1938 Maserati 8CTF


1938 Maserati 8CTF

1938 Maserati 8CTF

Gone was the ridiculous maximum weight of 750 kg that F1 had, replaced instead by a minimum weight depending on displacement, with a maximum of 3 litres for blown and 4.5 for naturally aspirated engines. Given their long experience with Superchargers, it was no surprise that the brothers opted for the former.

The result was doubling in horsepower. The CTF was the first european car to take consecutive wins at the indianapolis 500.

The engines’ main feature was in having an independent power supply group for each set of four cylinders and two compressors type Roots superchargers. Like that twin-cam engine, the 3 litre ‘eight’ used a fixed cylinder head or ‘testa fissa’, which also explains the 8CTF type indication. In fact the new eight cylinder engine was not too dissimilar to the ‘four’ used in the final versions of the 4CM 1500 voiturette car. It was basically built from 2 inline-4 engines lined up.

It initially had over 350 bhp and after successive improvements was good for at least 365 bhp.

The Maserati 8CTF was finished off with an aluminium body similar to that of the 6CM, with a longer nose required by the larger engine.

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1938 Maserati 8CTF

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1938 Maserati 8CTF In Detail

submitted by Richard Owen
engine Twin Supercharged Inline-8
valvetrain DOHC 2 Valves / Cyl
displacement 2992 cc / 182.6 in³
bore 69 mm / 2.72 in
stroke 100 mm / 3.94 in
power 261.0 kw / 350.0 bhp @ 6000 rpm
specific output 116.98 bhp per litre
bhp/weight bhp per tonne
body / frame Aluminum
driven wheels Front Engine / RWD
front brakes Hydraulic Drums
f brake size mm / in
rear brakes Hydraulic Drums
r brake size mm / in
front wheels F 48.3 x 8.3 cm / 19.0 x 3.3 in
rear wheels R 48.3 x 10.2 cm / 19.0 x 4.0 in
steering Worm & Sector
curb weight 780 kg / 1720 lbs
wheelbase 2723 mm / 107.2 in
front track 1359 mm / 53.5 in
rear track 1359 mm / 53.5 in
length 4100 mm / 161.4 in
width 1520 mm / 59.8 in
height 1100 mm / 43.3 in
transmission 4-Speed Manual
gear ratios :1
top speed ~289.7 kph / 180.0 mph