2nd hand cams - running them in

[matth76 0]

Just had some 2nd hand 268 Eurospec cams fitted. They had done about 1-2k miles by someone I know. I also had new tappets/followers fitted.

 

The garage that fitted them did a brilliant job and also told me because they were second hand they wouldn't need running in... only brand new cams need running in. Just out of curiousity why is this (i forgot to ask the garage)? And what is the process of running cams in... how are 2nd hand ones different to brand new ones?

 

Thanks for any info.

[Supercharged 2]

Don't think any cams really need running in - you just have to let them settle onto the tappets before starting up...

[matth76 0]

Cheers.

[Seb 0]

Some cams do need running in - but it's more to do with work hardening the metal in the correct fashion, rather than letting them wear to the followers. Yours should be good to go :)

[flusted 0]

normally approx 20mins at 2k to run new cams in

[steveo29 0]

you run em at 2k for 20 mins cus oil flow at idle isnt as good....dunno on the used ones

[Neil VR6 0]

Used ones; bung 'em in. Drive gently for a bit if it puts your mind at ease but you'll be fine!

[corradophil 3]

Some cams do need running in - but it's more to do with work hardening the metal in the correct fashion, rather than letting them wear to the followers. Yours should be good to go

 

Yes, that is my understanding too. You are supposed to run in brand new cams. A few years ago a mate got a hammer through his garage door from an enraged neighbour beacuse he was running in a new cam in his 8V Golf running twin 45 webbers.