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2006 Legacy 2.5i Better Head Gasket? - Subaru or Six Star


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OEM is best usually. Unless fully built

 

OP is asking about head gaskets in a 2.5i na engine, not a turbo engine. The head gaskets in the na motor are absolute shit. Almost guaranteed they will start to leak oil before your first timing belt job is needed.

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Does ARP make head studs that will fit a 2.5i ?

 

Were the heads and block checked for flatness by a machine shop ?

 

Cometic head gaskets were the HG of choice for high HP boosted Honda's

305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD).  CHECK your oil, these cars use it.

 

Engine Build - Click Here

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+1 on FelPro PermaTorque MLS gaskets. They were recommended by a reputable foreign auto shop near me when I had my old 2003 Legacy gaskets replaced. The old girl has been running great since (~20K miles on the new gaskets)

 

As to why - I'd say any gasket from a manufacturer with good reviews is worthwhile as long as it is multi-layer steel (MLS). Also, when I had my gaskets replaced the shop I took it to had the heads & block resurfaced by NAPA. Goes without saying but it is a good idea to have that done.

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