how does kc break in motor before dyno?

[dlowman]

Just wonder what your thoughts are on this Keith. What do you guys do the motors before doing the dyno pulls? I assume you do some sort of break in? And how do you recommend the break in once the motor is in the car? Drive it like you stole it approach to set the rings or the slow 1000 mile break in method.

Dan

[Excaliber]

1000 miles? Whew, I aint got time for that!

[dlowman]

lol yeah I dont think I have ever broken in a motor easily I don't have that much will power lol

[Keithc8]

We get everything set where the engine will start right up and then put a timing light on the engine, check the oil pressure as soon as it starts and monetor the water pressure. We will run for about 15 minutes at about 2000 to 3000 rpms. We will then kill the engine and check the valves, go over all of the bolts and look for leaks. If everything checks out ok we will run the engine for another 30 minutes with a load on the engine running it from about 1500 rpms all the way up to 4000 rpms changing the laod and the rpms.
We will then makes pulls on the engine to check the power and make sure that it is making the power it should. Will make about 10 to 15 pulls tuning the engine. The engine is pretty much broke in after this but I recommend that after it is in the car for the customer to check things over after installed. Need to recheck the timing and oil pressure while also making sure that the cooling system is working right. How you run it ater it is in the car depend on your comfort level with the work of the installer. Hope this helps a little. Thanks, Keith Craft

[DavidNJ]

Originally Posted by Keithc8

We get everything set where the engine will start right up and then put a timing light on the engine, check the oil pressure as soon as it starts and monetor the water pressure. We will run for about 15 minutes at about 2000 to 3000 rpms. We will then kill the engine and check the valves, go over all of the bolts and look for leaks. If everything checks out ok we will run the engine for another 30 minutes with a load on the engine running it from about 1500 rpms all the way up to 4000 rpms changing the laod and the rpms.
We will then makes pulls on the engine to check the power and make sure that it is making the power it should. Will make about 10 to 15 pulls tuning the engine. The engine is pretty much broke in after this but I recommend that after it is in the car for the customer to check things over after installed. Need to recheck the timing and oil pressure while also making sure that the cooling system is working right. How you run it ater it is in the car depend on your comfort level with the work of the installer. Hope this helps a little. Thanks, Keith Craft

Three questions:

1. Do you just check the external bolts? Do you retorque the heads and intake? Do you pull the pan?

2. When breaking in a cam, do remove the inner spring for that first 20 minutes?

3. Do you use a special high ZPP oil during the break in? When do you change to synthetic? Do change to synthetic before the dyno pulls?

Thanks,

David