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Stuart has the correct period. I suspect the tyres are Julian Majzub's Blockleys or Coker's Excelsior Comp H, which both look very like Dunlop 3 stud vintage racer tyres but have a less rigid carcass, harder rubber and are around half the price. They are more comfortable on the road, last longer and don't "scream" like the Dunlops do. Their only downside of the Blockleys is that they get flats easily from being left parked without rotation for any long period. We use the Blockleys on a number of cars and I use the Excelsior Comp H tyres on the front of my three wheeler Morgan, as they work better on very light cars. Just like the Blockleys are a copy of the Dunlop Vintage Racers, the Excelsiors are copies of the Englebert 1930's race tyres but using modern carcass materials and butyl rubber compounds, for better wet grip. 

Wilson

PS An original car not a replica but as Hector says a Bugatti - now which model and year

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Not a 35, 37 or 39, which is what I thought most would guess. It is a very subtle point but you can just detect that the gearbox top is a bit larger than the gearbox of the aforementioned cars would have been. The larger gearbox is often fitted to modern type 2.3L 35B race cars, as nowadays, fettling has resulted in these engines making around 200 BHP. The teeth on Bugatti gearboxes are very fine pitch, which is what makes them very difficult to achieve silent gear-changes, and this also makes them somewhat fragile and susceptible to rough handling damage. On a vintage Bentley, I can make silent gear-changes virtually every time, even from a freezing cold box, with oil like treacle, to a very hot box, with thin oil. On a Bugatti, I consider I am doing very well if I get anywhere near to half my changes without a crunch and none at all with a cold gearbox. 

Wilson

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Ronald, 

I suspect this 51 which is owned by Bugatti themselves may be a "bitza" made from bits of this and bits of that. It has a 51 radiator, dual fillers on the back deck, big gearbox and twin cam engine but as you say, the dashboard looked more 35. A friend made a complete type 35C, starting with just an original back axle and engine block.  I suggested to Bugatti, having had a good look over the 51, that the brake cables were changed before it was next driven, as I certainly would not drive it with the brake cables in their current condition. The cable lay was coming unwound in places and they were kinked in other places. If one brake cable goes, you lose most of your brakes on a 51, due to the chain compensators and the brakes on a 51 are bad enough, even when working properly. 

Wilson

 

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Ronald,

Like many valuable old cars, more are created every day. I just saw that Vanwall are being permitted to build 6 continuation 2.5L F1 cars at £1.6 million each. I presume the FIA and FIVA are laughing all the way to the bank with the historic certificate registration fees. I don't approve of this at all, except for recreation of a viable car when no roadworthy/track-worthy originals remain. A friend built the first recreation Lancia D50 pannier tank F1 car because at the time, in the mid 1990's, there were no race-able Lancia D50s but only ones changed to Ferrari D50 spec. My friend had found an original Lancia 2.5L V8 4 cam engine plus a whole lot more original spare parts and re-created the rest, after years of research. I feel that it isn't correct building a brand new car and then winning races against people driving original cars.

I know we go to great lengths (and expense) to make our cars as original as possible and repair worn or broken items rather than replace. I was complaining to a friend about the cost of rebuilding my 1977 911 RSR's 915 gearbox, which has to be done about every 8000 miles, as it was only designed for 150 BHP and 180 Nm from a carbureted 2 litre engine not 300 BHP and 370 Nm from a fuel injected 3.3L. The friend asked why I didn't fit the later Getrag G50 gearbox and my answer was that it just would not be in the spirit of a historic rally car of that period.

Wilson

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Curious which vehicle we have here, maker and model please.

 

 

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