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Old 02-05-2008, 01:32 AM
AWILLIAMS64 AWILLIAMS64 is offline
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Re: engine codes 171b 172b 174b 175b

i found the torque specs on this site. i think it was changed to 13 from 17 is this correct.

Only info I can give you is that there's a TSB (technical service bulletin) on all 1998 to 2003 Isuzu models equipped with 3.2L or 3.5L engine that revamps the torque specifications for the "gasket intake manifold to cylinder head". Revised torque for both the 3.2L and the 3.5L is 13 lb ft.

Other specs:

Intake Manifold Fasteners: 16 ft. lb.
Common Chamber Fasteners: 18 ft. lb.
Throttle Body Fasteners: 18 ft. lb.
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