REFLECTOR: Repairs exhaust Coting

Tue Sep 25 10:31:29 CDT 2012

DIY were is a good place to get the kit?

Love DIY
Ron
On 9/25/2012 9:32 AM, Mark Magee wrote:
> I believe the ceramic coatings are to be applied inside the exhaust 
> manifold. This keeps more heat moving downstream, and doesn't stress 
> the metallic structure by keeping the heat in the metal. Internal 
> ceramic coating is the preferred method vs all others, even vs 
> external wrapping. All external insulators will cause excessive heat 
> build up on any welds on the manifold and could crystallize them over 
> time, leading to failure.
> I once ceramic coated the exhaust manifold on a Cummins 8.3 and Jet 
> Hot gave very easy instructions how to do it right: yes you can do a 
> used manifold. Just tape off all the ports save one and pour diluted 
> sulfuric acid into the manifold (obviously off the engine). Leave it 
> in there a while to etch the metal and the pour it out. Rinse with 
> fresh water and then dry, I think I hit mine with a blow gun. Re-tape 
> the ports save one, mix the Jet Hot and pour it in. Rotate to coat and 
> let dry. It can be cured in an oven or by running the engine.
> Not that difficult. Racers of all variety are internally ceramic 
> coating almost everything downstream from the head: exhaust manifold, 
> inside of turbo housing, turbine blades and all exhaust piping all the 
> way to the outlet.
> Keeps the heat flowing more efficiently, protects the exhaust system 
> and turbo and reportedly gets much faster turbo spool up.
>
> Mark B. Magee
> N34XL
> Sent from IPhone 4S
>
> On Sep 25, 2012, at 8:29 AM, "Grover McNair" 
> <grover at mcnairperformance.com <mailto:grover at mcnairperformance.com>> 
> wrote:
>
>> The coating is applied to the outside after thorough cleaning, 
>> usually by bead blasting.
>>
>> Grover McNair
>>
>> ------------------------------------------------------------------------
>>
>> *From:*reflector-bounces at tvbf.org <mailto:reflector-bounces at tvbf.org> 
>> [mailto:reflector-bounces at tvbf.org] *On Behalf Of *Ron N VelocityXLFG
>> *Sent:* Tuesday, September 25, 2012 8:51 AM
>> *To:* Velocity Aircraft Owners and Builders list
>> *Subject:* Re: REFLECTOR: Repairs exhaust Coting
>>
>> Is the coating appied to the inside or out side of the exhaust.
>> can it be appied to a used exhaust?
>>
>> Ron
>>
>> On 9/23/2012 10:36 AM, Alex Balic wrote:
>>
>>> I agree- I ceramic coated mine, and it helps keep the heat from 
>>> radiating- the coating I had applied looks like polished SS.
>>>
>>> *From:*reflector-bounces at tvbf.org 
>>> <mailto:reflector-bounces at tvbf.org> 
>>> [mailto:reflector-bounces at tvbf.org] *On Behalf Of *Douglas Holub
>>> *Sent:* Sunday, September 23, 2012 8:46 AM
>>> *To:* Velocity Aircraft Owners and Builders list
>>> *Subject:* Re: REFLECTOR: Repairs
>>>
>>> One other thing I did to keep my exhaust pipes cool was to have them 
>>> ceramic coated.
>>>
>>>     ----- Original Message -----
>>>
>>>     *From:*Lou Stedman <mailto:stedmanlou at roadrunner.com>
>>>
>>>     *To:*Velocity Reflector <mailto:reflector at tvbf.org>
>>>
>>>     *Sent:*Sunday, September 23, 2012 8:58 AM
>>>
>>>     *Subject:*REFLECTOR: Repairs
>>>
>>>     Thanks to all who replied to my repair question on exhaust.
>>>     After reading your suggestions, I decided to cut an inch off my
>>>     cowl extensions, exposing about 1/4" of my pipe. At the same
>>>     time I enlarged the hole so I have better clearance. Hope this
>>>     does the trick. I'll will keep you informed.
>>>
>>>     No one responded to my rudder control horn repair question. Does
>>>     that mean I am the only one who has had to do this repair? Since
>>>     I didn't build this plane, I don't know what the control horn
>>>     looks like inside the rudder. I am assuming it is just a
>>>     straight piece of aluminum with a couple of holes to hold the
>>>     epoxy. My plan is to use a hacksaw blade and try to remove the
>>>     epoxy inside the rudder. Once I can remove the control horn,
>>>     I'll open up the hole a bit, fill it with epoxy and insert the
>>>     control horn. Duct tape should hold in the proper position for
>>>     curing. Any other suggestions are welcome. Thanks
>>>
>>>     Lou Stedman
>>>     Velocity SEFG
>>>     N7044Q
>>>     Olean, NY
>>>
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>
>
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