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Technical Cam break in! Why all the problems?

Discussion in 'The Hokey Ass Message Board' started by Boneyard51, Dec 2, 2019.

  1. Deuces
    Joined: Nov 3, 2009
    Posts: 21,295

    Deuces
    Member
    from Michigan

    Is there any reason why flat tappet camshafts were never made out of forged steel????...
    I'm just a little curious....:confused:
     
    Blues4U likes this.
  2. Budget36
    Joined: Nov 29, 2014
    Posts: 7,248

    Budget36
    Member

    Does forged wear less? Think it would still have to be hardened anyway?
     
    LWEL9226 and Deuces like this.
  3. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,466

    Elcohaulic
    Member

    The factories brake the new engines in without starting them. They have this big machine that connects either to the flywheel or the crank bolt and it spins the crank, rods, pistons, bearings, oil pump, cam, lifters, pushrods, rockers and valves. There are no spark plugs but 8 hoses coming from each spark plug hole. I am told this is to monitor how much oil is making it to the rings, pistons and rods. This also monitors vacuum and compression.. I heard this machine has cameras on the spark plug sensors so the builder can actually see what's going on.. The new tech is amazing and can really get these old mills to crank...
     
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  4. Budget36
    Joined: Nov 29, 2014
    Posts: 7,248

    Budget36
    Member

    They do that for every engine? Or 1 in a 100 to check? I’m thinking with 1000’s of cars a day going out the door, it would require a lot of machines and headcount to pull that off.
    I’ve seen pics of Ford doing it, but I don’t think his volume was as much as what is occurring the past 60 or so years.
     
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  5. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 3,524

    2OLD2FAST
    Member
    from illinois

    Its all automated ..
     
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  6. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 2,106

    ekimneirbo
    Member
    from Brooks Ky

    I think the Covid virus is responsible:p.................
     
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  7. Deuces
    Joined: Nov 3, 2009
    Posts: 21,295

    Deuces
    Member
    from Michigan

  8. speedshifter
    Joined: Mar 3, 2008
    Posts: 280

    speedshifter
    Member

    I installed a solid lifter perf cam in a 324 Olds. The lifters (same as SBC lifters) had a small hole burned into the face up into pressurized cavity that feeds oil to the push rods. Have put 25000 on that cam. Never inspected that cam or lifters, but the valve lash remains virtually unchanged. Is it possible this actually helps? Seems like maybe a simple improvement, probably difficult or impossible on a hyd lifter. Greg
     
  9. Wanderlust
    Joined: Oct 27, 2019
    Posts: 357

    Wanderlust

    I’ve only ever used lubriplate lithium in my rebuilds, never had a problem. No it doesn’t break down in the oil, fire the engine, break in and change oil and filter, run 500k or 300 m another oil filter change. Recently rebuilt my 292 y block, now has 7000 miles on it, have checked rockers 3 times, good so far.
     
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  10. wicarnut
    Joined: Oct 29, 2009
    Posts: 7,971

    wicarnut
    ALLIANCE MEMBER

    In the 70's I worked part time/then full time before starting my Tool & Die/Pattern shop (I'm a carded tradesman, both trades) for SESCO racing engines, a very successful Midget race engine manufacture. On the subject of assembly lube oil, 90 weight gear oil was on bearings, cam, rollers, cam, etc, cylinders 30 wt oil, then 50 Wt Valvoline race oil, (no break in with racing engines, warm them up and go, later years I used 20/50 wt))very specific instructions on dry sump tank, oil lines and how to oil prime before firing engine went with each engine. I built/rebuilt many engines, race engines (side business) using the 90 wt gear oil as assembly lube, never a failure, ALL engines I built were oil primed before firing, later years, street type used the cam lube recommended from cam supplier on flat tappet cams, again, never a failure. The last engine I built was in late 90's, a 454 +030 mild street engine, comp cam flat tappet cam, still running today, never a problem. I purchased 3 crate engines in my later years, 2 reputable speed shop SBC 355's broke in on dyno, (both Brad Penn oil) 1 GM 350, all again primed before firing, used recommended Joe Gibbs break in oil GM crate. I'm talking 75/100 engines, never kept a log book, (should have)with no failures of any type from improper assembly lube starting around 1962, 14 years old, used STP for assemble lube till I worked for SESCO, my Dad's Midget race engines, my Midget/Sprint race engines, others race engines through late 90's, Many SBC with some BBC thrown in. I'm thinking majority of today's problems cam/lifter is in the quality of offshore shit we have available, A LOT of Crap IMO, lack of Zinc in oil and lack of experience in engine building plays big here on HAMB as well meaning members post bad info with the good info on engine building along with lack of good automotive machine shops left for quality work needed, close enough does not work with engines. All my BS here is my opinion from my life's experiences, remember $2 and my opinion/advice gets you a coffee at most places.
     
    Last edited: Sep 30, 2021
  11. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,466

    Elcohaulic
    Member

    Brad Penn oil kept foaming up on my Pontiac 462 and my 454.. The Chevy would develop rocker are ticking after climbing a 3 mile hill at 60-70 MPH. I would pull over on a level spot and let it idle. The ticking would slowly go away and I would be ok after that..

    The Pontiac did the same thing but the oil pressure gauge would do some weird things. It was a Auto Meter mechanical gauge. Besides it did the same thing with a different gauge..

    Once the same thing happend on the Chevy I bought after selling the Pontiac, I knew it was the oil. I changed both cars to Mobil 1 5W30 with a Wix filter. All these issues went away for good..
     
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  12. Deuces
    Joined: Nov 3, 2009
    Posts: 21,295

    Deuces
    Member
    from Michigan

    Mobil 1 also has their own brand of oil filters.... I have one on my car now....
     
    Elcohaulic likes this.

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