Need some advice on "Godspeed" turbochargers and GT2554R equivalents. - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 12-31-2013, 03:47 PM   #41
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That 193hp dyno chart is completely useless. $25 kinda sorta wasted, although my first experience on a dyno tonight.

They've been known to have a fairly inaccurate dyno readings, although it shows spool well enough. With out any sensation of a loss of power and no changes in setup, the next dyno read 165, and we upped it to 185.

Here's the updated one, spooled a little better I think.

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Need some advice on "Godspeed" turbochargers and GT2554R equivalents.-256ae3592437eb42bec1edd5a713618c_zpsadd6c786.jpg  
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Old 01-02-2014, 11:26 AM   #42
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That plot looks on par to the t3 super 60 I was running. That's the thing I don't like about that turbo on the 1.6L--I really don't like how such a small turbo performs so poorly.

I only say poorly because it produces about the same output as a turbo that can support over 300rwhp.

Here was the last dyno I took with that turbo. I think that's at 13psi and 15psi:



at 10-11psi, it would almost look exactly like yours above.


I think something that would really help your setup out is putting an auto intake cam on it. I bet that would more your spool back 300-500RPM and give a huge bump in the mid range TQ (around 5K).

The only turbo car I've seen dynoed with it had a greddy kit, and it was the best looking dyno plot I've ever seen with the greddy turbo and his setup was really ghetto otherwise.

it's the blue plot here:



I'd expect a curve more like this if you found that cam; it was something I always wanted to do. Our cams is what really hurts our low-end performance. While most don't care about it, mine was setup as a street car and it really suffered from it, even though I could make 240tq at 4K or whatever it was. I got incredibly spoiled by driving well setup 1.8Ls and I was willing to sacrifice top-end for the low-end off the line performance
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Old 02-24-2017, 12:18 PM   #43
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Quote:
Originally Posted by Cody Strife View Post
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...
So did you or anyone on this thread attempt to use the t3 50 trim with the Voodoo box with good results?
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Old 02-24-2017, 12:19 PM   #44
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You can make stupid choices with crappy parts all you want, but if you bump another 4 year old thread I'm gonna have to make a choice for you.

*edit:


Last edited by 18psi; 02-24-2017 at 12:47 PM.
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Old 02-24-2017, 12:45 PM   #45
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Quote:
Originally Posted by 18psi View Post
You can make stupid choices with crappy parts all you want, but if you bump another 4 year old thread I'm gonna have to make a choice for you.
Now, Vlad. Try to be sweet.

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Old 02-24-2017, 12:47 PM   #46
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My bad, edited.
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