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Discussion Starter #1
Hi guys, I just rebuilt my Holley 1860 and had some problems as per different thread, with the floats. Well I got the floats figured out(Thanks to all who helped) but now am curious to what I used from the rebuild kit from Holley,as the secondary plate. From other readings on the web about this carb, some say there is a thin steel plate between the gaskets on the secondary. There wasnt one on my carb when I tore it down. In the Holley rebuild kit ,there is no metal plate, but there is a piece that looks like the one to the left, in the pic in this link.http://www.summitracing.com/parts/HLY-134-21/?image=large
To me it looks like a gasket , but the kit has the gasket which looks like this,
http://www.summitracing.com/parts/HLY-108-13-2/?image=large
My question. Is that tan(non metal) piece replace the thin metal original? I tried looking for that thin metal one at Summit , Jegs, among others, and cant find it anywhere as a replacement part. Like I said, I used that piece in the carb ,and the car runs. I still have to tune, but am still curious about that thin metal plate, Thanks
Here is what the order of assembly should look like:http://bob2000.com/secmb.jpg
 

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The thin metal plate was eliminated later in the carbs.

The purpose was the original cast main body's were cast to use jet plates with power valves. When they came up with the eliminator plate they used the thin metal plate for a seating surface.

If the back side of main body is flat with only small holes the thin plate is not needed.

Al
 

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the metal plate is on the right... the gasket is on the left....

the gasket is sandwiched between the plate on the right and the main body..

the thin metal plate is often referred to as a metering plate...
 

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Thanks guys! Al , the back is flat. I did assemble it using that tan one thinking it was some replacement of the thin metal one , then used the black gasket.http://bob2000.com/secmb.jpg like this set up, SO,I guess I got 2 gaskets on there??:eek: Will that cause a problem? Should I take that black one out? The car does run, and idles fine without any tuning yet. I didnt drive it though, if that matters. When I put it together, I couldnt understand why the two were to be in there back to back. Didnt make sense to me,then.
 

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Thanks guys! Al , the back is flat. I did assemble it using that tan one thinking it was some replacement of the thin metal one , then used the black gasket.http://bob2000.com/secmb.jpg like this set up, SO,I guess I got 2 gaskets on there??:eek: Will that cause a problem? Should I take that black one out? The car does run, and idles fine without any tuning yet. I didnt drive it though, if that matters. When I put it together, I couldnt understand why the two were to be in there back to back. Didnt make sense to me,then.

The brown gasket, same size as the metering plate is only used when you have the thin metal plate.

AL
 

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Discussion Starter #6
The brown gasket, same size as the metering plate is only used when you have the thin metal plate.

AL
OK Al, so its main body,blue bowl gasket, BLACK gasket, then metering plate? Right? Yank the brown one?. Its just that what Veno shows above, is that the metering plate comes with the brown gasket, not both, to give you the option if you did indeed have the thin plate. This gasket set from Summit,http://www.summitracing.com/parts/HLY-108-201/?image=large shows the brown gasket used with the secondary bowl gasket that has no large hole like the primary gasket.?
 
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