Part of an article from a J's Tipo on homologation specials. This section specifically on the TA64 GrpB rally special. I had to go over the translation a few times but think pretty accurate now.
CELICA GT-TS
Run hard on the dirt with a twin cam turbo!
Celica was introduced in 1982 as Japan's first specialty car equipped with a twin-cam turbo engine.
The Celica 1800GT/T made its commercial debut. The installed engine, the 3T-GTE re-engine, is based on its model name.
As you can see, it is a power unit based on the 2T/G engine, which is highly regarded as a masterpiece of the 1.6L. Specifically, the total displacement was increased to 1770cc by extending the stroke by 8mm, and a turbocharger made in-house by Toyota was installed. As a result, the 1.8L class at that time
Unprecedented maximum output of 160PS/6000rpm、21.08kgm/4800rpm.
The bore of this high-performance engine has been enlarged by 0.5 mm, and the total displacement has been increased to 1791cc to create a special unit 4T-GTEU.
The limited production car equipped with 4T-GTEU engine is the Celica GT-TS (hereinafter referred to as GT-TS).
GT-TS is a special machine for WRC participation, and the engine installed on it, 4T-GTEU, is completely exhaustive.
Volume is 21cc more than 3T-GTEU
at 1791cc. This is because of the turbo coefficient due to regulation!
When multiplied by 1.4, the total displacement is 2507cc.
This is a measure to set it in the 2.5 to 3.0L class.
3T-GTEU・If you multiply it by 1.4, you get 2478cc, which becomes the next level lower class 2.0~2.50L Therefore, 0.
The total displacement was increased by enlarging the bore by 5mm. The result is 2507cc when multiplied by the turbo factor, and if physically possible, the displacement could be up to 3L in terms of regulation.
Expansion was allowed.
GT-TS was the WRC standard at the time.
This is a machine built to meet Group B regulations. As a result, only 200 units were produced, most of which were sold in Japan. GT-TS is just a base machine,
Displacement, rear suspension
(changed to 4 Link Rigid), and other than the vehicle weight, it is no different from GT-T.
Nothing will change.
PIC CAPTION
Unlike the 240RS, this one was also sold in Japan, so the seats are firm and the cockpit looks like a production car.