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ej 25 Head Gaskets?
Posted 27 June 2008 - 03:44 PM
Posted 27 June 2008 - 04:29 PM
unlike the EA82 this is an interference engine. being that and it's nearly 10 years old i'd carefully inspect all the timing belt pulleys. replace any that are noisy or spin too freely. keep in mind they need to last another 100,000 miles (next timing belt).
i'm a big fan of just buying the Ebay timing belt kits - it comes will all new pulleys and a new tensioner. i'd rather have all new than one new and the rest 10 years old and lacking grease. i sometimes use the pulleys and still buy a Subaru belt.
the reasons are a few. one being that it's interference like i already mention, more valuable (newer), and the timing belt intervals are much longer. with an EA82 you can inspect them every 60,000 miles and replace them at 120k or 180k...but with these the timing belts are every 105,000. these pulleys already have some miles (and overheating) on them, and you're expecting an additional 100,000.
my suggestion is to either crack into it at 50,000 to inspect or just put all new stuff in there now. most people paying to have it done aren't going to "inspect it" so i just suggest going all new.
ebay kits are nice because very few people actually want to pay $500 just for a couple pulleys from subaru and i'd rather have all new than some new and some old.
have the valves adjusted while it's at the machine shop.
no brainer stuff - reseal the oil pump and replace the cam seals and valve cover gaskets. all very easy to do, particularly once the timing belt is off. check the oil pump backing plate screws. any that are loose, put locktite on the threads and reinstall them tight.
Posted 27 June 2008 - 05:26 PM
Get some ARP studs while you're at it:
260-472 is the part # for the SOHC EJ25
Very useful info:
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