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Damian · 05-02-2014, 11:12 AM

A little more info:

The GT3276 (420-450hp) and the modded GT40 (550hp) are journal bearing turbos with an adjustable wastegate spring pressure of 18-23psi. Both are oil only, NO water cooling. Still work just fine, just dont beat on it before you shut the engine off, or invest in a turbo timer to prevent coking of the oil.

The GT3788R (650hp) is a ball bearing turbo with an adjustable wastegate actuator of 19-24psi. Oil and water cooled. You still want dont want to beat on it before you shut the engine off or invest in a turbo timer, but the water cooling helps keep temps down, so it wont be much of an issue.

All 3 turbos: T3 twin scroll, internally wastegated, include the actuator, are brand new/never used.

If anyone has any further questions, feel free to ask, thanks.

05-02-2014, 11:12 AM	#2
Damian Senior Member Join Date: Jun 2009 Posts: 2,509 Tweet	A little more info: The GT3276 (420-450hp) and the modded GT40 (550hp) are journal bearing turbos with an adjustable wastegate spring pressure of 18-23psi. Both are oil only, NO water cooling. Still work just fine, just dont beat on it before you shut the engine off, or invest in a turbo timer to prevent coking of the oil. The GT3788R (650hp) is a ball bearing turbo with an adjustable wastegate actuator of 19-24psi. Oil and water cooled. You still want dont want to beat on it before you shut the engine off or invest in a turbo timer, but the water cooling helps keep temps down, so it wont be much of an issue. All 3 turbos: T3 twin scroll, internally wastegated, include the actuator, are brand new/never used. If anyone has any further questions, feel free to ask, thanks. __________________ 93 GMC Typhoon: new money pit/PITA. Now GT3788R powered. Boost, because sometimes atmospheric pressure just isn't enough. "If it has tit's or tires, you can be pretty sure your going to have problems with them..."