Full flowing an ACVW case

[Devastator]

Here's a link to a thread where posted information regarding drilling and tapping for tapered, (NPT), threads.:
http://www.shoptalkforums.com/viewtopic ... hilit=+tap

[Ol'fogasaurus]

Thank you sir. I duplicated something that existed already but it is getting some attention again so that should be good (I hope).

Lee

[neil68]

I have ALWAYS pulled and replaced the #4 restrictor plug on T4s and WBX, can't comment on T1s as I haven't done one in 25+ years. It is usually loaded up with trapped swarf.

The #4 bearing has its own restriction on this oil feed, the upstream restriction serves no useful purpose.
The bearing clearances themselves should be the restriction by far.

I pull and replace the plug to the #4 bearing on the Type 1 engine for the same reason...the newer #4 bearings (available for many years) already have a tiny inlet hole to control oil pressure...