Take it easy or Turn up the Boost?

[TurboDSMer]

Okay so i jsut rebuilt my motor and have been driving on it very easy for the past couple of weeks. I have hit now 300 miles on the new motor and have only reved it up to 4k. I have been able to hit at some points 25psi but the motor seees around 10-18 on average shifts. Do you guys think it would be okay to now tune the car to run my daily boost of 20psi to redline now or should i wait a little while longer before i do that. I am running a 20g and have all the supporting mods for it.

 

[GSTinCO]

Engine breakin is a very touchy subject at best. You can read all kinds of different "theroies", but what it all comes down to is are you comfortable with it. I say turn the boost up if you want a high horsepower motor and if your looking more for, I don't want to rebuild again keep it low for now .

 

[95blackGsTurbo]

Keep it around your 20psi and do short little bursts up to 4k then 4.5k then 5k and so on. That is the best way for a forced induction motor. I did mine like that right out of the hole. About 3 minute's of idle time and started buidling boost right away. The rings can't get seated unless your on the gas. It's combustion that seats them 75% of the way. The other 25% is done but the cyllinder walls.

 

[perley03]

This guy really knows his stuff about motors. It might not help you know since you surpassed the time to seat your rings, but its worth checking out.
http://www.mototuneusa.com/break_in_secrets.htm
Read On!!!!!!!!!

 

[GVR4592]

When I build an engine, I run it until it warms up, then I change the oil(no synthetic) and let it cool off. I re-torque the head studs, and go for a drive. Once it's warmed up, I do a couple 1/2 throttle pulls, making sure to compression brake to help seat the rings. Then I do full throttle pulls, compression braking again to help seat the rings. I do that for about 15 minutes, then I go home and change the oil again. After that it's ready to rock. 300 miles is plenty for break in, another 50 or a 100 isn't going to make much if any difference. It's either going to be fine or it's not.

 

[TSIfreek]

When I build an engine, I run it until it warms up, then I change the oil(no synthetic) and let it cool off. I re-torque the head studs, and go for a drive. Once it's warmed up, I do a couple 1/2 throttle pulls, making sure to compression brake to help seat the rings. Then I do full throttle pulls, compression braking again to help seat the rings. I do that for about 15 minutes, then I go home and change the oil again. After that it's ready to rock. 300 miles is plenty for break in, another 50 or a 100 isn't going to make much if any difference. It's either going to be fine or it's not.

I agree with the above post to the T. The motor is eather built right or not. Taking it easy on any motor just doesnt seat the rings as well and wont make it last longer. When my motor was ready to rock I used 12 psi and WOT pulls (in third) up to 5-6K and engine breaking.

 

[95blackGsTurbo]

When I build an engine, I run it until it warms up, then I change the oil(no synthetic) and let it cool off. I re-torque the head studs, and go for a drive. Once it's warmed up, I do a couple 1/2 throttle pulls, making sure to compression brake to help seat the rings. Then I do full throttle pulls, compression braking again to help seat the rings. I do that for about 15 minutes, then I go home and change the oil again. After that it's ready to rock. 300 miles is plenty for break in, another 50 or a 100 isn't going to make much if any difference. It's either going to be fine or it's not.

VERY good post. Most people wait to long to start getting on there motor. You want to get the rings to seat as quick as possible and the only way to do that is to do full throttle pulls. Be sure to compression brake the motor as well. Don't just step on the clutch and let go down to idle.