How Do I Break In My Engine?

Mike Hadz · January 5th, 2012, 05:51 AM

Gonna be getting a new MMR short block Cammed/possibly headed

(i know the standard, don't step on it drive it soft for 1500 miles or so method, figure you guys have more knowledge to offer to me)

The question i bring upon you is... what is the best method to breaking in an engine for durability and power down the road?

Thnx a ton ~ Mike!

NickPohlAandP · January 5th, 2012, 07:52 AM

When you get your engine from MMR it will have a sheet with it that has the suggested break in procedure.

SSG Pate · January 5th, 2012, 08:38 AM

Mike Do 20 WOT pulls then drink about 10 beers and repeat LOL just kidding!! Do exactly what MMR tells you so that your warranty stays in TACT. If I can remember dont go over 4000rpm, dont go into boost, change oil after 500,1500, then start normal oil change intervals. But to be certain use thier sheet like Kick said. your Going to relaly like your engine they are tough.

CobraStang161 · January 5th, 2012, 11:31 AM

personally i have found the best way to break in a motor is beat the ever loving piss out of it. Have done that with all my motors i built and they are all running strong to this day

dhicks7806 · January 5th, 2012, 11:48 AM

Originally Posted by CobraStang161

personally i have found the best way to break in a motor is beat the ever loving piss out of it. Have done that with all my motors i built and they are all running strong to this day

+1 I too have used this method, but if purchasing from MMR I would follow their instructions for warranty purposes I guess...although to properly seat the rings, the motor needs to see a variety of RPM/load combinations much like it will during
Normal operating conditions. Also one of the most important parts is engine breaking (downshifting to slow down). Engine break in is a topic that always offers different opinions and experiences, but the short answer is to follow your engine builders advice. I have never built a modular but I have used the beat the piss out of it method on many 4 and 6 cylinder motors as well as 4 wheelers and snowmobiles. It has NEVER failed me. If fact it usually yields better compression than others because it allows the rings to fully seat.

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T-Lee. 30 · January 5th, 2012, 01:36 PM

[QUOTE=dhicks7806;4184912
Normal operating conditions. Also one of the most important parts is engine breaking (downshifting to slow down). [/QUOTE]

So is it good or bad to do engine breaking while breaking in an engine?

saxmanJJ · January 5th, 2012, 01:36 PM

The shop that put in my new shortblock has a procedure to break in a new shortblock/engine on their dyno. I think he said it takes about a half an hour to complete. After he did the break in procedure, he had it on the dyno for about 4 hours, with plenty of WOT runs, to dial in the tune. He said I could immediately take the car to the track when I left his place.

dhicks7806 · January 5th, 2012, 01:45 PM

Originally Posted by Rockwell29

So is it good or bad to do engine breaking while breaking in an engine?

IMO its a crucial part of break...along with varying RPM/load combos

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dhicks7806 · January 5th, 2012, 01:47 PM

Originally Posted by saxmanJJ

The shop that put in my new shortblock has a procedure to break in a new shortblock/engine on their dyno. I think he said it takes about a half an hour to complete. After he did the break in procedure, he had it on the dyno for about 4 hours, with plenty of WOT runs, to dial in the tune. He said I could immediately take the car to the track when I left his place.

Pretty much...I would change the oil after and then after another 150 miles an then every 500 until I hit 1,500 then switch to normal intervals. I would also use Dino oil until after 1,500 then I switch to synthetic.

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T-Lee. 30 · January 5th, 2012, 01:54 PM

Originally Posted by dhicks7806

IMO its a crucial part of break...along with varying RPM/load combos

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Oh ok gotcha.

OP get an oil drain plug with a magnet on it also they are like $8 on ebay. It will help a bit with any metal particles that are floating around in your oil during break in. And dont go with a cheap oil filter either.

dhicks7806 · January 5th, 2012, 02:00 PM

Hey saxman how's your motor holding up after that break in? Run like a raped ape? Have any blow by issues? The only thing I ever to "baby" my motors was keeping boost relatively low for about a 1,000 miles but even that may not be necessary after the rings are seated fully...

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Mike Hadz · January 5th, 2012, 02:05 PM

sounds more fun then i thought it would be so far

03_StangGuy · January 5th, 2012, 02:05 PM

You'll get a million different answers from a million different people. Bottom line is do whats necessary for the warranty and know that the engine needs pressure to seal the rings. Driving too light will hurt power and efficiency.

Mike Hadz · January 5th, 2012, 07:18 PM

Originally Posted by 03_StangGuy

You'll get a million different answers from a million different people. Bottom line is do whats necessary for the warranty and know that the engine needs pressure to seal the rings. Driving too light will hurt power and efficiency.

yeah i think i know what i wanna do, + whatever warranty calls for.

T-Lee. 30 · January 5th, 2012, 07:20 PM

Originally Posted by Mike Hadz

yeah i think i know what i wanna do, + whatever warranty calls for.

