Resurrection and development of V8 Project GT1

[Erikl]

Beautiful

[cweeden]

How close is the driveshaft output centreline to original transaxle's centreline?

(looks fantastic BTW) 👍

[mike_sekinger]

As per the pioneering/proving work from Andrä - the driveshafts are at about 7deg aft and marginally lower than horizonal to the ground

[mike_sekinger]

Some further refinement required, but I now have a working cable based gear selection.

 

[mike_sekinger]

Air filter arrangement sorted.  Going for 2x ITG Maxogen closed airboxes (each one rated up to 300bhp)

[mike_sekinger]

Another small job - LH tank heatshielding where the turbo is closest to the chassis/body.  Decided on Teknofibra

TEKNOFIBRA - thermal insulation

[mike_sekinger]

and the closed airbox filter and elephant dick.  It`s a pretty direct route from cold air to the turbos.

 

[Escape]

On 16/03/2022 at 12:36, mike_sekinger said:

Air filter arrangement sorted.  Going for 2x ITG Maxogen closed airboxes (each one rated up to 300bhp)

Looks good! I'm also considering the ITG airboxes, both for the Esprit and the Range Rover. I didn't realize the routing could be so direct. Did they come complete with the rectangular intakes?

[mike_sekinger]

23 minutes ago, Escape said:

I didn't realize the routing could be so direct. Did they come complete with the rectangular intakes?

No.  The intakes were chosen to make the routing as direct as possible as I do not have the compartment walls

[Escape]

I though it looked too easy. 🙂 I'll work something out, at least now I have a reference.

[mike_sekinger]

The ducts were sourced from here:

Rectangular air intake | Air intake | Brake ventilation | Brakes and accessories | Vehicle technology | ISA-Racing Motorsport Accessories

[mike_sekinger]

Finally, my custom flywheel is complete.  PTB-Racing here in Germany provided the solution to adapt the existing solid flywheel for the 140mm carbon stack.

The AP clutch has a torque capacity of over 800 ft.lb, but with the sequential dog gearbox, use of the clutch should be limited.

[mike_sekinger]

The bare flywheel is 5.5Kg  (stock: 5.9Kg)

Material removal counters the additional weight of the steel adaptor plate

Clutch assy. is 2.8Kg (Stock AP twin-plate: 7.2Kg)

[Trevsked]

I love a light flywheel and clutch, looks very nice.

 

Trevor.

[mike_sekinger]

More parts arriving for the gearshift and sequential gear control

[mike_sekinger]

Having a friendly and capable local engineering company is a huge benefit.

Clutch alignment tool prepared.

[mike_sekinger]

So frustrated with the AP Racing German distributor.  2 months waiting for the ordered (and paid for) clutch slave. Today, they cancelled the order because they cannot confirm a delivery date.

A call into the UK distribution network and presto !  The item will be available in 1 week.

Continuing on with other small jobs.   The problem with custom work is that you end up having to prepare other bespoke parts to fit them... here brackets for the gearchange and cable

[mike_sekinger]

Finally my clutch slave arrived after 2 months of waiting.  Now I can install the flywheel, clutch and transmission and move forward.

[fjmuurling]

Two hydraulic connections?

[Barrykearley]

One for bleeding ?

[drdoom]

5 hours ago, Barrykearley said:

One for bleeding ?

Yup, that's how it's done with concentric slave cylinders.

[mike_sekinger]

Improved gearshift with new cable, revised cable routing and cable clamps. Installed the neutral block lifter on the gearshift and it all works nicely.

 

 

[mike_sekinger]

Just finishing off a few things on the gearchange.

Hydraulic hoses arrived this morning, so I can now remove the gearbox and install the flywheel, clutch pack and slave cylinder.

[tomcattom]

20 hours ago, mike_sekinger said:

Really impressive stuff Mike. One question though - purely from curiosity/learning - that cable abutment bracket on the top of the gearbox looks to be flexing/moving quite a bit in that video, is that expected? Will it not potentially fatigue over time?

[mike_sekinger]

Hi Tom,

The current arrangement is made from a simple piece of bent 5mm stainless plate that the OEM cable abutment is mounted on.  I did also notice the flex, so will add additional support on the open side.  There are already some threads in the top of the gearbox that I can use for that.

As mentioned before, as soon as you start making bespoke stuff it`s amazing the messing around that is needed to get it right.

Cheers,

Mike S