2016+ WRX STI
#1
Scooby Regular
Thread Starter
2016+ WRX STI
Haven't been on here for a very long time, sold my 2005 STI few years ago but looking to get another Subaru. This time I'm looking at the newer WRX STI.
I remember the 2.5 engine had issues on the hawk eye, does the new style Subaru have the same issues does anyone know?
Is there anything I should look out for when viewing one? Other than the obvious.
Thanks
I remember the 2.5 engine had issues on the hawk eye, does the new style Subaru have the same issues does anyone know?
Is there anything I should look out for when viewing one? Other than the obvious.
Thanks
#3
Scooby Regular
iTrader: (20)
Haven't been on here for a very long time, sold my 2005 STI few years ago but looking to get another Subaru. This time I'm looking at the newer WRX STI.
I remember the 2.5 engine had issues on the hawk eye, does the new style Subaru have the same issues does anyone know?
Is there anything I should look out for when viewing one? Other than the obvious.
Thanks
I remember the 2.5 engine had issues on the hawk eye, does the new style Subaru have the same issues does anyone know?
Is there anything I should look out for when viewing one? Other than the obvious.
Thanks
#6
Scooby Regular
Thread Starter
Hmm that's quite a bit considering the car would be expensive too. Obviously long term well worth it, but something to consider.
Is it a general issue or more a issue if you increase the bhp?
Is it a general issue or more a issue if you increase the bhp?
#7
Scooby Regular
iTrader: (20)
If you buy one just have a slush fund ready just incase, the rest of the car is pretty much bomb proof it's just the engine. You may find a rebuild for about 3.5k but remember that cheaper doesn't mean better.
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#8
Scooby Regular
Thread Starter
Glad I asked. May have to think of a different car completely as this will be my car for a very long term.
Shame as I love the new versions. Sadly I'd only have enough for the car but not the extra.
Thank you all
Shame as I love the new versions. Sadly I'd only have enough for the car but not the extra.
Thank you all
#10
Scooby Regular
Even with its faults i love the 2.5 as a road engine, when its built right. more usable and nicer to drive than the 2,0 imo as you dont have to rev the **** off it and they don't have anywhere near the lag of the 2.0.
#11
Scooby Regular
Due to the ever tightening Uk/Euro emission limits the 2.5 has suffered from having to use hypereutectic alloy pistons (low expansion rate) to obtain the reduction in piston skirt to liner clearances required to meet them.
Because of this, ringland failure can occur, if not run in sympathetically, or when higher loads are place on the pistons when power is increased significantly.
Fitting forged pistons can solve this problem but in reality requires the engine to be dismantled to get the correct clearances for forged pistons which have a higher expansion rate and need bigger clearances.
Raising the power /torque can also cause the head bolts to stretch leading to head gasket failure. These should be replaced by ARP or other brand of head studs to improve head to block clamping pressure.
Because of this, ringland failure can occur, if not run in sympathetically, or when higher loads are place on the pistons when power is increased significantly.
Fitting forged pistons can solve this problem but in reality requires the engine to be dismantled to get the correct clearances for forged pistons which have a higher expansion rate and need bigger clearances.
Raising the power /torque can also cause the head bolts to stretch leading to head gasket failure. These should be replaced by ARP or other brand of head studs to improve head to block clamping pressure.
Last edited by Don Clark; 17 April 2019 at 04:15 PM.
#12
Just noticed there is a 64 plate on trader think 25k miles just had £4900 Engine rebuild.....
#13
Scooby Regular
Thread Starter
#15
Scooby Regular
i;ve heard figures from 30% to 50% mentioned but highly unlikley to ever get an accurate figure. Subaru UK have always denied there is an issue, even though i believe subaru US has now.
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