[Rough Idle]

Out of my scope really, but could be your idle air control valve, if that's playing up it will give you issues with idle, especially if the engine gets loaded up a little as the valve may not be letting enough air through, hence it tries to stall. 

 

I know you said vacuum leaks are out, but check if any air is getting pulled in after the MAF, if you imagine the air filter creates a bit of a restriction and this can cause a slight vacuum in the intake even before the throttle, and if unmetered air gets in you could be running lean, and this could only give issues when idling, 

 

Just ideas for food, or thought or what ever the saying is, either way I'm hungry.

[Rod/Piston upgrade without supporting mods?]

11 hours ago, Panda said:

Just like you, this is meant to be a wee project for me....I already have another EZ Subaru to drive around and this is just my weekend car so I don't mind if it's off the road.

 

....what are the clearances you checked in regard to your oil pump?

 

....did the machine shop check your crank, crank journals, hardness test on blocks and heads, crack test pistons, check bores etc?

....or did they only do what you said, blocks cleaned and decked with a light hone?

 

 

How much did your bill come to? I'm expecting the whole rebuild including parts and machine shop fees to come to a bit over two grand?

I cant find excatly where I got the clearances, but it was in a subaru service manual, what I wrote in my book 

 

Rotor tips std 0.04 - 0.14 max 0.18mm 

 

Outer rotor to body 0.02 - 0.07 max 0.15mm 

 

Rotor height to bolt on cover (can measure this with a staight edge) 0.1 - 0.175 max 0.2mm 

 

Mine was just under the std upper limit with no visable damage, so good enough for me

 

They just did the work mentioned and it was $475, I checked the journals myself 

 

I just got the bill for my heads today, strip and clean, regrind/cut the valves, then reset the valve lash and install new stem seals on reassembly, and surfacing, boths head it was $1200 

 

And Ive spent about $730 at rock auto for bearings, rings, timing kit, full gasket kit and a couple little extra bits! 

 

Hope thats helps

[Rod/Piston upgrade without supporting mods?]

Im in the process of rebuilding my first ej20 at the moment, its not done so I cant say what Ive done works, Im mentally prepared for it to pop on the first drive =] 

 

I ran a bearing, so I bought a donor motor and had the block cleaned and decked, with a light hone for the new rings, 

 

Im sticking with the stock pistons and rods that were in it, just new bearings and rings, and a complete gasket kit, all parts are from rockauto, and Im reusing my stock oil pump because the clearances were ok, 

 

Its just a project car so Ive been taking my time and its quite enjoyable, learning alot too,

 

Im up to the head rebuild now, but ive passed that part to a recon shop,

 

If i can help with any questions let me know! 

 

 

[Help wiring car alarm indicators and door locks: BH Legacy Lancaster]

How are you getting on with this, swamp?