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This article discusses various turbochargers you can use on your engine. For an overview of turbocharging, see: Turbo.

1 Overview
2 Sizing
3 Flanges
4 Diesel vs. Petrol Turbos
5 Turbocharger Models
6 Nissan Turbos

Overview

There are three main turbocharger companies, all the other brands you see are rebrands, modifications or clones of these:

VF IHI units are prefixed with VF
TD MHI (Mitsubishi). TD04 - TD08 is size. 14-20 is the flow.
GT Garrett models start with GT

Sizing

T3 is pretty big for an A12. Needs high rpm, head work, etc
Mid-80s Nissan Pulsar turbo (E15 engine) has integral wastegate
go_the_datto actually tried Daihatsu diesel 1.0 turbo on A12. Good response in lower rpm ranges. Two make better twin-turbo application for A12

Here is some helpful info on everything from how a turbo works to choosing the right turbo for your engine based on compressor maps Turbo Tech

Album click to view Album click to view Album click to view Album click to view

Flanges are different to suit each turbo style. For example T3 pattern requires a T3 flange some of the common types are T25/28 ,T03,T04, then there is open and split pulse.

A 1200cc engine needs a much smaller turbo than an 1800cc engine
If you use very small turbos such as those on the Kei cars, use two of them. You'll get no turbo lag, and plenty of boost

450hp T3 (large flange) GT30 (large compressor housing) -- good for 600 hp
Album 4427 Album 4426

^POST quote: ive got a T3 on my A14 and boost doesnt start kiccking in till about 4000-4500rpm

Flanges

Flanges come in standard sizes, although there are many variations so always double-check before purchase. Turbo adapter flanges are also available:

BOLT PATTERN
T2 (T25)  2.87 x 1.58
T3 (TD03) 3.40 x 1.75
T4 (TD04) 3.25 x 2.75
Subaru 3-bolt

Diesel vs. Petrol Turbos

Barpk: The main difference between a petrol and diesel turbo is its seals. Diesel turbos don't have positive seal turbo seals, which means that if put it in a suck-through system they can leak oil under extreme vacuum, which happens when throttle is closed. This is not a problem in a blow-through system.

Turbocharger Models

Daihatsu Charade Turbo. One rebuilt cost $300. The charade turbo is mall so it will boost at low rpm and have low rpm torque. 1200rallycar ran two of these on an A12 A14 and A15, getting full boost before 3000rpm and had up to 15psi without wastegates.

550cc Daihatsu Mira turbo

T2. Good size for an A12, but older design not so good for ultra high boost. On an A14 with GX head, the Pulsar T2 started to boost at under 1000 rpm and was all in with nothing to spare at 3500. It worked better with a larger housing T2 from an 1800 Bluebird SSS, that would start to come on at 2700 and rev freely to over 7500.
- Nissan Pulsar EXA
- FIAT Uno Turbo
- LD20T JDM

Subaru with iconic 3-bolt flange. WRX uses mostly IHI turbos, though some Mitsubishis are used. See Subaru Turbo List as NASIOC

TD04 (from WRX/Forester 2 liter) is good for 220-280 hp. Was a little laggy with A12 driving it around the block and having to slow down a lot on the corners in 1st gear. But when on the track full boost came about 3500-4000. A bit laggy but went like a freight train.
TD04L-16T on A15 ^POST quote: "Should be quick to spool and 150kw to the rears without too much trouble on E85" with turbo camshaft"
Post 485711
Subaru EJ20 twin turbos, from Subaru B4 (e.g. Liberty twin-turbo)
Album 12197 Album 12198

CT12 Toyota turbo

Z18T on A12 to A15 spool up well

T25 is large for a stock A15
- CA18DET

T28
- GTR RB has smaller exhaust housing than the T28 on an SR
- Garrett T28060RS
  Album 17698 Album 17944

Hybrid T34R
Album 7352

1.6 VW diesel KKK

KKK K03, very close in size to a T2
- 1.8 litre Audi
- very small for a 1.8 litre motor

GT17 are just about the smallest ball-bearing turbos you can get from Garrett. Cheap and use T2 flange. Used on late model Saab
Album 18687 Album 18688 Album 18689

GT15 garrett cheap and works well

Garrett from a Merc VITO Van, a tad bit bigger than a T2. 3rotor reported very good response with an A15
- EX-AR= 0.43 IN-AR= 0.45
Album 9903

Nissan Turbos

S13 CA18DET = T25
S13 SR20DET = T25G
S14 SR20DET = T25G
S14a SR20DET = T28
S14aJDM SR20DET = T28BB
N14 GTiR SR20DET = T28BB
S15 SR20DET = T28BB

Nissan turbos have a regular Nissan Part Number.


Made in Japan
GARRETT
TD 0335J
14411-79E00 [Nissan Part Number]
466075-1

14411-79E00 identifies the part as being designed for the U12 Bluebird (Applied Model Code 79E). It was fitted to SR20DT cars from 1989 October.

U12 Bluebird 8709-9108
14411-56E00 8709-8806 CA18DT.MT <> 14411-56E01
14411-56E01 8806-8910 CA18DT.MT <> 14411-56E02
14411-56E10 8709-8806 CA18DT.AT <> 14411-56E11
14411-56E11 8806-8910 CA18DT.AT <> 14411-56E12
14411-74E00 8709-8807 CA18DT.SSSR <> 14411-74E01
14411-74E01 8807-8910 CA18DT.SSSR <> 14411-74E02
14411-79E00 8910-9108 SR20DT

RS13 180SX (hatchback) 8903-9812
14411-36F11 8903-9011 CA18DT <> 14411-36F12
14411-36F12 9011-9101 CA18DT
14411-50F00 9101- SR20DT
            
S13 Silvia (coupe) 8805-9310
14411-36F10 8805-8807 CA18DT <> 14411-36F11
14411-36F11 8807-9011 CA18DT <> 14411-36F12
14411-36F12 9011 CA18DT
14411-50F00 9101 SR20DT

S14 Silvia 9310-9812
14411-69F00 9310- SR20DET
14411-RP801 9709- AUTECH TYPE JAPAN

S15 Silvia 9901-
14411-69F00 9901- SR20DET.AT
14411-91F00 9901-0010 SR20DET.MT
14411-75F00 0010- SR20DET

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Turbos