Ultima RS - Name to be Determined…


It all begins with an idea. At some point the Ultima GTR became a dream car of mine, stored away in passing thoughts. Until recently I found an owner local to the SF Bay Area and had to meet Humble and Blunicorn. Unfortunate timing meant he was in a state of rebuild due a catastrophic fire.

Shortly afterwards personal funds were reviewed and an order was placed.

— Arrived in 2022 —

….Coming to a street near you in 2023…or 2024

photo courtesy of https://www.ultimasports.co.uk/Models/UltimaRS


Details about my build, to serve as a helpful reminder for myself and anyone curious. Lots is still being decided.

  • GM Performance LS7 - 7.0l (Rated 570 hp)

    Dailey Engineering Drysump - LS Production Left

    Radium Multiport FPR

    Walboro Hellcat Fuel Pump (x2)

    ICT LS Corvette Alternator Bracket Kit (551750-1)

    ICT LS Corvette - Low Mount 4-Rib A/C Compressor Bracket (551137-LS74-1)

  • Porsche G96.50

    1st gear: 3.82

    2nd gear: 2.05

    3rd gear: 1.41

    4th gear: 1.12

    5th gear: 0.92

    6th gear: 0.75

    Ring and pinion: 3.44

    Flywheel - Custom Ultima

    Clutch - TBD

  • Haltech Nexus R5

    Haltech PD16

    Raptor GP

    Haltech TPMS

    Aim MXS 1.3 Strada

  • Front

    Caliper - AP Racing xxxxx

    Disc - CP3580-1048RD (right-hand) / CP3580-1049RD (left-hand)

    Bell - CP2494-932

    Pads -

    Rear

    Caliper - AP Racing xxxxx

    Disc - CP3580-1048RD (right-hand) / CP3580-1049RD (left-hand)

    Bell - CP2494-933

    Pads -

    Parking Caliper - AP Racing xxxx

    Pads -

    Master Cylinder

    Front - xxxx

    Rear - xxxx

  • Oil - TBD [TBD]

    Coolant - TBD

    xx % water / yy% antifreeze + zz oz waterwetter

    Transaxle - TBD

    Brake Fluid - Motul 660 RBF

    HVAC Refrigerant - TBD

  • Seats - Tillet B4 or B6 TBD [currently B4 awaiting new production]

    Harnesses - Schroth Enduro 2x2

    Steering Wheel - TBD

    Pedals - Ultima OEM w/Detmers Design brake mod

Diary of Blog Posts

Keep up to date on the latest status of the car and its progress.

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Cremesicle ('94 miata)