_{In our equipment we use threadserts which are the same as timeserts.  I haven't used a helicoil in years.  As for the rust. in the cylinder take it to an old timer in a machine shop and have it sleeved.  Jeff Cassell in Spokane did my last one for 85.00.  Problem solved.  The farmboy in me would have thrown ATF down the cylinder and ran it and see.  But tearing it down and rebuilding it is the right thing to do so props to the above recommendation...}

They're good, but not as good as time serts. GM looked at them, but they failed the tensile/stretch test.

First thing you do is call: A Plus Auto Recycling at 884-884-2864

See if they have any subarus with the 1.6 engine.  Get the cost including the core return value which what you will get for your rusted block.  Naturally you are looking for an engine with 150,000 miles or less.  You would prefer one from a car where the owner took care of the rest of the car, and did not put on aftermarket stuff. 

 

That helicoiled cylinder head bolt hole is probably the reason why coolant leaked into the cylinder and rusted it.  It just is not worth the risk at this point to fix it, if you can pull a short block for a $140 and get $20 core return.  I tried to clean up a rusted block before.  It made it about 3000 miles before it started making a lot of strange noises.  And it was not as bad as your short block.   

Edited April 17, 201312 yr by scoobiedubie

They're good, but not as good as time serts. GM looked at them, but they failed the tensile/stretch test.

Good to know can they be purchased at Fastenall or Grainger?