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Swepco · 06-30-2008, 08:42 AM

Here's more information on Flat Tappett Cam Engines for you.....
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MORE INFO REGARDING THE FLAT-TAPPET CAM PROBLEMS WITH LOW ZDDP (zinc) LEVELS IN NEWER OILS
An article in a recent engine building magazine offers their “rules” regarding the break-in of Flat Tappet Cam engines. More information has come up since the article was written, so we have combined the old and the new to give you a heads-up on what you should do.
First and foremost, DO NOT USE oils which are labeled with the API ratings of either/both SM, for gasoline engines or CJ-4 for diesel engines. They do not contain adequate protection for flat–tappet cam engines as they are much lower in phosphorous and zinc.
Don’t use a synthetic oil for break-in.
Always apply a pre-lube to the cam lobes and lifter faces.
Do not pump-up hydraulic lifters before use.
Prime the engine’s oil system before start-up.
Lubricate lifter walls and pushrods with engine oil.
Fire the engine, bringing it to a fast idle of between 1,500 and 3,000 rpm. Vary this speed during running, in a slow-to-moderate acceleration/deceleration cycle. Continue this varying-speed cycle for 20-30 minutes.
Continue to use the proper oil or oil additive each time the oil is changed for best results.

Remember…”SWEPCO to keep it running!”

Dick Floryanowich

06-30-2008, 08:42 AM	#3 (permalink)
Swepco Oil Moderator Join Date: Apr 2007 Member Number: 207 Posts: 62	Re: Official Oil Recomendations Here's more information on Flat Tappett Cam Engines for you..... __________________________________________________ ___ MORE INFO REGARDING THE FLAT-TAPPET CAM PROBLEMS WITH LOW ZDDP (zinc) LEVELS IN NEWER OILS An article in a recent engine building magazine offers their “rules” regarding the break-in of Flat Tappet Cam engines. More information has come up since the article was written, so we have combined the old and the new to give you a heads-up on what you should do. First and foremost, DO NOT USE oils which are labeled with the API ratings of either/both SM, for gasoline engines or CJ-4 for diesel engines. They do not contain adequate protection for flat–tappet cam engines as they are much lower in phosphorous and zinc. Don’t use a synthetic oil for break-in. Always apply a pre-lube to the cam lobes and lifter faces. Do not pump-up hydraulic lifters before use. Prime the engine’s oil system before start-up. Lubricate lifter walls and pushrods with engine oil. Fire the engine, bringing it to a fast idle of between 1,500 and 3,000 rpm. Vary this speed during running, in a slow-to-moderate acceleration/deceleration cycle. Continue this varying-speed cycle for 20-30 minutes. Continue to use the proper oil or oil additive each time the oil is changed for best results. Remember…”SWEPCO to keep it running!” Dick Floryanowich