[Healeys] Jet-coating, wrap or do nothing to stainless headers?

[ATIGHTPROD at aol.com]

Heat and this ethanol fuel is a definite problem with my BN1 and I'm sure  
the same happens with BN2's also and from what Keith is saying, it seems to 
also  affect six cylinder folks as well. From what I heard, a lower boiling 
point for  the fuel has a lot to do with why the "vapor lock" symptoms 
occur. 
This is how I solved my problem with that happening while stuck in traffic, 
 starting up after sitting for a short time after a hot run, etc.
 
 
 
           
This is a marine bilge  fan I got off ebay, painted flat black and wired in 
next to my  radiator for easy removal and no holes drilled. 3" flex off 
both  sides, front goes to right behind grille and sucks cold air in. Rear  
goes right to front float bowl.
    
Better view of  install. Simple. My car is a driver and I had a terrible 
time with  these new fuels, so the sight of the install doesn't bother me as 
it  solved all those problems.
    
 
The 3" flex is bent and pulled right to the float bowl. If I  sit, I turn 
the fan on from a switch inside the cockpit and let  it run for about 30 
seconds before firing up and now problem. When  stuck in traffic, flick the 
switch and instant cold air stops vapor  lock. When going down the road, flip 
the switch and the fan turns  off. 
 
 



Steven Kingsbury
BN1 #598
 
 
 
In a message dated 11/15/2015 8:15:42 A.M. Pacific Standard Time,  
mottman55 at gmail.com writes:

This is a really interesting survey, but what about paint?   I have a set 
of mild steel headers that I plan to put on a bugeye I'm  restoring.  I don't 
really want to leave them bare, and I was planning on  painting them with 
high-temp paint.  


On a slightly different note, my experience with heat and rough running  in 
my BT7 is exactly the same as Bob's.  I have come to accept that it is  
'normal' behavior for these cars although I've always wondered about wrapping  
the the exhaust manifold to decrease the heat load on the carbs. 


Keith 

On Sun, Nov 15, 2015 at 3:11 AM, Simon Lachlan 
<_simon.lachlan at homecall.co.uk_ (mailto:simon.lachlan at homecall.co.uk) > wrote:


 
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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