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-   DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)
-   -   Turbo too small? (https://www.miataturbo.net/diy-turbo-discussion-14/turbo-too-small-88588/)

Aldo 04-15-2016 12:44 PM

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.

thirdgen 04-15-2016 12:50 PM

Don't do it. Bad idea for many reasons.

acedeuce802 04-15-2016 12:50 PM

This turbo was well matched to our 0.45L FSAE car.

Downmented 04-15-2016 12:51 PM

Use it as a cup holder or something and get yourself a cheap SR20 turbo for cheap.

Joe Perez 04-15-2016 12:59 PM

Can you get another one just like it?

deezums 04-15-2016 01:05 PM

I like the way Joe thinks....

Aldo 04-15-2016 01:15 PM

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

deezums 04-15-2016 01:20 PM

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...

Braineack 04-15-2016 01:32 PM


Originally Posted by Aldo (Post 1323948)
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 shit 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.

acedeuce802 04-15-2016 01:54 PM

Just do a GT2554r

18psi 04-15-2016 02:05 PM

whats the point in turbocharging if only for 150hp

Girz0r 04-15-2016 02:16 PM


Originally Posted by 18psi (Post 1323975)
whats the point in turbocharging if only for 150hp

This..

http://static.comicvine.com/uploads/...5032-post-.jpg

codrus 04-15-2016 02:18 PM


Originally Posted by 18psi (Post 1323975)
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

Aldo 04-15-2016 02:57 PM


Originally Posted by 18psi (Post 1323975)
whats the point in turbocharging if only for 150hp

Having the biggest balls 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.


Originally Posted by codrus (Post 1323981)
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

18psi 04-15-2016 03:13 PM

this isn't about balls. 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

Joe Perez 04-15-2016 03:17 PM


Originally Posted by Aldo (Post 1323990)
Having the biggest balls 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.

bahurd 04-15-2016 04:56 PM

2 Attachment(s)
https://www.miataturbo.net/attachmen...ine=1460753770

You knew it was bound to happen.

ryansmoneypit 04-15-2016 06:11 PM

I was happy with 10 psi. For a week.

90civichhb 04-15-2016 06:24 PM

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.

codrus 04-15-2016 07:15 PM

I was happy at 24 psi... for a week. Now I want 30. :)

--Ian


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