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 Post subject: Carb spacer
 Post Posted: Fri Mar 02, 2012 6:42 pm 
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The intake manifold on my 522 is an Edelbrock 454R. The 1" carb spacer for it was very nicely blended to match the intake for a smooth flow. There was no gasket between them. There was a very thin layer of sealant between the 2. I took the them apart because I thought I needed to. I want to put them back together as they were. Any suggestions what sealant will work. Must resist alcohol.

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 Post subject: Re: Carb spacer
 Post Posted: Fri Mar 02, 2012 7:22 pm 
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Why not just use a gasket???

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 Post subject: Re: Carb spacer
 Post Posted: Fri Mar 02, 2012 7:31 pm 
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RTV will work for that. It's what I used on mine. If you're running a Terminator then that area of the mainfold will likely never see any fuel anyway as fuel is injected by the nozzles down in the runners.

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 Post subject: Re: Carb spacer
 Post Posted: Fri Mar 02, 2012 8:09 pm 
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Beretta wrote:
Why not just use a gasket???

Reher and Morrison didnt use one on there originally and the 2 pieces are matched perfectly to one another. A gasket just isnt as seamless.

Ken - Good point. No alcohol up there so there shouldnt be a problem.
Thanks

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 Post subject: Re: Carb spacer
 Post Posted: Fri Mar 02, 2012 8:24 pm 
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oldtimer wrote:
Beretta wrote:
Why not just use a gasket???

Reher and Morrison didnt use one on there originally and the 2 pieces are matched perfectly to one another. A gasket just isnt as seamless.

Ken - Good point. No alcohol up there so there shouldnt be a problem.
Thanks


A gasket installed and bolted down followed by going around it with a cartridge roll will be just as seamless.


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 Post subject: Re: Carb spacer
 Post Posted: Fri Mar 02, 2012 10:23 pm 
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When Curtis port matched my funnel adapter to the intake he didn't use a gasket either. So after I hogged out the plenum on that thing last year I didn't use one and I ran it with an 1150 methanol Dominator on it. That intake only has about a qharter inch of the original 4150 flange left and it works fine that way.

I ran a sheet metal intake on my engine for almost an entire season with only RTV for intake gaskets. It did finally start leaking but it almost made an entire season before it did.

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 Post subject: Re: Carb spacer
 Post Posted: Mon Mar 05, 2012 1:29 pm 
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you guys are just useing rtv sealant between the spacer and intake, what type? I guess the run off that flows out between the 2 surfaces is just wiped off just like caulking a window?how about sealant and a gasket?

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 Post subject: Re: Carb spacer
 Post Posted: Mon Mar 05, 2012 1:30 pm 
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What about between carb and spacer.

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 Post subject: Re: Carb spacer
 Post Posted: Mon Mar 05, 2012 2:40 pm 
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JEFF69Z28 wrote:
What about between carb and spacer.

You can't get in there to wipe the excess off after bolting the carb on and the carb is more likely to be removed than a spacer making it not a good place for silicone IMO.

I always use a gasket (trimmed) under the carb and usually silicone the spacer to the intake.

Rick


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 Post subject: Re: Carb spacer
 Post Posted: Mon Mar 05, 2012 3:39 pm 
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I use that orange colored stuff that's sensor safe for O2 sensors as I've read where the fumes from silicon will hork up a sensor.

And I'm with Rick on the gasket under the carb. Not sure a carb would stick as good as the adapter to the manifold but once that RTV sets up, it's a bitch to break it loose again.

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 Post subject: Re: Carb spacer
 Post Posted: Mon Mar 05, 2012 7:21 pm 
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I use a gasket every place I can. Better chance to isolate the carb from heat!


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