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Author _ Katman | Created_ June
2005 | Last Update_ June 2005
SYNOPSIS
Like the B-series LSD Check! article, this article shows a few examples of how
to check D-series cable and hydro
transmissions for a factory Limited Slip Differential aka LSD. I haven't come across too many factory D-series LSD tranny's in the past, so
this article is going to run short on information.
For those that can help, please contact
me if you have access to rare factory LSD D-series transmissions so that I may show expose information
on them here.
HYDRO
D15B
AUTO D-SERIES
TRANNY
LSD CHECK
:
A friend of mine snapped these to images below, but this is the first time I've
seen this
- an AUTO
D15B transmission
from a
JDM EG front
clip:
(Click
on the thumbnail)
 
- Check the differential hole...
I
assume LSD's for D-series have the same characteristics
as B-series. So you should be able to simply
look through the differential hole routine.
If you see that the diff hole is totally hollow (as
shown below), with no obstruction in the way,
the tranny IS LSD equipped.
If the diff hole is not hollow and
has a bar through
the middle,
the tranny has
a
stock
differential.
(Click on thumbnail)
HYDRO D-SERIES 5-SPEED TRANNY LSD CHECK :
No info that this time...
- Check
for the "LSD" ink stamp...
This
is really easy to indentify.
Simply look
on the front section of the 'mission
casing for this ink "LSD" stamp:
(Click
on thumbnail)
NOTE: This ink stamp can easily be rubbed or cleaned off,
which again, brings
us to example #2..
- Check the differential hole...
I
assume LSD's for D-series have the same characteristics
as B-series. So you should be able to simply
look through the differential hole routine.
If you see that the diff hole is totally hollow (as
shown below), with no obstruction in the way, the tranny IS LSD equipped.
If the diff hole is not hollow and
has a bar through the middle, the tranny has a stock differential.
(Click on thumbnail)
Peeking through the diff whole is thee best way to check
a transmission for LSD, while the tranny is off the car of course!
ADDITIONAL INFORMATION
N/A at this time...
- Gear
Type LSD
Gear type LSD's have gears inside of them (duh!) that mesh together when load
is detected. This type is good to have because you'll probably never have to
replace worn internal LSD parts, unlike the clutch type. The downside, especially
for stock Type-R LSD's, is that they can internally break if your into rough
circut racing. Lifting a front wheel in a turn and landing back on it is how
the LSD can break. Real stiff suspension is a major factor in making a car lift
during a
high speed turn - so be careful!
- Clutch Type LSD
Clutch type LSD's have small clutches inside that engage when load is being
detected. Clutch type LSD's won't break if you happen to lift
a wheel, unlike gea type. The only real downside to the clutch type is the
wearing of clutches over time. Just like
the clutch disc inside of your tranny, the clutches inside this LSD wear
out too, and need replacement/servicing.
- Viscous Type LSD (rare)
Viscous Type are similar to the viscous LSD's
used in some AWD vehicles. The way these
work is that a special fluid is used in
the differential which THICKENS when excessive
slip is induced. Stators and impellors
in the diff make this even more efficient.
Although, there is a slight delay in the
locking of the differential. This LSD
type work very well
and last a long time but cost maad loot.
According to my resources, this was a
special
order LSD for JDM 96-97 ITR integra's
only. No other countries would receive this
optional LSD, only Japan. The cost was about
twice as much as a the common gear type LSD.
One odd thing though, Honda of Japan does
NOT have this optional
LSD type for 98+ Integra-R's!
The information in this article applies
to:
- D-series
cable
& hydro transmissions
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