They have a shortblock that mmr pointed out to me today on another thread its an mmr500 good for 500rwhp its $1599 alot cheaper than the other shortblocks. its usually $2199 its on sale right now http://www.modularmustangracing.com/

mustanginky · January 5th, 2012, 07:48 PM

how the hell would mmr know what rpm range you took it up to? they have no way to prove or disprove that without some sort of electronic device on your car.

from all my research, you want to introduce lots of engine breaking and lots of varying rpm/loads to give the rings a chance to seat. don't beat the heck out of it IMO but take it up to high rpm's with moderate load, and get on it alot at low rpm's.

put fresh dino oil in it off the bat, change it after your initial drive (maybe 5-7 miles of varying rpm and stop and go), drive about 150 more, change the oil, drive 1000 and change it. i'm about to change mine here shortly and i've got around 700 miles on it.

CobraStang161 · January 5th, 2012, 08:08 PM

I built my motor for my car and took it straight to the dyno. Made 847rwhp on a brand new engine. I find it stupid that a company makes you baby an engine when it's built to have the shit beat out of it. A company should feel confident in their products.

T-Lee. 30 · January 5th, 2012, 08:09 PM

Originally Posted by CobraStang161

I built my motor for my car and took it straight to the dyno. Made 847rwhp on a brand new engine. I find it stupid that a company makes you baby an engine when it's built to have the shit beat out of it. A company should feel confident in their products.

Brand new crotchrockets have a break in procedure also. And those things can bake your legs ridint around babying it. But you see the temp drop quite a bit once you get it open and running.

Nitmare67 · January 5th, 2012, 08:21 PM

I run a base tune for about 50 miles then break them in under boost on the dyno. Rings seat great under boost

dhicks7806 · January 5th, 2012, 08:58 PM

Originally Posted by Rockwell29

Brand new crotchrockets have a break in procedure also. And those things can bake your legs ridint around babying it. But you see the temp drop quite a bit once you get it open and running.

Most of my friends ignore that as well and ride their bikes like they're built to be ridden from the showroom floor.
Have you ever seen two identical vehicles or bikes that are in the same condition, and one pulls better than the other? I honestly believe this is based on the break in. The guy that drove it hard and seated the rings right has better compression and VE.

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January 5th, 2012, 05:51 AM	#1
Mike Hadz Regular 2000 Gt Join Date: Dec 2011 Location: San Diego Posts: 498 iTrader: 0 reviews	How Do I Break In My Engine? Gonna be getting a new MMR short block Cammed/possibly headed (i know the standard, don't step on it drive it soft for 1500 miles or so method, figure you guys have more knowledge to offer to me) The question i bring upon you is... what is the best method to breaking in an engine for durability and power down the road? Thnx a ton ~ Mike! __________________ 2000 Gt - full bolt on's 3.73's eibach suspension. 265hp/307tq Last edited by Mike Hadz; January 5th, 2012 at 06:02 AM.

January 5th, 2012, 07:52 AM	#2
NickPohlAandP I like boobs!!! 2000 GT convertible dunno Join Date: May 2011 Location: Brooklet, GA Posts: 2,827 iTrader: 2 reviews	When you get your engine from MMR it will have a sheet with it that has the suggested break in procedure. __________________ Last time you voted to prove you aren't racist. This time prove you're not an IDIOT!!! My Garage--->http://www.moddedmustangs.com/forums...-member-46919/

January 5th, 2012, 08:38 AM	#3
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	Mike Do 20 WOT pulls then drink about 10 beers and repeat LOL just kidding!! Do exactly what MMR tells you so that your warranty stays in TACT. If I can remember dont go over 4000rpm, dont go into boost, change oil after 500,1500, then start normal oil change intervals. But to be certain use thier sheet like Kick said. your Going to relaly like your engine they are tough. __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

January 5th, 2012, 11:31 AM	#4
CobraStang161 Hardcore Enthusiast 4V twin turbo 2000 GT I live my life a quarter mile at a time xD Join Date: Jan 2007 Location: Staten Island, NY Posts: 1,739 iTrader: 0 reviews	personally i have found the best way to break in a motor is beat the ever loving piss out of it. Have done that with all my motors i built and they are all running strong to this day __________________ 2000 Mustang GT Built 4V Motor with Sullivan Single Plane Intake Custom 66MM BB TT kit Borla XR-1 Dumped before rear Moser built 9" Rear 35 spline WaveTrac Diff with 3.75s 35 spline Moser axles 14PT roll cage and minitubbed

