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In this section we'll reveal some info about our engine tuner, LuFo (Luís Fonseca). Luís Fonseca began his engine odissey in Mozambique with 16 years old, almost 40 years of engine tuning experience in National GP championships and trophies.

An engine tuner, with very extensive experience and trophies in the preparation and modification of 2-Stroke engines

Therefore, for beyond a spare parts mechanic, the 2-Stroke engines don't have secrets for him, what increased to all its manual and intellectual capacity, make of it an unique figure and an election tuner, a true genious or, ironicaly, the "Einstein of the 2-Stroke" - Made in Portugal.
40 YEARS OF ENGINES - engine tuning and Competition, that allowed him to know the characteristics of the 2-Stroke engines of high competition (GP), since old times (George Muller, etc) until the modern times, passing for the force of the Italian and Japanese industry.

Of this experience, he perceived the reasons for which they manufactured and conceived the things in definitive way, and learned, understood, and with base in that, he was capitalizing that knowledge.

Of those bases, he created his own proper doctrine in the 2-Stroke engine tuning, in a mix between GP engines and his proper philosophy of tuning.

Great manual and intelectual capacity.
Determination and persistence, never giving up an objective.
Fame, charisma and given tests (the Great Workmanship....), that innumerable customers and possibility brought it to explore sufficiently some types of engines, distinct marks, etc, and with this to enrich its capital of knowledge - the virtuous cycle of the success.....
Belief and passion for the engine tuning & mechanics.
Spirit of sacrifice and mission - discipline.

Rotary Valve Sachs
Sachs 80 Rotary Valve
Honda RS 125 GP
Honda RS 125 GP

This position is proven by its extensive registers, calculations and notations, carried through each time he conceives an engine modification - the use of mathematical knowledge and physics for the definition of the parameters to apply in the game "exhaust-cylinder", is something worthy of manufacter Engineering Mechanics in the Competition, but that in Portugal can be testified in the humble workshop of LUFO Racing in the fertile valley of Sintra (R. dos Malmequeres).

It's about the mix between the Hand-Made work and the total understanding of functioning of an engine, that allows to feel the engine and to perceive where in the reality it inhabits the cause/origin of one definitive effect - the DOMAIN Of the ENGINE.

We call the attention for the abissal difference that exists between the substitution/assembly mechanic and the conception and development of engines (the true engine tuner), for the infinity of restrictions and implications of factors, that become this task an highly complex task.

For this reason, we must perceive a little the difficult task of the plants, that although they have to its disposal all the machinery and workers, is collated daily with so complex problems that defy the limits of the knowledge, always in geometric progression.

 
Cagiva Mito 125 Rotary Valve
Cagiva Mito 125 Rotary Valve
Kreidler Van Veen
Kreidler Van Veen
Cagiva Mito 125
Yamaha TZR 50 Reverse Cylinder
Yamaha TZR 50
Honda RS 125 GP Rotary Valve
Honda RS 125 Rotary Valve
Honda CR 500
Honda CR 500
Aprilia RS 250
Yamaha RD 500 V4
Metrakit 70 MiniGP
Yamaha TZR 50 Trophy
Yamaha TZR 50 Trophy

LuFo is the biggest Portuguese 2-Stroke specialist with proven tests given in the achievement of the maximum power of a certain 2-Stroke engine, objective that we know that it is not determinative for the victory in a circuit, but that it is very entusiastic. We know that this objective is the prescription for the attainment of the maximum acceleration and real top speed in a direct passage, if the engine will be endowed with an appropriate close ratio gearbox.

CURRICULUM VITAE
Name: Luís Manuel de Oliveira Fonseca (LUFO Racing)
Born in: Caxarias/Ourém/Portugal ....1948
Lived in Mozambique between 19... - 19...
Creator of the JA 125 motorcycle, conceived in the era when he was the responsable/workshop chief of J.AMORIM in Sintra . Production of hundreds of this model, conceived by himself.
Tuned Kreidler Van Veen 50 cm3 with rotary valve, 16 500 rpm etc.
Conception, modification and development of many automobiles - chassis, 4-Stroke engines with deep engine modifications, turbo instalation on NA engines, forged pistons distinct from the original ones.
Large experience in the modification of standard 2-Stroke engines (trail, motocross, enduro) into great GP performances (GP tuning, not motocross/enduro tuning)
Musician.
Great smoker.

LUFO's 2-STROKE ENGINE KNOW-HOW AREAS:
Electrics (electric part, wiring circuits)
Electronics (hand-made CDI units, variable curves, ignition timings)
Cylinders (porting, reshape, angles, areas, volumes, exhaust & transfer timing)
Cylinder heads (squish band angles, combustion chamber volumes, corrected compression ratio measures)
Intakes (corrected volumes, reshape, rotary valve transformations on reed engines)
Exhausts (hand-made exhausts using specific mathematical formulas with a GP philosophy within)
Carburetors (correction of the carburation, depending on the given use and altitude) 
Deep knowledge of the 2-Stroke engine functioning, can tune any kind of 2-Stroke engine, from 50cc to 500cc, even if it is a monocylinder or a tetracylinder proven by the different RacingSM prototypes .
Frequent studies about new theories adjacent to 2-Stroke engines, since exhaust till cylinder and electronics.
Gearboxes (knows how to use the correct gear ratios depending on the given use/track)

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