May want to be more specific as to the info you're looking for

 

http://www.dodge-dart.org/forum/dod...dodge-dart-gallery/348-pictures-you-will-not-find-anywhere-else-3.html#post5167

I did a search because I remember us talking about it a while back....here's what I got. Start here with the pictures and then read the following posts. That's all the info we have at this time. But I'm sure we can be more specific, although, this might help a little...

 

All I seen about the stock turbo online is this: Stock RPM. 210,000 RPM yes 210,000 but capable of 230,000 RPM. boost 18-22psi Made by Garret ( not 100% sure though on builder). Todd when I find the link I will post

the U.S., the compression ratio is 9.8:1; the engine can run on regular but premium is preferred. The engine takes four quarts of oil, synthetic 5W-40 recommended, with oil change intervals are set at 8,000 miles. Coil-on-plug ignition fires dual-tip spark plugs. Fuel injectors spray at the intake valves. The turbocharger spins up to 230,000 rpm [verified by engineer David M. Schmidt], forcing extra air into the cylinders; it normally runs at 210,000 rpm. The system uses two charge air coolers (commonly referred to as intercoolers) behind the driver- and passenger-side air inlets; these reduce the heat of the high-pressure air, allowing for higher air density and reducing the potential for engine knock. Observers say boost peaks at a whopping 18 psi, far higher than past Chrysler limits.

P.s. link from dart-mouth.com

 

The system uses two charge air coolers (commonly referred to as intercoolers) behind the driver- and passenger-side air inlets; these reduce the heat of the high-pressure air, allowing for higher air density and reducing the potential for engine knock.

The Abarth uses this system. The Dart has a single FMIC.

 

I'd like to know as much as possible about it so I will know what to do with the stock turbo....if I could make new turbines and keep the housing or should I just start fresh with a new turbo.

A/R of the housing,
Size of housing,
Diameters of the inducer/exducer
trim.
Etc,.

Whatever will help.

 

048 AR on the exhaust housing
Inducer on the compressor wheel 34 ish mm
Inducer on the turbine wheel 33 ish mm
Trim is going to be very specific but based on the math, it appears to be a 42trim compressor wheel
Turbine wheel is unlike anything we have ever seen, super heavy lay over on the blade tip so don't know what trim to give it.

Journal bearing, both water and oil feed, tiny compressor housing and the compressor to turbine wheel ratio is close as I have ever seen 1 to 1.

Upgrade's should be posted soon in our section here on the forums.

Thanks,

John

 

From the picture it looks like its a Garrett M12 Turbo..... I dont know much about them.... i couldnt find it on Garetts website....

 

I saw the M12 on the housing but that is not the model number. It should start with GT. Here is the website if this helps anyone.

Garrett Nomenclature | Turbobygarrett

 

Ran the google search "Garrett Turbo Fiat 500 Abarth" and have a number of websites stating that it's running a Garrett GT 1446 turbo, but when I look through the products on the Garrett site I don't see that particular turbo listed. Will keep looking...

Quoted from the Fiat 500 USA forum: The US Abarth has the Garrett GT1446 turbo which is on the Ferrari Tributo, Assetto Corse, and R3T.

 

Definitely some good info here.

 

Glad to hear that a vendor is already working on turbo upgrades. Will be interesting to probe the limits of the 1.4

 

My man! I will be getting up with you soon! Where are you located?

 

I found the page on Garrett's website for the turbo used on the Dart:

Product Search « Garrett By Honeywell

It's a Garrett Model GT1446GLSZ. Chrysler P/N is 04892938AD.

 

Actually the turbo holds at 22 psi. Impressive!

 

It's a Garrett 1446.

 

Here's some pics of the GARRETT (model #: GT1446GLSZ; part #: 810944-5004/5 S; OEM part #: 04892938AC/D) turbocharger used on 2013 Dodge Darts with the 1.4L MutltiAir engine:

all images by DL500​

 

Thank you for the pictures. Now if I just had a diagram of the engine showing airflow direction.

 

mine says its a .46 a/r is anyone else different? I thought the post before this said it was a .48

 

I was just looking around at mine the other day and I think mine was .48 a/r, I can't remember for sure. I can take a look tomorrow.

 

my turbo

here is whats in mine

 

here is whats in mine

hey that's not an exhaust housing.... really the intake a/r is pretty irrelevant. torkme was quoting the exhaust a/r which is an indicator of how fast it spools. you really just look at a pressure map of an intake when choosing a turbo but the exhaust you tune with different a/r housings. it's area/radius. the radius doesn't change much if the turbine is the same so that ratio is an indicator of area and nozzle and exhaust velocity.

if torkme is right about the inducer diameter being 34mm (seems he is..) the power potential might already be reached with a tuning box.. but acording to this document the exhaust a/r is .67... i also found a pressure map and it seems before it loses significant efficiency or risks exploding the turbo (after a conversion) can push just about 20lb/min air which i figure 1lb/min equates to roughly 10hp on a street car but may be 12 to no more than 13 if everything is tuned. looks like to get 250hp you have to have your stuff perfect and most people will be at the 200hp mark..

 

Does anyone know how much boost darts are putting out stock?

 

22psi but it drops before redline unless the air gets really hot, that's about 2.5:1 pressure ratio if you want to see what that looks like on the pressure map which i linked to above (gt1446)

 

21-22 psi.

 

Anyone know how much psi the turbo can take? I have herd of some tuners putting it around 27 psi.

 

https://www.abarth-forum.de/modelle...nde-punto-abarth-punto-evo-abarth/technik-gpa-ape/abarth-mit-td04-lader-t10397/

 

Sooo i want to turbo my sxt 13 dart non turbo.... any tips and what turbo to get???