Best Engine break-in procedure?
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Best Engine break-in procedure?
Like title says. I've gotten so many versions over the years...wondering what the forum members recommend? Oil viscosity? Brand? Time factors? Distance? Load? :chevy
[Modified by GRX, 8:55 PM 12/19/2002]
[Modified by GRX, 8:55 PM 12/19/2002]
Team Owner
Joined: Sep 2001
Posts: 62,142
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Best Engine break-in procedure? (GRX)
the break-in procedure varies from builder to builder, and you should ask one of the local builders for his procedure. This is just one i heard:
put in a thicker oil, like 20w50 dino
cam break-in is usually 15min at 2000rpm, some builders will immediately change the oil
500mi, change
another 500mi and change to your regular oil
put in a thicker oil, like 20w50 dino
cam break-in is usually 15min at 2000rpm, some builders will immediately change the oil
500mi, change
another 500mi and change to your regular oil
Melting Slicks
Joined: Apr 2002
Posts: 3,019
Likes: 0
From: down that one road next to that big tree
Re: Best Engine break-in procedure? (vader86)
everyone has a different oppinion, the one i was told was use 5-30w dino, warm the engine up to operating temp and go stand on it.
Drifting
Joined: Aug 2000
Posts: 1,521
Likes: 0
From: West Islip New York
Re: Best Engine break-in procedure? (GRX)
Maybe not the best, but the way I do it ----
Use the oil (dino) weight spec'd for the engine, nothing heavier, you don't want to starve anything for oil on the first start, even if primed before hand.
Roller cams don't need a break in, but I still run for 15-20 minutes at 2000 rpm.
Change the oil and filter. Change oil and filter every 500 miles, still using dino for 2000 miles. After 2000 switch to Mobil 1.
I take it real easy the first 500 miles and don't crazy for the first 2000. Yeah this is conservative, but nothing is better than a slow break in.
Use the oil (dino) weight spec'd for the engine, nothing heavier, you don't want to starve anything for oil on the first start, even if primed before hand.
Roller cams don't need a break in, but I still run for 15-20 minutes at 2000 rpm.
Change the oil and filter. Change oil and filter every 500 miles, still using dino for 2000 miles. After 2000 switch to Mobil 1.
I take it real easy the first 500 miles and don't crazy for the first 2000. Yeah this is conservative, but nothing is better than a slow break in.
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Race Director
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Re: Best Engine break-in procedure? (GRX)
5-30 dino Drain after the first day, 5-30 dyno drain after 500 miles 5-30 dino 3000 miles then Mobil one after that. You will get several answers. mine has not used a drop after 4k miles
Le Mans Master
Joined: Jun 2002
Posts: 6,097
Likes: 0
From: High Plains Drifter Fayetteville, AR
Re: Best Engine break-in procedure? (gtsyellow)
everyone has a different oppinion, the one i was told was use 5-30w dino, warm the engine up to operating temp and go stand on it.
Check out this page: http://www.mototuneusa.com/break_in_secrets.htm
Hope you enjoy your new engine!
J :cheers:
Burning Brakes
Joined: Oct 2002
Posts: 1,152
Likes: 1
From: Wichita KS
Re: Best Engine break-in procedure? (JCAIRE2)
I've seen that Moto-Tune site before and it is spot on; :iagree:
As a matter of fact I followed his spec's to the "T" with excellent results.
Cyl pressure = ring seating.... :yesnod:
As a matter of fact I followed his spec's to the "T" with excellent results.
Cyl pressure = ring seating.... :yesnod:
