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IanA's Z300S Barchetta Build

By IanA · 173 updates · May 2014 to May 2025

Read the full original thread (with everyone's replies) in the archive →

July 2014

6 Jul 2014, 11:10am General Update


Watching that vid over and over- what a machine !!!
13 Jul 2014, 12:53pm General Update
Just driven 230 miles in my Jago- the last 120 miles like this
13 Jul 2014, 8:51pm Mechanical Overhaul Interior & Trim
In all its wire-wheeled glory

Dry fit and exhibition revs only.
I fitted the MWS Jaguar wire wheel adapters today and here it is:



The adapters fitted perfectly in terms of bolt PCD and diameter. There was <1mm play against the hub centre as well- result.

My only reservation is that the holes in the adapters are 45deg countersunk whereas the bolts have a 60deg bevel. The standard bolts clear the curly hubs. I did try my cone washers but that would need the bolt heads to be trimmed slightly. I'm not convinced that the washers are the best solution anyway- anyone know of 45deg chamfered wheel bolts? M12x40mmx1.5mm pitch?

13 Jul 2014, 8:55pm General Update
Z300S Barchettas #1 and #4 together

What is the collective noun for barchetti???

13 Jul 2014, 9:02pm General Update
Thanks- that would be my favourite option.
13 Jul 2014, 9:43pm Mechanical Overhaul
These are 195/65x15 Falken AS200 All-Weather tyres.
I can see why it's called a Barchetta- it steers like a boat...I think I need to play with the tyre pressures. It is a very comfortable ride though.
Repeat- exhibition revs only until I get the adapter bolts sorted. Alloys back on for now.
13 Jul 2014, 9:45pm General Update


I don't know... 27mpg and great ground clearance !!!
17 Jul 2014, 8:13pm General Update
Stripes and Show Plates

Yes- another good evenings work



Have to say that the effect is not as good as I'd expected. I think that's because the Maser I modelled it on is that bit smaller.

I used 4" stripes spaced 4" apart. Maybe that should go to 5"+5"+5" for a better proportion.
17 Jul 2014, 9:39pm Chassis and Body


Yes- twigged that matt black spray requirement already- the expanded metal grille I have to go in there is quite expanded but will try it anyway before getting anything with a smaller mesh.
No problems with overheating in this weather I suppose???
18 Jul 2014, 10:49pm Engine Chassis and Body


I was surprised when I first saw the size of the viscous fan on the engine AND the electric one on the rad. I'd never compared the size of the original intake with that on the Z300S so glad to hear it's all adequate.



Slowing down? You obviously weren't driving fast enough then. Although I do remember that part of the A1 as being prone to 100mph cruisers in the morning and then seeing the Talivans on bridges when coming back- so it's obviously closely monitored.
18 Jul 2014, 10:58pm Chassis and Body


I'm familiar with the concept and yes it does make sense but the point of the red stripes on a white car is to emulate the Maser A6 GCS pictured earlier.
I come back to the issue of scale meaning that the 4"+4"+4" is altogether too narrow on the Z300S. Also, I wouldn't want a casual observer to confuse it with a Cobra.

I measured the centre line down the bonnet but the stripes are not symmetrical on the bonnet bulge so I may be trying out 5" tape sooner rather than later.
19 Jul 2014, 10:15pm Chassis and Body


Yeah right, I'm sure that Bruce would be up for changing his 1954 Maserati A6 GCS paintwork if I pointed that out to him..
21 Jul 2014, 9:58pm Engine Electrics
Too quick flash

Z300S Barchetta #4 has LED front and side indicators and as a consequence exhibits a very fast flash sequence. A MOTable offence probably.

So- I eBayed and fitted a "25W Car LED Turn Signals Indicator Light Load Resistor Flash Rate Fix Relay" in parallel with each of the front indicators and that returned the flash rate to normal. They are just resistors, not relays.

Only problem is that the resistor blocks run very hot so for now they are out in the air flow behind the round vents on the front. Long term it may be an idea to mount them actually on the expanded metal. They get too hot to mount on any plastic part. Of course they can be wired in at any position on the circuits but it was most convenient to mount them using the existing connector break at the front.
22 Jul 2014, 10:13am Electrics
Yes I'd considered that as well, but in parallel. I'm not totally happy with the front indicators anyway. They have a nice low profile but don't reflect in the headlights enough. I have obtained some small lenses and some 21w capless bulbs so may end up incandescent rather than led anyway.
24 Jul 2014, 9:00pm Engine
Exhausted?

Always wanted to do this:



ever since i had a Lotus Seven S1 with similar. But real.



Should fool the casual observer:



and will all be in matt black of course.
24 Jul 2014, 9:05pm General Update
And would be quite easy to double up.
24 Jul 2014, 9:33pm General Update
Would have made it larger but used the pipe I had lying about in the garage and didn't want it to be too heavy an ornament either.

August 2014

1 Aug 2014, 6:04pm Mechanical Overhaul Electrics
More Flash

The original front indicators with their bright LED elements were very neat but just didn't seem prominent enough for everyday driving.
So I bought these:

they are incandescent but still low wattage so I've left the ballast resistors in circuit.

For 2014, I see that Bruce has mounted repeaters on the front edge of the wheel arch - could be a home for my now redundant ones.

1 Aug 2014, 6:07pm Chassis and Body

Not yet- I want some hi-res pics of those Mille Miglia number panels first!!!
10 Aug 2014, 7:12pm General Update
2014 Historic Specials day 10 August Burford, Oxon.

Pretty damp down at the Cotswold Wildlife Park today so not a great turnout...



The pics from both the 2012 and 2014 shows are here