disappointed in your plans. 7-8 psi?! WTFlame

Gain churbro.
Run allofit.
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Old 12-24-2013, 03:48 AM   #5
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Here, let me help you.

https://www.miataturbo.net/useful-sa...asquirt-13676/

Don't be stupid.
Nah I prefer to keep my engine diagnostics, reliability, air-condition control, and be able to start the car up smoothly and efficiently regardless if its 20 degrees outside.

I had my mega squirt PNP days back when I had the 97 Miata and BEGI S3 series. I'm not knocking them necessary, but I'm not versed in tuning stand-alones, it ran good with 14 psi of boost and 460cc injectors, but I never could get my car to idle and start like it would with factory injectors and ecu.
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Old 12-24-2013, 03:50 AM   #6
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all these years, and all these cars and you're still worse than some of these n00bs we make fun of

how sad is that
How so, by wanting to find a cheap *** chinese turbocharger that has power characteristics of a t2554?

Is that just too much to ask for?
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Old 12-24-2013, 04:04 AM   #7
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No, just because you're not smart enough to figure out how to get a proper EMS to work you resort to using fail aids.

The churbo and taco log will get you to 160whp no problem. (although I've yet to meet anyone that's actually happy with a measly 160whp, that's like Toyota Camry territory)
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Old 12-24-2013, 04:21 AM   #8
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Well, considering my 02' Corvette dynoed 450 rwhp and 444 ft-lbs of torque, I got a fast car already that runs low 11's in the 1/4 and traps speeds of around 125 mph in the 1/4. Really can't enjoy that power on the street anyways without getting your license revoked so she sits in the garage on street tires most of the time.

160-200 rwhp is perfect for a street driven Miata. Voodoo Box worked just fine for me, as it has for hundreds of happy folks out there. As stated previously, not everyone cares to do away with their factory ecu. I am one of those guys. I don't need a 260 horsepower Miata; I have had those already...
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Old 12-24-2013, 04:27 AM   #9
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So has anyone experimented with these Godspeed "torbochargers"? If they are pure D junk that will send impeller chunks reigning down into the intercooler after a few miles, then I prefer to just pick up a used Garrett turbo, or maybe even fab an exhaust manifold to use an IHI VJ35. (That was a sweet little turbo)

Just want something with power characteristics of a T2554, this car has 98,000 miles on it so I don't care to send it to an early grave by boosting the hell out of it. 7-8 psi is all I care for.
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Old 12-24-2013, 04:29 AM   #10
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I'm hesitant about china chargers, but bell engineering has had some fair reliability out of them, so what the heck I figure why not give it a try?
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Old 12-24-2013, 04:31 AM   #11
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I ran a godspeed turbocharger. It worked. It still works, new owner is enjoying it. Why the fascination with godspeed? There are other chinachargers that work just as well.

And I don't care about your other cars. We all have powerful cars (and I a corvette as well) no one cares about that.

Around here we care about properly done turbo miata's, and a doo doo box isn't a proper setup, and hundreds here are NOT enjoying this setup. Maybe you're thinking of m.net or something. Its funny you say 160-200 now, when just a couple posts up you said 160. Also your doo doo box won't hit 200 with this setup.

Anyways, this is falling on deaf ears, so I'll stop. Good luck with your 1.6
I'm just sad that you're not a n00b but thinking and reasoning like a complete and utter n00b.
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Old 12-24-2013, 04:45 AM   #12
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No such fascination with God-speed in particular, I assume they probably all come from the same chinese plant anyways.

Your arguing with the merits of my engine management, when in fact, the main idea of my first post was to find a reliable "china-charger" comparable to a t2554r. Go back and see for yourself dude, because I am not going back and forth with you anymore, so I'll save the last word for you if you want it.

And thank you for your input.
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Old 12-24-2013, 05:02 AM   #13
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Okay so with that out of the way...

I was looking at a Godspeed T3 .48ar internally wastegated china charger. Quick spooling for a 93 1.6 engine? I'm not going all out, just keeping it simple.

I am really just looking for a turbocharger with comparable performance to a T2554R.
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Old 12-24-2013, 09:49 AM   #14
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So get a sr20 t25. Why t3?
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Old 12-24-2013, 09:55 AM   #15
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So get a sr20 t25. Why t3?
I wouldn't even get an SR20 T25. The large *** turbine A/R is not beneficial for a 1.6L. Hell they don't even spool that fast on on a 1.8L, but they do make gobs of torque on a 1.8L, where they don't really make any low-end ona 1.6L because they can't spool enough.

