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I'll second that: I have DW exhaust headers with no flex pipe in the
system and exhaust wrap that has been on for 23 years with no problems.
Best--Michael Oritt
On Fri, Oct 25, 2019, 8:36 AM Chris Dimmock <austin.healey@gmail.com> wrote=
:
> I have always had extractor (header) type manifolds fitted to my Healeys
> since 1986.
> My BN1, and my BJ8 - No flex pipe - all solid pipe - just like my previou=
s
> Sprites.
> The extractor exhaust on my Healey 3000 - which has been wrapped since
> 1995 - has just recently celebrated its 24th anniversary on the Black and
> White car.
> So no flex joint pipe. Mild steel - wrapped - and I'm now on my second
> muffler with my side exit exhaust.
> Ok - the first one had some repairs - but all the damage and wear was roa=
d
> clearance related.
> Ignore the flex pipe. I've never had one ever in 35 years!
> Ignore the doomsayers who will tell you your mild steel exhaust will burn
> up with exhaust wrap. It won't. Mine didn't.
> My extractors are still fine. And I'm on my second muffler - and my groun=
d
> clearance is probably less than yours!
> The only enemy is ashphalt!!
> Best
> Chris
> www.myaustinhealey.com
>
>
>
> On 25 Oct 2019, at 12:52 am, Neil McDonald <nmcd10@gmail.com> wrote:
>
> An exciting subject indeed!
>
> I am about to fit an unused mild steel down pipe that I have had on the
> shelf for maybe ten years. No sign of rust but I am away from home right
> now so can not test it for flex. I might zap it with WD40 before fitting =
-
> can=E2=80=99t hurt.
>
> The question is - when brand new do the mild steel down pipes ever show
> any sign of flex?
>
> Neil
> BN6
>
> On Thu, Oct 24, 2019 at 2:42 PM Perry via Healeys <healeys@autox.team.net=
>
> wrote:
>
>> Listers
>>
>> As a follow up to my post on 10/18 on this exciting subject, I decided t=
o
>> do an experiment with a couple downpipes I had in the parts bin. Both pi=
pes
>> are new old stock and have never been on a car. One is stainless and th=
e
>> other mild steel. Both have been laying on a shelf in the garage for at
>> least 9 years.
>>
>> The test was to measure how much deflection was noted in the flex portio=
n
>> of the downpipe when the tip (where it enters the muffler) is loaded wit=
h a
>> weight. The upper portion of the pipe was firmly held by the bench vice.
>>
>> Should have started with something less then 10 pounds but the stainless
>> moved considerably under that weight. The mild steel did not budge.
>>
>> At 47 pounds I heard a creaky noise but no movement on the mild steel. I
>> then applied an unspecified force with my hand to the 47 pounds and no
>> movement.
>>
>> My conclusion is that the mild steel flex pipe, once it takes a set, ie,
>> Gets Rusty, does not flex. It is the weak link that will fail but it mig=
ht
>> as well be a piece of regular pipe.
>>
>> Perry
>>
>>
>>
>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=3D550986> for
>> Windows 10
>>
>>
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation $12.75
>>
>> Archive: http://www.team.net/pipermail/healeys
>> http://autox.team.net/archive
>>
>> Healeys@autox.team.net
>> http://autox.team.net/mailman/listinfo/healeys
>>
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/healeys/nmcd10@gmail.com
>>
>> --
> ____________________
> Neil & Pam McDonald
>
> Email: nmcd10@gmail.com
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive
>
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> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/austin.healey@gmail.com
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
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> Archive: http://www.team.net/pipermail/healeys
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>
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<div dir=3D"auto">I'll second that:=C2=A0 I have DW exhaust headers wit=
h no flex pipe in the system and exhaust wrap that has been on for 23 years=
with no problems.<div dir=3D"auto"><br></div><div dir=3D"auto">Best--Micha=
el Oritt</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Fri, Oct 25, 2019, 8:36 AM Chris Dimmock <<a href=3D"=
mailto:austin.healey@gmail.com";>austin.healey@gmail.com</a>> wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex"><div dir=3D"auto"><div>I have always ha=
d extractor (header) type manifolds fitted to my Healeys since 1986.=C2=A0<=
/div><div id=3D"m_2837834147212721623AppleMailSignature">My BN1, and my BJ8=
- No flex pipe - all solid pipe - just like my previous Sprites.=C2=A0</di=
v><div id=3D"m_2837834147212721623AppleMailSignature">The extractor exhaust=
