How much time?

[cjnecessary]

Like the title says how much time sould I give my new h/c/i to break in? Everything is new the heads were the only thing that was used but I had them totaly rebuilt. I just got the r/r to stop ticking. I was getting ready to adjust w the v/c off and all the sudden all the noise went away. I think through the whole h/c/i thats the onlt thing that has gone my way.

 

[91 HATCH]

100-200 miles

 

[cjnecessary]

Thank for the reply, any certain way I should do it. Looks like I might get to race wed. woohoo!!!

 

[91 HATCH]

stay below 5,000 rpm

 

[cjnecessary]

Just took it for the first drive, I'm so glad this journey is over it's running great.

 

[5spd GT]

Congrats!

Technically there is no 'break-in' per say, but I would like to give it a couple hundred miles, and an oil change or two to be on the safe side. Get the valvetrain and computer a bit of time to adjust and mate together

 

[smallstang393]

Drive it like you stole it
break them in how your going to drive it

 

[SVT32VDOHC]

I would say drive it a few hundred. I would change the oil after the first 500 miles.

 

[ninety15.0]

Yup change the oil often. I hope you used conventional oil for the break in. Change it at 500 miles.

Load the engine up....but keep the revs in check. I like to make long loaded runs. Put it in 3rd or 4th with the revs nice and low. Give it about 3/4 throttle and bring the revs up to 4500 or so....then lift off and let the motor decell. This should seat the rings nicely. You want a lot of cylinder pressure within the first few minutes of driving to get those rings to seat nicely.

Once the rings are seated and you know the valvetrain and computer are straight....give it hell. If its going to break, you might as well have it happen sooner than later. peace

 

[5spd GT]

Yup change the oil often. I hope you used conventional oil for the break in. Change it at 500 miles.

Load the engine up....but keep the revs in check. I like to make long loaded runs. Put it in 3rd or 4th with the revs nice and low. Give it about 3/4 throttle and bring the revs up to 4500 or so....then lift off and let the motor decell. This should seat the rings nicely. You want a lot of cylinder pressure within the first few minutes of driving to get those rings to seat nicely.

Once the rings are seated and you know the valvetrain and computer are straight....give it hell. If its going to break, you might as well have it happen sooner than later. peace

He didn't rebuild the bottomend

 

[ninety15.0]

Oh well dam....give it hell then

 

[cjnecessary]

Ok, I plan on giving it hell on wed. the new 150 shot is gonna be all the hell that my poor stock short block can take,lol. If I blow it up I got a fresh built 351w that will take it's place.