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New engine Break in Procedures?

 
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Old 21 Mar 2019, 11:50 am
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Default New engine Break in Procedures?

2003, 2.4L NA manual trans.

Iíve got the new short block and the engine build is almost complete.

I am using a rebuilt cylinder head and a new Mopar short block.

Any other new or rebuilt engines Iíve done in the past came with specific break in instructions for that engine, this short block did not come with any, Iíve searched and not found anything specific to these engines.

Since I am using the cams, followers and all the hardware that is original to the head I donít think there should be any type of break-in needed for the cams.

What if any break in procedures should be followed for the new short block?

Generic procedures would say to use 5w30 conventional high Zinc oil and some break in additive,
Bring it up to temp, Run varying between 2000 and 3000 RPM for 20 minutes and then change the oil, then drive moderately for 300 to 500 miles, change the oil again, then drive as you would normally.

Anything else I should be aware of with these engines?








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Old 21 Mar 2019, 01:42 pm
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Default Re: New engine Break in Procedures?

Quote:
Originally Posted by Peterbylt View Post
2003, 2.4L NA manual trans.

I’ve got the new short block and the engine build is almost complete.

Peter
You'll be fine. Can I get your drain oil to top up mine? How much does a short block cost? Send a private message if you don't want to post it.

Last edited by circus; 21 Mar 2019 at 01:45 pm.
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Old 21 Mar 2019, 05:50 pm
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Default Re: New engine Break in Procedures?

I would simply use normal synthetic oil only of your choice and change it out at about 3000 miles. Then again at about 7-10 k miles.

Unless you know exactly the rings and final hone used with specif break in recommendation it is "OLD SCHOOL" method of break in.

I would recommend you try to contact where you got the short block from and ask them. Also completely read the warranty information.

Good luck with your new "mill"!
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Old 21 Mar 2019, 05:51 pm
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Default Re: New engine Break in Procedures?

For piece of mind on the life blood of any engine I did the BIG oil filter conversion on both my cars...look it up. Cheap enough and easy to do since the engine is out. I run a Mobil M1-301A mongo filter with no issues. Twice the filter capacity and extra oil volume. Small or mongo filter all the same price.
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Last edited by My02RedRide; 21 Mar 2019 at 05:53 pm.
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Old 21 Mar 2019, 08:40 pm
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Default Re: New engine Break in Procedures?

A friend rebuilt a diesel from an old combine. Spent days r&r, $8000, oil light glowed but he didn't heed. Spent another $8000 rerebuilding it. Harvest came and went, no combine.

Moral: Assume gauges (idiot lights) are working.
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Old 21 Mar 2019, 09:55 pm
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Default Re: New engine Break in Procedures?

Quote:
Originally Posted by circus View Post
You'll be fine. Can I get your drain oil to top up mine? How much does a short block cost? Send a private message if you don't want to post it.
This is where got the Short Block.

https://www.ebay.com/itm/Engine-Shor...cf4e%7Ciid%3A1


The Shortblock is a New old stock that I got off of Ebay, no warrantee no documentation.

It is an official Chrysler, MOPAR new SHortblock, not rebuilt.


You would think I could find documention and breakin procedure for that, I could find nothing.


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Old 21 Mar 2019, 10:07 pm
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Default Re: New engine Break in Procedures?

...


I would simply drive it normally, try not to get into any drag or road racing for at least a few thousand miles.

I would NOT worry about to many deep thoughts about a break in procedure beyond that and changing the oil/filter Like I suggested?
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Last edited by NitroPT; 21 Mar 2019 at 10:22 pm.
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Old 21 Mar 2019, 10:19 pm
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Default Re: New engine Break in Procedures?

Nice. I'm jealous, darn, my car's off by one year. Worth it even if the old engine wasn't toast.
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Old 21 Mar 2019, 10:28 pm
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Default Re: New engine Break in Procedures?

Quote:
Originally Posted by circus View Post
Nice. I'm jealous, darn, my car's off by one year. Worth it even if the old engine wasn't toast.
It is a good price on the short block for sure.
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Old 22 Mar 2019, 08:15 pm
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Default Re: New engine Break in Procedures?

I'm with Nitro on this one. Just take it easy for the first couple of thousand miles and drive it as you normally would. BUT as he stated, no drag racing for a while.
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