New Cam Break In??

[nos707]

When you first start the motor after new camshaft install, is there a break in process? Like dont let the motor idle for 20 mins at first start up?

Also stay below 4,000rpm for the first 500 miles??

 

[Roland69]

My uncle is a race engine builder and he starts it up for the first time and holds it around 2000 rpm's for about 30 minutes.....I always wondered about that but it seems to work out well for him and his motors seem to be hard to beat at the local oval track. I would think it's a bit different for a roller cam.

 

[srothfuss]

Roller cams don't need a specific break in proceedure. If it's a flat tappet, than running it for 20 minutes around 1,500 RPM's is recommended. There are a few threads on engine break in and I remember one of them being cam specific.

 

[dragnazz5.0]

yeah, roller cams dont need a break in. i would just idle the motor up and make sure oil pressure is good and there are no leaks. give it a few revves every now and than. the main thing is to get all the bearings to seat and get the rings seated.

 

[grn92conv]

Roller cams don't need a specific break in proceedure. If it's a flat tappet, than running it for 20 minutes around 1,500 RPM's is recommended. There are a few threads on engine break in and I remember one of them being cam specific.

What he said "roller tappet cams don't require break-in"
There's nothing more aggrevating than starting up a freshly built engine with a wild flat tappet cam, then flattening out a lobe on break-in.





.