From dave at ranteer.com  Mon Sep  8 11:24:22 2025
From: dave at ranteer.com (dave northrup)
Date: Mon, 8 Sep 2025 17:24:22 +0000
Subject: [Mgs] How to block this orifice
Message-ID: <5ee6a03ba5674cd9b6258824d6a5322c@ranteer.com>

Early 5 main mgb engine, happens to be in an mga.   How do i plug this orifice?  I had something sealing it,  but apparently that was not a permanent solution
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From LRC at red4est.com  Mon Sep  8 11:53:29 2025
From: LRC at red4est.com (Larry Colen)
Date: Mon, 08 Sep 2025 10:53:29 -0700
Subject: [Mgs] How to block this orifice
In-Reply-To: <5ee6a03ba5674cd9b6258824d6a5322c@ranteer.com>
References: <5ee6a03ba5674cd9b6258824d6a5322c@ranteer.com>
Message-ID: <fdbe72011b8fa26288d53e2a03a716b9@red4est.com>

Isn't that crankcase ventilation?

On 2025-09-08 10:24, dave northrup wrote:
> Early 5 main mgb engine, happens to be in an mga.   How do i plug this
> orifice?  I had something sealing it,  but apparently that was not a
> permanent solution
> _______________________________________________
> 
> Mgs at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.75
> 
> Archive: http://www.team.net/pipermail/mgs 
> http://autox.team.net/archive
> 
> Unsubscribe: http://autox.team.net/mailman/options/mgs/lrc at red4est.com

-- 
Larry Colen  LRC at red4est.com http://red4est.com/lrc

From dave at ranteer.com  Mon Sep  8 12:28:46 2025
From: dave at ranteer.com (dave northrup)
Date: Mon, 8 Sep 2025 18:28:46 +0000
Subject: [Mgs] How to block this orifice
In-Reply-To: <fdbe72011b8fa26288d53e2a03a716b9@red4est.com>
References: <5ee6a03ba5674cd9b6258824d6a5322c@ranteer.com>
 <fdbe72011b8fa26288d53e2a03a716b9@red4est.com>
Message-ID: <f44a4fbd6d29477fba471953b1e99be8@ranteer.com>

This engine, once upon a time, had a weber.  The manifolds and carburettors have been switched out.  This manifold came from a later, pollution equipped car.  Bad choice on my part but at the time I didn't know better

As you can see, there is crank case ventilation going on.  

I need to stop this hole.  The bolt in the hose will work for now but I need a prettier permanent solution.    

-----Original Message-----
From: Larry Colen <LRC at red4est.com> 
Sent: Monday, September 8, 2025 12:53 PM
To: dave northrup <dave at ranteer.com>
Cc: mgs at autox.team.net
Subject: Re: [Mgs] How to block this orifice

Isn't that crankcase ventilation?

On 2025-09-08 10:24, dave northrup wrote:
> Early 5 main mgb engine, happens to be in an mga.   How do i plug this
> orifice?  I had something sealing it,  but apparently that was not a 
> permanent solution _______________________________________________
> 
> Mgs at autox.team.net
> Donate: http://www.team.net/donate.html Suggested annual donation  
> $12.75
> 
> Archive: http://www.team.net/pipermail/mgs 
> http://autox.team.net/archive
> 
> Unsubscribe: http://autox.team.net/mailman/options/mgs/lrc at red4est.com

--
Larry Colen  LRC at red4est.com http://red4est.com/lrc
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From allen.k.hess at gmail.com  Mon Sep  8 14:49:02 2025
From: allen.k.hess at gmail.com (Allen Hess)
Date: Mon, 8 Sep 2025 16:49:02 -0400
Subject: [Mgs] How to block this orifice
Message-ID: <02E46B8B-A5E5-4D5E-9A88-6F82F6A64E88@gmail.com>

