REFLECTOR: Engine Plenum

[Scott Derrick]

Ron,

So you put a kind of "foot" on the plenum so the sharp edge wasn't 
riding on the case?

How did you hold the plenum down?

thanks,

Scott

Ron Brown wrote:

> Scott,
>
> I did use the factory plenums but I taped up the engine with duct tape 
> where the plenums meet the engine case.  Then I laid up two bid from 
> the plenum onto the tape to make a tight fitting seal - but did not 
> use any silicone. I think the silicone gets used when folks are having 
> cooling problems and have to get an airtight seal.
>
> My IO360 runs very cool with the set up I have.
>
> Ronnie
>
>
>
> ----- Original Message ----- From: "Scott Derrick" <scott at tnstaafl.net>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Monday, August 29, 2005 5:09 PM
> Subject: Re: REFLECTOR: Engine Plenum
>
>
>> Its hard to believe that nobody here has built their plenum with an 
>> improvement over the method shown in the manual?
>>
>>
>> Scott Derrick wrote:
>>
>>> I was fitting the plenum on my TSIO520 today,  cutting and filing to 
>>> get it as low as possible to allow room for a partially modified 
>>> upper standard cowling.   After I shortened the upper deck manifold 
>>> and rerouted some of the injection lines I got it as low as 
>>> practicable.
>>>
>>> Now I would like to make the edges that contact the engine more 
>>> "rubbing" friendly with some kind of silicone edging, it would be 
>>> nice to have something that slipped over the edge like door seal 
>>> stuff.  What are people using?  I know I can cut Silicone baffle 
>>> strips and glue and rivet but I thought there might be something a 
>>> bit more cool looking.
>>>
>>> I looked on the Velocity site and the gallery and the only thing I 
>>> saw was siliconing(as in gluing) the edges to the engine(YUCK).
>>>
>>> Also how are people attaching the firewall, runner to plenum 
>>> assembly. The manual has a direct connection which has no slip joint 
>>> to accommodate the engine moving around.
>>> Also regarding the runners to the firewall, the manual has us using 
>>> the cowl screws to hold the runner to the firewall. I'm still toying 
>>> with the idea of a groove for the cowl to slip into and doing away 
>>> with all those screws.   Any other suggestions?
>>>
>>> I searched my email archives and came up with nada on "plenum" in 
>>> the subject line.
>>>
>>> Pictures are of course are greatly appreciated.
>>>
>>> Scott
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>
>
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>