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Forged motor break-in procedure?

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Old Aug 4, 2003 | 02:06 PM
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blu00rdstr's Avatar
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Default Forged motor break-in procedure?

About to assemble my forged 347, what's the break-in procedure?

Non-synthetic oil?
RPMs below a certain level?
Vary rpms?
Boost below a certain level?
How many miles for break-in?
When to change oil?
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Old Aug 4, 2003 | 02:30 PM
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30thWS6's Avatar
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Default Re: Forged motor break-in procedure?

All of the above. Change oil at 500 miles. Break in time depends largely on the type of rings you used and the RMS of the cylinder crosshatch.
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Old Aug 5, 2003 | 09:25 PM
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Default Re: Forged motor break-in procedure?

Thank you.
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Old Aug 6, 2003 | 04:02 AM
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Default Re: Forged motor break-in procedure?

I agree with what 30thWs6 said.
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Old Aug 6, 2003 | 09:40 AM
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Default Re: Forged motor break-in procedure?

um, leave the boost out of the equasion until the rings seat in. you'll have a tough time with making a good seal otherwise. should only take about 2-3 weeks of normal driving. and after the oil change, (back w/ non-synthetic the first change, synthetic when your 125% sure the rings seated.) put the bost to it and start flyin
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