Wheel-reinvent. The whole point of breaking in a cam is to lap/mate the tappet to the lobe face/bores under pressure while the tappet, etc spins in the bore- before that- make sure the tappet spins free in the bore- if it dont, its flat cam time. Sending it out ensures you get to do it again in your motor, or not, your choice. I wont insall a used cam/lifter on my motor. Installed a ton of big flat tappet sticks and none have galled or gone flat using the race springs recomended. Rev-lube, clean oil, assble, fast idle, retorque/lash, inspect for leaks, change the oil and slap the easy button. The ad makes it sound like the tool couldnt change a light bulb. Light springs are for mock-up and checking VTP IMHO, not big flat-tappets @ any RPM. Call me old fashioned and Im sure there's exceptions and I didnt get the memo but If the card says use other than the race springs for break-in I'm switching makers cuz it aint broke-in to me.
It claims to increase pressure during the process. I would feel better doing it in the engine that the cam/lifters were to be installed in. How would one know the geometry of the lifter position in the "tool" verses a production block(which could be off a bit) or a blueprinted block?
Bingo- valve-train weapons are one shot mated-for-life deals in my book. Install them once in that motor in that spot or toss them. Never mix-n-match, too risky. Least that can happen is it shell''s out & metal frags go all over. Drop a valve @ 7krpm and you'll be lucky to keep it in yer lane.
I had asked some questions about breaking in a cam a few weeks ago and someone posted a link to that. I think the general consensus was that's it's always better to break in the cam in the engine so the lifters can wear properly. I think the company send you numbered lifters to use, but it would make me nervous.
It would be difficult to deal with someone out of town/state if there were a cam failure. Wonder what their warranty is stated to cover? My luck the new kid hired would do mine, and in between texts with his girlfriend, would manage to get the lifters miss numbered.
Carl Wegner built a similar machine and broke in all his nascar cams before installing them. Worked pretty damn good... used air pressure.. or air over hyd I forget... to load the lifters so you could vary the load. He said it dramatically cut cam come backs in his race engines. I had him break cams in for me when we built flat tappet rule engines. When your not allowed to run roller cams you get cams with very aggressive lobes and lots of spring pressure so the failure rate was pretty high and this solved that issue for me. So in my expeirence it does work as claimed. Plus when you have a lobe go flat on a new race motor you pull it all apart, strip the block run it though the cleaner reassemble, new gaskets and usually with new bearings.... this is costly, cheap insurance to have it pre broken in properly.
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