On Sat, 22 Feb 2003, at around 21:03:32 local time, William Davies
<bill@rarebits4classics.co.uk> wrote:
>
>----- Original Message -----
>From: Michael Hargreave Mawson <OC@46thFoot.com>
>>
>> So, how about combining both approaches - remove forward brackets *and*
>> gasket? Suicidal, or a recipe for trouble-free motoring, do you
>> suppose?
>
>Hi Mike,
> In my experience, even the slightest exhaust leak at the downpipe
>joint (on a 1500) results in significant power loss.
Certainly true in my case.
> I'm sure it would be possible to have your engine tuned with the joint
>in this condition, but I'm not a tuning guru so I'll bow out on that
>score.
Are you saying that it is going to be impossible to create an
exhaust-gas-tight joint without a gasket?
> It feels like a bodge to me rather than a solution.
If so, I would agree!
>For peace of mind the best fix is to ditch the standard manifold and
>replace with a well made tubular design (shop around as there is some
>rubbish about). Firstly expensive, secondly I know you are reluctant to
>deviate from original spec, but in all honesty the original manifold
>design is dreadful. I have been told that the 1300 type manifold &
>exhaust (single downpipe) is adequate for use on a standard 1500, but
>I've no personal experience here.
I see this as very much a last resort - for the two reasons you mention.
I'm fairly sure that I have a spare gasket somewhere, and I think I will
get some new fasteners and try to fit it, loosening and removing the
front exhaust pipe brackets while I'm at it.
ATB
--
Mike
Ellie - 1963 White Herald 1200 Convertible GA125624 CV
Connie - 1968 Conifer Herald 1200 Saloon GA237511 DL
Carly - 1977 Inca Yellow Spitfire 1500 FH105671
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