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engine oil or assembly lube
engine oil
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assembly lube
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break in
#1
Just wondering what everyone else does. I have different articles on engine build. Some of the article have said engine oil is ok for the enitial breakin on the amin and rod bearings. Others have said to use assembly lube on the mains and rods. What are your thoughts? I normally use a engine oil for the mains.
Jim

drive it like you stole it
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#2
I use assembly lube on the bearings. Years ago, we just used 1/2 STP oil treatment, 1/2 10w-40. I think that if the motor doesn't sit around to long before you start it and prime the system then just oil would be fine.

[Image: faood3.png]
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#3
I still use the STP method on the rods & mains then prime the system untill oil flows to the rocker arms.

[Image: 386_07_10_13_5_58_42.jpeg]
My Mustangs:
71 M-code Mach 1, Medium Blue/White Sport, 4R70W, 3L50, Factory Ram Air.
72 Q-code Mach 1, Pewter/Black Sport, 4-spd, 3L25.
73 F-code Convertible, Planned: color TBD/Black top/White Int., 351C, 5-spd, 3L50.
65 Convertible, Britney Blue/White/White, more modified than original.
05 Convertible, Legend Lime/Tan/Tan, future classic??
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#4
Use assembly lube if the engine will sit for longer than a few short hours before starting it up.

But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy. James 3:17 (KJV)

[Image: 2member12162.png]
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#5
Assembly lube on bearings, Cam break in lube on cam and lifters, oil on valve train components, prime oiling system before starting, use a high quality break in oil such as Joe Gibbs racing with a high ZDDP content. Follow cam manufacturer's cam break in procedure. Continue to use an oil with a high ZDDP content after break in to prevent cam lobe failure.

Chuck
  Reply
#6
c9zx;26473 Wrote:Assembly lube on bearings, Cam break in lube on cam and lifters, oil on valve train components, prime oiling system before starting, use a high quality break in oil such as Joe Gibbs racing with a high ZDDP content. Follow cam manufacturer's cam break in procedure. Continue to use an oil with a high ZDDP content after break in to prevent cam lobe failure.

Chuck


X2 We use Brad Penn break-in oil.

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]
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#7
yes use high zinc break in oil then after like 500 miles change to what ever fluid u wanna use im usin amsoil, but i did use a hydro roller cam and set up


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#8
If the engine is going to be sitting for a while before you fire it up use assembly lube. if its going to be fired up with in a couple of hours then some 10w40 should be fine.
  Reply
#9
yup....use the lube...reason why so many cams fail..lack of zinc in break in...and a lack of nickel...think that is what happend to mine...motor was fine inside...cam was all wacked out...lack of break in lube in the early 90s when some one rebuilt her...im defenatly going to use every lube they recomend from now on.. i only had about 20 or 30,000 miles on the rebuilt motor and the cam was toast.....plus sythetic was made for jetfighters originaly...works good in alot of new cars with over head cams..and works good in high tolerance high compression motors...very bad for high mileage rigs...and bad for break ins on are flat tap cams...now i hear roller cams dont have as much issues...but flat tappet cams need the old additives in the original oil for break in.

plus..do you really want to take the chance ? break in lube is only 8 bucks or so...could save you hundreds or more.
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