Engine/Turbo break-in?

ChevelleDude71

Lo Boost
Okay so i searched and couldn't find a real answer to this question so I'm going to throw it out there.
My question is I'm going to be starting my syclone soon, (once I get the turbo) and I have done many new engine start-ups/replacments in the past, but none involving a turbo. So I'm wondering if there is anything specific I should do to break in the engine, and newly rebuilt turbo? My Boss said every old V8 chevy he has built he sent it to red line with-in the first few seconds of starting it. he calimed that if it was going to break it was going to break, so if something goes wrong then you didn't put it together right......I have never agreed with this and always taken care of the vehicle for the first 1,500-3,000 miles before I smashed on the engine. My co-worker says that he would go on the freeway and bring the vehicle up to (giving a little boost) 75 then coast down to 50 then slowly bring it up to 75 again, the coast....ect just to seat the rings then hit it after 3,000 miles of this. I remember back when I had my chevelle I didn't go over 3000 RPM's until 5,000 miles in fear of any damage to that new engine. What I have done to the truck is in my siginature and I'm running castrol 10w30 for the first 500 miles to help with break in, then switching to mobil 1 5w30 synthetic for the remainder of the life of the truck. so any suggestions are welcome. I know everyone will have a different outlook on this subject but I'm just paranoid about this truck, building it for a year and all, and want to break it in right so I can get to the track soon.
Thanks
 

4C FED

Absolutum Dominium
Re: Engine/Turbo break-in?

http://www.syty.net/forums/showthread.php?t=2575&highlight=start
First off, I like to keep a fire extinguisher nearby....just in case.
Use non-synthetic oil, good ol' dino oil to start with. Or I was told by one builder that he used a synthetic blend for startup. I think most go with the regular oil for startup & break-in.
Disconnect the coil wire & turbo oil feed line @ the turbo.
Stick end of feed line into a bottle or bucket that you can see into
Crank motor until oil squirts out feed line.
Re-connect feed line.
Start her up.
Warm up to normal operating temp. ~10-15 minutes. Watch for leaks during this time, set timing, adjust valves if needed, etc.
Turn it off & drain oil & change filter.
Re-fill with clean oil & install new filter.
Drive away, stay close to home (just in case it breaks), take it easy for the first 500 miles (low boost).

I'll add this for expert reference material:
http://www.syty.net/forums/showpost.php?p=489665&postcount=15
 
Last edited:

sharkbait

New member
Re: Engine/Turbo break-in?

after they brake in the cam when on a dyno, they go right to wot runs. but im one of those baby it for 1000 miles.
 

Don W.

Stab it and steer it
Re: Engine/Turbo break-in?

And my :2cents: would be:

The turbo itself doesn't need to be "broken-in." Prime engine oil system with either the correct tool in the dist hole (So oil passages are blocked like a real dist. and pressure builds throughout the engine.) or cranking engine with plugs out 'till you have oil pressure. Leaving oil line to turbo off and in jar is a great idea as it flushes the line of any dirt remnants. Dirt is murder on turbo bearings. I'd use 10w30 non synth oil. Fire eng and check for leaks etc. Drive like you said to break in rings. The rings need so see short periods of high cyl pressure to break-in correctly. Follow cam mfg recommendations for install and break-in. Everything else, meaning bearings, doesn't need to be broken-in.

Just my :2cents: on this endless debate...

I've seen photos of a GM building full of engines being "broken in." Not any more. Fire that puppy and drive away. I would love to tour Cummins or Cat and see if/how they break-in their big engines.
 

Tooky

Serious about performance
Re: Engine/Turbo break-in?

For the BEST article on this topic, see http://www.mototuneusa.com/break_in_secrets.htm

It's more than just a guide to Engine Break-In Secrets... It's the best damn web site I have EVER read in my entire life!!! MotoTuneUSA.com literally changed my life by opening my eyes, and I would encourage any truth-seeker to read every one of the 24 issues of "Power News".....at least twice! (especially the last 4-5 issues and the one on Circular Logic)

PowerTunePlus was inspired by MotoTuneUSA!
 

JuStBlAzIN

Active member
Re: Engine/Turbo break-in?

Tooky said:
For the BEST article on this topic, see http://www.mototuneusa.com/break_in_secrets.htm

It's more than just a guide to Engine Break-In Secrets... It's the best damn web site I have EVER read in my entire life!!! MotoTuneUSA.com literally changed my life by opening my eyes, and I would encourage any truth-seeker to read every one of the 24 issues of "Power News".....at least twice! (especially the last 4-5 issues and the one on Circular Logic)

PowerTunePlus was inspired by MotoTuneUSA!

That is a new favorite website.
 
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