Duncan Mould
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| posted on 12/6/08 at 10:32 AM |
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tips on running engine in
Hi just rebuilt my dads 1600 xflow engine and fitted new everything including pistons. Its running lovely now.
Have not taken it over 3000rpm yet and completed nearly 500 miles, any hints or tips would be greatfully appreciated.
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andyharding
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| posted on 12/6/08 at 10:54 AM |
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Get your popcorn out....
This is how I ran my pinto in...
Fill with basic mineral oil i.e. the stuff for classic cars as this isn't very slippery.
20 mins @ 2000 RPM to run in new cam.
Then limit RPM to 1000 RPM short of redline. Use all available rev range and max throttle opening as much as possible. I.E. don't let it coast
at constant RPM slow down and then floor it back to the speed you want. Do this for 150 miles. This will bed in the rings properly.
Change oil for semi-synthetic. Stick to 1000 RPM below redline until 500 miles reached.
Change oil for full synthetic. Thrash the poo out of it 
Are you a Mac user or a retard?
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ravingfool
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| posted on 12/6/08 at 10:54 AM |
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make sure you check the head is correctly torqued now you've done 500 miles, as the gasket will compress and likely need tightening. If it does
need tightening the tappets will need adjusting again.
I'd just try and take it easy for a little longer if I was you, although I am physically incapable of following that advice myself
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ash_hammond
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| posted on 12/6/08 at 10:55 AM |
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I found short trips, variable speeds and gradually increasing the revs works fine.
Once thats over ring its fu!king neck down the local bypass to double check then smile....
.: www.mac1motorsports.co.uk | www.m1moc.com :.
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bilbo
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| posted on 12/6/08 at 11:04 AM |
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If you fancy a long read, there are plenty more opinions here:
http://www.locostbuilders.co.uk/viewthread.php?tid=21675
---------------------------------------
Build Diary: http://bills-locost.blogspot.com/
Web Site: http://locost.atspace.com
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britishtrident
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| posted on 12/6/08 at 11:13 AM |
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The days of low rpm to run in bearings are long gone , the priority should be ensuring the piston rings bed in to the bores properly.
Avoiding excess load on the pistons caused by letting it labour at low rpm , let the engine spin freely -- keep the engine spinning -- while not
using excessive revs.
During initial running in a short burst of higher rpm followed by lifting off helps get oil up the bores to lubricate the rings and reduce piston
temperature.
[Edited on 12/6/08 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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02GF74
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| posted on 12/6/08 at 11:57 AM |
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What's The Best Way To Break-In A New Engine ??l
The Short Answer: Run it Hard !
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miikae
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| posted on 12/6/08 at 12:18 PM |
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quote:
Originally posted by 02GF74
What's The Best Way To Break-In A New Engine ??l
The Short Answer: Run it Hard !
Just beat me to it
Mike
If it can be done it i will be done .
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TOO BADD
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| posted on 12/6/08 at 01:50 PM |
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Agree run it hard and use running in oil. Even the cheap oils are too good now to use.
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Duncan Mould
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| posted on 12/6/08 at 06:00 PM |
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Sounds good lots of hints and tips.
Many thanks.
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