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Old 04-15-2016, 01:44 PM   #1
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Default Turbo too small?

So I came across a Garrett GT1446 from a 1.4L dodge dart. I have a NA6 which I'm considering going turbo. With this set up, I'm assuming i'll hit full boost at very low RPMs but would it chock the exhaust at high RPMs due too the turbo's small size? I would like to get your guy's opinion on this set up.
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Old 04-15-2016, 01:50 PM   #2
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Don't do it. Bad idea for many reasons.
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Old 04-15-2016, 01:50 PM   #3
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This turbo was well matched to our 0.45L FSAE car.
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Old 04-15-2016, 01:51 PM   #4
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Use it as a cup holder or something and get yourself a cheap SR20 turbo for cheap.
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Old 04-15-2016, 01:59 PM   #5
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Can you get another one just like it?
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Old 04-15-2016, 02:05 PM   #6
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I like the way Joe thinks....
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Old 04-15-2016, 02:15 PM   #7
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What would be the smallest turbo you would put on a 1.6L?.. I'm not looking for peak hp, 150-160hp would be ideal
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Old 04-15-2016, 02:20 PM   #8
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If you can make a manifold I'd get a K03 from a VW or Mini. Still something I want to do, will be crazy peaky for awesome spool but will choke flow to around 160-180 on top. They are crazy cheap, those guys like upgrading to k04s. Or there's the BMW twin turbo M car, get one of those turbos.

There's a few guys done it around the internet, not many here I've seen...
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Old 04-15-2016, 02:32 PM   #9
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Quote:
Originally Posted by Aldo View Post
What would be the smallest turbo you would put on a 1.6L?.. I'm not looking for peak hp, 150-160hp would be ideal
something in the GT2052 size range. it's going to spool fast, make a **** ton of tq at 3-4K, then choke off past 5K. your peak tq will be much higher than peak HP and it would be a very twitchy and unfun miata to drive anywhere but the highway.
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Old 04-15-2016, 02:54 PM   #10
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Just do a GT2554r
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Old 04-15-2016, 03:05 PM   #11
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whats the point in turbocharging if only for 150hp
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Old 04-15-2016, 03:16 PM   #12
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Quote:
Originally Posted by 18psi View Post
whats the point in turbocharging if only for 150hp
This..

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Old 04-15-2016, 03:18 PM   #13
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Quote:
Originally Posted by 18psi View Post
whats the point in turbocharging if only for 150hp
If you want a low-powered turbo Miata, you could always buy a stock MSM.

--Ian
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Old 04-15-2016, 03:57 PM   #14
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Quote:
Originally Posted by 18psi View Post
whats the point in turbocharging if only for 150hp
Having the biggest ***** in the room doesn't mean you'll have the most fun. I would honestly keep my drive train stock if it had just a tab bit more tq.

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If you want a low-powered turbo Miata, you could always buy a stock MSM.

--Ian
I have most of the items needed to turbo the NA6, I'm just missing the exhaust manifold (and apparently a different turbo).. it'll be much easier and cheaper to finish this project than to try to sell it and then look for a well maintained MSM
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Old 04-15-2016, 04:13 PM   #15
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this isn't about *****. this is about spending at least 2 grand to make 30hp

it sounds like you just need a 1.8 vvt swap and nothing else
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Old 04-15-2016, 04:17 PM   #16
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Quote:
Originally Posted by Aldo View Post
Having the biggest ***** in the room doesn't mean you'll have the most fun. I would honestly keep my drive train stock if it had just a tab bit more tq.
I suspect that most of us probably said that to ourselves at one time. I know that I did.

Boost is addictive. You start at 5 PSI. Then you upgrade the injectors and add an intercooler. Then you throw a decent MBC at it. Then water injection. Before you know it, you're peaking at 230 WHP and wishing you'd gone just a little larger on the turbo.
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Old 04-15-2016, 05:56 PM   #17
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You knew it was bound to happen.
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Old 04-15-2016, 07:11 PM   #18
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I was happy with 10 psi. For a week.
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Old 04-15-2016, 07:24 PM   #19
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I went up the boost tree like this.

Turbo in and street tuned...

"My car is only 1900lbs, this T25 on wastegate will be fine"

3 days later..

"I wonder if I can get a few more PSI if I preload my wastegate"

2 days later..

"Screw this, I'm getting an EBC"

Running 11psi through this 1.6L controlled by an EBC has been one of the best decisions I have made with the car. The little SR20 turbo spools pretty well considering the cost and availability of manifold/DP combos.
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Old 04-15-2016, 08:15 PM   #20
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I was happy at 24 psi... for a week. Now I want 30.

--Ian
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