You might look into an oil pan drain plug repair, such as a rubber plug that expands internally. https://www.autozone.com/external-engine/oil-drain-plug/p/eco-plug-12mm-to-16mm-aluminum-oil-drain-plug/1059188_0_0?spps.s=4632&cmpid=LIA:US:EN:AD:NL:1000000:GEN:22350391884&gclsrc=aw.ds&gad_source=1&gad_campaignid=22356757832&gbraid=0AAAAADkcoVsQcUyNIBi9CLCRwizSZP4L6
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From mvheim at sonic.net  Mon Sep  8 15:15:06 2025
From: mvheim at sonic.net (Max Heim)
Date: Mon, 8 Sep 2025 14:15:06 -0700
Subject: [Mgs] How to block this orifice
In-Reply-To: <02E46B8B-A5E5-4D5E-9A88-6F82F6A64E88@gmail.com>
References: <02E46B8B-A5E5-4D5E-9A88-6F82F6A64E88@gmail.com>
Message-ID: <64A82A3D-DC20-4578-81D2-D706C0968CCB@sonic.net>

Ah, that?s a good idea...
--
Max Heim
'66 MGB

> On Sep 8, 2025, at 1:49?PM, Allen Hess <allen.k.hess at gmail.com> wrote:
> 
> You might look into an oil pan drain plug repair, such as a rubber plug that expands internally. https://www.autozone.com/external-engine/oil-drain-plug/p/eco-plug-12mm-to-16mm-aluminum-oil-drain-plug/1059188_0_0?spps.s=4632&cmpid=LIA:US:EN:AD:NL:1000000:GEN:22350391884&gclsrc=aw.ds&gad_source=1&gad_campaignid=22356757832&gbraid=0AAAAADkcoVsQcUyNIBi9CLCRwizSZP4L6
> _______________________________________________
> 
> Mgs at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.75
> 
> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
> 
> Unsubscribe: http://autox.team.net/mailman/options/mgs/mvheim at sonic.net

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From cjattias at gmail.com  Mon Sep  8 15:28:21 2025
From: cjattias at gmail.com (Chris Attias)
Date: Mon, 8 Sep 2025 14:28:21 -0700
Subject: [Mgs] How to block this orifice
In-Reply-To: <f44a4fbd6d29477fba471953b1e99be8@ranteer.com>
References: <5ee6a03ba5674cd9b6258824d6a5322c@ranteer.com>
 <fdbe72011b8fa26288d53e2a03a716b9@red4est.com>
 <f44a4fbd6d29477fba471953b1e99be8@ranteer.com>
Message-ID: <CAFpMPMXkA77VJVfvnH9-bMTAYLi6UqRr+F1i=X7zA0roL9yG-g@mail.gmail.com>

What are the O.D.s of the flare of the fitting and the next bit? Dorman
sells rubber caps (5/8", 3/4", maybe others), and might have one that could
be slipped over the end and secured with a hose clamp. I found a few at
Summit Racing, sold as cooling bypass caps.

Plan B might be to cut off the flared bit and find a cap that fits that
part tightly.

Plan C would be cutting the fitting at the manifold, threading the hole,
and using a tapered plumbing plug.

Chris
'64 MGB

On Mon, Sep 8, 2025 at 12:50?PM dave northrup <dave at ranteer.com> wrote:

> This engine, once upon a time, had a weber.  The manifolds and
> carburettors have been switched out.  This manifold came from a later,
> pollution equipped car.  Bad choice on my part but at the time I didn't
> know better
>
> As you can see, there is crank case ventilation going on.
>
> I need to stop this hole.  The bolt in the hose will work for now but I
> need a prettier permanent solution.
>
> -----Original Message-----
> From: Larry Colen <LRC at red4est.com>
> Sent: Monday, September 8, 2025 12:53 PM
> To: dave northrup <dave at ranteer.com>
> Cc: mgs at autox.team.net
> Subject: Re: [Mgs] How to block this orifice
>
> Isn't that crankcase ventilation?
>
> On 2025-09-08 10:24, dave northrup wrote:
> > Early 5 main mgb engine, happens to be in an mga.   How do i plug this
> > orifice?  I had something sealing it,  but apparently that was not a
> > permanent solution _______________________________________________
> >
> > Mgs at autox.team.net
> > Donate: http://www.team.net/donate.html Suggested annual donation
> > $12.75
> >
> > Archive: http://www.team.net/pipermail/mgs
> > http://autox.team.net/archive
> >
> > Unsubscribe: http://autox.team.net/mailman/options/mgs/lrc at red4est.com
>
> --
> Larry Colen  LRC at red4est.com http://red4est.com/lrc
> _______________________________________________
>
> Mgs at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.75
>
> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>
> Unsubscribe: http://autox.team.net/mailman/options/mgs/cjattias at gmail.com
>
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From frank.r.edwards51 at gmail.com  Mon Sep  8 16:00:45 2025
From: frank.r.edwards51 at gmail.com (Frank Edwards)
Date: Mon, 8 Sep 2025 18:00:45 -0400
Subject: [Mgs] How to block this orifice
In-Reply-To: <64A82A3D-DC20-4578-81D2-D706C0968CCB@sonic.net>
References: <02E46B8B-A5E5-4D5E-9A88-6F82F6A64E88@gmail.com>
 <64A82A3D-DC20-4578-81D2-D706C0968CCB@sonic.net>
Message-ID: <CA+Fxm7Qdi3EZPXVh4ggN+RDnLEyTi8bt6p8b1ASfqpqWqZLjBA@mail.gmail.com>

