JDM74

Search is down right now, so here's the question:

Are the stock main bearing cap bolts torque to yield like the head bolts?

DuronClocker

iTrader: (25)

I believe so because they should not be re-used. Was the block line-honed to replace the bearings?

jay_lt4

iTrader: (4)

Fastener Tightening Specifications
Application
Specification

Metric
English

Air Conditioning Compressor Bracket Bolts
50 N·m
37 lb ft

Air Conditioning Idler Pulley Bolt
50 N·m
37 lb ft

Air Conditioning Tensioner Bolt
25 N·m
18 lb ft

Air Injection Reaction (AIR) Pipe-to-Exhaust Manifold Bolts
20 N·m
15 lb ft

AIR Right Side Pipe Bracket-to-Cylinder Head Bolt
20 N·m
15 lb ft

Camshaft Retainer Bolts
25 N·m
18 lb ft

Camshaft Sensor Bolt
25 N·m
18 lb ft

Camshaft Sprocket Bolts
35 N·m
26 lb ft

Connecting Rod Bolts - First Pass
20 N·m
15 lb ft

Connecting Rod Bolts - Final Pass
75 degrees

Coolant Temperature Gauge Sensor
20 N·m
15 lb ft

Crankshaft Balancer Bolt (Installation Pass-to Ensure the Balancer is Completely Installed)
330 N·m
240 lb ft

Crankshaft Balancer Bolt (First Pass-Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes)
50 N·m
37 lb ft

Crankshaft Balancer Bolt (Final Pass)
140 degrees

Crankshaft Bearing Cap Bolts (Inner Bolts-First Pass in Sequence)
20 N·m
15 lb ft

Crankshaft Bearing Cap Bolts (Inner Bolts-Final Pass in Sequence)
80 degrees

Crankshaft Bearing Cap Side Bolts
25 N·m
18 lb ft

Crankshaft Bearing Cap Studs (Outer Studs-First Pass in Sequence)
20 N·m
15 lb ft

Crankshaft Bearing Cap Studs (Outer Studs-Final Pass in Sequence)
53 degrees

Crankshaft Oil Deflector Nuts
25 N·m
18 lb ft

Crankshaft Position Sensor Bolt
25 N·m
18 lb ft

Cylinder Head Bolts (First Pass all M11 Bolts in Sequence)
30 N·m
22 lb ft

Cylinder Head Bolts (Second Pass all M11 Bolts in Sequence)
90 degrees

Cylinder Head Bolts (Final Pass all M11 Bolts in Sequence-Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head)
90 degrees

Cylinder Head Bolts (Final Pass M11 Medium Length Bolts at the Front and Rear of Each Cylinder Head in Sequence)
50 degrees

