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.
(3)- Mating the 54mm cylinder to Stroker Crank
This is the tricky part of compressing both rings while trying to manouver
a 4 kilo iron cylinder above them. It does not help with my slightly stiff,
50 year old hands. It should be a snap for you young guys. RH
(1)- Two Stroke Piston Problems
Piston failure happens alot. Knowing what to look for in the damaged parts
can tell you Exactly what went wrong and how to correct it for the future.
This 3 part series explains my take on why and how pistons fail in two
48 cylinder kawasaki, how it works, running after 5 years
UPDATE: Come and see this Guinness World Record holder at the Classic show
in Hoddesdon, 13th July 2014! More details on the show here:
http://hertfordshiresuperbikes.com/classicshow/ and here:
More details and a write up about the bike here:
Our 48 cylinder motorcycle brought back to life!
We got it going again - Note: The "donkey engine is LOUD", so please do
turn the volume down a little.. You can see and hear the 48 running towards
the end of the video.
Blueprint 106 - Cylinder Bore Inspection
We're close to the end of the 100-level series. In this video I show you
how to measure the cylinder bores using 2 different tools. I compare the
results and illustrate what to look for to determine whether or not your
engine is in-spec.
The block I'm using is a 6-bolt turbo
4g63 from early '92. It has 150,000 miles and this video also serves as a
testimony for the durability of Mitsubishi's cast-iron solid-decked Sirius
I engines. This engine will be cut for a new set of pistons, so these
measurements are needed to determine what size pistons I need to get.
.030" is as far overbored as you should ever take a 4g63. Boring larger
than that will take too much off the side clearances between the cylinder
walls and result in compromised strength from hot spots. The only time
you'll ever need to cut a bigger hole is when an imperfection prevents you
from using the pistons you have, or if you're changing to a larger piston.
If you cut the block to its service limit, you have no room to fix an
imperfection should one develop... so it's best to cut as little as you can
get away with. Boring a cylinder .020" over does not significantly
increase its displacement.
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!
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
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.
How to change piston / top end rebuild 2002-2007 Honda Cr 250
Join the FREZ PRODUCTIONS Facebook site!
I`ve got many nice comments for making the "Honda Cr 125 piston / top end
rebuild" movie. In this movie, I show in good detail how to chance the
piston on your two stroke Honda Cr 125.
A similar movie for the Honda Cr250 would be nice, and that's what I have
Hope you like it!
The bike used in this movie is a 2007 Honda Cr250.
Always use the right manual for your bike! The 2002-2007 Honda Cr250 bikes
are very much alike but there are some changes. That's why the right manual
for your year is important.