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Big Valve Head

For Smart 700cc petrol 450 or 452 (Roadster)

It is recognised in the tuning community that standard heads from German car manufacturers are some of the best in the world, So any amount of porting will give minimal improvements (Less than 6% additional power).

The advantage this head has is it has larger valves. Both valves are 3.5mm bigger diameter. They also come fitted with springs that can take up to a 12mm lift cam. (although fitting a 12mm lift cam may need additional machining on the heads of the pistons). Expected Power gain 14.2%+ (head alone)
.

Availability: 6 coming (But nothing in stock, Yet!)

The graph above shows the Big Valve Head with other upgrades (This graph is from simulation software. See disclaimer)

Contact

Company:
223D Design and Engineering
41 St Georges Road
Torquay
Devon
TQ1 3QY

Email: mike@223d.com

Phone: 44(0)7970108386

Disclaimer

On this website i use outputs graphs from a simulation software. These graphs are for comparison only and should be used in that way. They all assume a standard engine in good mechanical condition and a Turbo that can generate 1.5bar of boost at whatever RPM is shown and at whatever engine load.

"THEY ARE FOR COMPARISON ONLY AND NOT REAL LIFE, THIS IS A SIMULATION ON A COMPUTER"