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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 04-28-2007, 12:35 PM   #1
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Default Greddy kit at 250whp 94-95'...

Apparently the greddy kit is good for 250whp. Well, that's cool, but is it fairly easy to swap the turbo for perhaps an 18/20g turbo? Keeping it internal wastegate...?

I'm assuming all that I'll need for a reliable greddy kit at 250whp is the Greddy Piggyback unit, 740cc injectors, 190lph fuel pump, manual boost controller, upgraded downpipe (lower or upper?), and a straight pipe exhaust to tip (I can do this for cheap), probably a blow off valve ??, anything that I'm missing?

I'm in college. I want 250whp. Income is steady but low. I want a cheap setup that will get me there. More importantly, I want to be able to simply swap the 15g turbo out for something bigger with minimal extra modification necessary. Any ideas?

Patrick
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Old 04-28-2007, 12:44 PM   #2
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greddy only for 1.6 sorry.

89-93
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Old 04-28-2007, 12:51 PM   #3
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What piggyback unit are you talking about. There is no fuel management piggyback included. All it comes with is a FMU to increase fuel pressure. You don't need 740cc injectors those are more for 350 hp are are way over kill. You would want a upgraded upper downpipe whatever the hell upper means seeing how there is only one. Yes you'll want a blow off valve.
If you really just want to slap on a turbo kit then get the greddy kit, buy stripes IC kit on mx5projects.com. Get some ~305cc injectors and megasquirt and a blow off valve.

In short, build your own kit. People have been doing writeups on how to make your own kit forever on here and there is an FAQ to tell you everything you need to know. Everyone that has gone with the greddy kit has decided that they would have rather built their own, saved the money, and got the upgrades they wanted right off the bat.
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Old 04-28-2007, 01:26 PM   #4
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haha 750cc injectors would be good for 450BHP.
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Old 04-28-2007, 01:30 PM   #5
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with the greddy kit the supplied turbo is your only option there is no upgrading on that. with a t3 kit or maybe a ebay DSM megan racing kit many upgrades exist. there are alot more people running the Ebay kits for 1.6 now and the 16g is catching on. + if you go with an evo 3 hp levels of 300+ will be acheivable. 740 cc injectors what you want 425 chp or something? the only options to run something that big are MS, Link, hydra, tec, AEM, and maybe a emanage ultimate this isnt the DSM world we cant just throw on a safc and run 1000 cc injectors esp since our cars start life with puny 235's and 265's.
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Old 04-28-2007, 01:37 PM   #6
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The tdo4 is good for 275 +, and with quick spool with the right exhaust.

I have a greddy 1.6 car that was at 260 whp (dynojet) before going into a telephone pole.

Ben
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Old 04-28-2007, 01:41 PM   #7
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Quote:
Originally Posted by Ben View Post
The tdo4 is good for 275 +, and with quick spool with the right exhaust.

I have a greddy 1.6 car that was at 260 whp (dynojet) before going into a telephone pole.

Ben
did you hit that with the emu i am impressed i must have missed that post nice work.
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Old 04-28-2007, 01:46 PM   #8
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Since the Greddy is only for <94' model, I was asking you all what all is needed for a DIY kit. I've tried searching for "gt28" and "gt30" but no luck under the DIY forum. In short I'm asking you all what all is needed for this setup on a 94 MX-5. BTW does the 94' come turbocharged from factory?
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Old 04-28-2007, 01:51 PM   #9
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No, that is the other car I picked up already built and wrecked. The guy who built it in 2005 had it at 238 with stock exhaust and then 260 with 2.75" exhuast. Ran off a Link and RC 440 cc injectors.

The other car will be somewhere just over 200. Until I get a standalone, then it should be 250+

Ben


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did you hit that with the emu i am impressed i must have missed that post nice work.
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Old 04-28-2007, 01:52 PM   #10
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no the only factory turbo miata is the MSM from 2005 i believe maybe 2004 as well. to set up a 94 ask nester to make you a copy of his manifold set to run a 16g and then get the fueling and cooling sorted. look to Andy floyd, Nester, Markp, cejernigan, rican miata, fmory and others there threads can give you alot of insight rican miata recently put together a whole kit almost and then had to sell it for personal reasons. There threads should break it down, then you just need to pic your flavor. Search by user name for threads started by those people and you will be abit closer.
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Old 04-28-2007, 02:07 PM   #11
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ETD racing, about halfway down the page, a greddy manifold for you 1.8 coming soon, so the greddy kit doesn't have to stay with a 1.6 anymore
http://etdracing.com/manifolds.html

besides you're getting a manifold that's probably better than the greddy supplied one anyway, great for guys with a pretty much finished greddy kit thinking of swapping up to a 1.8
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Old 04-28-2007, 02:09 PM   #12
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Quote:
Originally Posted by wrxrick View Post
Apparently the greddy kit is good for 250whp. Well, that's cool, but is it fairly easy to swap the turbo for perhaps an 18/20g turbo? Keeping it internal wastegate...?

