Piston ring end gap is and important measurement to verify during engine assembly. Do this to ensure that the ring ends won't butt during engine operation and damage the cylinders. Also keeps cylinder pressures more consistent from bore to bore which means better effiiciency and power.
Fitting of piston rings - Motor Service Group
Knowledge transfer via video
- our video podcasts provide you with useful information on our products,
such as hands-on fitting instructions and system descriptions.
The mounting of piston rings bears a lot of potential for mistakes.
We show you the most important points that need to be considered.
Engine Exterior Cleaning
Cleaning the exterior of my engine block with citrus degreaser and aluminum
brush. Scrubbing away the grime can help detect oil leaks but can also
make them worse. Cleaning is a double-edge sword. It's always best to
bring leaks to the forefront instead of keeping them hidden by grime. My
philosophy is not to hide the leaks but to detect and fix them. Adam
Singer is co-creator of the music track (collaboration).
Blueprint 108 - inspect the deck
There's a reason why there are no subtitled specifications in this video
for the block. It's because they don't exist in either service manual, 1g
or 2g. You're not supposed to remove material from a block on the deck
surface because it has ill effects on parts of the combustion chamber
geometry, and alters your compression ratio. It can be done intentionally
in some cases for a desired side-affect, but if you have to deck a 4g63
head, it would be advised to use a thicker head gasket. The Mitsubishi
Multi-Layered-Steel or MLS gasket is slightly thicker than the OEM
composite gasket. Also, HKS, Power Enterprise, Cometic, and other
performance brands all make MLS gaskets that are .065 and thicker.
THERE IS ONE ERROR IN THE VIDEO. I said a block with .002" warpage is
junk. I was completely and totally wrong. While I don't wish to spread
misinformation, I don't think it's a big enough error to warrant re-editing
this video. I just wasn't paying attention. .002" warpage on a cylinder
head is the service limit before it needs machining. I meant to say
.02"... or two HUNDREDTHS (not thousandths) of an inch.
...and here's my justification...
A warped block to me is junk either way even if its minimal because your
MLS gasket will never seal unless both the head and the block are perfectly
flat. Trust your machine shop to get the values for how much is taken off,
and buy the correct thickness gasket for your machine work.
A factory head gasket (composite) is .051"
The MLS Mitsubishi gasket is available in the stock .051 and a .062"
Cometic makes gaskets up to .072"
There are some brands that go as high as .127", but I'd have thrown both
the block and head away long before then.
How to Check Bearing Clearances Plastigage - Engine Rebuild Do It Yourself (Part One)
DIY engine rebuild. See Part Two:
How to check main and rod bearing clearances.
This is to prevent low oil pressure or seized bearings.
clearance required = .001" - .003" for almost all engines
I ordered the Plastigage wire here. $2.50
http://www.autozone.com/autozone/catalog/accessories (Search Plastigage)
Wiseco Piston Inc. - Proper Circlip Installation
Video demonstration of the proper way to install a CW21 Circlip in a Wiseco
4848M09600 Piston used for a 2004-2005 TRX450R. Incorrect installation of
the clip can result in severe engine damage so using the proper
installation method is very important.
As always, this piston or any components can be purchased directly from us
View other Wiseco videos on our YouTube Channel.
Disclaimer: Wiseco recommends if you are not qualified to perform tasks
associated in any of the videos you see on this channel that you consult
with a professional engine builder for assistance. Important steps could
be eliminated from these videos for brevity, so please use these videos at
a supplement to current knowledge. Wiseco recommends that anything seen in
these instruction videos be done by qualified professionals or that you
have previous experience rebuilding engines. In no event shall Wiseco be
liable for incidental or consequential damages arising out of or in
connection with the methods used in these videos. Consequential damages
shall include, without limitation, loss of use, income or profit, or losses
sustained as the result of injury (including death) to any person or loss
of or damage to property.
Best Piston Installation Technique
this brief video shows you how to correctly install pistons into a sleev
without using excessive force! For people not familier with this type of
piston-ring compressor, it is a tapered sleeve manufactured by wiseco
Blueprint 101 - Using Micrometers, Calipers, & Bore Gauges
If you're going to rebuild an engine, this video is required material.
None of your measurements mean anything if they're not accurate. I
illustrate the calibration and use of 3 major tools needed for taking
measurements, and a brief demonstration of how they work. These are by no
means the ONLY ways to use or calibrate these tools. This is simply the
method I will employ to measure parts in later videos so this instruction
doesn't distract from their intended messages. Even if you're familiar
with these tools, you may find something useful here, or even be able to
correct me and my rusty skills.