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SR20 (DE, DET, etc.)
Note: If you have a SR16VE or SR20VE, SR20VET
-- skip the section below discussing the girdle unless you
plan on adding the factory girdle to your engine.
There are a number of options for the SR20
engine but the very first thing you must
determine is whether your engine has a narrow or wide block.
The narrow block was designed first and is used
in a number of applications. If the vehicle you obtained the
engine from has AWD then it is almost certain you have a narrow
block -- the narrow block allows greater room for the transaxle.
Here are some pictures to help you determine
what block you have; click on the pictures to make them larger:
Narrow:
Wide:
Below are some oil pan pictures. Do not
pay attention to the lower steel part and do not expect your pan to
look exactly like any of the pans -- look at the upper alloy
section that bolts to the engine block itself. You can see
that the one on the right is visibly narrower than the one in the
middle and left:
Now, in both the narrow or wide engines
it is possible to have a crank scraper with directional screening
windage tray that bolts into the girdle.
Both layers
nestle within the existing main bearing girdle and attach to the
existing mounting points for the factory louvered pan baffles.
The layer closest to the rotating assembly has two scraper louvers
for each of the first three piston bays. They are chisel edged
with the second larger louvers being relief cut so that it follows
the contour of the factory rods and counterweights (other rods can
simply be adjusted for by grinding). The louvers can be bent
down or up to get very close tolerance fits. The last piston
bay has a single louver that is bolted to the scraper. It is
made to be removable so that it can be more easily adjusted.
This part
costs $109.95.
Here are
some pictures:
The picture
below shows the scraper and tray from the interior of the girdle.
From the top ...
Underneath ...
There is an
option with the girdle scraper ...
The flow of
air in the fourth piston bay is highly obstructed by a cylindrical
indentation in the stock sump. This indentation is designed to
allow access to torque converter bolts. It is highly
desirable to remove this inward facing bulge if you are running a
manual transmission. This means you will have to take
the sump into a welding shop that is experienced with working on
automobile parts this large.
Bulge:
Example of a removed bulge:
If you decide
to do this modification we can supply you with a precut piece of
aluminum that will assist the shop and we can expand the scraper and
windage tray screening to cover this area. This would
add
$35.00 to the cost of the girdle scraper and windage screen.
Here are
pictures of the resulting parts:
This picture shows the screening and scraper without the relieved
openings for a pickup tube -- this is for a dry sump setup or for
those variations of the engine that have the pickup support strut
attached to the side of the girdle rather than the interior.
If you are unsure where your pickup strut mounts then simply order
the standard version.
If you have
any questions about your application -- please ask.
The next
option for the SR20 engines is again for both the wide and narrow
versions. This option is designed to work with the girdle
scraper and tray.
The baffles above serve to direct draining oil from the head
away from the rotating assembly and to more smoothly guide windage past the
girdle arms. There is a crank scraper for the rod area incorporated into
the baffle. The frame mounts on top of the main bearing caps underneath
the girdle.
On wide blocks there is another scraper present on the
mounting frame. This scraper can be made into a TeflonŽ version if so
desired. Baffle assembly $399.95; add $100 for TeflonŽ if you have a wide
block.
Teflon version for wide block
If you do not want the
baffle assembly AND you have a wide block
then it is possible to get a steel
scraper ($69.95) or a Teflon bladed scraper ($169.95) alone.
These scrapers are ideal for the VE versions of the motor which have
a wide block and no girdle.
Steel scraper for wide block
Teflon scraper for wide block
We also have versions of
this scraper
for knife-edged cranks. Please enquire for more information.
Here is an example:
Here are some pictures of an SR20VE Teflon
scraper with baffles:
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