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.
Many of you have seen this one before. I apologize if bringing it back
Domestickilla gave me a crankshaft, and it's a nice one that I want to
clean up and use again. You'll be seeing a lot of it and because of this,
this video deserves to be here. I fixed what I broke, and this was my
In this video Ballos Precision Machine demonstrates magnetic dye penetrant
testing, crankshaft polishing and inspecting the balance of a "butchered"
4g63 6-bolt crankshaft.
How to polish a crank ( crankshaft )
Engine-Guru.com Presents a video on how to polish your crank shaft. Any
questions call 616-430-3114 ask for KYLE.
We are located out of Grand Rapids, Michigan.
Blueprint 104 - The Crankshaft
It's important to know what you've got even before dealing with the
machinist. If you want to inspect a crankshaft, this is how you do it. I
detail the process of removing the crank and what to measure. All
specifications in this video are illustrated with a 6-bolt 4g63 turbo block, but are all actually the same for
7-bolt engines with the exception of the rod widths.
Yamaha YZF R1 crossplane crankshaft technology explained
The crossplane or cross-plane is a crankshaft design for V8 engines with a
90° angle between the cylinder banks. The crossplane crankshaft is the
configuration used in most V8 road cars.3d model of a cross-plane
crankshaft demonstrating the 90 degree angle between the crank throws and
the large counter weights.The crossplane crankshaft has four crankpins,
each offset at 90° from the adjacent crankpins. The first and last of the
four crank pins are at 180° with respect to each other as are the second
and third, with each pair at 90° to the other, so that viewed from the end
the crankshaft forms a cross. The crankpins are therefore in two planes
crossed at 90°, hence the name crossplane. A crossplane crank may have up
to five main bearings, and usually does, as well as large balancing
weights. Crossplane V8 engines have uneven firing patterns within each
cylinder bank, producing a distinctive burble in the Exhaust note, but an even firing pattern
overall. Their second-order balance, owing to the 90° bank angle and 90°
throws, means no additional balance shaft is necessary to achieve greater
smoothness. Without the 90° bank angle, a balance shaft may be required.
The other prominent design for a V8 crankshaft is the flatplane crankshaft,
with all crankpins in the same plane and the only offset 180°. Early V8
engines, modern racing engines and some others used or use the flatplane
crankshaft, which is similar to that used in a straight four or flat-four
engine. Flatplane V8 engines may use any angle between the cylinder banks,
with 60° and 90° the most common. They lack the V8 burble and the
superior mechanical balance of the crossplane design, but do not require
the large crankshaft balancing weights. Inherent balance of the big ends is
like a straight four, and modern designs often incorporate a balance shaft
for smoothness. But without balance shafts, flatplane designs have the
least flywheel effect of any V8s, which allows them to be more
The crossplane design was first proposed in 1915, and developed by Cadillac
and Peerless, both of whom produced flatplane V8s before introducing the
crossplane design. Cadillac introduced the first crossplane in 1923, with
Peerless following in 1924.
Inline-4 engines can also use the crossplane concept. The 2009 Yamaha
YZF-R1 motorcycle uses the crossplane crankshaft and, in the absence of the
90° bank angle of the V8, must use a separate balance shaft geared off the
crankshaft to eliminate the inherent vibration (a primary rocking couple)
found in this type of crank.
A crossplane crank has been used in Yamaha's M1 MotoGP racing models in the
past. Yamaha claims advances in metal forging technologies make this a
practical consumer product.
Installing main bearings in a Vespa engine
I haven't seen anybody use this method yet. I am too impatient to put
things in the freezer overnight and don't like feeling like I'm in a race
against time to keep the bearing cold. This method obviously works quickly
and easily if you're careful. Playing with a torch and liquid CO2 is
obviously dangerous. Both can cause you quite a bit of pain if you're
Motorcycle Wheel Bearing Replacement
Learn the easy way to replace the old worn out wheel bearings on your
motorcycle! In this video we walk you through each step of properly
replacing the wheel bearings on a motorcycle. Using the correct tools for
the job is key to making it go smoothly and Rocky Mountain ATV/MC carries
all the tools and parts to make this job quick and painless. In this video
we'll be demonstrating this process using the Tusk Bearing Remover.
Checking to see if your wheel bearings are worn out or bad is simple. Just
suspend the tire/ wheel off the ground and pull the tire to each side. If
you feel and side to side play or see any movement in the bearings you know
it's time to replace them. Save yourself some money by replacing these
bearings yourself! Rocky Mountain ATV/MC has plenty of bearing & seal kit
for you to choose from including All Balls, Pivot Works, and Bearing
Connections. Pick up your new set of wheel bearings today @
Click Here Visit Our Website!
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Motorcycle Bottom End Rebuild Part 3 (of 3) Final Assembly
medium=BottomEndRebuild&utm_campaign=Youtubevideos - How-to disassemble and
rebuild the crankshaft and transmission on a modern 2-stroke motocross
motorcycle or ATV engine. This is Part 3 of this 3 part engine rebuild
series from Rocky Mountain ATV/MC. In this video we cover installing the
transmission into the case halve and then applying gasket maker onto the
sealing surfaces. Also installing the other case halve and sealing
everything up finishing the crank and bearing replacement on this engine.
Get all the parts and tools needed for this complete engine rebuild @
Click Here For Part 1 (Flywheel, Stator & Clutch Removal)
Click Here For Part 2 (Splitting Cases, Crank & Transmission Removal, Crank
& Bearing Installation)
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