Owners of the fifth generation Toyota Supra are thrilled about that car

    In July 1993, the fourth and so far last generation of the Supra came on the market. Internationally, this type is called " Supra MKIV ".

    In early 1986, the third generation of the Supra was introduced. It is also the first that has not been marketed with the suffix Celica.

    The second generation was presented in the fall of 1981 and had a completely independent drive with the new (170 hp) 6-cylinder engines.

    The first Supra built from spring 1978 to summer 1981 was still offered as a top version of the Celica first in Japan and later in the United States.

    Zylinderkopf - Neuentwicklung von Suprasports | Forum

    Topic location: Forum home » Supra MK4 » Technik (Tuning)
    Suprasport hat für den 2JZ einen kompletten Zylinderkopf neu entwickelt. Hochinteressant, aber sicher auch entsprechend teuer:

    This week we finished the final prototype of our billet head for #2jz engines. The head features two cam profiles, a short duration (advertised: 245 degrees) 8.25mm lift for idling and cruising and a long duration (advertised: 300 degrees) 13.25mm lift for high RPM and on-boost situations (2mm more than the current most aggressive cams available). This will allow your 2jz engine to idle and cruise like stock, have good fuel economy, enough vacuum, good exhaust gas velocity and pass emissions easily, while also being able to run very high horsepower.
    To finish the broadest powerband possible we have optional dual #VVTi, intake from 2jz-vvti exhaust from 3sge beams. This is optional as some tuners would prefer less programming we can do fixed gears.
    For more flow we are running a wider valve angle and bigger valves. The intake valves in OEM quality are 36mm (37mm for Supertech) and the exhaust valves are 32mm in OEM quality (33mm for #Supertech). That is +3mm on the intake and +4mm on the exhaust.
    The head is made completely with OEM parts readily available at any company. The ports are all CNC matched and machined and we start with a billet chunk of new aluminium, not your 25 years old #Toyota casting.
    The head has no buckets, valve lash is adjusted in 30 minutes with a screw driver like honda engines. We are 100% port compatible with the 2jz head so your intake and exhaust manifold will fit. For special racing applications we are able to do a straight port exhaust design, although the stock exhaust design is proven to 2000+HP already.
    We will provide basemaps for any aftermarket engine management system (#ProEFI, #Link, #Haltech, #AEM) and even the older systems like AEM series 1 can control all functionality in this head.
    If you are at the #Supra meeting in Las Vegas ask for Arnout and you can see this prototype in person! #SupraSport #instagram
    More images can be found on: