Head Problems :-(

[andy 0]

Hi people, new to this forum. Bought a mint 94 VR6 about two months ago. Was very impressed, apart from the soft handling (to be sorted later), engine was performing brilliantly until I sat in traffic for about half hour and it overheated in dramatic style. Fitted a new auxillary water pump as this was where a leak had formed. Took it out for a test run and it overheated again, wherupon I began to suspect the head gasket. Sure enough a compression test confirmed cylinders 1 & 6 had very low figures. Have fixed many poorly heads/gaskets before so will do this, but I am struggling to get any info ie a manual to assist me. I need to know torque figs etc for all the relevant bolts etc and work sequence. Have ordered the VR6 Engine book by Peter Russek but the delivery time is several weeks. Can anybody help me out or point me in the right direction? Cheers

[VR6Pete 1,455]

i think ive got some tech info, but i think it's for the US VR6

[Phil 0]

The engine is exactly the same/

[VR6Pete 1,455]

all bolts 40nm

all bolts 60nm

all bolts 90 degrees

and then all bolts another 90 degrees

bolt positions and order to be tightened

18 14 8 2 7 13

16 10 4 1 5 11 17

20 12 6 3 9 15 19

[andy 0]

Hi , thanks for info, head now down, has anyone got figs for the inlet and exhaust manifolds and camshaft sprocket bolts?

[VR6Pete 1,455]

Application Ft. Lbs. (N.m)

A/C Bracket-To-Engine Bolt ....................... 22 (30)

Axle Shaft-To-Transaxle Drive Flange Bolt ........ 33 (45)

Camshaft Bearing Cap Bolt ........................ 15 (20)

Camshaft Sprocket Bolt .......................... 74 (100)

Clutch Cover Bolt ................................ 15 (20)

Connecting Rod Bolt ................... 22 (30) + 1/4 Turn

Crankshaft Main Bearing Cap Bolt ...... 22 (30) + 1/2 Turn

Cylinder Head Bolt (1)

Step 1 ......................................... 30 (40)

Step 2 ......................................... 44 (60)

Step 3 ....................... Additional 1/4 (90ø) Turn

Step 4 ....................... Additional 1/4 (90ø) Turn

Engine Bracket (Front) ........................... 44 (60)

Engine Bracket (To Body) ......................... 33 (45)

Engine-To-Transaxle 10-mm Bolt ................... 44 (60)

Engine-To-Transaxle 12-mm Bolt ................... 55 (80)

Exhaust Manifold-To-Cylinder Head Bolt & Nut ..... 18 (25)

Exhaust Pipe-To-Catalytic Converter Bolt ......... 18 (25)

Exhaust Pipe-To-Manifold Nut ..................... 30 (40)

Flywheel-To-Crankshaft Bolt ........... 44 (60) + 1/4 Turn

Intake Manifold .................................. 18 (25)

Intermediate Shaft Sprocket Bolt ................ 74 (100)

Oil Pan Bolt ..................................... 15 (20)

Oil Pan Drain Plug ............................... 37 (50)

Oil Pressure Switch .............................. 18 (25)

Oil Pump Cover Long Bolt ............................. (2)

Oil Pump Cover Short Bolt ........................ 18 (25)

Power Steering Pump Bracket Bolt ................. 18 (25)

Pressure Plate Bolt .............................. 15 (20)

Starter Mount Bolt ............................... 18 (25)

Timing Belt Tensioner Nut ........................ 15 (20)

Torque Converter-To-Carrier Plate Bolt ........... 22 (30)

Vibration Damper Bolt .......................... 332 (450)

Water Pump Pulley Bolt ........................... 15 (20)

Water Pump Housing-To-Engine Bolt ................ 15 (20)

INCH Lbs. (N.m)

Fuel Rail Bolt (Lower) ............................ 89 (10)

Timing Belt Idler Bolt ........................... 89 (10)

Valve Cover Retaining Nut ........................ 89 (10)

Water Pump-To-Housing ........................... 115 (13)

(1) - Never reuse cylinder head bolt(s) when servicing.

(2) - Tighten bolt to 89 INCH lbs. (10 N.m).