NA->TT Swap with the 5spd Transmission
- 2JZ-GTE, USDM complete with manifolds, accessories, turbos, etc
- ECU for 6spd
- Fuel pump ECU (Optional, but recommended)
- Fuel pump with base and filter
- Mass air flow sensor
- Injectors resistor pack
- Intercooler and piping
- Power steering reservoir
- Cruise control cable
- Throttle cable
- Fan shroud (just the big one, the lower one is the same)
- TT Tach (good time for the TRD 10k RPM tach!)
- Upper radiator hose
- Heater hoses (3)
- Harness connector #10841 (to NA fuse box)
- Harness connector #????? (to W58 transmission)
Required Parts for California Smog:
- Air filter box
- Intake pipe to turbos
- Charcoal canister
- Pre-cat and main cat
- EGR assembly
- Rear O2 sensor
Recommended Parts for Maintenance:
- Full engine gasket set
- Spark plugs
- Vent hoses between valve covers
- Coil pack connector clips
- Other connector clips
- Accessory belt
- Silicone vacuum hose kit
- Thermostat, gasket
- Water pump
- Timing belt, etc.
- Lower radiator hose
- Flywheel bolts
- Pilot bearing
- Release (TO) bearing
- Follow the factory manual on how to pull the NA engine
- I kept the 5spd transmission but still pulled it with the engine. It's easier that way.
In this case, drain the transmission oil too, unless you can somehow keep it from
spilling out from the back. You will need the NA flywheel and clutch to use the W58.
- The connector on the TT 6spd harness for the reverse light signal on the transmission does not
match the connector on the W58 5spd transmission. Either buy a new clip or carefully remove
the one on the NA harness and install it on the TT harness.
- Keep the A/C compresor connected to the lines and in the engine bay. It'll bolt right
up to the TT block.
- You can keep the NA power steering pump if you don't want to disconnect the high pressure
lines. You'll need to remove the NA reservoir and install the nipple from a TT pump
that connects to the external TT reservoir. It'll be a good time to install a new
O-ring at this point (mine leaked).
- If this is a California car, the chassis will already be equipped with a rear O2 sensor
by the main cat. The NA sensor will work with the TT ECU and cat. I'm not sre what people
with non-California cars do about the rear sensor.
- Check all electrical connector clips for brittlenes, particularly the ones by the intake manifold.
Replace where necessary.
- Clean the injectors prior to installing the engine.
- Follow the factory manual on how to install the TT engine
- The TT has a separate fuse for the fuel pump (EFI2). Because of this, the TT harness does not perfectly
match up to the NA fuse box. There are two electrical plugs, one matches, the other doesn't. What I did
was replace the connector on the TT harness to plug into the NA fuse box. There are three wires on the NA
side and four wires on the TT side. Three of the four wires correspond perfectly to the NA fuse box. I
crimped the leftover thin black-red wire with the thicker black-red wire. I also used those wires as the
signal to for the fuel pump relay. The dotted-line boxes in the diagram shows what I had to add or modify:
Pics from my swap:
Replaced the broken ECU connector
Cleaned engine and installed Hose Techniques silicone vacuum hoses
Removed radiator/hoses, header/cat/catback, intake assembly
Removed bumper, headlights, hood, driveshaft, misc stuff, drained PS
Replaced tach, removed wiring harness from interior, removed PS, removed AC, replaced fuel filter, etc
Pulled the motor with transmission
Installed cat, catback, radiator, other engine bay stuff...
Fill tranny with oil, install IC and piping, install fuel pump. Almost done!
Updated: January 23, 2005
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