January 5th, 2012, 01:36 PM	#6
T-Lee. 30 I Post Entirely Way Too Much 03 gt, 96 tbird, 05bv gxp Faster than trolls! Join Date: Oct 2010 Location: United States! Posts: 5,274 iTrader: 0 reviews	[QUOTE=dhicks7806;4184912 Normal operating conditions. Also one of the most important parts is engine breaking (downshifting to slow down). [/QUOTE] So is it good or bad to do engine breaking while breaking in an engine? __________________ 03 V1 S trim @5psi 339/359 3:73's Iraq and Afghanistan War Vet 4 deployments from 01-08.My Wife is also a War Vet

January 5th, 2012, 01:36 PM	#7
saxmanJJ Hardcore Enthusiast 2004 Mustang GT 11.463@121.50 Join Date: Jun 2007 Location: SE PA Posts: 1,644 iTrader: 1 reviews	The shop that put in my new shortblock has a procedure to break in a new shortblock/engine on their dyno. I think he said it takes about a half an hour to complete. After he did the break in procedure, he had it on the dyno for about 4 hours, with plenty of WOT runs, to dial in the tune. He said I could immediately take the car to the track when I left his place. __________________ MM Bracket Racing Crew Member #5

January 5th, 2012, 02:00 PM	#11
dhicks7806 Regular 2003 Mustang GT Join Date: Dec 2011 Location: Palmerton PA Posts: 252 iTrader: 0 reviews	Hey saxman how's your motor holding up after that break in? Run like a raped ape? Have any blow by issues? The only thing I ever to "baby" my motors was keeping boost relatively low for about a 1,000 miles but even that may not be necessary after the rings are seated fully... Sent from my Autoguide iPhone app __________________ '03 GT w/BBK CAI, MAC Pro chamber, Borla Stingers, MGW Orange, SCT X3, and some make it sexy mods '89 GT 5.0 w/full bolt ons-SOLD '04 STi w/ A'pexi N1 catback and accessport-SOLD '00 Audi A6 2.7t stock - DD/Wifey's whip

January 5th, 2012, 02:05 PM	#12
Mike Hadz Regular 2000 Gt Join Date: Dec 2011 Location: San Diego Posts: 498 iTrader: 0 reviews	sounds more fun then i thought it would be so far __________________ 2000 Gt - full bolt on's 3.73's eibach suspension. 265hp/307tq

January 5th, 2012, 02:05 PM	#13
03_StangGuy I Poop Entirely Way Too Much Blown 03 GT Join Date: Jun 2007 Location: Long Island NY Posts: 6,917 iTrader: 0 reviews	You'll get a million different answers from a million different people. Bottom line is do whats necessary for the warranty and know that the engine needs pressure to seal the rings. Driving too light will hurt power and efficiency. __________________

January 5th, 2012, 07:48 PM	#16
mustanginky MM Fanatic 2000 gt Join Date: Feb 2009 Location: La grange, KY Posts: 4,259 iTrader: 2 reviews	how the hell would mmr know what rpm range you took it up to? they have no way to prove or disprove that without some sort of electronic device on your car. from all my research, you want to introduce lots of engine breaking and lots of varying rpm/loads to give the rings a chance to seat. don't beat the heck out of it IMO but take it up to high rpm's with moderate load, and get on it alot at low rpm's. put fresh dino oil in it off the bat, change it after your initial drive (maybe 5-7 miles of varying rpm and stop and go), drive about 150 more, change the oil, drive 1000 and change it. i'm about to change mine here shortly and i've got around 700 miles on it. __________________ Procharged 2000 5 Speed BAB GT, built motor, blower cams, speedy dyno tune 412 hp, 450 rw tq HARDCORE CREW BRIGHT ATLANTIC BLUE CREW #1 MEMBER

January 5th, 2012, 08:08 PM	#17
CobraStang161 Hardcore Enthusiast 4V twin turbo 2000 GT I live my life a quarter mile at a time xD Join Date: Jan 2007 Location: Staten Island, NY Posts: 1,739 iTrader: 0 reviews	I built my motor for my car and took it straight to the dyno. Made 847rwhp on a brand new engine. I find it stupid that a company makes you baby an engine when it's built to have the shit beat out of it. A company should feel confident in their products. __________________ 2000 Mustang GT Built 4V Motor with Sullivan Single Plane Intake Custom 66MM BB TT kit Borla XR-1 Dumped before rear Moser built 9" Rear 35 spline WaveTrac Diff with 3.75s 35 spline Moser axles 14PT roll cage and minitubbed

January 5th, 2012, 08:21 PM	#19
Nitmare67 Hardcore Enthusiast Join Date: Feb 2010 Posts: 1,391 iTrader: 0 reviews	I run a base tune for about 50 miles then break them in under boost on the dyno. Rings seat great under boost __________________ 99 Mustang GT 446rwhp, Vortech Aftercooled, Killer Chiller @12lbs, HPX, 3.73s, MGW, Battery Relocation, Intercooler Tank Relocated, CF DF clutch, Steeda Quick Release Quadrant, 75mm TB, Ported C&L Plenum, Stock PI Cams Advance 4 degrees, Pro Chamber

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