User: what engines do they have
Assistant: The fourth-generation Toyota Celica models ST160, ST162, and ST165 have different engines as follows:
– **ST160**: This is primarily a variant with a 4A-GE engine — a 1.6L inline-4, which was common for more basic sporty Celica models. (General info from the chassis designation AT160/161 mentioned together with 4A-GE.)
– **ST162**: This model uses naturally aspirated 3S series engines. Specifically:
– The 3S-FE engine: a 2.0L DOHC engine focused on economy and reliability.
– The 3S-GE engine: a 2.0L DOHC performance version with higher compression and features like Toyota’s T-VIS system for variable intake. In European versions, the post-facelift ST162 is referred to as 2.0 GT-i 16 with the 3S-GE.
– **ST165**: This is the turbocharged AWD Celica, known as the All-Trac in the US or GT-Four in other markets. It uses the 3S-GTE engine:
– A turbocharged 2.0L DOHC 3S engine with a boost-friendly compression ratio (typically around 8.5:1), featuring a CT26 turbocharger and an intercooler.
– The power output of the first generation 3S-GTE in the ST165 is around 136kW and 240Nm torque.
Summary by engine family:
– 4A-GE (1.6L, mostly ST160 variant)
– 3S-FE (2.0L NA, economy version)
– 3S-GE (2.0L NA, performance version – used in ST162)
– 3S-GTE (2.0L turbocharged, used in ST165 All-Trac/GT-Four)
The 3S engines are iron block, 2.0 liter displacement, with DOHC 16-valve heads, but differ in head design and specific tuning for performance or economy. The turbocharged 3S-GTE in the ST165 is distinct with lower compression and a turbo system for more power and AWD configuration.
This engine lineup evolved over time, with newer gens of 3S-GE and 3S-GTE used in later Celicas beyond these models, but for the ST160, ST162, and ST165 specifically, these are the primary engines used.
If you want exact power outputs or specs per engine variant model year, feel free to ask!
This information is summarized from multiple forum posts and documents referencing the 3S engine history in the fourth-generation Celica and differentiating the specific engines for ST160, ST162, and ST165 chassis codes .
User: what refrigerant do they use
Assistant: The fourth-generation Toyota Celica (including ST160, ST162, and ST165) originally used **R-12 refrigerant** for its air conditioning system. This was the common refrigerant in vehicles of that era. The factory AC system design, compressor, and fittings were made for R-12.
However, due to environmental and legal reasons, many owners have converted their systems to use **R-134a refrigerant**, which is more modern and environmentally friendly. The conversion from R-12 to R-134a typically involves:
– Replacing or checking the O-rings (though Toyota’s o-rings may be compatible, size differences exist).
– Possibly replacing the receiver/drier.
– Using PAG or POE compressor oil compatible with R-134a.
– Evacuating air and moisture properly before recharge.
The typical refrigerant charge amount for the system is about 600 to 750 grams (approximately 1.3 to 1.7 lbs) regardless of the refrigerant type once converted.
In summary:
– **Original refrigerant:** R-12
– **Common retrofit/replacement refrigerant:** R-134a
– **System refill amount:** About 600-750g (1.3–1.7 lbs)
– **Important notes:** Proper evacuation of moisture and air is vital. Receiver/drier replacement is recommended when opening the system.
This information has been gathered from the official Toyota service manual excerpts and discussions in dedicated Celica forums where owners share their experience converting and maintaining the AC systems on these models 【2:ToyotaCelicaBGB1989_22_Air_Conditioning_System.txt】【6:alltrac-forum-posts_02.txt】【16:alltrac-forum-posts_02.txt】.