Re: [xj-s] Banjo Fitting Washers

["Craig Sawyers" <craig@sawyers.demon.co.uk>]

Almost as soon as I sent the original message, I realised my mistake!
You're quite right, it is the annular groove in the pipe end that aligns
with the cross-hole in the bolt.  I found my "stock" washers caused
significant misalignment, so opted for the (cheap) correct part.  I was
fairly worried about the consequences of getting the thing together and no
oil going to the camshaft.  Provided the surfaces are clean, I can think of
no good reason that these things won't seal properly.  However, I agree that
if you were going to do this in a sound engineering way, you wouldn't have
come up with a banjo bolt.  A good hydraulic fitting would be much better.

Hope the head re-build is going OK.  What did you decide to do with the
dropped seat in the end?

Craig Sawyers
-----Original Message-----
From: Kirbert <palmk@mailer.gadcomm.net>
To: xj-s@jag-lovers.org <xj-s@jag-lovers.org>
Date: 07 July 1998 19:08
Subject: Re: [xj-s] Banjo Fitting Washers


> "Craig Sawyers" <craig@sawyers.demon.co.uk>:
> Watch those washers, Kirkby.  I thought of replacing mine with some
> "standard" ones I had lying around.  If you do this the hole in the banjo
> bolt doesn't align with the feed hole in the tappet block!  The thin
washers
> come with a sort of pressed in ridge which mashes flat when you tighten
the
> bolt.  Needless to say, you absolutely MUST use these odd washers, and not
> the standard thickness.

Well, I don't find it "needless to say" at all.  There's no
alignment problem with the tappet block, the oil comes out the END
of the bolt to go to the cam bearings.  The alignment with the supply
pipe is interesting, since the hole across the banjo bolt doesn't
line up well with the annulus in the fitting even with NO washer
involved, and I may just elongate the hole or chamfer to improve
flow.  But it appears to me that the washer would have to be REALLY
thick -- like 1/16" or thicker -- before it would have a serious
detrimental effect on flow.  And the whole issue only applies to the
washer between the fitting and the head of the bolt; a thicker washer
between the fitting and the tappet block would make no difference at
all, and may help eliminate one of the causes of leaks.

Actually, I am sorely tempted to abandon that entire piece of
plumbing providing oil to the tappet blocks and sending units and
replacing it with some hydraulic plumbing with actual FITTINGS at the
connections instead of these hokey banjo fittings.  But I really
don't have a problem with it, so I'll probably leave it alone.

-- Kirbert      |     If anything is to be accomplished,
                 |     some rules must be broken.
                 |          - Palm's Postulate

---

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• Re: [xj-s] Banjo Fitting Washers
• From: "Kirbert" <palmk@mailer.gadcomm.net>

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