Crankshaft Balancing Counter Weight Reduction
This big block Chevy engine is getting a trim job on the crankshaft counter
weights because we are installing some .400" longer connecting rods with
some very light forgerd pistons. We had to remove a total of 400 grams to
get the crankshaft to balance correctly. Costa Mesa R&D Automotive Machine
Shop (949) 631-6376 Don't forget to 'Click' and SUBSCRIBE and tell your
friends about this channel.
VW Drag Racing Piston Lightening
Follow along as John Edwards @ Costa Mesa R&D lightens a set of forged
pistons for Robert Kong's hot Karmen-Ghia drag machine.
Subaru Sleeve Installation
Another race prep modification that is performed by John @ Costa Mesa R&D
Automotive Machine is to install a set of ductile iron sleeves in the
Subaru engine. Check out how its done. www.engine-machining.com (949)
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.
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.
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.
Static crank balance
Testing static crank balance on a Honda CR 500 after some balancing is
done. The steel bar replacing the piston does weigh 54% of piston.
Crankshaft grinding Eagle 4340 Forged SBC Crank
CPMotorworks, Inc of Janesville Wi shows what is needed to repair poorly
ground journals of an aftermarket crankshaft. We were able to remove .002"
from these main journals to correct the hourglass shaped journals that were
the result of a poorly dressed grinding wheel and over-polishing.
Con Rod Mods-01.wmv
Here's another connecting rod modification that John Edwards of Costa Mesa
R&D Automotive Machine performs to reduce reciprocating weight.
www.engine-machining.com (949) 631-6376
Balancing a Jaguar E Type crank at Classic Jaguar in Austin, Texas
6-bolt 4g63 Crankshaft Chamfer & Oil Clearances
These are some things you need to think about during your build. Some
engines don't have any chamfer on oiled journals whatsoever. All equipment
like that can benefit from at least a light chamfer like the one that's on
a stock Mitsubishi crank shown in this video.
When you Chamfer an oil passage, you create a low-pressure zone where the
edges of the oil passage lift away from the bearing as it passes over it.
The principles of fluid dynamics dictate that if there wasn't an available
substance to displace that low pressure zone (in this scenario, there is an
oil supply), cavitation might occur. If we were talking about
aerodynamics, the effect would be lift.
An extremely-advanced or leading chamfer is actually capable of sucking oil
off of a flat bearing, whereas a trailing chamfer vacuums oil out of a
gallery and does a better job of spreading it around.
The modification that was performed here is intended to increase oil flow
to the mains and the rods. It's mentioned in the video that I'm setting up
my rod oil clearances on the looser side of spec. This will decrease block
oil pressure because more oil will be able to leak past the fillets of the
crankshaft and back to the pan.
But there's another modification being performed. A balance shaft
elimination. There will be lots of debate about this in the coming videos
as that transpires, but one of the side-affects of doing a BSE is increased
oil pressure. With several internal oil holes plugged off inside the
block, I will have a spike in oil pressure. I had my chamfers cut straight
in order to offer the largest practical surface area to apply oil to the
mains and rods. My intention is to relieve some of this oil flow that
doesn't have anywhere else to go. With the added flow, the straight
chamfer is actually beneficial to the mains, allowing them to intake more
oil as well as to spread more of it on the flats below the grooved upper
The animations illustrate this completely. They were created by
yours-truly. I know the oil hole on the mains is on the wrong side. It
was too much work to fix, but they get the point across. Don't laugh at
them any harder than I did.
D-16 Honda Block Modification
See how to modify your Honda engine when you install H-Beam connecting
rods. Brought to you by Costa Mesa R&D Automotive Machine.
www.engine-machining.com (949) 631-6376
SBC Valve Guide Installation
John @ Costa Mesa R&D Automotive Machine describes how to replace valve
guides on the popular small block Chevrolet cylinder head.