For contact information, visit www.improvedracing.com
Copyright © 2008-2014 Improved Racing Products, LLC. All rights reserved.
For contact information, visit www.improvedracing.com
Copyright © 2008-2014 Improved Racing Products, LLC. All rights reserved.
2
3
checking carefully for interference between the crankshaft and the
crank scraper. If any interference is observed, return to Step 6 and
adjust as necessary.
Warning:
Be absolutely sure no physical contact occurs between
the crankshaft and the crank scraper as this will result in severe
engine damage.
9. Optional but recommended: Clean the oil pan thoroughly to remove
any oil residue and sludge buildup.
10. Optional but recommended: Replace the oil pan gasket and pickup
tube O-ring with new components.
11. Reinstall the oil pickup tube, taking extra care to ensure the O-ring is
correctly seated during installation, as failure to do so can lead to en-
gine failure. Torque the pickup tube to oil pump bolt to 106 lb-in (8-9
lb-ft). Torque the pickup tube bracket to windage tray nut to 18 lb-ft.
12. Refer to the instructions in the vehicle’s factory service manual to
reinstall the oil pan.
13.
Replace the oil filter, tighten the drain plug and refill the sump with oil
to the factory-recommended level.
Congratulations! Installation is now complete. You can now benefit from
improved oil control and a typical power gain of 2-4 horsepower at the
wheels.
Applications
This product is designed for direct installation in the following engines, in
their factory configuration (stock crank and rods, 3.622” (92 mm) stroke):
•
LS1 / LS6
•
LS2 / L77 / L98
•
LS3 / L99
•
LS9 / LSA
•
Gen III Vortec 5300 (LM7 / L59 / LM4 / L33)
•
Gen IV Vortec 5300 (LH6 / LY5 / LMG / LC9 / LH8)
•
Gen III Vortec 6000 (LQ4 / LQ9)
•
Gen IV Vortec 6000 (LY6 / L76 / LFA / LZ1)
•
Gen IV Vortec 6200 (L92)
Installation Instructions
Warning:
This product should only be installed by a qualified me
-
chanic. Improper installation could result in severe engine damage.
1.
Drain the engine oil and remove the oil filter.
2. Refer to the instructions in the vehicle’s factory service manual to
remove the oil pan.
3. Unbolt the oil pickup tube and set aside.
4. Unbolt the windage tray and set aside.
5. Secure the crank scraper to the main caps using the windage tray
nuts temporarily to check clearances.
Important:
Note the correct windage tray orientation. The arrow
should be pointing towards the front (accessory drive) of the engine
and the text should face down (readable when crank scraper is se-
cured to engine).
6. Use a wrench to slowly turn the crankshaft manually while check-
ing carefully for interference between the crankshaft and the crank
scraper. If any interference is observed, adjust the crank scraper’s
position to eliminate the interference. In rare instances it may be
necessary to use a hand file to remove some material from the crank
scraper to eliminate interference. Ideally, there should be between
0.020” to 0.060” of clearance between the crank scraper and the
crankshaft.
7. Note the position of the crank scraper. Remove the windage tray
nuts, position the windage tray over the crank scraper, and secure
with the windage tray nuts. Torque to 18 lb-ft.
8. Once again, use a wrench to turn the crankshaft manually while