That elbow is just pressed in.   Can be twisted out.   Take it out and tap
the hole.   I'd use a BSPP tap.  A BSPP plug which takes a copper washer
can be used to make a professional looking job.   If the manifold is on the
engine fill the tap with grease to catch the chips.
 More work, nice looking fix.
Frank



On Mon, Sep 8, 2025, 5:31?PM Max Heim <mvheim at sonic.net> wrote:

> Ah, that?s a good idea...
> --
> Max Heim
> '66 MGB
>
> On Sep 8, 2025, at 1:49?PM, Allen Hess <allen.k.hess at gmail.com> wrote:
>
> You might look into an oil pan drain plug repair, such as a rubber plug
> that expands internally.
> https://www.autozone.com/external-engine/oil-drain-plug/p/eco-plug-12mm-to-16mm-aluminum-oil-drain-plug/1059188_0_0?spps.s=4632&cmpid=LIA:US:EN:AD:NL:1000000:GEN:22350391884&gclsrc=aw.ds&gad_source=1&gad_campaignid=22356757832&gbraid=0AAAAADkcoVsQcUyNIBi9CLCRwizSZP4L6
> _______________________________________________
>
> Mgs at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.75
>
> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>
> Unsubscribe: http://autox.team.net/mailman/options/mgs/mvheim at sonic.net
>
>
> _______________________________________________
>
> Mgs at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.75
>
> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>
> Unsubscribe:
> http://autox.team.net/mailman/options/mgs/frank.r.edwards51 at gmail.com
>
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From dave at ranteer.com  Tue Sep  9 17:19:50 2025
From: dave at ranteer.com (dave northrup)
Date: Tue, 9 Sep 2025 23:19:50 +0000
Subject: [Mgs] How to block this orifice
In-Reply-To: <CA+Fxm7Qdi3EZPXVh4ggN+RDnLEyTi8bt6p8b1ASfqpqWqZLjBA@mail.gmail.com>
References: <02E46B8B-A5E5-4D5E-9A88-6F82F6A64E88@gmail.com>
 <64A82A3D-DC20-4578-81D2-D706C0968CCB@sonic.net>
 <CA+Fxm7Qdi3EZPXVh4ggN+RDnLEyTi8bt6p8b1ASfqpqWqZLjBA@mail.gmail.com>
Message-ID: <c69a94cbb98e4253a28acf4a14fbb5c1@ranteer.com>

Thank you so much to everyone who responded to this question.  I received many answers and lots of ideas.

Thank you again!  I?ll get ?er done this week!
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From mark at bradakis.com  Thu Sep 11 11:45:45 2025
From: mark at bradakis.com (Mark Bradakis)
Date: Thu, 11 Sep 2025 11:45:45 -0600
Subject: [Mgs] MGA Twin Cam video
Message-ID: <2a0aafa0-bbea-4212-a3a3-c5a4e53693ea@bradakis.com>

Here's a nice bit about the MGA Twin Cam.

https://www.youtube.com/watch?v=lNt31nbWy1k


mjb.