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Tips on breaking in engine

  • Thread starter Thread starter 66moneypit
  • Start date Start date Apr 21, 2005
6

66moneypit

Member
Dec 28, 2004
536
0
17
Northern Va
Apr 21, 2005
#1
  • Apr 21, 2005
  • #1
Heard a few things but I'd like to ask the experts.... (and it might not clear a thing up)

What's the best way to break an engine in. It's running and I let it idle for a minute or so but haven't driven it yet.
 

DarkoStoj

Founding Member
Sep 4, 2002
929
13
39
Detroit
Apr 21, 2005
#2
  • Apr 21, 2005
  • #2
nuff said

http://www.mototuneusa.com/break_in_secrets.htm
 

69Rcode_Mach1

Active Member
Apr 20, 2004
1,473
1
37
Salt Lake City, Utah
Apr 21, 2005
#3
  • Apr 21, 2005
  • #3
Exactly what that link says. Make sure to clearance your bearings though. If they are not clearanced properly oil flow will be limited and could fry the engine. Also remember to let the ENGINE WARM UP before you get on it. I would recommend having some friends or something go in front of you and having a cop watch you will be going pretty fast doing that break in procedure. It is proven to be the best and is how I plan to do it when I am done at the end of may or so.
 
6

66moneypit

Member
Dec 28, 2004
536
0
17
Northern Va
Apr 22, 2005
#4
  • Apr 22, 2005
  • #4
69Rcode_Mach1 said:
Exactly what that link says. Make sure to clearance your bearings though. If they are not clearanced properly oil flow will be limited and could fry the engine. Also remember to let the ENGINE WARM UP before you get on it. I would recommend having some friends or something go in front of you and having a cop watch you will be going pretty fast doing that break in procedure. It is proven to be the best and is how I plan to do it when I am done at the end of may or so.
Click to expand...

That definitely goes against the grain of what I have been reading. I would think it might be different with older engines...but I am by no means an expert.
 

6Stang7

New Member
Jun 1, 2003
1,470
0
0
Livermore, CA
Apr 22, 2005
#5
  • Apr 22, 2005
  • #5
nope, do difference. just do the 20 high idle for you cam if you have a tappet cam. other then that, run the piss out of the motor. my boss did that with the race 347 we built and it has yet to have a problem. he also used synthetic from the get go, so that dispells another myth in my mind.
 

Hack

15 Year Member
Mar 23, 2004
1,945
13
69
Minneapolis
Apr 22, 2005
#6
  • Apr 22, 2005
  • #6
6Stang7 said:
nope, do difference. just do the 20 high idle for you cam if you have a tappet cam. other then that, run the piss out of the motor. my boss did that with the race 347 we built and it has yet to have a problem. he also used synthetic from the get go, so that dispells another myth in my mind.
Click to expand...
Yeah that's the one thing that bugs me about that article, nothing about cam break in.

Unless you have a roller cam, you need the 20 minute cam break-in, right?
 

Route666

Active Member
Aug 16, 2003
1,652
6
39
Brisbane, Australia
Apr 22, 2005
#7
  • Apr 22, 2005
  • #7
Yep hack that's right. You can think about engine break in by thinking about well built performance motors, by that I mean ones with gas-porting and lower-tension rings. The rings by their own tension don't push hard enough to break themselves in, and the point of gas-porting is to make the combustion pressure more effective at sealing the chamber while dragging less on strokes without pressure. So the only way a motor like that is going to break in is with some load on it. The principles on cylinder sealing are still the same in stock setups, but ring tension is greater and so it is less important to run so much load through it as the rings contribute more to the break in force required.
 
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