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Author Topic:   Proper Break-In Procedure!!!!
MandarinaMustang
Gearhead

Posts: 141
From: San Jose, Costa Rica
Registered: Jun 2002

posted 09-07-2002 07:54 PM     Click Here to See the Profile for MandarinaMustang   Click Here to Email MandarinaMustang     Edit/Delete Message   Reply w/Quote
Hi y'all....I have a very good question...hopefully I'll get a lot of input from all of you...

WHAT IS THE PROPER WAY TO BREAK IN A NEW ENGINE????

Alex

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steve'66
Gearhead

Posts: 9533
From: Sonoma,CA,USA
Registered: Mar 2000

posted 09-07-2002 08:59 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Solid or hydraulic cam Alex?

After the cam break-in don't be afraid to run it semi-hard, just limit the rpms. Definately do not go on a 500 mile road trip with steady cruise rpms. You need to seat the rings with accel. and decel.

Race engines on non street cars get no street break-in time at all, just a couple of short shifting 1/2 passes.

SteveW

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MandarinaMustang
Gearhead

Posts: 141
From: San Jose, Costa Rica
Registered: Jun 2002

posted 09-07-2002 09:11 PM     Click Here to See the Profile for MandarinaMustang   Click Here to Email MandarinaMustang     Edit/Delete Message   Reply w/Quote
Hydraulic....

more, more....keep 'em comin'.....

Alex

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jsracingbbf
Gearhead

Posts: 2954
From: Batesville,MS. , U.S.A.
Registered: Mar 2002

posted 09-08-2002 01:14 AM     Click Here to See the Profile for jsracingbbf   Click Here to Email jsracingbbf     Edit/Delete Message   Reply w/Quote
Prime it with a drill before you crank it, also turn the crank while you do this. I know this isn't break in, it's basically prelube, but i just didn't want you to forget that part. good luck


------------------
Jerry Smith
69 Mustang Pro ET Drag
70 Mustang retired former footbrake car
"Only Lil boys wear Bowties"

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Scott (69Mach)
Gearhead

Posts: 796
From: Walnut Creek, CA USA
Registered: Jun 99

posted 09-08-2002 01:49 PM     Click Here to See the Profile for Scott (69Mach)   Click Here to Email Scott (69Mach)     Edit/Delete Message   Reply w/Quote
I ran mine from 2,000 to 3,000 rpm for 20 minutes with a fan in front of the radiator to keep things cool. Took out the inner valve springs to keep loads lower on the lobes until they set. Vary the rpm up and down during the breakin. Don't let it idle.

After that, 250 miles at <4,000 rpm without the inner springs. After 250 miles, put the inner springs in and ran it as hard as I wanted.

Changed oil after initial and at 500 miles.

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V8 Thumper
Gearhead

Posts: 4681
From: Phoenix, Arizona
Registered: Dec 2001

posted 09-08-2002 05:05 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
I'd only add that I ran 30W ND (non-detergent) oil for my cam break-in. Scott(69 Mach) spelled out my identical break-in with removal of inner valvesprings and a few hundred miles of 'easy' driving. Your cam/valvesprings may not require this procedure, contact your cam manufacturer for specific break-in info

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MandarinaMustang
Gearhead

Posts: 141
From: San Jose, Costa Rica
Registered: Jun 2002

posted 09-08-2002 05:27 PM     Click Here to See the Profile for MandarinaMustang   Click Here to Email MandarinaMustang     Edit/Delete Message   Reply w/Quote
Well the reason I asked is because I'm buying a new car and wanted to know the proper way to break the engine in....all the techniques you guys describe are very good, but how could I apply them????

Alex

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V8 Thumper
Gearhead

Posts: 4681
From: Phoenix, Arizona
Registered: Dec 2001

posted 09-08-2002 05:49 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
A new car, you mean NEW straight from the dealership? New car engines are run in at the factory, just get in and drive

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MandarinaMustang
Gearhead

Posts: 141
From: San Jose, Costa Rica
Registered: Jun 2002

posted 09-08-2002 06:56 PM     Click Here to See the Profile for MandarinaMustang   Click Here to Email MandarinaMustang     Edit/Delete Message   Reply w/Quote

yes straight from the dealership! Well at least I have good info for the future!

I'm gonna dig a hole now and stick my head in it.

Alex

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