Smokin'

<A.Clews.TakeThisOut@DENTURESsussex.ac.uk> wrote in message
news:fpub1g$jf$1@south.jnrs.ja.net...

Wotcha.

>> p.s. the B31 is still smoking - I even pulled the top end off the engine
>> again this morning, just in case I'd missed anything earlier. I do like
>> these engines.
>
> That's just as well, seeing as you're becoming ever more intimately
> acquainted with them!

It's just practice for when I pull the B33 engine apart.
After a few more years of this, I may be ready to try an engine with more
than one cylinder



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^..^ Lone Wolf - aiming for an 'ology' in mono-pot engines
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"jean" <try_to.RemoveThis@find.it> wrote in message
news:bc6dndNNtPW6zl7anZ2dnUVZ_tCrnZ2d@giganews.com...

Wotcha.

>> the tyre off the rim . . . . . only to find tyre lever number three was
>> happily nesting inside the rear tyre. Ooops.
>
> Maybe you "forgot" something in the engine too

I just *knew* those piston rings on the kitchen table were off something.



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"platypus" <monotreme.RemoveThis@blueyonder.co.uk> wrote in message
news:UQZxj.15686$XI.5425@text.news.virginmedia.com...
> ^..^ Lone Wolf wrote:

Wotcha.

>> Next move was to buy a "known good"
>> piston and have the bore done to match. Seems that was what the
>> previous owner had done.
>
> Still, you'll have all the spares you need if it ever seizes.

You don't know how true that is
I reckon I could cobble together a running / rolling bike with the "spare"
parts I have for both the B31
and my "project B33".
Anyroad - my nice shiny black B31 is off for MOT now - you just watch it
piss down with rain in about an hour's time.


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^..^ Lone Wolf
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<A.Clews.DeleteThis@DENTURESsussex.ac.uk> wrote in message
news:fqbt21$44f$1@south.jnrs.ja.net...

Wotcha.

> Yebbut, has it stopped the smoking, that's what we're all waiting to hear.

Has it bollocks
I'm still awaiting a shiny, new oil pump. . . . . until then, I'll just stop
the engine when unlocking the garage doors.


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^..^ Lone Wolf
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"Grimly Curmudgeon" <grimly4REMOVE DeleteThis @REMOVEgmail.com> wrote in message
news:p96ls3hv6q947m48hkq4hdjgnv51mr4f9j@4ax.com...

Wotcha.

> OK, assuming the bore, piston and oil rings are good (and that's a big
> assumption), the mention of the baffle plate on later engines makes me
> think it needs one. It certainly wasn't the first or last engine to have
> needed one.

Hmm. Now that's an idea.
I'll have a play with the spare crankcases and see what can be rigged up.
Preferably something that can be "retro-fitted" without splitting the cases.
It's just that I've never come across a BSA pre-unit single that does this
smoking trick. I know *something* must be causing it, and it's annoying me
that I can't find it. How simple an engine can you get ? . . . . and I
still can't stop it smoking. The oil pump is the only thing that has not
been changed for new. I've fitted spare pumps. Pumps that have been taken
out of non-smoking engines, but that ain't the same as a new one. The new
oil pump is on the way, but I don't know when it will arrive.


> Btw, that 'known good' piston, was it carefully mic'd up?

Oh yes. Having been caught out by a rogue piston before, this one was given
a good going over. The company that did the re-bore are first rate too.
Having said that, I still measured the bore when I got it back

I've been out on the bike most of this morning, and it runs quite happily,
no smoking when it's being used. No smoking when ticking over at traffic
lights. It doesn't even smoke on the over-run ( which considering the bore
and piston are new, and the head's been re-conditioned, I wouldn't expect it
to ). But the moment you leave it for thirty seconds or so on the side
stand, the exhaust genie appears. Trouble is, this bloody genie doesn't
grant you three wishes.

Cheers.


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^..^ Lone Wolf - getting quite used to things that smoke in the night
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"^..^ Lone Wolf" <lonewolf DeleteThis @moonshiners.org.uk> wrote in message
news:fpkh5c$10g0$1@energise.enta.net...

Wotcha.

> I'm still waiting for a new oil pump to arrive.

And arrive it did. All nice and brand new - even comes with a
"susstificate" to prove that it can deliver one pint of SAE 30 oil in just
over three minutes - and, more importantly, scavenge 1 pint of SAE 30 oil
in just over one minute. The poor unsuspecting B31 was laid over and the
new oil pump fitted - and guess what ? It still bloody smokes. The new
pump promptly came back out - it's going in my all singing, all dancing,
project B33, so it ain't been a waste of money.
The only other thing I've found out about this engine is that it's not as
old as it's supposed to be. According to the engine number, YB31 ****, it
was one of the last made, possibly around 1962 / 1963 - the bike is
registered as 1959. Maybe there was some kind of modification done to the
last engines ?

Anyroad - as far as I'm concerned, the thing can smoke as much as it likes.
I'm just going to use the bike, and should I ever find a way to stop it
smoking when on the sidestand, then all well and good - if not - then so be
it.


Bloody typical. National no-smoking day. Just to rub it in, the B31 smokes
like a chimney - I've packed in smoking - and, to add insult to injury, it's
my birthday as well. Might as well take the bike out for a smoke then


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^..^ Lone Wolf <lonewolf DeleteThis @moonshiners.org.uk> wrote:

> ven comes with a
> "susstificate" to prove that it can deliver one pint of SAE 30 oil in just
> over three minutes - and, more importantly, scavenge 1 pint of SAE 30 oil
> in just over one minute. The poor unsuspecting B31 was laid over and the
> new oil pump fitted - and guess what ? It still bloody smokes.

LOL.


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GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
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^..^ Lone Wolf <lonewolf RemoveThis @moonshiners.org.uk> wrote in message
>
> Anyroad - as far as I'm concerned, the thing can smoke as much as it
likes.
> I'm just going to use the bike, and should I ever find a way to stop it
> smoking when on the sidestand, then all well and good - if not - then so
be
> it.
>
> Bloody typical. National no-smoking day. Just to rub it in, the B31
smokes
> like a chimney - I've packed in smoking - and, to add insult to injury,
it's
> my birthday as well. Might as well take the bike out for a smoke then
>

LOL nice one



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In article <fr9aca$1t4a$1@energise.enta.net>, ^..^ Lone Wolf
<lonewolf.RemoveThis@moonshiners.org.uk> writes
>Bloody typical. National no-smoking day. Just to rub it in, the B31 smokes
>like a chimney - I've packed in smoking - and, to add insult to injury, it's
>my birthday as well. Might as well take the bike out for a smoke then

<Barwick Green... >

Regards,

Simonm.

--
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SIMON MUIR, BRISTOL UK
EUROPEANS AGAINST THE EU http://www.eurofaq.freeuk.com/
GT250A'76 R80/RT'86 110CSW TDi'88 www.kc3ltd.co.uk/profile/eurofollie/
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^..^ Lone Wolf wrote:

>The only other thing I've found out about this engine is that it's not as
>old as it's supposed to be. According to the engine number, YB31 ****, it
>was one of the last made, possibly around 1962 / 1963 - the bike is
>registered as 1959. Maybe there was some kind of modification done to the
>last engines ?

It's already been said somewhere earlier in the thread.

Try this, from Ken Young:

One other point, some British singles had baffles in the crankcase
throat to limit oil splash, don't know if A: that was the case with
the B31 and B: if so they have been removed. If the baffles were
originally fitted they should be on a BSA parts list for the model.

HTH


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from
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