Resurrection and development of V8 Project GT1

[mike_sekinger]

... from the other side.

 

[mike_sekinger]

Not a huge fan of Rawl nuts, but they certainly have their place - PAS lines fitted.

[alanlambert]

You are on a roll at the moment 👍

[mike_sekinger]

Working 100% from home office, so getting a little bit done each day.

[mike_sekinger]

Had a great visit from Andrä Schroers today.   I'm absolutely thrilled at the standard of the his carbon work. Although still at the experimental stage, the finish and fit of his arch work is really excellent.  So much more to come in the fullness of time.

No wonder I'm grinning like an idiot....

[Barrykearley]

I’m off for some quiet time 🤣

[mike_sekinger]

Slow progress.....Custom billet spacers to get the necessary rear track.

Pads fitted finally, but won't have hydraulics/cables for a while yet.

[drdoom]

May have asked at some point in the past, if so pardon the tedium, but is the brake rotor hat material known? Old references of impeccable credibility state AL 2024 is the only way to go for professional racers yet I've seen none offered in that for top street performers .

Cheers

[mike_sekinger]

The mounting bells were supplied by AP Racing.  I can't find a statement on which aluminium alloy is used.

[MrDangerUS]

Mike,

What is the APR caliper PN# ?    Do they fit 18" rims, or need to go larger?

Edited August 2, 2021 by MrDangerUS

[mike_sekinger]

Front: AP-Racing 6-pot CP5555-814/815 with CP3581-536/537 G8 (356x32mm) discs

These fit nicely inside a 18inch wheel

Rear: AP-Racing S350 4-pot (moved from the front to leading in the rear) with CP3580-64/65 G8 (315x28mm) discs
 

[mike_sekinger]

A little more on the project.  Down on it's wheels for some final reference measurements for the custom front spacers.  The rears are done.

[mike_sekinger]

Following the trail blazed by Andrä and after saving my pennies for a while, the X-Shift 6-speed sequential gearbox is ordered.

These are the chosen ratios for my unit based in 7400 limit - will be close to 200mph in 6th at 8000rpm

[cweeden]

Ooh, shiny. What's the final drive ratio (to save me trying to work it out 🙂 )

[mike_sekinger]

FD = 3,2

[Barrykearley]

That’s gonna be amazing mated to that amg A45 engine 😍

[ramjet]

Wow! I was going to say that I saw a spot of dirt on the front left caliper setup, but I didn't.

Isn't it a shame that all of this sort of thing gets covered up?

[mike_sekinger]

Bit of an odd post, but I think it makes some sense at this stage.

The gearbox is not far from completion and I`m soon to start with the engine build for this project.  As already stated, the car will be for sale soon after project completion and there is an opportunity for anyone who is genuinely  interested in buying the finalised car to influence the specification.

The current intended spec is as follows (with options where relevant)

- Target weight: close to 1000Kg

- Target power: >520bhp

- Top speed: 186mph @ 7400rpm

- Upgraded 918 with ductile iron liners, Saenz forged rods, CP Carrillo forged pistons, special BE shells, ported cylinder heads, stainless 316 tubular manifolds with BorgWarner EFR 6758AL turbos. Engine is running Motec M800 ECU and ADL. Twin Motec wideband lambda enabled. Exhaust is twin centre exit.

Option to leave existing polished plenum arrangement or move to a motorsport plenum with 8-primary injectors instead of the OEM 8 + 2 secondaries. Option also to re-paint the polished plenum and cam covers in any colour desired.

- Engine will be twin chargecooled, with two options for the system:

1) Motorsport set-up with twin Spearco chargecoolers fitted in the boot area

2) Pro Alloy system that preserves the boot space coupled with stock ex. manifolds and full T28 60mm compressor based hybrid turbos.

- Will retain PAS, but water pump has been moved to Davies Craig EWP 150 electric pump and fan controller. Custom Aux belt to reflect removal of water pump and A/C compressor  Option to retain the OEM mechanical water pump.

- Pro Alloy main coolant and twin-pass chargecooler radiator. There is no A/C fitted from the factory on this car.

- X-Shift 6-speed sequential straight cut dog engagement gearbox with 140mm AP Racing multi-plate carbon clutch pack and slave cylinder.  Option available for steering wheel paddle shift or traditional gear level. Automatic throttle blip for downshift.

- Penske 3-way dampers, with option on road or track springs

- AP Racing 6-pot front and 4-pot rear with AP Racing grooved fixed discs with alloy bells (front: 356mm and 320mm rear). Mechanical handbrake

- Wheels: Rota GTR 18x10 e35 and 18x12 e20, with Yokohama Advan A052 in 255x35 and 315x30. Spacer/Adaptor to 5 x 114.3

- Aluminium fuel tanks will be fitted.  Option to install a foam bag tank

- Interior will be fitted with lightweight black carpet with full Sport350 carbon interior parts still installed. Option to leave interior completely stripped and painted in a desired colour

- Option available to include or remove the heater

- Seats will be Corbeau carbon race seats, with Willans 6-point harness

- GT1 arches will be visible super-lightweight carbon

- GT1 carbon rear deck

- GT1 carbon front splitter

- Although the exterior colour is currently in the standard New Aluminium, it is planned to re-spray to Black to match the GT1 cars that ran in `96 BPR.  It is also planned to install the full #22 car decal set from the same BPR series.  Option would exist to do something different with the colour

- Rear wing is planned to be a high downforce motorsport version, but option would exist to install whatever was desired.

Rough price guide (dependant on final spec) not less than 90K€.   I would invite people who are interested to contact me via PM, but please only if you are serious about becoming the potential owner and want to discuss personalising the car.

Mike S

 

 

 

[exeterjeep]

1 hour ago, mike_sekinger said:

GT1 cars that ran in `96 BPR. 

Can remember watching them at Silverstone, recall one caught fire just near where I was at the time.!. Also saw the previous non V8 version racing at the same place with Zanardi at the wheel.

Great looking esprits.

[Erikl]

Mike what spring rates will you run on this car?  If you dont mind sharing.

[mike_sekinger]

There are two options:

Road: F 350  R 375

Track: F 550  R 575

In the end the spring rates and valving of the dampers are adaptable for purpose.

[mike_sekinger]

Another small piece of the jigsaw comes together. Internally baffled fabricated fuel tanks.

[mike_sekinger]

X-Shift 6-speed gearbox almost ready for assembly.

Gearbox has over 600 lb/ft torque rating.

[cweeden]

I didn't realise it came in kit form. 

[mike_sekinger]

It doesn`t Chris.  The gearbox is being assembled and checked at X-Shift.  Should be ready for shipping early next week.