Deburring all sharp and rough edges on inside engine case?

[danny gabbard]

Good idea or waste of time ?

[Frenchy Dehoux]

      When I build motors I always look for sharp edges and round them off and polish other areas to keep the oil to flow back. Also check the lifter bores to make sure they do not have too much play side to side. And many other area prior to assembly

     Frenchy

[Dominick Luppino]

Great idea! Gee how long have you been playing with VWs

[Harry/FDK]

Doing it for the last 2 weeks. Rough edges, casting flash etc. On the flywheelside i found that the bottom 3/8 plug almost fell out due to  Had to tap to M18 x 1.5 before i actally had solid meat to hold the bolt... (This is a new mag case).

[Zach Gomulka]

Did that to my case last week. Check this thread for more:
http://cal-look.no/lounge/index.php/topic,8007.0.html

[danny gabbard]

Great idea! Gee how long have you been playing with VWs

I am just a old body man Dominick ! Still trying to learn. Hell you have probably forgot more about vw motors than I know.

[danny gabbard]

Did that to my case last week. Check this thread for more:
http://cal-look.no/lounge/index.php/topic,8007.0.html

Thanks zack! I forgot that post and thanks to ALL that posted the pictures and great info.

[Fasterbrit]

Deburring a case to remove sharp machined edges is a must. Sharp edges are stress risers that promote cracking. I have just pulled appart a low mileage mag case that has been bored and stroked without any attention to sharp edges and the bearing saddle at no 1 main has two hairline cracks about half an inch long each. Not good!