STI engine

[quik1987]

Some detail about the FB20 that might apply to the FA20:

Subaru FB engine

(Japanese: Subaru FB engine) New generation boxer engine announced on 23 September 2010.[6] The Subaru FB engine is entirely new as of 2010. Subaru aims to reduce emission and improve fuel economy. The key is to increase and broaden torque output. Subaru increases the stroke but decreased the bore.
The FB has an all new block and head. It now has DOHC, with intake and exhaust variable valve timing (AVCS - Active Valve Control System), and timing chain that replaced the timing belt. Moving to chain-driven cams is said to allow the valves to be placed at a narrower angle to each other and shrink the bore of cylinder from 99.5 mm to 94. It results in less unburned fuel during cold starts, thereby reducing emission. Subaru is able to maintain the exterior dimension substantially unchanged by asymmetrical connecting rods like those in EZ36. The FB is only marginally heavier. Car and Driver is told direct injection will be added soon. Subaru claims a 28-percent reduction in friction losses, mainly due to lighter pistons and connecting rods.[7][8] The FB has a 10% increase in gas mileage with the power coming on sooner and the torque band being broader.

• FB20: 1,995 cc, DOHC, 84mm bore x 90mm stroke, 10.5:1 Compression Ratio,

Rated at: 109 kW (148PS) @6,000 rpm, 196 Nm (20 kgm) @4,200 rpm in (2011+ JDM Subaru Forester)[9],Rated at: 145 hp, 145 ft-lb (2012+ Subaru Impreza)

[RRnold]

Originally Posted by ichitaka05

Under the oil filter mount, there is a small nipple which you can pull off to drain that catch area. Some put a small disposable bottle or cup directly under it to catch the oil that drips out. Some others have even gone as far as to run a hose all the way down by the oil pan.

Originally Posted by Aurex

Perfect! Thank you sir, for taking the time to explain how it works.

To add, the current Tacoma has it in that similar position and it's makes it so much easier to change and is a lot cleaner. I'm glad they've decided to place it in the same position.

[KaliKev]

Same engine as my FJ. Changing oil is a breeze!

[suprachica79]

Hearing that it should have a timing chain is really exciting to me. Changing timing belts is such an expensive part of maintanence!

[ichitaka05]

Originally Posted by suprachica79

Hearing that it should have a timing chain is really exciting to me. Changing timing belts is such an expensive part of maintanence!

WHAT? I replaced my Impreza's Timing belt lil while ago and only cost me $50. Chain would of cost me double or triple of the cost

[MannyO]

I remember when I almost bought a B5 Audi S4 a few years ago. The thing that stopped me from buying it was the timing belt replacement cost. It was somewhere around $1,500. $350 for parts: Belt, Actuator, Cam Idler, Cam Tensioner and the rest in labor.

[suprachica79]

Originally Posted by ichitaka05

WHAT? I replaced my Impreza's Timing belt lil while ago and only cost me $50. Chain would of cost me double or triple of the cost

You replaced it yourself then. I'm talking for the average person who doesn't know how to replace one themselves, bringing it to a shop can cost over $1000. Chain's last alot longer.

[ichitaka05]

Originally Posted by suprachica79

You replaced it yourself then. I'm talking for the average person who doesn't know how to replace one themselves, bringing it to a shop can cost over $1000. Chain's last alot longer.

technically, you should change belt or chain around same time anyways. Maybe 30~60k difference

[suprachica79]

I was under the impression you could wait alot longer with a chain

[ichitaka05]

Originally Posted by suprachica79

I was under the impression you could wait alot longer with a chain

Commonly chain replacement said to be every 100k vs belt is every 60k... but official Subaru maintenance schedule inspected every 30k, but don't need to replace til 100k.

edit. BUT some chain said no need to change it 200k... so it's all up to how the company makes it

[suprachica79]

I thought belts are 80-100k, chains can double that or even stand the whole life of the engine

[ichitaka05]

Originally Posted by suprachica79

I thought belts are 80-100k, chains can double that or even stand the whole life of the engine

Again, it's all up to the car maker. Chain still stretch resulting loosen the tension equal to misfire & other engine damaging stuff.

I have only worked w timing chain twice, so I'm no expert in that field. IMO I prefer belt over chain do to light weight & easier to install... but that's just me.

[Marrk]

re Timing Chains:

I am not an expert, but my understanding has always been that timing chains rarely need to be replaced. They are tensioned by a tensioner. They perform better than belts, though perhaps not as well as gear-driven cams.

Again, I am not an expert. But I was happy to be rid of my Tercel and the headache of belt replacements because belts were something that I could not do myself. (The Tercel was a great car, by the way. Mine was, anyway.)


:happy0180:

[ichitaka05]

^Belt have tensioner too