Heat cycles for new cams???

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Mar 5, 2018 | 10:46 PM

Daddy454

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Road Master

Joined: Nov 2014

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From: Nevada

Heat cycles for new cams???

Not sure about this one.Just finished installing new cams,lifters,pushrods...my buddy at work ws asking if I had ran it through some heat cycles.Is this necessary?I realize with new cyls./pistons it makes sense,but I wouldn't think it is needed with cams?Any input?Gonna be nice enough Thursday to get her out.I ran it on the lift a few times,is that enough?

Mar 6, 2018 | 12:01 AM

23Seven

Outstanding HDF Member

Joined: May 2012

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From: Brentwood

I ran mine 3 times before I started getting into after cam swap. So far so good!

Mar 6, 2018 | 01:14 AM

Daddy454

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Joined: Nov 2014

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From: Nevada

Quote:

Originally Posted by 23Seven

I ran mine 3 times before I started getting into after cam swap. So far so good!

Like started ran...or ran ran?

Mar 6, 2018 | 06:12 AM

grbrown

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From: Bedford UK

I can't see any need for heat cycles for that sort of work. It is much more important for a new build with a high state of tune. If the rest of your engine has a decent mileage on it, just ride!

Mar 6, 2018 | 06:34 AM

FPV

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Joined: Jan 2018

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From: Seattle

Agree with grbrown, no need for heat cycles for new cams/lifters. Proper tune is most important.

Mar 6, 2018 | 06:45 AM

Cliff R

Cruiser

Joined: Oct 2010

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From: Ohio

No "break-in" of any kind is required with roller cam/lifters....so no worries.

Pistons rings seat very quickly with the correct finish on the bores so really no "special" run-in procedures there either. Things to avoid there would be "washing" them with too much fuel, overheating, or really heavy load and high rpms for the first few miles.......Cliff

Mar 6, 2018 | 10:08 AM

ratpick

Road Captain

Joined: Jun 2012

Posts: 574

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From: Big Sky Country

Plus 1 on last three posts--I'd maybe take it easy for a bit but understood break in to be about seating rings, and even that seems to have gone by the wayside of late. We used to never run synthetic oil during break in because of concerns rings wouldn't seat/wear in properly, and not no one seems to be worried about any of that.