Re: new camshaft installation question
[Re: mickm]
#2048605
04/07/16 04:42 AM
04/07/16 04:42 AM
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Joined: Jun 2006
Posts: 5,163 CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,163
CT
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Its important, but don't drive yourself insane. Its not automatic failure. What I do is lube the lifters and cam, assemble, set everything up, and put the intake on last. Before it goes on I dump more on the cam/lifters. That stuff comp sells now is weird, amazing it works I call it BBQ sauce. Its runny/low viscocity which doesnt help.
Anyway, prefil your carb bowls, ballpark your timing. When you assemble make sure the liftters spin free in their bores, and once assembled make sure they spin as you turn the engine over (they spin slowly). The goal is to hit the key, get it running, and up over 2k rpm. Ut I've had friends do goofy stuff and not wipe lobes. One turned his engine over probably 200 times with the starter trying to build oil pressure, one let it idle at like 600 rpm for what seemed like an eternity, was probably only about a minute. Then he wanted to stop after 20 minutes instead of 30... Their stuff has been fine. My last one I started up, got the revs up, had to shut down, restarted, revs up, had to shut down AGAIN, this is the first 2 minutes on a fresh engine. But just kill it, restart, revs back up right away, no problems. Use the break in oil and don't do anything dumb and you'll be ok!
Last edited by GTX MATT; 04/07/16 04:43 AM.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: new camshaft installation question
[Re: GTX MATT]
#2048676
04/07/16 10:12 AM
04/07/16 10:12 AM
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Joined: Jan 2003
Posts: 13,367 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,367
Marion, South Carolina [><]
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Put the intake on last, after the valves are adjusted and hopefully the motor doesn't need to be turned anymore. Add more lube to the lobes, then install the intake. I don't think it's THAT critical, but I figure every bit of precaution is worth the effort. Of course I try not to use a flat tappet cam in anything anymore.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: new camshaft installation question
[Re: mickm]
#2048749
04/07/16 11:48 AM
04/07/16 11:48 AM
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Joined: Feb 2008
Posts: 714 Central TEXAS!!!!
sr4440
super stock
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super stock
Joined: Feb 2008
Posts: 714
Central TEXAS!!!!
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why don't you use a drill to prime the engine instead of the starter?
Joe
Without Data, you’re just another guy with an opinion.
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Re: new camshaft installation question
[Re: mickm]
#2048769
04/07/16 12:16 PM
04/07/16 12:16 PM
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Joined: Dec 2007
Posts: 77 British Columbia Canada
Challenger340
member
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member
Joined: Dec 2007
Posts: 77
British Columbia Canada
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It is one of those "in a perfect world" scenario's ? Invariably, yes... the lube wipes off with just residual left behind, which is hopefully enough until it gets running and splash lube, etc., can take over. just me, but IMO, V/Spring pressure is what kills Flat tappet Cam run-ins more than the EP additives. And keeping it well below 300#,(260-280# if you can) over the nose for run-in goes a long way to insuring a patent lobe establishment.... then AFTER break-in.... re-install inners ? whatever ? back to running V/Spring pressure. If no inners to remove.... low ratio rockers for run-in ? +.060" retainers and leave the Spring shims out ? ANYTHING to get it DOWN !
Better to be a "has been" than a "never was".
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Re: new camshaft installation question
[Re: mickm]
#2048853
04/07/16 02:39 PM
04/07/16 02:39 PM
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Joined: Aug 2003
Posts: 43,206 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,206
Bend,OR USA
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Which type of cam lube are you using? The greasy moly black paste or the liquid red stuff? Bottom line is make sure and add a can of ZDDP zinc additive and make the motor start up quickly, no grinding on the starter for 2 or more mintues and rev the motor up right away above 1500 RPM
Last edited by Cab_Burge; 04/07/16 08:21 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: new camshaft installation question
[Re: mickm]
#2051409
04/10/16 10:53 PM
04/10/16 10:53 PM
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Joined: Mar 2003
Posts: 1,450 Martinsville, IN
cdwmotorsports
pro stock
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pro stock
Joined: Mar 2003
Posts: 1,450
Martinsville, IN
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The cam I am installing this week will be my last flat tappet. The 512 I build next will be roller off the top.
eBay-cdwmotorsports
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Re: new camshaft installation question
[Re: cdwmotorsports]
#2052352
04/11/16 11:50 PM
04/11/16 11:50 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I adj the valves then remove the rocker arm assys & lube the cam then reinstall em as they will not change adj just from a R&R. preoil with the drill with #8 piston at TDC (BB I'm assuming) then hand turn the dampener CW 3/4 of a turn till dampener marks line up at TDC & preoil #6. backup the dampener slightly to ~15 BTDC & line up dist magnet with the tooth that places the rotor under the #6 cap terminal. Do all of the std caveats; bowls filled/batt charged/inner spring out/thermostat out/fan in front of rad/several helpers, one on top to man the light to power time the dist when it fires (to 40 or so deg). one to spot leaks. you in dr seat to watch gauges/shout orders/gun the eng. any issue dont think about it just shut it down IMMEDIATELY then fix the issue then restart. read "breakin secrets" at www.mototuneusa.com As said good breakin oil. You have ONE shot to get an excellent cam and ring seal on breakin day that will produce good power for years as opposed to one that has an earlier demise (& less power) & all the time you thinking you did a good job. You have thousands of dollars invested plus your time. EDIT on mockup do the Hughes "thunk" test with the lifters (they must be free to rotate)
Last edited by RapidRobert; 04/11/16 11:51 PM.
live every 24 hour block of time like it's your last day on earth
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