Does it need run in??

[Jim_rx7]

This is the story...

My engine was rebuilt 3K ago... but then died due to sudden water seal failure.


I rebuilt it using only the following new parts :

full seal kit from rotaryart
new pilot bearing and seal
new corner seal springs
new side seal springs

Plates and housings were all within tolerance. Side seals and corner seals were ok. Rotors fine, stationary gears find etc. Oil control rings fine.

Apex seals also fine and within tolerances etc.


So my question is... should I run it in? Seeing as the apex seals were being re-used from the initial rebuild.

What\'s your thoughts?

[SmbFD3S]

was everything replaced in their original position and the same way round? i.e. apex seal, side seals etc
 
I would have thought no to be honest unless the positions changed although i would give it a couple of hundred miles for the plates and water seals to settle in.
 
Just my thoughts

[L18M]

interesting question.. think better safe than sorry. no harm in running it in
gotta be better for the engine than boosting it everywhere straight off.

[Brett]

Anything involving new bearings should be run in carefully.

[SmbFD3S]

Anything involving new bearings should be run in carefully.

Yes, but it\'s only the pilot bearing thats been replaced....
 
I personally would just take it easy for a couple of hundred or so miles and let everything settle down as mentioned before.

[davehg]

id run it in for sure, especially if you replaced bearings etc. everything has been disturded. Just my opinion :WaveBye

[cjr]

does any one know what the pilot bearing does?
seems not it is for the input shaft on the gearbox. it is not a main engine bearing so therefore does not require bedding in. if it starts fine the drive it how you feel happy, no bearings or tips have been replaced so why run it in