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 Post subject: Main well
 Post Posted: Sat Jun 02, 2012 4:54 pm 
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Never did it before but how do you put the main well plugs in the top of the metering block?
They look like small freeze plugs so I would think the same way but wanted to ask before I
hork it up...... =;

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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 5:15 pm 
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It's not brain surgery Barry. =;

Find something the same OD and drive it in.
There's even enough room to stack 2.


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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 7:24 pm 
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Didn't think it is Scott just wanted to make sure before I wack them in there O:) ..

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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 7:26 pm 
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Lets stir the pot a little, shall we?

So do you make them flush with the top of the metering block, or do you drive them down "close" to the top of the crosswell entrance in the mainwell? ;-)

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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 7:31 pm 
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Quote:
So do you make them flush with the top of the metering block, or do you drive them down "close" to the top of the crosswell entrance in the mainwell


LOL.

How do you get them out in the 1st place?

Hysteric


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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 7:33 pm 
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hysteric wrote:
Quote:
So do you make them flush with the top of the metering block, or do you drive them down "close" to the top of the crosswell entrance in the mainwell


LOL.

How do you get them out in the 1st place?

Hysteric



There new so there was none in to begin with ;-)
Do you think they should be sealed off with some epoxy??

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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 7:41 pm 
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You can remove them with a sheetmetal screw and a claw hammer, or at least that's what I use! ;-)

Epoxy? I don't any more but "Your Mileage May Vary!" ;-)

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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 8:45 pm 
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I've drilled them out. A sharp 1/4 inch bit usually pops them suckers right out once you get to the bottom of the plug. I started doing them that way when the sheet metal screw method gave me the finger one time.


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 Post subject: Re: Main well
 Post Posted: Sat Jun 02, 2012 11:46 pm 
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Thats the same way I do it Ron. Hasn't failed me yet.

I use a punch the same OD as the plug and drive it down to just above the cross channel. I have a nice soft piece of wood I notched for the blocks to sit in when I drive the plugs in.


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 Post subject: Re: Main well
 Post Posted: Sun Jun 03, 2012 5:55 am 
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Ken0069 wrote:
Lets stir the pot a little, shall we?

So do you make them flush with the top of the metering block, or do you drive them down "close" to the top of the crosswell entrance in the mainwell? ;-)


I remember Tuner saying that he liked the Holley blocks that had the plug in the main well
down in the channel instead of the ones that were flush...Can't remember why he like those
tho :-k ..

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 Post subject: Re: Main well
 Post Posted: Sun Jun 03, 2012 6:58 am 
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Beretta wrote:
Ken0069 wrote:
Lets stir the pot a little, shall we?

So do you make them flush with the top of the metering block, or do you drive them down "close" to the top of the crosswell entrance in the mainwell? ;-)


I remember Tuner saying that he liked the Holley blocks that had the plug in the main well
down in the channel instead of the ones that were flush...Can't remember why he like those
tho :-k ..



Just above the channel location helps prevent an airgap or bubble from developing.

What blocks you got Barry?


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 Post subject: Re: Main well
 Post Posted: Sun Jun 03, 2012 7:53 am 
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BLP

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 Post subject: Re: Main well
 Post Posted: Sun Jun 03, 2012 7:56 am 
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Here's a thought.........Has anybody thought of tapping them for a threaded plug? It would make them really easy to remove if you wanted to work on them for something and easier to put in.............Or would that be a big no-no??

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 Post subject: Re: Main well
 Post Posted: Sun Jun 03, 2012 8:32 am 
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Shaker455 wrote:
Just above the channel location helps prevent an airgap or bubble from developing.


BINGO! =D>

I don't have any other scientific proof of this other than if given an opportunity, air bubbles tend to coalesce and since there's always a bubble trapped in the upper part of that mainwell when the plug is flush with the top, well, there's your opportunity to produce larger air bubbles that possibly result in "slugging", from the crosswell out out.

Back around 2002 or so I bought two brand new Holley 4150 HP 750cfm carburetors from Summit. I've run those things off and on since but back a few months ago I bought some new gaskets and power valves to basically do an overhaul on'em. During those overhauls I noticed that one set of metering blocks had the plugs down the mainwell to just above the upper crosswell exit and the other ones DID NOT! Hummm, thought I was getting two identical carbs but evidently not. Both pairs of metering blocks had the same part number stamped on'em but the two main body's had different serial numbers with the one with the recessed mainwell plugs having the higher number. So what that means is the recessed plug carb was possibly the newer of the two since there was about 5000 numbers difference from one to the other.

So that got me thinking about why this would be done, which lead me to the above conclusions.

Ennywho, ALL those metering blocks now have mainwell plugs that are seated just above the crosswell entrance.

And as usual, "Your Mileage May Vary!" ;-)

Things that make you go....................hummmmmmm!

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 Post subject: Re: Main well
 Post Posted: Sun Jun 03, 2012 8:57 am 
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Coloradoracer wrote:
Here's a thought.........Has anybody thought of tapping them for a threaded plug? It would make them really easy to remove if you wanted to work on them for something and easier to put in.............Or would that be a big no-no??


That's a thought. 1/8 NPT might be close.

Then you could tweak your threads to make it bottom at the channel.


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