It wouldn't spool any better than the 45 trim T3 (possibly worse from what I've seen) or perform any better than it in this case. So if the choice was a SR20 T25 .86 A/R or a 45 trim T3 .48 A/R, I'd choose the T3 every day. It'll spool faster, make more low/mid-range TQ, and have a similar top end.

Problem is it's still not entirely quick spooling. It wasn't horrible by any stretch, but it wasn't spooling as fast as I would have liked.

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DIYPNP
Quote:
Nah I prefer to keep my engine diagnostics, reliability, air-condition control, and be able to start the car up smoothly and efficiently regardless if its 20 degrees outside.
Lol, so get a DIYPNP. Welcome to > 2007.

There's also no way in hell I'd run a voodoo box, even on a low boost setup. At least run a DIYPNP and just some RX8 injectors.



The Gospeed T3 appears to be the same turbo I had, but I paid half. Look on ebay for it under no "Brand" name, who pays for a brand name like gospeed?
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Old 12-24-2013, 10:27 AM   #16
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I'd also never run a voodoo box again, ever. I ran my ms2 for years with stock injectors and 7 psi with absolutely no issues.
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Old 12-24-2013, 03:41 PM   #17
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Originally Posted by Braineack View Post
I wouldn't even get an SR20 T25. The large *** turbine A/R is not beneficial for a 1.6L. Hell they don't even spool that fast on on a 1.8L, but they do make gobs of torque on a 1.8L, where they don't really make any low-end ona 1.6L because they can't spool enough.

It wouldn't spool any better than the 45 trim T3 (possibly worse from what I've seen) or perform any better than it in this case. So if the choice was a SR20 T25 .86 A/R or a 45 trim T3 .48 A/R, I'd choose the T3 every day. It'll spool faster, make more low/mid-range TQ, and have a similar top end.

Problem is it's still not entirely quick spooling. It wasn't horrible by any stretch, but it wasn't spooling as fast as I would have liked.
Hmm...

I kinda wonder why the chinese stuck with a t3 flange on a cast iron turbo manifold designed for a 1.6 liter engine. Especially since I am getting the idea that even the smallest T3 turbo is still too large for the 1.6 liter engine.

But anyways, the 45 trim T3 .48 A/R is the smallest T3 turbo I assume I can get on ebay, right?

This makes me just reconsider the whole thing, I should probably just hold off, pick up a BEGI 1.6 turbo manifold and wait for a GT2554R to come around...

When I had my 2004 MSM Miata with little enchilada setup, I really got spoiled with it. It would hit 9 psi at 2800 rpms and hold it to 6500 rpms. So being the fact you would never really lug a miata that low in spirited driving, the spool up around 4000 is instant.








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Old 12-24-2013, 03:43 PM   #18
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Actually the MSM ihi is a slow spooling turbo for how small it is. A 2554 will be much quicker.

I think your 2nd idea of getting a quality setup is a much better one. Add proper EMS and injectors and just enjoy a quality setup
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Old 12-24-2013, 03:47 PM   #19
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I kinda wonder why the chinese stuck with a t3 flange on a cast iron turbo manifold designed for a 1.6 liter engine. Especially since I am getting the idea that even the smallest T3 turbo is still too large for the 1.6 liter engine.
It actually performs quite well on teh 1.6L it's not oversized at all.

The compressor output is similar to that of a 2554, but the T3 turbine provides more flow up top, so you can still make plenty of top-end with it (crapping out around 250).

I've driven too many 1.8L setups so I got spoiled, but that T3 was running very well on my 1.6L, better than more other turbo setups in regards to the spool/tq. I was making ~240rwtq at ~4100RPM.

The .86 turbine of the SR20 T25, while a smaller turbo, kills the spool. It already doesn't spool that fast on a 1.8L. If you could find a T25 like an SR20 one that doesn't have such a large turbine A/R, it would be a better match for a low boost setup however.
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Old 12-24-2013, 04:07 PM   #20
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.86 turbine? I've never seen a sr20 turbo with bigger than .64. The only sr20 size difference I've seen was compressor size.
Scott, that 240whp @ 4100rpm was on a 1.6 with a t3 super 60, am I correct?
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