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Old 06-22-2010, 10:27 AM   #1
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Default engine bearings

Is the rear bearing on a engine soppose to have any movement in and out? I think the bearings are shot but I was told they were replaced "only 1/2 gallon ago". LOL The front bearing leaks worse than the oil spill in the gulf so I think they both need to be replaced. What do you all think.
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Old 06-22-2010, 11:41 AM   #2
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The rear bearing should have some play forward to back. Push in the inner race lightly and turn it...if it feels rough replace it. On the front try removing the seal carefully from the OD and fill with grease to block leakage. If that does not help the seal may be worn out..or the engine is running rich increasing the leakage.
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Old 06-22-2010, 12:07 PM   #3
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Thumbs up Hello

I'm a newly impressed TKO ceramic bearing user. The rear bearing moves in and out a bit, but the front one should not.

I put a set of TKO ceramic bearings in my p5 and it absolutely screams. I can't believe the ceramic bearings made my engine faster. I'm a super impressed customer and I will be installing ceramics in all my engines. I will break them in with the stock bearings, then change them out after a gallon.

I left the two seals on the front bearing just because the track I mainly race on has some sand in it, and It never hurts to use protection, haha.

Seriously though if you doubt the bearings, put some TKO ceramics in it. You won't be dissapointed. My p5 revs faster and pulls harder throughout the midrange. Les rotating mass. They don't leak at all either. Don't be alarmed if they are tight at first, just run the engine slowly on the box for about a tank or 10 minutes to seat them in and free them up. They will be tight for the forst qualifier or two, then hold on tight I'm not joking....

Thank you TKO for an affordable sollution to increased performance.....
Mad Dog drives a Mugen MBX-7, Novarossi engines, Clockwork Racing, Futaba radio, AKA/Proline Tires
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