Trevor,
I checked with Evan Powell who gave me the original advice and he says the
banjo bolt is a standard item usually available from people who deal in
hydraulic components. He also says that the diameter does vary as there are
different types available. I haven't looked for them as I modified the one I
had.
It would appear that Moss et al are not particularly worried about the
volume of oil going to the rockers, but on reflection it makes sense to me
to keep the flow down. After all, the idea is to ensure that oil reaches the
rockers as soon as you start your engine then the normal oil flow should
come into operation.
Evan's main concern, as I posted in my original mail, was the possible
diversion of too much oil from the main bearings , etc via the original oil
passages.
Best regards
Chris Leah
Durban, South Africa
1966 Spitfire Mk2
1960 Herald
-----Original Message-----
From: Trevor Jordan <tjordan@pa.ausom.net.au>
To: Chris Leah <crl@intekom.co.za>; Triumphs List <triumphs@autox.team.net>
Date: 24 June 1998 01:13
Subject: Re: re Rocker Arm Feed Kit
>Chris
>
>I fitted an oil line to my TR6 at the beginning of the year. The first
>banjo bolt broke when I tightened it and Moss sent a replacement. The
>first bolt was bored about 3.18 mm while the replacement was bored 1.98 mm
>(sorry about the measurements but I used imperial drill bits to establish
>the size of the holes).
>
>This does not sound like much, but the cross sectional area of the hole
>varies by a factor of 2.6. While this might explain why the first bolt
>snapped (it could not have been my clumsiness), it might also explain the
>comments about the amount of oil that flows to the head and runs down the
>valve guides, etc.
>
>There has obviously been a significant change in the design of this part
>(or the manufacturing tolerances/quality control are woeful), so it might
>be worth checking this part with the various suppliers. In my case, both
>came from Moss US, but the original line came from their New Jersey branch
>and the replacement bolt from their Goleta branch.
>
>Can these banjo bolts be purchased from independent sources (such as brake
>line suppliers) with a range of bore sizes? This would enable the oil flow
>to be optimized.
>
>Trevor Jordan
>74 TR6 CF29281U
>
>
>
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