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Turbo recommendations and expectations


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#1 AlrightyThen

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Posted 21 February 2018 - 10:15 AM

Hi Guys, I want to get some input from the OGs here about what turbo to use. The stock one I have needs a rebuild so I thought might as well use this opportunity to upgrade if there is something better.

For some context, once this car is 'done' it will be used mostly for track days with the occasional weekend cruise. So, I want a meaty power band but it can be skewed a bit to the higher rpm. Obviously I want the most power possible, but I don't want something peaky that makes a ton of power just at the top of the rpm range.

Would appreciate any advice from the people who have done it before.





#2 tux

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Posted 21 February 2018 - 11:04 AM

GT35r or Holset HX35 - you'll need to modify a bit

#3 psu_Crash

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Posted 21 February 2018 - 01:07 PM

What do you plan to due for fuel management?
Staying TBI or going multi port?
I love the HX-35/40 hybrid i ran and it puts down plenty of power. But, like Tux said you need a good bit of other mods to properly support something that large.

With the stock system, a 16G with a little porting is a very nice setup.
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#4 fang988

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Posted 21 February 2018 - 01:49 PM

What supporting mods a necessary for the HX-35? I would one day like get one. Also, how much should a quality HX-35 cost today? I have seen some range from $150 to $600.

#5 tux

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Posted 21 February 2018 - 02:11 PM

I'd say at minimum, you'd need an Auxiliary Fuel Controller and additional injectors.  New exhaust manifold and downpipe.

Better route would be larger injector's and a megasquit, new exhaust manifold and downpipe

Even better would be new exhaust manifold, downpipe, MPI setup, lots of time, and money

#6 AlrightyThen

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Posted 21 February 2018 - 02:38 PM

I plan on doing an mpi conversion, but realistically I with probaby stay tbi for a while and add larger fuel system. Are the GT35r and HX35 pretty similar? The holset is a diesel turbo right?  With either these turbos and proper fuel/ supporting mods what kind of power and torque curve should I expect?

#7 tux

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Posted 21 February 2018 - 10:21 PM

GT35R
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HX35
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Hopefully that helps

#8 Fuze

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Posted 22 February 2018 - 10:24 AM

Sounds like you're going to stay TBI for a while and switching to another type of turbo is a spendy process. To run a Holset or other Garrett based turbo you'll need another exhaust manifold or an adapter to match the flange, plumbing oil lines, a custom downpipe, fuel controller like a Super AFC of MAF-T, maybe larger injectors, full exhaust, and some tuning.

If you want to have fun with the stock TBI setup, go with a Mitsu Super16G and port the exhaust manifold and turbine housing. Go with a  TD05-H or TD06 exhaust wheel if you want more high RPM punch. If your track days consist of more corners than high speed straights, the more responsive smaller turbo will make the car more fun. A bigger turbo with more lag is not as fun to drive when you're on and off the gas constantly, they're good for highway blasts and top end though, with the possible exception of a ball bearing GT35 or similar.

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#9 AlrightyThen

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Posted 22 February 2018 - 01:02 PM

Fuze that sounds interesting. Yes the track I go to (Hallett in Jenkings OK) is smaller and more technical, not a big high speed course. Is the Super16G something still produced today, or do I need to find a used one? Thanks

#10 tux

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Posted 22 February 2018 - 03:32 PM

Can't find any new.

You can machine your hotside and get a CHRA and compressor housing from a Super16g

They aren't terribly cheap though.  550$ or so for the CHRA and compressor housing from fleabay

#11 Hoosierquest

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Posted 22 February 2018 - 04:49 PM

I'm pretty sure the turbo labs of America guys Have did the td06 conversion for a fellow quester before. Might give them a call.
I have the td06sl2 turbine bit have yet to install it.

http://turbolabofamerica.com
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#12 AlrightyThen

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Posted 22 February 2018 - 06:20 PM

Does a 16g bolt to stock manifold and dp? There are some on sale on Amazon but they say bolt on for 4g63 eclipses and talons.

