First, a question, often answered here, but I haven't a archive.
Good engine break-in (post rebuild) routine?
Flash back to last May, a beautiful morning, cruising down Hwy 400 inAtlanta to work. Coasting down the hill to the tollbooth, I notice the tempunusually high, climbing visibly. Hmmm. Pay the toll, and accelerate up thehill on the other side. All the sudden, I have no power, and theengine...oh, man...it's running, but, oh man....it sounds like a cardboardbox full of broken glass. Manage to drive it to the next exit. It diesunless I'm at almost full throttle. Have to start it twice, get it into theparking lot at Home Depot, and call AAA. Goes to local shop, motor comesout. Looks fine on the outside. Oil smells burnt, but otherwise, fine.Opinions abound as to what's happened. Take the motor to a rebuilder someonerecommended. Who will remain nameless as of yet.
So I go to the shop when they start tearing it down. Out comes the oil(ooooogh.) Off comes the screen. It is full of shredded main bearing. (Soundof cash register here: "cha-ching!") I can't bear to watch, and leave. Hecalls me later with the diagnosis, which I can barely hear through the"Cha-Ching!!!s" Busted crank. Case- total loss. Spun main bearing. Bent rod.Basically, start over.
We come up with a plan, and I wait. Just got my motor about a week ago. 912case, big bore. Slightly warmed street cam, lightened flywheel, Webers. Wentinto the car day before yesterday. They ran it for a couple of hours on thetest stand, and report it to be "a powerful little mother" I get in, crankit up, and get a quarter of a mile before it starts missing. Several mileslater it's running on 3, then 2, then 3. Awww, damn.
Get home, pull the plugs, the first two are black as night. The third wasmysteriously missing its washer, and the gap was ZERO. That explains a lot.Check the jets for clogs, and make some calls. (thank you, Fellman andPellow) general diagnosis was that it's either running too rich or thatbecause it's so new, the rings aren't yet doing their thing, so I'm burninga little oil, which is fouling the plugs (which I believe is the culpritnow) I'm told, wait and see until you've got a hundred, one-fifty miles onit, and it'll clear up.
So tonight I picked up some shorter/hotter plugs, and put them in (achingback, hamstrings, skinned knuckles) Fire her up. Other than some valveclatter, it's purring. Take her for a couple of laps of the neighborhood,real easy. Running nice. Get brave, drive the twenty minutes to my parent'shouse, again, real easy. Running nice. Get there, have a snack, goodnightfolks, climb in....
Click. Battery's dead. Awww man. If it's not one thing...you know the rest.
After all, the car DID sit for three months. Ugh. Hooked up the charger,hitched a ride home, and checked my e-mail. I'll let you know tomorrow if itstarts.
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