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Stag engines

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  #21  
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Dave Plowman (News)
 
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Default Re: Stag engines - 04-17-2007 , 01:18 PM






In article <MPG.208ebae823fb822698a53f (AT) news (DOT) karoo.co.uk>,
Conor <conor.turton (AT) gmail (DOT) com> wrote:
Quote:
SU Carbs? Usually what stops them from being of any use is a lack of
oil in the dashpot.
Old wives tale. That won't stop the engine starting. The prime reason for
the damper is to momentarily enrich the mixture on sudden acceleration,
and reduce piston flutter.

But Stags have Strombergs...

--
*Why is "abbreviated" such a long word?

Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.


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  #22  
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Dave Plowman (News)
 
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Default Re: Stag engines - 04-17-2007 , 01:20 PM






In article
<4624c841$0$4614$61c65585 (AT) un-2park-reader-01 (DOT) sydney.pipenetworks.com.au>,
Rob <mesa (AT) mine (DOT) com> wrote:
Quote:
Also add to what Dave said that box on the Stag/Sprint/2500 is a very
strong box and capible of taking far more power.
If this is the case why didn't it get used for other makes in the range?
BL were short of a decent box for bigger engines.

--
*Stable Relationships Are For Horses.

Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
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  #23  
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Rob
 
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Default Re: Stag engines - 04-17-2007 , 06:38 PM



Dave Plowman (News) wrote:
Quote:
In article <MPG.208ebae823fb822698a53f (AT) news (DOT) karoo.co.uk>,
Conor <conor.turton (AT) gmail (DOT) com> wrote:

SU Carbs? Usually what stops them from being of any use is a lack of
oil in the dashpot.


Old wives tale. That won't stop the engine starting. The prime reason for
the damper is to momentarily enrich the mixture on sudden acceleration,
and reduce piston flutter.



and how many people run around on empty dashpots - heaps.


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  #24  
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Willy Eckerslyke
 
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Default Re: Stag engines - 04-27-2007 , 05:39 AM



OK, bit of an update...
I ran a compression test on the engine and it seems reasonably healthy.
Most cylinders read between 11 and 12 bar, with just one down at 10 bar.
A drop of oil in the bore pushed the low one up to 14 bar. Same amount
of oil in one of the higher reading cylinders pushed that one up to 13
bar. Didn't bother with oil in the others.
So, while I'm interpreting that as a bit of wear, it shouldn't be
stopping the engine running.

So last night I removed the carbs for a closer look at them. Blimey,
that's an easy job - just one nut to undo and they both lift off
together - nice!
First thing I see is a pool of petrol sitting in the inlet manifold.
There are a couple of dipped areas directly below the carbs mounting
which were quarter of an inch deep in fuel. No wonder it won't start!

I only had time to look in the float chambers and test the float valves.
They were sealing OK when I tried blowing through while holding them
closed. The floats themselves looked grubby but didn't appear to be full
of petrol.

So I suppose I'll have to strip the carbs down and see what's what. I
suspect they've been sitting dry for a few years before someone else and
then I tried to get the engine running.

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  #25  
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Dave Plowman (News)
 
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Default Re: Stag engines - 04-27-2007 , 08:18 AM



In article <59e27hF2kitraU1 (AT) mid (DOT) individual.net>,
Willy Eckerslyke <oss108no_spam (AT) bangor (DOT) ac.uk> wrote:
Quote:
So I suppose I'll have to strip the carbs down and see what's what. I
suspect they've been sitting dry for a few years before someone else and
then I tried to get the engine running.
It's all too easy to go straight for an engine's so called weak spots - of
which the Stag has a few - without checking the basics first. I'll bet
everyone reading this has done something similar.

--
*Rehab is for quitters

Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.


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  #26  
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Willy Eckerslyke
 
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Default Re: Stag engines - 04-30-2007 , 02:52 AM



Dave Plowman (News) wrote:

Quote:
It's all too easy to go straight for an engine's so called weak spots - of
which the Stag has a few - without checking the basics first. I'll bet
everyone reading this has done something similar.
I've been making a habit of it this month. I changed a wheel bearing on
the Audi, then found the problem was just loose wheel nuts on the
opposite side, which I was damned sure I'd checked beforehand!

Anyway, on a happier note, the Stag engine now runs! I fitted a pair of
Range Rover Stromberg carbs, bodged the choke cable and it fired up
straight away.
Good news is that it runs nicely with no nasty noises.
Bad news is the mayonaise that appeared under the oil cap after it had
run for a few minutes.
Ah well... such is life.


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  #27  
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Ian Johnston
 
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Default Re: Stag engines - 04-30-2007 , 03:12 AM



On Mon, 30 Apr 2007 08:52:11 +0100, Willy Eckerslyke wrote:

Quote:
Bad news is the mayonaise that appeared under the oil cap after it had
run for a few minutes.
Oil full of water after months of condensation while disused?

Ian


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  #28  
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Willy Eckerslyke
 
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Default Re: Stag engines - 04-30-2007 , 04:37 AM



Ian Johnston wrote:

Quote:
On Mon, 30 Apr 2007 08:52:11 +0100, Willy Eckerslyke wrote:


Bad news is the mayonaise that appeared under the oil cap after it had
run for a few minutes.


Oil full of water after months of condensation while disused?
I'd like to think so, but it's a bit of a view through rose tinted
spectacles. The oil was clean to the point of new looking before I
started the engine, suggesting that the previous tinkerer had replaced
it recently. Undersides of the rocker covers looked suspiciously
spotless too. So I'd be surprised if there was enough condensation left
in there to have this much of an effect.
I reckon it's time to pop it on eBay with an honest description and see
how it goes.


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  #29  
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Dave Plowman (News)
 
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Default Re: Stag engines - 04-30-2007 , 04:54 AM



In article <59llgvF2kq1tdU1 (AT) mid (DOT) individual.net>,
Willy Eckerslyke <oss108no_spam (AT) bangor (DOT) ac.uk> wrote:
Quote:
Anyway, on a happier note, the Stag engine now runs! I fitted a pair of
Range Rover Stromberg carbs, bodged the choke cable and it fired up
straight away.
Good news is that it runs nicely with no nasty noises.
Bad news is the mayonaise that appeared under the oil cap after it had
run for a few minutes.
Ah well... such is life.
Before assuming head gasket problems etc make sure all the engine
breathers are clear. On a poorly maintained unit they *will* be blocked.
I've not done this job on a Stag, but on the Rover V-8 EFI it usually
means *drilling* out the gunge from the throttle body intake...

--
*Warning: Dates in Calendar are closer than they appear.

Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.


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  #30  
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Ian Johnston
 
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Default Re: Stag engines - 04-30-2007 , 04:56 AM



On Mon, 30 Apr 2007 10:37:49 +0100, Willy Eckerslyke wrote:

Quote:
I reckon it's time to pop it on eBay with an honest description and see
how it goes.
Disconnect one side and sell it as a Dolly Sprint engine with cosmetic
additions. Might suit the sort of people who put 5" diameter tail pipes
on 1 litre engines ...

Ian


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