#13 BC_99

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Posted 22 February 2018 - 07:34 PM

Send your old 12a out for a refresh and upgrade. I had mine converted to a 16g wheel, and it is a blast. Stockish rebuild on my engine, boosting the 16g @ 15psi, ms2 controlling everything, 2.5 inch exhaust, 52mm TBI, hardpipes, etc... The car is very fun at that level but still living in the safe zone for a mild g54. Btw, these engines don&rsquo;t generally have a long life span in the high rpm world. It&rsquo;s a 2.6 liter with pistons and rods that are very similar in size to that of a conventional small block v8. It isn&rsquo;t going to rev like a smaller displacement engine without a lot of work on the bottom end.

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Steering coupler replacement U-Joints are available here...
http://www.starquest...howtopic=145280

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#14 Fuze

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Posted 23 February 2018 - 10:53 AM

View PostAlrightyThen, on 22 February 2018 - 01:02 PM, said:

Fuze that sounds interesting. Yes the track I go to (Hallett in Jenkings OK) is smaller and more technical, not a big high speed course. Is the Super16G something still produced today, or do I need to find a used one? Thanks

You can get them from turbo builders in any size Mitsu made them in that is a variant of the TD05 turbo, you send them a core. The same TD05-12A (stock turbo) core can be milled out and fitted with bigger wheels to make a 14G, 16G, Super16G, 17c, 18G, etc... They all look the same on the outside and fit the same. The Super 16G is the sweet spot for response and good power without needing fuel system upgrades. The ones on eBay are for DSM's and Evo's usually, they are not exactly the same as they have a divorced wastegate dump and different five bolt flange on the hotside.

I used miketurbo.com for my last Mitsu turbo build and it's still good to go after a few years now. Crappy builders' turbos do not last long and tend to blow oil seals.

Mike Turbo Rebuilds LINK, Florida

Edited by Fuze, 23 February 2018 - 10:57 AM.

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#15 tux

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Posted 23 February 2018 - 12:30 PM

Try calling Mike turbo... I've sent emails once a month since September and never get a response

#16 importwarrior

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Posted 23 February 2018 - 12:32 PM

I love the 18G TD06


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#17 AlrightyThen

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Posted 23 February 2018 - 06:01 PM

ooh ok these are hybrid turbos. I'm coming over from the Fiesta ST crowd (my last car) and the stock frame hybrid turbos are what most everyone uses that decide to go turbo upgrade. Thanks everyone for the links to vendors or shops I appreciate that.

#18 louswheel

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Posted 11 March 2018 - 10:01 PM

Fuze has sound advice. Looks like you'll be stock fuel injection for the time being.  A super 16g, 17c or even 18g will be more than enough.  

A TD05 s16G can be found on ebay, Chinese knock off, you'll need to send your stock 12A compressor housing and 16g center cartridge to a turbo rebuilder to hone to the size of that 16g wheel.  

Or like already stated, send your 12a to a turbo rebuilder and have them turn it into a 16g compressor.  

I've ran the 16g and 17c and was more than happy. Has plenty of punch on a stock tbi set up.  Of course you'll need 2.5" exhaust to get the most of it.  

Also, keep in mind, these engines stop making power around 5500 to 6000rpm range.  Many many members in the past have come across this even on heavily modified cars.



#19 Hoosierquest

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Posted 12 March 2018 - 02:00 PM

They Peter out up top because of the tiny td05 hotside.  Tdo6 turbine will help it breathe better up top.
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#20 jinx

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Posted 14 March 2018 - 01:20 PM

Potential? a few street starquests touched hi 12s with 16g or 17c hybrids + TBI & piggybacks, stock distributor(timing curve)
good match for a ported stock manifold & turbine housing. I'd go 18g/td06 > 2.5 downpipe > 3" exhaust
turbolab good deals, lotsa 'starion upgrade' options:  https://www.youtube....3OQ&app=desktop
upgrade fmic or mod stock necks + better intercooler piping
Next, Megasquirt is good value due to fuel and timing control, plus carries over to MPI. There is a learning curve tho

turbolab sell new HX35 cartridges (~$300), new compressor covers and upgraded wheels too.... if u ever get around to that




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