A proper squish clearance can give your motor 10% more power. Most aftermarket cylinder kits are not made to this close tolerance of 0.6-0.8mm proper piston clearance. We check the squish band clearance and usually have to close the gap from .18 -.13mm down to .8mm gap for proper squish band function to work properly.
TWO-STROKE REED VALVE EXPLAINED
The reed valve is very important for a high perfomance DIO engine. It must
work correctly at idle and at 10,000 rpms. The valve material is of great
concern when building these engines.
DIO Piston Install TIPS
These are some tips on installing or taking off your two stroke pistons
from the crankshaft. Always keep the parts clean and take your time and do
the job right. Remember that the piston always goes on with the arrow on
the piston crown, pointed towards the Exhaust port. Put your rings back on or take
them off with a piston ring expander. Rings are very brittle and can snap
in half, very easily. Line the rings up with the single ring pin in each
slot. Oil the rings and cylinder walls with two stroker oil and carefully
lower the cylinder onto the piston. Use a new base gasket , scraping off
the old one. When changing or working with the cylinder off, stuff the
crankcase around the crank rod to stop foreign debris from entering and
fallin in the crank well. Use a new head gasket every time and torque the
head bolts in a cross-hatch pattern to avoid warping the aluminum head.
Take your spark plug and screw it into the head before installing to make
sure the plug sits flush with the top of the cylinder head chamber.
DIO 54mm Piston Clearance TIPS
Small aluminum corners have been removed and piston has full un-opposed
travel throughout its 360 degree range. Cylinder deck height will me
measured and fitted next.
TWO STROKE REED VALVE DYNAMICS
This video is for Scott, my GOOD MATE down under. I explain further my take
on reed valve operations and why they are so important for high performance
DIO or JOG engines.
ScooterNations - Fitting A 70cc Cylinder Kit/Big Bore Kit
scooternations.com is the fastest growing and the friendliest scooter forum
on the net, we welcome everyone.
Fitting A 70cc Cylinder Kit/Big Bore Kit
Also removing a 50cc kit, tips on the crank and torquing up also!
Easy to follow!
For more info!
Check out the forum!
How to install pistonrings on a twostroke
Here I mount piston rings on a piston to a Speedfight 100cc and 50cc.
Surf to http://www.twostroke.se if you need new piston
Some hints, tricks and other things you should know at piston replacement:
Things to consider when installing an aftermarket Piston, is that you very
carefully to make sure it is identical with the piston as it is ordered in
the dimensions of the piston pin, both upwards and downwards, this so that
it can not turn the crank, push or hit the top when it rotates in the
Compare with your old piston before installation.
One must also carefully check every holes on the piston rings ports so that
they do not go over any channel in the cylinder, then the chances are that
the ruling in this case, sticking and breakage, leading to the cutting
cylinder. The arrow on the piston is at assembly towards the Exhaust port.
Choosing the piston:
B-piston recommend it for all used cylinders.
A piston for new cylinders or cylinders with new nicasil.
A B piston is slightly larger than an A piston in order to compensate for
wear. C piston is greater than B-piston etc..
Here you can see when I change the cylinder
Montaje de segmentos de pistón - Motor Service Group
Technical Podcasts - Comunicación de conocimientos por vídeo
- en nuestros podcasts de vídeo encontrará indicaciones prácticas para
el montaje y aclaraciones sistemáticas sobre nuestros productos
Durante el montaje de segmentos de pistón se pueden cometer muchos
errores. Le mostramos los puntos más importantes a tener en cuenta.
Pro Circuit Engine Porting
An inside look into the Head Modification service offered by Pro Circuit.
There is a fine line to building an engine. If limits are pushed too far
there are reliability issues. Pro Circuit's goal is to give you the very
best in high-performance service without any loss of reliability. Pro
Circuit engine modifications will give you increased from bottom to top.
For more info and pricing (in New Zealand) on 2 or 4 stroke engine work by
Pro Circuit please contact Crown Kiwi Enterprises Ltd. Ph: 06-751 4550
Pro Circuit products are proudly imported & distributed in New Zealand by
Crown Kiwi Enterprises Ltd.
Video courtesy of Pro Circuit Inc.
2 stroke transfer ports information, along with porting and polishing tips
Information about the transfer ports on 2 stroke engines. An explanation of
the how the transfer ports on a 2 stroke cylinder work, along with tips for
porting 2 stroke transfer ports. 2 stroke transfer port timing and
trajectory are critical to power production results.
brought to you by CC Specialty Tools, world leader in porting and polishing
motor bike 6 cylinders : incredible sound by Guy Coulon
invité par Guy Coulon dans son atelier de GP Tech 3.
Une rencontre inoubliable d'un ingénieur et d'un génie, d'une simplicité
Il nous a fait l'honneur de démarrer son chef d'oeuvre : un proto 6
cylindres de 300 cc, fait entièrement à la main. Magnifique ! avec un son
Europ'Touring BMW Motorrad
Maxxess Arras Accessoires motos et occasions