[vlamgat]

I have turned my TTRS into a Pro Pirelli World Challenge GTS car and done all the things you guys have been talking about. I did get the weight including the cage down to about 2650 with 1/4 fuel, safety gear, coolsuit, two ABS, custom rear suspension, lexan all round, Stoptech brakes and carbon fiber bonnet. I retained the full cross bar under the dash to support the cage and because roll over is a very real risk in the race world and this is an important structure (BTDT in a triple and the bar was important in retaining the rigidity which we measured post the event). Balance remains 55% front despite relocating the battery, coolsuit box and some cage structure aft of the centre line. If the fueltank was larger this could be adjusted further.

But for the slightly noisy exhaust it could be driven on the road but of course cannot be road legal. Car is fast, handles well with no understeer unti the limit and then itseasily corrected with a little throttle.

 

[1781cc]

with airbag... 3KG!!!!

 

[Madmax199]

Mirrors

 

[Madmax199]

Unused interior wiring harness :roll:

 

[Gonzalo1495]

Unused interior wiring harness :roll:

Holy

 

[FJ1000]

Guys, I might be being thick, but what are these big black brackets for? One either side of the car, just behind the front seats.

Can they be binned?

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[NickG]

Structural support, don't remove until you have a full cage tied in!

 

[FJ1000]

Structural support, don't remove until you have a full cage tied in!

Thanks Nick. Makes sense - they look pretty substantial (and heavy)!

I've got a half cage, welded in...should I keep them?

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[NickG]

Assuming that's your red bar in the picture and it goes side to side i'd say you would be ok to actually! Got any better pics?

 

[FJ1000]

It is indeedy

The problem with better pics is that it shows just how friggin red the cage is!! So all the pics are crap...My mechanic especially takes offence at the colour scheme haha

I'm also wondering about arch liners - I have no idea how much they weigh, but wondering if there's any need for them on a track car? I wonder if air flow to brakes and around the intake would be much better without them too?

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[1781cc]

Ditch the support bars, I did - its structural but the half cage makes up for it and yours is welded in so especially strong.

Arch liners... if you are running SMICs then trim the tops off and ditch - follow the VT blueprint on his thread. If you are running an FMIC then ditch entirely as I have done now.

Only possible issue may be backwash in the rain into the headlight electrics but unlikely and IMO not something I concern myself with.

 

[FJ1000]

Alright cool, I'll get trimming the front liners!

Removed the counterweight and rear towing point. New wheels have arrived too. Once I get those support bars out and wheels on, I must be close to another 45kg out since I got the car [emoji106]

Biggest weight saving for trackday tomorrow though is thanks to my mate's boss. Cancelled his day off due to some issues at work, so he can't make it!

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[brushwood69]

I'm also wondering about arch liners

.If your running a standard airbox beware! The wash from the tyres on a wet day finds it way in via the cold air feed duct and water then soaks the air filter and then on towards the MAF! Ditch the airbox or block the duct.

 

[Madmax199]

Rear wheel liners 6.8 lbs (2.94 kg)

 

[Madmax199]

Rear tow hook bracket 4.6 lbs (1.98 kg)

 

[1781cc]

aliens - 1.550kg

Evap, front arch mounts, bolts and n249 with all pipes (including the hard pipe cut off from the coolant one at the back of the engine), plus pollen filter - 3.9kg

The photo says 4.6kg, but thats because it had the neuspeed heat shield in there and that weighs 700g on its own (I forgot to do the pic without!)

 

[1781cc]

Standard downpipe and cats on a 225 weighs in at 12.1kg

For reference, my Pipewerx decat and downpipe was 6.25 kg - so little under half the weight saved front-to-mid placement on the car.

 

[djscoventry]

Hiya,

Great thread!

Can I ask what the rear roadster rear panel/bracket is?

Thanks guys!

 

[1781cc]

fuel tank undertrays (left and right), rear bumper and its two metal plates + bolts, small bracket that used to hold lower engine plastic surround and the surround itself, rear hatch electric pulley = 6.4kg

 

[TT_Italy]

A/C delete all engine bay .....

Condenser 2.685kg
Compressor, rubber hoses and bolts 6.95kg
Dryer, bolts and pipework 1.53kg
Ally cross pipes and manifold 0.85

Total 12.015kg

VT

Hi, we've just started a project like yours. (you can see a topic)
Which service belt have you used after you have leaved the AC?

Thanks