I spent an open lapping day at High Plains Raceway breaking in my new motor. 

Glad to report it was uneventful.

With my old Hankooks aired up, don't want to was the RA-1s, I trailered the 901 out to HPR. I did not hook up the oil cooler as the ambient temps were low and incase something went kablamo I did not want to also replace that. 

But with a brand new radiator, the car barely got above the first temperature mark on the original water temperature gauge and struggled to break 170 on the new oil temperature gauge. Granted, I was hardly pushing the engine at race levels.

I did three 30-minute sessions. The first session kept it under 4,500 RPMS, just basically make sure the car ran and did not have a huge leak or something.

Second session did a few pulls in third up to about 5,000 RPMs on each lap. 

The third session, basically alternated fast laps with cooling laps, revving up to 6,000 RPMs.

I was expecting the biggest difference to be felt at the top end. So I was surprised when the biggest difference I felt was in the mid-range torque. I could fell the car pull out of those third and fourth gear turns much better.

But the proof will be in the racing on Memorial Day Weekend. In the meantime, I still need to cure some oversteer.