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Rb head oil drain dimensions

Chids34
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Chids34 Explorer

Chids34

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Rb head oil drain dimensions

Hi all,

I've been looking at buying a rear head oil drain kit for my 25/30 such as the one spool or Franklin engineering make.

However I work in a machine shop and could easily make such a drain myself, I was wondering however if anyone had one lying around they could take some measurements off (preferably vernier)

Mainly chasing total width, length of drain spigot, diameter of drain spigot, the dimensions of the oil ring groove, pcd of bolt holes. If anyone has the dimensions I'd be happy to make extras at a fraction of the cost! Thanks

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https://www.sau.com.au/forums/topic/468397-rb-head-oil-drain-dimensions/
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KiwiRS4T Grand Master

KiwiRS4T

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8 hours ago, Chids34 said:

I would disagree that they don't do anything, many people have this oiling problems this is a pretty simple fix. At worst it avoids a potential problem.

If you are serious about preventing an oiling problem read (at least the last third) of this thread and you will realise that the rear head drain hasn't helped anyone:

 

KiwiRS4T Grand Master

KiwiRS4T

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7 hours ago, iruvyouskyrine said:

They sort of work, but not in the way you think they do. Read the oil control thread to get a more complete understanding of RB oil control.

I haven't seen any evidence that they have done anything good. In fact having seen what comes into the catch can from the sump breathers I can't see that piping that up to the back of the cam covers is a good thing.

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