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Old 10-12-2012, 10:25 PM   #1
lavid2002
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Join Date: Oct 2009
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2005 PSM WRX
18.5lb. 93 oct, DP, UP

Default Just dropped in a motor, help me make sure I break it in right (Oil pressure + stuff)

Alright guys,

I just bolted in an EJ22 engine I completely overhauled. I cranked her for a while and was getting a solid 20 PSI oil pressure cranking the engine with the spark plugs out + fuel pump disconnected. I did this for a while and felt as if I had prepped the lubrication system adequately.

I started her up and I'm getting about 75psi on cold 5w30
.0015" on the rods
.002" on the mains

I looked up the factory spec in the haynes manual and it's apx 26 Psi around 2krpm and 34psi around 4k rpm.

I am just quoting these figures off the top of my head from the haynes manual. Point being, my oil pressure is high right now because of the cold viscous oil, but is it normal? Am I good to let the car idle and warm up so I can check the oil pressure at operating temp?


Also, a note on break in procedure. My haynes manual says to warm the car up, and accelerate to ~50mph, leaving it in gear, and engine braking to about 30 mph. Do this over a few times, drive normally for 500 miles + change oil. What say ye?

I also plan to run a compression test after "Break in" to confirm the engines compression.


What do you guys think of this procedure? Also, is there anything else I should do when breaking this motha' in?

First break in after my first experience with shortblock work and I want to do it right

Thanks Everyone
-Dave
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Old 10-12-2012, 10:28 PM   #2
Counterfit
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You *might* be better off in the Built Motor forum, but I'm not sure.
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Old 10-12-2012, 10:33 PM   #3
lavid2002
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18.5lb. 93 oct, DP, UP

Default

I hung out there a while when I was building the block, very helpful.

On a side note, when I started the motor it kept shutting off after a few seconds. I was like oh no timing? Fuel? Ignition??


....Biggest vac leak ever. Forgot a tube hahaha. Keeps me humble
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Old 10-12-2012, 11:13 PM   #4
mod maniac
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The oil pressure is fine for a fresh, tight and cold motor.
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Old 10-12-2012, 11:50 PM   #5
RaceFaceXC
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Those clearances sound a little big for factory spec but probably good for lots of high rpm/load driving. Did you do any oil pump mods or change to a larger volume pump?

Normal driving with lots of in gear engine braking and don't be too easy on it.
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Old 10-13-2012, 12:13 AM   #6
lavid2002
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Default

Yeah I had a thread on the mains before I bolted the block halves together. It was said that the mains were a liiiiitle on the large side, rods being spot on. This isn't a performance build just an old car I wanted to try some shortblock work on.

No mods on the car, cleaned the oil pump, checked clearances, lubed + installed that's it.
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Old 10-13-2012, 04:36 PM   #7
lavid2002
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18.5lb. 93 oct, DP, UP

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The engine is smoking like a motha' I read it's going to smoke until I seat these rings. Is this true? It's smoking quite a bit.

I think I will be forced to register + insure it and drive it around until it is broken in, or until I have conclusive evidence that the engine is not going to run right.
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Old 10-13-2012, 04:48 PM   #8
RaceFaceXC
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How did the replacement of the valve seals and guides go? What was your ring gap clearance? It shouldn't smoke heavily out of the exhaust but a bit on cold starts might be ok at first.
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Old 10-13-2012, 05:01 PM   #9
lavid2002
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Ring gap clearance was at the upper end of the spec in the book, literally the highest number. I found that on a feeler gauge, and the ring would rub the feeler gauge. Mostly all were like this.

I didn't replace the valve guides they seemed fine. I did replace all the valve seals, that went smoothly. Just like normal.

I think I might wait until very late and I'll take her for another spin to see if she's really dumping smoke or if it's just a one time thing.
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Old 10-13-2012, 11:19 PM   #10
rhino6303
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I am curious how you did the initial startup? Did you idle it at around 2k for 20-30 minutes before driving?
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Old 10-14-2012, 06:51 PM   #11
lavid2002
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Nope, was this what's supposed to happen? I thought this was a recipe for glazed over cylinder walls. I started it and idled it for about 2 minutes then shut it off.
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