I'm assuming all that I'll need for a reliable greddy kit at 250whp is the Greddy Piggyback unit, 740cc injectors, 190lph fuel pump, manual boost controller, upgraded downpipe (lower or upper?), and a straight pipe exhaust to tip (I can do this for cheap), probably a blow off valve ??, anything that I'm missing?

I'm in college. I want 250whp. Income is steady but low. I want a cheap setup that will get me there. More importantly, I want to be able to simply swap the 15g turbo out for something bigger with minimal extra modification necessary. Any ideas?

Patrick

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Old 04-28-2007, 02:11 PM   #13
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I'm a student, I'm on a very small budget, have you driven a 250 rwhp miata?

Check out my DIY...I'll have about 2k or so minus clutch and rear end. But I'm using a small gt2554r...you'd have to get something a bit bigger. I'm going for 200-220rwhp
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Old 04-28-2007, 02:25 PM   #14
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Rick, please tell me you read through all the sticky's at the top of the DIY page. Pretty much everything you'd want to know about the process of DIY turbo'ing a Miata is covered there. 250rwhp is approaching the limit of the stock internals without sacrificing longevity too much. Being a college kid, you'd probably want to start with less power and higher reliability. For example, you could start with a nice little T25 setup good for 200rwhp, and then upgrade to a big T28 and take you well over 250rwhp. Don't forget that there's more to this car than just making power. How about tires/wheels/brakes/safety/clutch/suspension...???

Do us a favor and fill out the rest of your profile so the locals around you can offer their advice and offer to show you their cars. Then fill out your signature with the mods you currently have. Do you already have a Miata or are just doing homework? What are your goals with this car? Are you going to autocross/drag/drift/DD/weekends/etc...? How much money total do you have to spend? What kind of facilities do you have to do this work? Tools/skillz/welding/friends/experience? Do you have any previous experience working on turbo'd cars? Have you ever driven a turbo Miata?

Welcome!
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Old 04-28-2007, 08:40 PM   #15
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aim me Pitlab77

I'm in houston and use to have a 200 something rwhp miata
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Old 04-28-2007, 09:25 PM   #16
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for real rick take a ride in a boosted miata to see how bad you realy need to be a 12 sec miata is nice but they get expensive past that. Also you will need alot of rubber going on there 185-205 need not apply. Go for some 225's at least
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Old 05-01-2007, 02:31 PM   #17
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Quote:
Originally Posted by magnamx-5 View Post
no the only factory turbo miata is the MSM from 2005 i believe maybe 2004 as well.
There was a NA 1.6 set produced for the UK market. That was mazda approved with no void of warrenty...BBR turbo... Not exactly made by mazda, but the only one warrantied by mazda...

http://www.cryton.demon.co.uk/mx5/p-bbr.html
http://www.mazda-mx5-bbr-turbo.co.uk/
http://www.mx5-mazda.co.uk/24hrLeMans.htm(origional colour,rare miata, only 24 made)
http://www.mx5-mazda.co.uk/BBR%20Tur...%20edition.htm
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Old 05-01-2007, 02:55 PM   #18
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Quote:
Originally Posted by greddymx5 View Post
There was a NA 1.6 set produced for the UK market. That was mazda approved with no void of warrenty...BBR turbo... Not exactly made by mazda, but the only one warrantied by mazda...

http://www.cryton.demon.co.uk/mx5/p-bbr.html
http://www.mazda-mx5-bbr-turbo.co.uk/
http://www.mx5-mazda.co.uk/24hrLeMans.htm(origional colour,rare miata, only 24 made)
http://www.mx5-mazda.co.uk/BBR%20Tur...%20edition.htm
It was aftermarket as not installed by mazda.

I would count the Aus. SP as the first really "mazda" turbo charged miata

http://www.drive.com.au/Editorial/Ar...rticleID=19255
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Old 05-01-2007, 04:40 PM   #19
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Its like I've read the answers to these same posted questions before somewhere.... oh wait.. in the sticky!
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