[Healeys] BN2 Incontinence

[Michael Oritt]

Having just this week replaced the tach cable on my 100 I can attest that
it is on the left side of the engine.  While it might be possible to attack
it from above in most cars the CAB on my LeMans precluded that but It is
fairly easy to get at from underneath.

On Wed, May 14, 2025 at 12:52 AM Patrick and Caroline Quinn <
p.cquinn at outlook.com> wrote:

> G’day
>
>
>
> In a four-cylinder engine in the BN2 the tach drive is located on the
> driver’s side (LHD car) on the side of the block under the exhaust.
>
>
>
> IN a six-cylinder it’s off the distributor drive on the other side.
>
>
>
> Hoo Roo
>
>
>
> Patrick Quinn
>
> Blue Mountains, Australia
>
>
>
> *From:* Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Bob
> Spidell via Healeys
> *Sent:* Wednesday, 14 May 2025 12:32 PM
> *To:* Michael Salter <michaelsalter at gmail.com>
> *Cc:* Healeys <healeys at autox.team.net>
> *Subject:* Re: [Healeys] BN2 Incontinence
>
>
>
> Ah, yeah, now I remember having to route the OP line across the scuttle.
> But, the tach drive is off the distributor, on the R/H side, no? I replaced
> the seal when we rebuilt the engine.
>
> Tappet cover, IIRC, is on the L/H side; that was my first guess since the
> oil isn't contaminated (until it hits the pavement). I didn't learn until
> after the rebuild that one of the tappet cover screws has to be shorter,
> lest one of the tappets hit it; always wondered if I did that right or not.
>
> bs
>
> On 5/13/2025 7:22 PM, Michael Salter wrote:
>
> The oil pressure take off is on the right side of the engine Bob. My guess
> would be the tachometer drive, the seal on the shaft hardens and cracks (
> probably only about 70 years old, they don't make them to last) or the
> tappet cover. I  have found that the tappet cover screws need to be gently
> retightened af a few hours of operation. On the 100S they were all lock
> wired which tells you something!!
>
>
>
> M
>
>
>
> On Tue., May 13, 2025, 9:46 p.m. Bob Spidell via Healeys, <
> healeys at autox.team.net> wrote:
>
> Listers,
>
> Just noticed, after a short local drive my BN2 was peeing oil out the
> driver (L/H) side of the engine. I won't get to a diagnosis and fix for
> a couple weeks; just wondering if anybody has a guess. My first thought
> was the OP gauge fitting came loose or the line broke, but the gauge was
> indicating fine as was the temp gauge.
>
> Any guesses?
>
> Bob
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