Break in

[StinkinLincoln]

what do i need to do to break in my new engine?
use reg. oil for first 1500 miles
break in cam first: 2000 to 2500 rpms for 15min?
then change oil after 50 miles and vary rpms and let engine slow car down and dont go over 3000rpms for the first 150 miles?
then change oil at 150miles
then at 300 then 1000
then every 3000 miles after that?

hoes does that sound?

 

[95strokerPSU]

The 2000 RPMs is only for solid flat tappet cams.

 

[Grn92LX]

Get it running, check for leaks and make sure everything is ok. Get it warmed up and in 2nd and 3rd gear get on it like 1/2-3/4 throttle take it to around 5k or so and let it decel in gear. Do this a few times varying the speed, gear and rpm. Come home, change the oil and cut open the filter. If its clean, youre fine. Congrats, you're broken in

 

[rwscott01]

edit

 

[juiced_94gt]

I would run 30wt non detergent regular oil for 500 miles, then 10w30 regular oil for 5,000 miles and then switch to sythetic (Thats what CHP told me to do for my 331 stroker so the rings break in properly)

 

[Grn92LX]

I would run 30wt non detergent regular oil for 500 miles, then 10w30 regular oil for 5,000 miles and then switch to sythetic (Thats what CHP told me to do for my 331 stroker so the rings break in properly)

I talked to mark O'neal, head guy at CHP, he told me 500 miles is fine to switch to synthetic. I def would not wait to 5k to start using better oil!

 

[juiced_94gt]

Interesting, maybe the tech guy is just giving me his personal view on things, well 500 miles seems like a better deal

 

[StinkinLincoln]

im thinking of using a blend. like 50/50 or something.

 

[5spd GT]

Keith Craft recommends 3000 miles (been building Ford engines for 30+ years) before switching to synthetic. Listen to your builder, not internet forum members if you are weary of information.

Synthetic is a better oil for low mileage cars.

 

[Methodical]

I went about 1500 miles before switching to synthetics on my fresh engine. So far so good.