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| Rocky | New motor break in | ||
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Guru Newb
 
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[font=Comic Sans MS:8c8f0a7827] [/font:8c8f0a7827][color=blue:8c8f0a7827] [/color:8c8f0a7827]I am getting all info together now so I am ready to break in the cam, then seat the rings. I've read to run the engine at 2000 rpm for 20 minutes for the cam, then change oil and filter. I also have a new tranny, so my thought is to shift it thru all gears while warming engine to take out and seat the rings.
How does this sound? Am I missing anything? TIA Tom 84 almost done! |
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Posted on: 2007/2/10 17:46
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84 Corvette under reconstruction. New crate motor, new to me Pete Kane 700r4 and TC. Detailing everything as I go. |
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| bogus | RE:New motor break in | ||
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Grand Imperial Pooh-Bah
 
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I think this has been answered over at CF.
The thread that links you to the motorcycle guy, that's who I agree with. Break in is a rather nebulous term. The bearings are hydrostatic - they float on oil... no break in there. The cam is a little of both, and that's why there might be a break in required, check the cam specs. The key is setting the rings. Thanks to harder metals, it's much more sensative to break in. Your window of opportunity is limited. From what I remember on that link, the idea is to load the engine, which will increase combustion pressures and force the rings to spread and seat where they belong, not too high on the groove or what not. |
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Posted on: 2007/2/11 21:20
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| hulagan808 | Re: New motor break in | ||
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Guru
 
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A roller cam needs no break in and do not let idle for long, drive between casual and mildly hard in order to seat the rings. Aloha
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Posted on: 2008/6/30 21:12
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88 vert, gen 7, superram, blah blah blah for days 
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| Notorious | RE:New motor break in | ||
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Elite Guru
 
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Quote:
Also back down the engine under load during break-in as this loads the rings in the other direction too. I usually do about 10 WOT bursts and let the engine brake the speed back down between each one. I've broken in many, many engines this way and have never had a problem seating rings. |
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Posted on: 2008/6/30 23:16
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I hate sporks... |
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| LD85 | RE:New motor break in | ||
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Master Guru
 
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 Yep, all of the above,, accelerate hard to 5000rpm or so (expand the rings) then decell, then accelerate again to expand the rings, then decell,,,,do this 4-5 times or more, then change the oil. |
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Posted on: 2008/7/1 0:48
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2005/Z51 |
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