Two-stroke engine research and development

Two-stroke engines, designed and built

From the CAD drawing to the casting in iron or aluminum, all the way to the dyno run.

Get in touch The book Courses
C.60 cylinder · from drawing to casting
Cover of the Italian edition: La Fisica del Due Tempi, by Daniele Pinti

The book

The Physics of the Two-Stroke

How it works, how it breathes, how to tune it

English edition coming soon.

Thirty years of workshop, foundry and dyno in one technical manual: expansion chambers, port timing and time-area, jetting, ignition advance, squish, detonation, reed valves, cylinder casting and dyno testing, with real curves from the Pinti Motori archive.

490 pages · 102 technical figures · 53 photographs

About the book Tell me when it's out Italian edition out November 24, 2026

New · coming soon

Two-stroke courses

Thirty years in the workshop, explained with method.

The reason behind every choice, backed by dyno numbers.

01

Two-stroke basics

How a two-stroke engine works and how to improve it.

02

Advanced two-stroke course

In-depth mechanics, tuning and dyno testing.

03

Building a two-stroke engine

From CAD design to the finished engine.

Tell me when they start

Dates and programme in preparation. Leave your contact and I'll let you know: no obligation.

My work

From drawing to part

How an engine is born: from the drawing to CAD to the casting, all the way to the dyno.

01

CAD design

Cylinders, ports, transfers, exhausts and cylinder heads drawn from scratch, with port timing and port areas worked out for how the engine will be used.

02

Castings

Molds and cores for pouring cylinders and parts in cast iron and aluminum.

03

Complete engines

Two-stroke engines and cylinders for scooters, motorcycles, karts, motocross and classic bikes.

04

Dyno testing

Power and torque curves on the dyno, before and after every change.

05

Brake systems

Brake discs designed in CAD and laser cut.

Completed projects

Cylinder in horizontal section: the transfer passages Cylinder as cast Cylinder head and cylinder, exploded view, CAD design Cast cylinder seen from above: bore and transfer ports Brake system: laser-cut wave disc Cylinder in vertical section: exhaust and intake Two cylinders, cast and machined Cores for the passages, CAD design Inside the bore: the transfer port windows Technical drawing: plan view of the transfers Cylinder as cast, side view Cylinder in section, CAD design Printed patterns and a cast cylinder Mold with its cores, CAD design Brake system: laser-cut brake disc Cylinder head from below: the combustion chamber Molds and cores ready for the pour Technical drawing: vertical section of the cylinder Machined cylinder head Cores for the transfers and the exhaust port The two halves of a mold Technical drawing: unwrapped port map Cone of an expansion chamber

Dyno

I call it the Wailing Wall.

Every engine ends up on the roller. The dyno measures the roller's speed and its acceleration and works out torque and power from them: no opinions, only curves.

Alongside: one engine on the same day, before and after tuning. From 36.6 to 39.8 PS (36.1 to 39.2 hp).

Power and torque curves before and after tuning, Pinti Motori dyno
Chart labels are in Italian. Prima = before, dopo = after, potenza alla ruota (CV) = wheel power (PS), coppia = torque, giri/min = rpm. Real data from the Pinti Motori dyno archive.

About

Daniele Pinti on the Pinti Motori dyno
“The truth always has a number.”

Daniele Pinti, two-stroke engine designer and builder.

I started at eleven, getting an old Benelli running again when everyone had written it off. I have never stopped since. Today, after more than thirty years of workshop, foundry and dyno, I follow every engine from the first drawing to the last dyno run.

I draw cylinders and cylinder heads in CAD, make the patterns and cores for the foundry, cast in iron and aluminum, and check every result on my own dyno. Every change gets measured, because on the dyno “the truth always has a number.”

Contact