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hippy
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7,682 Posts
im a big believer that the new improved makeup and quality materials used to make engine parts nowadays,and the process's used to machine things are so much better these 1000 mile break periods in 40+ year old style are a little over the top
ive been involved in a few builds that have been run for 50 miles or so,change the oil,and then use it hard,none have failed yet
i know plenty of people that have done a haynes manual type build and broken something or been a bit low on power after spending so long fannying around at low rpm ect ect for ages

brilliant in my book
 

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AKA RSP
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4,762 Posts
I have run a few cars in this way and had no problems :) I do not normaly go full out on the boost though. Say 1 bar on a car thats going to run 1.5+ and once its got a few more miles done we would then turn the boost up.

Richard
 

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Seasoned Member
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4,032 Posts
i cannot comment with certainty on light petrol engines but this is certainly the best way to bed in most of the deisels we rebuild,if the engine is allowed to idle and chug along too much it will never bed the rings in correctly and in the case of any engines ive worked on burn oil and send it neat out the exhaust even.if i have cause to rebuild my own engine i will opt for a similar method,like the rsp guys say probably on a lower boost
 

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Administrator
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25,962 Posts
brian/tfs/paris hilton run in his rebulit engine in around 10 miles :rofl:
 

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Taking control of the drum machine
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835 Posts
I've known a few DIY builders and 1 shop builder to follow this method years ago - all positive.

And I've known other DIY builders use the 500~ mile steady technique and the engine has never ran right. My old Escort, the prev owner had the engine rebuilt professionally, ran the thing steady over 500 miles - it lost a lot of power (which I could never figure why until rebuilding it myself).

That said - another had his rebuilt and ran steady for 500~ miles, ran spot on.

So it looks like there's less time to screw up with the quick method!

It's been tried and tested from what I've seen - I'm happy.
If it's done right, it'll work perfectly.
 
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