on my Healey 3000 - which has been wrapped since 1995 - has just recently =
celebrated its 24th anniversary on the Black and White car.=C2=A0</div><div=
id=3D"m_2837834147212721623AppleMailSignature">So no flex joint pipe. Mild=
steel - wrapped - and I'm now on my second muffler with my side exit e=
xhaust.=C2=A0</div><div id=3D"m_2837834147212721623AppleMailSignature">Ok -=
the first one had some repairs - but all the damage and wear was road clea=
rance related.=C2=A0</div><div id=3D"m_2837834147212721623AppleMailSignatur=
e">Ignore the flex pipe. I've never had one ever in 35 years!</div><div=
id=3D"m_2837834147212721623AppleMailSignature">Ignore the doomsayers who w=
ill tell you your mild steel exhaust will burn up with exhaust =C2=A0wrap. =
It won't. Mine didn't.=C2=A0</div><div id=3D"m_2837834147212721623A=
ppleMailSignature">My extractors are still fine. And I'm on my second m=
uffler - and my ground clearance is probably less than yours!</div><div id=
=3D"m_2837834147212721623AppleMailSignature">The only enemy is ashphalt!!=
=C2=A0</div><div id=3D"m_2837834147212721623AppleMailSignature">Best</div><=
div id=3D"m_2837834147212721623AppleMailSignature">Chris</div><div id=3D"m_=
2837834147212721623AppleMailSignature"><a href=3D"http://www.myaustinhealey=
.com" target=3D"_blank" rel=3D"noreferrer">www.myaustinhealey.com</a>=C2=A0=
</div><div id=3D"m_2837834147212721623AppleMailSignature"><br><br></div><di=
v><br>On 25 Oct 2019, at 12:52 am, Neil McDonald <<a href=3D"mailto:nmcd=
10@gmail.com" target=3D"_blank" rel=3D"noreferrer">nmcd10@gmail.com</a>>=
wrote:<br><br></div><blockquote type=3D"cite"><div><div><div dir=3D"auto">=
An exciting subject indeed!</div></div><div dir=3D"auto"><br></div><div dir=
=3D"auto">I am about to fit an unused mild steel down pipe that I have had =
on the shelf for maybe ten years. No sign of rust but I am away from home r=
ight now so can not test it for flex. I might zap it with WD40 before fitti=
ng - can=E2=80=99t hurt.=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D=
"auto">The question is - when brand new do the mild steel down pipes ever s=
how any sign of flex?</div><div dir=3D"auto"><br></div><div dir=3D"auto">Ne=
il</div><div dir=3D"auto">BN6</div><div><br><div class=3D"gmail_quote"><div=
dir=3D"ltr" class=3D"gmail_attr">On Thu, Oct 24, 2019 at 2:42 PM Perry via=
Healeys <<a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank" re=
l=3D"noreferrer">healeys@autox.team.net</a>> wrote:<br></div><blockquote=
class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc soli=
d;padding-left:1ex"><div lang=3D"EN-US" link=3D"blue" vlink=3D"#954F72"><di=
v><p class=3D"MsoNormal">Listers</p><p class=3D"MsoNormal">As a follow up t=
o my post on 10/18 on this exciting subject, I decided to do an experiment =
with a couple downpipes I had in the parts bin. Both pipes are new old stoc=
k and have never been on a car.=C2=A0 One is stainless and the other mild s=
teel. Both have been laying on a shelf in the garage for at least 9 years. =
</p><p class=3D"MsoNormal">The test was to measure how much deflection was =
noted in the flex portion of the downpipe when the tip (where it enters the=
muffler) is loaded with a weight. The upper portion of the pipe was firmly=
held by the bench vice. </p><p class=3D"MsoNormal">Should have started wit=
h something less then 10 pounds but the stainless moved considerably under =
that weight.=C2=A0 The mild steel did not budge.</p><p class=3D"MsoNormal">=
At 47 pounds I heard a creaky noise but no movement on the mild steel. I th=
en applied an unspecified force with my hand to the 47 pounds and no moveme=
nt. </p><p class=3D"MsoNormal">My conclusion is that the mild steel flex pi=
pe, once it takes a set, ie, Gets Rusty, does not flex. It is the weak link=
that will fail but it might as well be a piece of regular pipe.</p><p clas=
s=3D"MsoNormal">Perry</p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p =
class=3D"MsoNormal">Sent from <a href=3D"https://go.microsoft.com/fwlink/?L=
inkId=3D550986" target=3D"_blank" rel=3D"noreferrer">Mail</a> for Windows 1=
0</p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div></div>___________=
____________________________________<br>
Support <a href=3D"http://Team.Net"; target=3D"_blank" rel=3D"noreferrer">Te=
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</blockquote></div></div>-- <br><div dir=3D"ltr" data-smartmail=3D"gmail_si=
gnature"><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div>=
<div>____________________<br>Neil & Pam McDonald<br><div><br></div></di=
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