Cylinder Head Bolts (M8 Inner Bolts in Sequence)
30 N·m
22 lb ft

Cylinder Head Coolant Plug
20 N·m
15 lb ft

Cylinder Head Core Hole Plug
20 N·m
15 lb ft

Drive Belt Idler Pulley Bolt
50 N·m
37 lb ft

Drive Belt Tensioner Bolts
50 N·m
37 lb ft

Engine Block Coolant Drain Plugs
60 N·m
44 lb ft

Engine Block Heater
40 N·m
30 lb ft

Engine Block Oil Gallery Plugs
60 N·m
44 lb ft

Engine Coolant Air Bleed Pipe Bolts and Studs
12 N·m
106 lb in

Engine Flywheel Bolts (First Pass)
20 N·m
15 lb ft

Engine Flywheel Bolts (Second Pass)
50 N·m
37 lb ft

Engine Flywheel Bolts (Final Pass)
100 N·m
74 lb ft

Engine Flywheel Hub Collar Bolt (Automatic Transmission)
130 N·m
96 lb ft

Engine Front Cover Bolts
25 N·m
18 lb ft

Engine Mount Bracket-to-Engine Block Bolts
50 N·m
37 lb ft

Engine Mount Lower Stud-to-Crossmember Nut
65 N·m
48 lb ft

Engine Mount Upper Nut
65 N·m
48 lb ft

Engine Rear Cover Bolts
30 N·m
22 lb ft

Engine Service Lift Bracket M8 Bolt
25 N·m
18 lb ft

Engine Service Lift Bracket M10 Bolts
50 N·m
37 lb ft

Engine Valley Cover Bolts
25 N·m
18 lb ft

Exhaust Manifold Bolts (First Pass)
15 N·m
11 lb ft

Exhaust Manifold Bolts (Final Pass)
25 N·m
18 lb ft

Exhaust Manifold Pipe Nuts
35 N·m
26 lb ft

Flywheel Housing Bolt
50 N·m
37 lb ft

Fuel Injection Fuel Rail Bolts
10 N·m
89 lb in

Generator and Power Steering Pump Bracket Bolts
50 N·m
37 lb ft

Generator Rear Bracket Bolt
50 N·m
37 lb ft

Ground Strap-to-LH Cylinder Head Bolt
32 N·m
23 lb ft

Ground Strap-to-LH Frame Rail Bolt
12 N·m
106 lb in

Ignition Coil Bracket-to-Valve Rocker Arm Cover Bolts
12 N·m
106 lb in

Ignition Coil-to-Bracket Bolts
12 N·m
106 lb in

Intake Manifold Bolts (First Pass in Sequence)
5 N·m
44 lb in

Intake Manifold Bolts (Final Pass in Sequence)
10 N·m
89 lb in

Knock Sensors
20 N·m
15 lb ft

Oil Filter
30 N·m
22 lb ft

Oil Filter Fitting
55 N·m
40 lb ft

Oil Level Indicator Tube Bolt
16 N·m
12 lb ft

Oil Level Sensor
13 N·m
115 lb in

Oil Pan (Lower) Bolts
12 N·m
106 lb in

Oil Pan Closeout Cover Bolt (Left Side)
12 N·m
106 lb in

Oil Pan Closeout Cover Bolt (Right Side)
12 N·m
106 lb in

Oil Pan Drain Plug
25 N·m
18 lb ft

Oil Pan M8 Bolts (Oil Pan-to-Engine Block and Oil Pan-to-Front Cover)
25 N·m
18 lb ft

Oil Pan M6 Bolts (Oil Pan-to-Rear Cover)
12 N·m
106 lb in

Oil Pressure Sensor
20 N·m
15 lb ft

Oil Pump Cover Bolts
12 N·m
106 lb in

Oil Pump Relief Valve Plug
12 N·m
106 lb in

Oil Pump Screen Nuts
25 N·m
18 lb ft

Oil Pump Screen-to-Oil Pump Bolt
12 N·m
106 lb in

Oil Pump-to-Engine Block Bolts
25 N·m
18 lb ft

Oil Temperature Sensor
20 N·m
15 lb ft

Oil Pan Cover Bolts
12 N·m
106 lb in

Positive Crankcase Ventilation (PCV) System Strap Nut (at Right Front Vapor Vent Pipe Stud)
12 N·m
106 lb in

Power Steering Pump Bolts
25 N·m
18 lb ft

Power Steering Reservoir Bolts
50 N·m
37 lb ft

Spark Plugs (Cylinder Heads-New)
20 N·m
15 lb ft

Spark Plugs (all Subsequent Installations)
15 N·m
11 lb ft

Starter Motor Bolts
50 N·m
37 lb ft

Throttle Body Bolts
12 N·m
106 lb in

Valve Lifter Guide Bolts
12 N·m
106 lb in

Valve Rocker Arm Bolts
30 N·m
22 lb ft

Valve Rocker Arm Cover Bolts
12 N·m
106 lb in

Water Inlet Housing Bolts
15 N·m
11 lb ft

Water Pump Bolts (First Pass)
15 N·m
11 lb ft

Water Pump Bolts (Final Pass)
30 N·m
22 lb ft

Water Pump Cover Bolts
15 N·m
11 lb ft



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JDM74

No need for a line-hone. Where does it say they should not be reused? I have the factory service manual (volume 2, I borrowed it) and I can't find anything in it about using new head bolts or main cap bolts.

DuronClocker

iTrader: (25)

Hmm it may just be something that most people recommend. My mistake. If the time/money is available, I would order up some ARP studs and go that route for the extra safety anyways (tis what I plan).

jay_lt4

iTrader: (4)

head bolts must be replaced, right from gm service manual:

Document ID# 322887
2000 Chevrolet Corvette


--------------------------------------------------------------------------------

Cylinder Head Installation (Left Side)

Tools Required
J 36660-A Torque Angle Meter





Caution: Wear safety glasses in order to avoid eye damage.

Notice: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.

Important: Do not reuse the cylinder head bolts. Install NEW cylinder head bolts during assembly.
Do not use any type sealant on the cylinder head gasket, unless specified.
The cylinder head gaskets must be installed in the proper direction and position.

JDM74

Ok, so I found that note. Which still doesn't answer my question.

BlackScreaminMachine

iTrader: (17)

to my knowledge, its all torque to yeild bolts, ARP makes excellent bolts, and thats the only thing id replace stock with.

pist0lpete

iTrader: (3)

12560272 and 12560373 Are the part numbers for the two types of main cap bolts you will need to buy. The outer smaller opposing bolts can be re-used just be sure to dab some thread sealer on them. The factory bolts are torque to yield. You could buy arp main studs but that would require you have the bline line honed which costs more money. New factory replacement bolts should be more than strong enough.

PREDATOR-Z

Straight from the hip

JDM74

In the main cap installation instructions straight from the shop manual there is no mention of replacing the main cap bolts. Only the head bolts and the crank pulley bolt. I think I will buy stock new bolts just to be safe since nobody really knows.

oange ss

iTrader: (50)

why would you have to have it line honed just replacing bolts with studs ?

chriswtx

iTrader: (5)