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  1. 2.5 Liter/Litre Factory Motor
    Recently pulled the motor on my 04 sti since cylinder 4 decided to do cylinder 4 things. Blocks got 146k on it, pistons and cylinder walls look good and bearings seem good. Compression was good all around and cylinders 1-3 had about 4-5% leakdown. Kinda wanna take this thing apart fully as a...
  2. 2.5 Liter/Litre Factory Motor
    Can I run this set up without machining the heads and changing valves? does anyone No where I can get a repair book for 2021 sti
  3. 2.5 Liter/Litre Factory Motor
    I have an '05 STI with about 135k miles with the following symptoms: Consuming around 1qt of oil every ~800 miles. LONG overdue for a new timing belt. Valve covers leaking a moderate amount. Small oil pan leak. Radiator cap swollen. The shop didn't necessarily say I outright had to buy a new...
  4. Built Motor Discussion
    I have a completely built ej257 short block for a Subaru sti brand new 2019 performance crank, pmaxx coated main bearings and rod bearings, Manley platinum serious 100mm pitons rings gapped for up to 28 psi, bored over to 100mm, Manley turbo tuff rods, block has been decked and comes with ARP...
1-4 of 4 Results