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Old 10-02-2020, 12:55 PM   #1
oreganobag
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Member#: 518019
Join Date: Aug 2020
Default 2005 STI - Timing Belt Job - What else to replace?

Buying a used STI at 90k miles that needs the timing belt replaced. I've bought the Aisin kit that includes the waterpump and bought an OEM thermostat and gasket and coolant.

I also bought new NGK Irridium spark plugs.

Is there anything else I should pre-emptively have done while it is in the shop to lower costs and have them all done at the same time? Headgaskets maybe? OEM or aftermarket? I plan on keeping the car under 350 HP and really only doing reliability/driveability mods.
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Old 10-04-2020, 12:56 AM   #2
DrD
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Member#: 22412
Join Date: Aug 2002
Chapter/Region: SWIC
Location: Albuquerque, NM
Vehicle:
2012 Legacy 2.5GT
Ice Silver Metallic

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The other belts you remove (alternator and AC) since they are coming off, anyway. I'd leave the crank and cam seals alone unless you have a leak. At that age, I'd think about replacing the upper/lower radiator hoses, as well. If you bought the plugs off ebay or amazon, make sure they are not counterfeit (it's been a big issue)
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Old 12-02-2020, 03:11 PM   #3
600hpSTI
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Join Date: Dec 2020
Chapter/Region: SCIC
Location: CA
Vehicle:
2008 WRX STI Hatch
Hyper Blue

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Have the TB, water pump, and boost lines (known to corrode and cause boost leaks) checked and/or replaced
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