LsG86

Hey guys I finally got the TB off but I really want to take off the top Air Chamber (the part with the "L" symbol on it) to clean it and replace the 4 gaskets also. You can see in the pics how dirty it is on the inside of the Air chamber. Couple of questions.

1. If I remove the Air chamber, what are the torque spec for the bolts and what pattern do I tighten them?

2. If I remove the Air chamber, what's the best way to clean it? I thought about soaking it in a bucket with dawn dish soap or Landry detergent or even soaking it in a bucket of lacquer paint thinner.
I really need to know the torque spec for the air chamber. Any advice, info, tips is greatly appreciated.
BTW its a 97 Ls.

LsG86

I dont have a repair manual so I think this will be of use. The bolts for the air chamber are 13ft lbs, so I think I will try to take it off for cleaning. I found this online its torque specs for a 92 SC400:Post 1UZFE torque settings
4.0L V8
Selected Block
1992 Lexus SC 400
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE
------------------------------------------------------------
Application Ft. Lbs. (N.m)
A/C Compressor
Bolt ........................................... 36 (49)
Nut ............................................ 22 (30)
Air Intake Chamber Bolt/Nut ...................... 13 (18)
Camshaft Bearing Cap Bolt (1) .................... 12 (16)
Camshaft Sprocket Bolt .......................... 80 (109)
Catalytic Converter-To-Exhaust Manifold Nut ...... 46 (62)
Catalytic Converter-To-Exhaust Pipe Bolt ......... 32 (43)
Cold Start Injector Fuel Line-To-Delivery
Pipe Union Bolt ................................ 11 (15)
Connecting Rod Cap Bolt
Step 1 ......................................... 18 (24)
Step 2 ........................... Additional 90 Degrees
Coolant Inlet Housing Bolt ....................... 13 (18)
Coolant Inlet Housing Plug ....................... 33 (45)
Crankshaft Pulley Bolt ......................... 181 (245)
Crossmember Bolt/Nut
Bolt ........................................... 19 (26)
Nut ................................................ (2)
Cylinder Head Bolt (3)
Step 1 ......................................... 29 (39)
Step 2 ........................... Additional 90 Degrees
Delivery Pipe Nut ................................ 13 (18)
Distributor Housing Bolt ......................... 13 (18)
Drive Belt Idler Pulley Bolt ..................... 27 (37)
Drive Belt Tensioner Bolt/Nut .................... 12 (16)
Drive Plate Bolt ................................. 72 (98)
Drive Shaft Center Bearing Bolt
LS400 .......................................... 27 (37)
SC400 .......................................... 36 (49)
Drive Shaft Flange Bolt
LS400 .......................................... 58 (79)
SC400 .......................................... 69 (94)
EGR Pipe Nut ..................................... 13 (18)
EGR Valve Adapter Bolt/Nut ....................... 13 (18)
EGR Valve Bolt/Nut ............................... 13 (18)
Engine Mount Nut ................................. 43 (58)
Exhaust Manifold Nut
LS400 .......................................... 33 (45)
SC400 .......................................... 29 (39)
Fan Bracket Bolt/Nut (LS400 Only)
PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com
4.0L V8Selected Block (p. 2)1992 Lexus SC 400For Lextreme Powertrain 12-mm Head ..................................... 12 (16)
All Others ..................................... 22 (30)
Fan Clutch Assembly Nut (LS400 Only) ............. 16 (22)
Front Coolant By-Pass Housing Nut ................ 13 (18)
Fuel Inlet Hose-To-Delivery Pipe ................. 29 (39)
Fuel Return Pipe Union Bolt ...................... 26 (35)
Hydraulic Pump Bolt/Nut (SC400 Only)
12-mm Head ..................................... 12 (16)
All Others ..................................... 22 (30)
Intake Manifold Bolt/Nut ......................... 13 (18)
ISC Valve Nut .................................... 13 (18)
Knock Sensor ..................................... 33 (45)
Main Bearing Cap
Bolt (4) ....................................... 36 (49)
Nut (5)
Step 1 ........................................ 20 (27)
Step 2 .......................... Additional 90 Degrees
No. 1 & No. 2 Idler Pulley Bolt .................. 25 (34)
No. 2 Timing Belt Cover Bolt
10-mm Head ......................................... (6)
12-mm Head ..................................... 12 (16)
Oil Filter Bracket Bolt/Nut ...................... 13 (18)
Oil Pan
No. 1 Oil Pan Bolt/Nut
10-mm Head ........................................ (6)
12-mm Head .................................... 13 (18)
No. 2 Oil Pan Bolt/Nut ............................. (6)
Oil Pump Bolt
12-mm Head ..................................... 12 (16)
14-mm Head ..................................... 22 (30)
Oxygen Sensor-To-Exhaust Pipe .................... 33 (45)
Power Steering Pump
Bolt ........................................... 29 (39)
Nut ............................................ 32 (43)
Pulsation Damper ................................. 29 (39)
Rear Coolant By-Pass Housing Nut ................. 13 (18)
Spark Plug ....................................... 13 (18)
Steering Damper Bolt (LS400 Only) ................ 20 (27)
Throttle Body Bolt/Nut ........................... 13 (18)
Timing Belt Tensioner Bolt ....................... 20 (27)
Water Pump Bolt/Nut .............................. 13 (18)
INCH Lbs. (N.m)
Baffle Plate Bolt/Nut ............................. 69 (8)
Center Floor Crossmember Brace Bolt/Nut ......... 108 (12)
Cold Start Injector Bolt .......................... 69 (8)
Distributor Cap Bolt .............................. 34 (4)
Distributor Rotor Bolt ............................ 34 (4)
PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com
4.0L V8Selected Block (p. 3)
Main Bearing Stud-To-Cylinder Block .............. 84 (10)
Oil Pump Cover Bolt .............................. 96 (11)
Pick-Up Sensor Bolt ............................... 56 (7)
Pick-Up Tube Bolt/Nut ............................. 69 (8)
Rear Oil Seal Retainer Bolt ....................... 69 (8)
Timing Belt Rear Plate Bolt ....................... 69 (8)
Valve Cover Bolt .................................. 52 (6)
(1) - Tighten bolts to specification in sequence.
See Fig. 29.
(2) - Tighten to 124 INCH lbs. (14 N.m).
(3) - Tighten bolts to specification in sequence.
See Fig. 12.
(4) - Tighten main bearing cap nuts before tightening bolts.
Bolts are located on along outside of cylinder block.
(5) - Tighten nuts to specification in sequence.
See Fig. 51.
(6) - Tighten to 69 INCH lbs. (8 N.m).