13g Turbo Swap
Pics of Turbos
Turbo Swap
EGR Blockoff Plates
Front EGT Probe Tap
13g Turbos
The following pics are of the used 13g turbos that I purchased. The front turbo had damaged fins on the compressor wheel. The wheel was replaced and the turbo was rebuilt by GT PRO.
Damaged Turbo




Good Turbo


Both Turbos


Other Pics




Turbo Swap
Here are some pics and some of my suggestions for a turbo swap (applies to any TD04 direct replacement turbos). I primarily used the Turbo Swap Guide by Errin Humphrey. I will not reprint the info from that web page, but I will include any relevant notes or important differences from that guide, based on my experience.
(Please note that I did find this guide very helpful, and any additional comments I have are only intended to be additional help to others, and in no way are intended to be negative criticism.)
I used the parts list to order the parts that I felt necessary. (Having the necessary replacement parts on hand is important for making things go smoothly.) I ordered and used most everything on the list with the exceptions of: front and rear oil return lines, A/C line o-ring, and plenum manifold bolts. Definitely order extra coolant line gaskets (MF660064).
I did not go through the preiminary removal steps in order, and I started right in on getting to the front turbo.
For the preliminary steps, I did not find it necessary to:
- drain the engine oil (almost no oil in the oil feed and return lines - oil changed after new turbos primed and oil circulated through system)
- remove exhaust system (only downpipe and precats removed)
- remove air filter, MAF sensor, and intake hose that connects to MAF sensor (removing the hoses that went to inlet of each turbo were sufficient)
- battery, battery tray and windshield washer reservoir
- remove throttle body (intake plenum was removed by unbolting from throttle body)
Notes and changes for front turbo:
- upper (exhaust manifold) heat shield stays on the vehicle but flexes to allow access to necessary parts
- heat is very helpful for removing stuck bolts (worth the investment for some type of torch)
- o2 housing did not have enough clearance to get it off the turbo studs, so it was separated when the turbo was removed
- carefully watch the coolant and oil feed/return lines to make sure not to damage them when removing turbo
For the front turbo, I did not find it necessary to:
- disconnect the front o2 sensor (laid it on the frame)
- remove front cam gear cover
Notes and changes for rear turbo:
- Plenum removal may not have been necessary, but it did gain additional room for access to the rear turbo, and it was a good opportunity to block off the EGR system
- For removal of the rear heat shield after it has been unbolted, I slid the shield toward the passenger side of the vehicle until it was as far as possible behind the coolant eye bolt. Then I lifted the drive side of the shield upward, and continued to slide the shield toward the passenger side of the vehicle (slightly rotating the shield). That was continued until the driver side of the shield was clear of the firewall and turbo, and it was removed.
- heat is very helpful for removing stuck bolts (worth the investment for some type of torch)
For the rear turbo, I did not find it necessary to:
- remove clutch booster vacuum hose
- "take off shoes; climb up on top of engine; reach way down with right arm; grab lowest edge of heat shield; give repeated violent upward yanks until heat shield comes out" - see note above for *slightly* easier method that worked for me
- unbolt oil return line from turbo while on vehicle (the oil return line was left attached to the turbo during removal with the whole assembly being carefully twisted and turned to gain clearance, and then lifted out of the vehicle)
Parts


Removal











Front Exhaust Pics







Installation


EGR Blockoff Plates
EGR blockoff plates were made for the EGR valve (located on the rear passenger side of the plenum, near the throttle body), and the EGR pipe (located on the rear driver side of the plenum and connecting to the rear o2 housing).
There is debate over the usefulness of blocking the EGR system, as to whether it will gain any power, or stop any leaks in the intake system. Whether or not those are relevant, blocking off the EGR does make it significantly easier to remove the plenum because of not having to fight the EGR pipe + gaskets, and the EGR valve during the removal and reinstallation.
EGR Valve Blockoff


EGR Pipe Blockoff



Front EGT Probe Tap
A used Autometer EGT probe was rethreaded to tap into a 7/16" nut, and the nut was welded into the front exhaust manifold. The front upper heat shielf was cut and the front metal intercooler pipe mounting bracket was modified to allow clearance for the EGT probe. I do not have an EGT gauge at this time, but the turbo swap was the perfect opportunity for adding an EGT probe, and the EGT gauge can easily be wired to the probe at a later time.



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