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Author Topic:   metal shavings on drain plug?
Dirt Maniac

Total posts: 120
posted May 05, 2005 06:14 PM  
First oil change of the season after 2 races on a brand new motor. Motor has all new parts in it including dist. gear. We had a little bit of shavings on the magnetic drain plug - a clump about the size of a pencil eraser. Would you guys consider this acceptable/normal, or should I be worried.

I've seen this before, but I really want this motor to live so I guess I'm prone to worry about it a little. I cut the oil filter open also - didn't see anything alarming. Only a few very small flakes.


Dirt Forum Champ
Total posts: 5390
posted May 05, 2005 06:54 PM  
Break-in procedure was fairly typical - ran it for 25 or so minutes at 2000-2300 rpm as soon as it fired. Set valve lash and ran it to temp for 4 times or so over the course of the following week before putting the racing oil in. Break-in oil was 10W30 dino oil. Racing oil is Valvoline 851 racing oil. WIX filters from beginning.

Really just curious if a certain amount of shavings right at first is OK with a brand new motor.


Dirt Forum Champ
Total posts: 874
posted May 06, 2005 09:27 AM  
It should be fine, just wipe the magnet good... put good oil and a good filter on it. You might change the oil again after another night just to be safe.

Dirt Forum Champ
Total posts: 635
posted May 06, 2005 10:09 PM  
I've seen the same thing with mine. When I tear them down later on, the only thing that has any wear on it is the dist. gear and a bit on the cam gear.

I just did the same thing on this years motor as you did (cut filter open, a bit of flakes etc). It had the same breakin, heat cycled, changed again after 1st practice session (8 laps) ran 3 more practice sessions then 1 full night of racing. I put Amsoil 20w50 in it this week, so it should be good for a couple months. ** crosses fingers **

graham jackson
Dirt Full Roller

Total posts: 42
posted May 07, 2005 02:54 PM  
The trick here is to keep a GOOD eye on the oil psi, after the shavings. If the oil psi is the same as it was after changing the oil chances are you are ok. If the oil psi has dropped some them got something into the bearings, most likely. If the psi does not get worse then what ever it was got chewed up and is not a concern anymore.
Again keep an eye on the oil psi, if it has not dropped you are ok.

[This message has been edited by graham jackson (edited May 07, 2005).]

Dirt Maniac

Total posts: 137
posted May 07, 2005 05:42 PM  
ive cleaned piles of metal out of new claimer pans.

you guys should get a moroso pre filter screen, so you can drop the filter and look anytime.

Mr. Badboy
Dirt Full Roller

Total posts: 29
posted May 08, 2005 09:27 AM  
We just fired up a new motor(cam, pistons, bearings, rings, etc.) We ran it above 2000 rpm for 45 minutes, heat cycled it, and ran it again. Took it to the chassis dyno, and put another hour of run time there. After this procedure,we cut the oil filter apart. There were some small metal shavings in the filter. I consider this normal. We cut every filter apart at oil change to monitor how much trash builds up to spot trendlines.

Dirt Roller

Total posts: 21
posted May 20, 2005 09:35 PM  
Here is a great Idea for everyone. Go get yourself the largest refrigerator magnets you can find and wrap them around your oil filter. I hold all of the metal flakes at the outside of the filter, keeping it from circlating through the motor. Try it, and then cut your filter open and see for yourself. Learned this from a Nascar Tech.

Dirt Full Roller

Total posts: 31
posted June 03, 2005 11:56 AM  

Dirt Maniac

Total posts: 143
posted June 03, 2005 09:49 PM  
The wear from solid lifters also has to go somewhere too, doesn't it?

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