Engine break in query

Hi, I have been watching your videos on engine break in and just want to check when I can put a fully synthetic oil into it and if my break in period is sufficient.

Engine is a 3SGTE with wiseco pistons, pec rods, acl bearing, 272 and 268 cams with a EFR7163 (on the previous block I was getting 456BHP and 360lbft of torque at 23 psi, redline was 8K), car is used for track days (old engine block lasted 8000 track miles before the rings failed on one of the cylinders)

Up to now I have done the following.

1, Initial start and ran it between 2-3k for 20 minutes.

2, First run out – light load (up to a few psi boost) and vac runs up to 4k for 1h20mins (40 miles)

3, Break in oil drained and replaced with more break in oil

4, Second run out – increasing load (6-8 psi and occasionally up to wastegate pressure of 14 psi) and vac runs for 1h (40 miles)

5, Third run out – same as above for 2 hours (65 miles)

I am booked on the dyno for tuning this Saturday and was hoping to have the fully synthetic oil in it (hoping to make a bit more power this time)

Hello, you have done more than I have ever done for a break in I literally build the engine run it in on the dyno until it stopped breathing most of the time this would be 2x 20 min heat cycles then change the oil and finish the dyno, i use this procedure for 90 percent of the engine builds i do.

Regards Ross

There is a good webinar on the subject where Andrei explains his rules on engine breaking in - check it out please.