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I had the DW header pipes on my 100 wrapped with heat tape for about two
years, then took it off and went to a reflective shield. I noticed no
deterioration of the pipes when I changed over to the shield and that was
ten years ago.
I don't believe that polishing is not the way to go as sometimes the
process brings impurities to the surface and causes a lot of corrosion,
esp. in SS. I have Jet-Hot coating or the like on the headers of all of my
race cars and everything is intact and nice and shiny!
Best--Michael Oritt
On Sun, Nov 15, 2015 at 9:52 AM, Bob Spidell <bspidell@comcast.net> wrote:
> I'll add that, although I wrapped the mild steel downpipes on my BJ8 and
> have no problems--that I know of--I've become reluctant to recommend it.
> I've seen photographic evidence of pipes being severely eroded by wrapping;
> though it appears to be a hit-or-miss issue, and may be due, in part, to
> how they were wrapped and what they were wrapped with (I have to believe if
> it was a very common problem nobody would buy the wrap and companies would
> cease to sell it). I wouldn't expect ceramic coating to be a problem, at
> least if the pipes were coated both inside and outside (inside only might
> even be better).
>
> Here in the colonies we mostly have to use gas with 10% ethanol ('pure'
> gas is available at some stations, but it's relatively rare). On a warm
> day, if my engine is hot and shut down for less than a couple hours and
> restarted I'll get some stumbling until air flow has cooled everything off
> a bit. I can't say with absolute certainty that the gasahol is the
> problem, but I don't recall this ever happening before the new formulation
> became prevalent. I think ceramic coating the manifold might cure this
> problem.
>
> Bob
>
> ------------------------------
> *From: *"Oudesluys" <coudesluijs@chello.nl>
> *To: *"healeys" <healeys@autox.team.net>
> *Sent: *Sunday, November 15, 2015 2:28:55 AM
> *Subject: *Re: [Healeys] Jet-coating, wrap or do nothing to stainless
> headers?
>
> Mirror polish them and leave them alone. Wrapping may lead to burning the
> metal away, coating possibly a similar story. By polishing you reduce the
> radiation of heat so the carbs should remain relatively cool. Anyway
> Webers/DellOrto's do not have the tendency to boil fuel. Also a car with an
> electric fuel pump does not normally have problems with fuel vapour lock.
> Kees Oudesluijs
>
>
>
>
> Op 15-11-2015 om 11:11 schreef Simon Lachlan:
>
> I have stainless headers going down into a big bore(?) exhaust.
>
> Opinions seem to vary as to the merits of wrapping, coating or doing
> nothing to them .
>
> I have Webers above them, but I suspect, in my ignorance, that these are
> maybe less prone to evaporation issues than SUs.
>
> What does the panel think?
>
> See attached for a well researched synopsis. (Not by me!)
>
> Simon
>
> \
>
>
>
>
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>
--001a1134d6948a8cfe052495b40a
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:rgb(51,51,255)=
">I had the DW header pipes on my 100 wrapped with heat tape for about two =
years, then took it off and went to a reflective shield.=C2=A0 I noticed no=
deterioration of the pipes when I changed over to the shield and that was =
ten years ago.</div><div class=3D"gmail_default" style=3D"color:rgb(51,51,2=
55)"><br></div><div class=3D"gmail_default" style=3D"color:rgb(51,51,255)">=
I don't believe that polishing is not the way to go as sometimes the pr=
ocess brings impurities to the surface and causes a lot of corrosion, esp. =
in SS.=C2=A0 I have Jet-Hot coating or the like on the headers of all of my=
race cars and everything is intact and nice and shiny! =C2=A0</div><div cl=
ass=3D"gmail_default" style=3D"color:rgb(51,51,255)"><br></div><div class=
=3D"gmail_default" style=3D"color:rgb(51,51,255)">Best--Michael Oritt</div>=
</div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Sun, Nov=
15, 2015 at 9:52 AM, Bob Spidell <span dir=3D"ltr"><<a href=3D"mailto:b=
spidell@comcast.net" target=3D"_blank">bspidell@comcast.net</a>></span> =
wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bord=
er-left:1px #ccc solid;padding-left:1ex"><div><div style=3D"font-family:Ari=
al;font-size:12pt;color:#000000"><div>I'll add that, although I wrapped=
the mild steel downpipes on my BJ8 and have no problems--that I know of--I=
've become reluctant to recommend it.=C2=A0 I've seen photographic =
evidence of pipes being severely eroded by wrapping; though it appears to b=
e a hit-or-miss issue, and may be due, in part, to how they were wrapped an=
d what they were wrapped with (I have to believe if it was a very common pr=
oblem nobody would buy the wrap and companies would cease to sell it).=C2=
=A0 I wouldn't expect ceramic coating to be a problem, at least if the =
pipes were coated both inside and outside (inside only might even be better=
).<br></div><div><br></div><div>Here in the colonies we mostly have to use =
gas with 10% ethanol ('pure' gas is available at some stations, but=
it's relatively rare).=C2=A0 On a warm day, if my engine is hot and sh=
ut down for less than a couple hours and restarted I'll get some stumbl=
ing until air flow has cooled everything off a bit.=C2=A0 I can't say w=
ith absolute certainty that the gasahol is the problem, but I don't rec=
all this ever happening before the new formulation became prevalent.=C2=A0 =
I think ceramic coating the manifold might cure this problem.<br></div><div=
><br></div><div>Bob<br></div><div><br></div><hr><div style=3D"color:#000;fo=
nt-weight:normal;font-style:normal;text-decoration:none;font-family:Helveti=
ca,Arial,sans-serif;font-size:12pt"><b>From: </b>"Oudesluys" <=
<a href=3D"mailto:coudesluijs@chello.nl"; target=3D"_blank">coudesluijs@chel=
lo.nl</a>><br><b>To: </b>"healeys" <<a href=3D"mailto:heale=
ys@autox.team.net" target=3D"_blank">healeys@autox.team.net</a>><br><b>S=
ent: </b>Sunday, November 15, 2015 2:28:55 AM<br><b>Subject: </b>Re: [Heale=
ys] Jet-coating, wrap or do nothing to stainless headers?<span class=3D""><=
br><div><br></div><div>Mirror polish them and leave them alone. Wrapping ma=
y lead to burning the metal away, coating possibly a similar story. By poli=
shing you reduce the radiation of heat so the carbs should remain relativel=
y cool. Anyway Webers/DellOrto's do not have the tendency to boil fuel.=
Also a car with an electric fuel pump does not normally have problems with=
fuel vapour lock.<br> Kees Oudesluijs<br> <br> <br> <br> <br> Op 15-11-201=
5 om 11:11 schreef Simon Lachlan:<br></div></span><blockquote><span class=
=3D""><div><p class=3D"MsoNormal">I have stainless headers going down into =
a big bore(?) exhaust.</p><p class=3D"MsoNormal">Opinions seem to vary as t=
o the merits of wrapping, coating or doing nothing to them .</p><p class=3D=
"MsoNormal">I have Webers above them, but I suspect, in my ignorance, that =
these are maybe less prone to evaporation issues than SUs.</p><p class=3D"M=
soNormal">What does the panel think?</p><p class=3D"MsoNormal">See attached=
for a well researched synopsis. (Not by me!)</p><p class=3D"MsoNormal">Sim=
on</p></div><br><fieldset></fieldset></span>\<br></blockquote><div><br></di=
v></div><div><br></div></div></div><br>____________________________________=
___________<br>
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
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