Forced Induction Superchargers | Turbochargers | Intercoolers

TWO DIFFERENT TURBOS IN Parallel POSSIBLE

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Old Dec 11, 2015 | 09:00 AM
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Default TWO DIFFERENT TURBOS IN Parallel POSSIBLE

HAS this ever been done? is it possible ? is it possible thru a single inlet and outlet intercooler or would I need a dual inlet?
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Old Dec 11, 2015 | 09:05 AM
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Durp (reading is paramount)

Last edited by gtfoxy; Dec 11, 2015 at 09:33 AM.
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Old Dec 11, 2015 | 09:12 AM
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what issues would be stopping me from building boost ?
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Old Dec 11, 2015 | 09:30 AM
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Wait. I misunderstood the question. Are those two different sized turbos?

You have both turbos running into a Y & then one outlet?

It won't make boost at wot?

Last edited by gtfoxy; Dec 11, 2015 at 09:43 AM.
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Old Dec 11, 2015 | 09:31 AM
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Originally Posted by gtfoxy
Wait. Are those two different sized turbos?
yes they are
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Old Dec 11, 2015 | 09:41 AM
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That's not a good idea.

What size are they?
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Old Dec 11, 2015 | 09:42 AM
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(1st turbo specs on pass side)
T70 Turbocharger!!
Turbine Turbocharger
Oil cooled only
6 blade propeller
Compressor Specs :
4" Compressor Inlet
2.226" or 56.55mm Inducer
2.552" or 74.83mm Major
Compressor .70 A.R.
Compressor 75 Trim
M14 Compressor
Turbine Specs :
Twin Entry Type
11 Blade Type
58.18mm Exducer
Turbine .84 A.R.
Turbine 60 Trim
2.894 " or 73.50mm Major
2.275" or 57.78mm Minor
(2nd turbo on drivers side)
Header:
1.65" Runner Tube
2.5" Cross Header Pipe
3" Exhaust pipe
T70 Turbo and Wastegate:
Standard T4 Flange to Manifold
0.70 A/R Compressor, 0.96 A/R Turbine
Big 4" Air Inlet, 2.5" Air outlet
3" V-Band Exhaust
Wet Floating Bearings
Oil Cooled
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Old Dec 11, 2015 | 09:43 AM
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from what i hear is that the issue would be the smaller turbo spooling up 1st and forcing it against the bigger turbo . is that correct .
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Old Dec 11, 2015 | 09:45 AM
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Ok, you are saying "T70". That doesn't mean anything looking at your turbo specs.

What is the wheel sizes on the 2nd one?
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Old Dec 11, 2015 | 09:56 AM
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http://www.ebay.com/itm/231054559617?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
thats 1 turbo
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Old Dec 11, 2015 | 09:56 AM
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http://www.ebay.com/itm/380861381210?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
thats the other turbo
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Old Dec 11, 2015 | 10:09 AM
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You're going to have to contact them to get the specs or take the turbo off & measure it.

You never answered my question of does it make positive manifold pressure at WOT?

Secondly, you have to have the same A/R's.

If the compressor wheels are maybe a couple milimeters different, it may, may, work out somewhat OK providing the exhaust sides are identical. I wouldn't do it that way, ever, but it may work.

Why didn't you order another of the same turbo to begin with?
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Old Dec 11, 2015 | 10:24 AM
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im sorry. it does make positive pressure. i can post a video up in a second. and in the specs it shows different A/R's
And this is my 1st build i thought i order the same tubro by typing in T70

1 turbo
0.70 A/R Compressor, 0.96 A/R Turbine
----------------
2nd turbo
2.226" or 56.55mm Inducer
2.552" or 74.83mm Major
Compressor .70 A.R.
Compressor 75 Trim
M14 Compressor
Turbine Specs :
Twin Entry Type
11 Blade Type
58.18mm Exducer
Turbine .84 A.R.
Turbine 60 Trim
2.894 " or 73.50mm Major
2.275" or 57.78mm Minor
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Old Dec 11, 2015 | 10:24 AM
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is that the enough
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Old Dec 11, 2015 | 10:47 AM
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https://www.youtube.com/watch?v=8MRN...ature=youtu.be
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Old Dec 11, 2015 | 10:49 AM
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Need to know the compressor & turbine dims on both.

The big issue is turbine sizing, providing the compressors are even close to the same. That changes airflow & pressures across the side of the engine it is connected to. That requires different fueling & timing.
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Old Dec 11, 2015 | 11:17 AM
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sorry this is all the specs i can come up with
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Old Dec 11, 2015 | 11:40 AM
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Like I said. Take it off & measure it or contact the company.

Plus you need to have at most .68 A/R turbine housings unless you have one heck of a high-flowing motor.
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Old Dec 11, 2015 | 11:43 AM
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well from what i was told since one is a .84 and the other is .96 turbine housing, that these are a big difference and not really close to each other
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Old Dec 11, 2015 | 11:44 AM
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correct me if i am wrong but the main issue with having 2 different turbos parallel with each other is that the turbo that spools up 1st will push back into the weaker turbo.
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