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vent frame and door glass alignment

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rocannon Avatar
rocannon Gold Member rocannon L
Comanche County, OK, USA   USA
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1967 MG MGB GT "GT From Hell"
See attached pic.

I noticed the vent frame and the door glass are not in alignment from front to rear. Is this normal?



Pogo is right.
—————————————————————-
The power of reasons is an illusion. The belief will not change when the reasons are defeated. The causality is reversed. People believe the reasons because they believe in the conclusion.


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Benny Avatar
Benny Ben E
San Diego, CA, USA   USA
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It's common, but it's not good. This is one if the major contributors to the crack of doom.

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73emgee Avatar
73emgee Silver Member Bob Edwards
Purcellville, VA, USA   USA
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1973 MG MGB
I have this same problem. What adjustments are available? I'm planning on replacing all the window/vent seals, and cowl to windshield seal this Winter.

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lifecycles Avatar
lifecycles Dale L.
Mendenhall, MS, USA   USA
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What did you do? Has it always looked that way, or did you replace something and now it's out of alignment?
Oh and by the way,you're Quote: The Difference between Stupidity and Genius is from Albert Einstein

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rocannon Avatar
rocannon Gold Member rocannon L
Comanche County, OK, USA   USA
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1967 MG MGB GT "GT From Hell"
Always looked that way since I got the car.

As for the quote, it's most commonly attributed to Einstein but a quick search of the internet shows the actual origin is unclear.winking smiley



Pogo is right.
—————————————————————-
The power of reasons is an illusion. The belief will not change when the reasons are defeated. The causality is reversed. People believe the reasons because they believe in the conclusion.

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lawmann Avatar
lawmann Gold Member Shaun Johnson
Kathleen, GA, USA   USA
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1972 MG MGB MkIII "Old Blue"
Mine are the same way. I think the PO changed the seals long before I got the car and that is how he left it. I plan to correct it, one of a few tweaks I intend to make to the car.



Shaun Johnson
1972 MGB Tourer, Second Owner

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ErnieY Avatar
ErnieY Ernie Y
Albatera, Alicante, Spain   ESP
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You can see by the way the seal against the screen is full compressed that it's putting far too much pressure on it and that, as Ben E say, is the prime cause of the COD.

Does the frame move when you close the door or is it like that even with it open ?

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riley1489 Avatar
riley1489 Gold Member Bruce H
Great White North, QC, Canada   CAN
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1953 Jaguar XK120
1959 Riley 1.5 "King George"
1973 MG MGB
Frank,
Some of that can be adjusted out. Be prepared for frustration. Many fasteners to loosen & tighten in a sequence yet to be determined. smiling smiley

Start by loosening the barrel nuts and the 2 front vent bolts. Play with the front window rail track adjustment at the bottom inside door cavity, then snug the top barrel nuts. Ensure the thick plates/washers are used on the barrel nuts. Finally tighten the 2 front vent bolts. In my experience this will need doing at least twice. winking smiley
You will most likely then require to align the rear window channel for ease of window up/down.

Bruce



Life's most persistent and urgent question is, "What are you doing for others?"

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rocannon Avatar
rocannon Gold Member rocannon L
Comanche County, OK, USA   USA
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1967 MG MGB GT "GT From Hell"
Bruce,
I've been fiddling with them and resolved most of the alignment issue. The door sheet metal will have to be "massaged" just a bit at the rear barrel nut... the sheet metal is preventing the vent frame from moving out the little bit needed to get good alignment with the door glass. I'll have to drill out two rivets holding the frame's bottom mounting tab before I can completely remove the frame.

While I'm there I'll be making the COD repair.eye rolling smiley



In reply to # 2800835 by riley1489 Frank,
Some of that can be adjusted out. Be prepared for frustration. Many fasteners to loosen & tighten in a sequence yet to be determined. smiling smiley

Start by loosening the barrel nuts and the 2 front vent bolts. Play with the front window rail track adjustment at the bottom inside door cavity, then snug the top barrel nuts. Ensure the thick plates/washers are used on the barrel nuts. Finally tighten the 2 front vent bolts. In my experience this will need doing at least twice. winking smiley
You will most likely then require to align the rear window channel for ease of window up/down.

Bruce



Pogo is right.
—————————————————————-
The power of reasons is an illusion. The belief will not change when the reasons are defeated. The causality is reversed. People believe the reasons because they believe in the conclusion.

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ErnieY Avatar
ErnieY Ernie Y
Albatera, Alicante, Spain   ESP
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Before playing with the window I'd try slackening off the windscreen bolts and the centre support and see if you can get the gap you need that way.

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MG David David Witham
Warwick, UK   GBR
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While you are at it look at the top edge of the drop glass. It should be horizontal but you see a lot of cars where it slopes down towards the rear. Mine is one of them.

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riley1489 Avatar
riley1489 Gold Member Bruce H
Great White North, QC, Canada   CAN
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1953 Jaguar XK120
1959 Riley 1.5 "King George"
1973 MG MGB
In reply to # 2801023 by ErnieY Before playing with the window I'd try slackening off the windscreen bolts and the centre support and see if you can get the gap you need that way.

Frank,
In my case the misalignment was exacerbated after performing the repair for the COD. Once again patience is the tool of choice. smiling smiley

Ernie,
We are discussing the for/aft aesthetic alignment of the main window glass vs the vent window frame. The windshield frame has no influence on this alignment.

Bruce



Life's most persistent and urgent question is, "What are you doing for others?"

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ErnieY Avatar
ErnieY Ernie Y
Albatera, Alicante, Spain   ESP
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I was, and am, talking about the op's photo which clearly shows that the 1/4 light frame is too tight against the screen pillar.

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rocannon Avatar
rocannon Gold Member rocannon L
Comanche County, OK, USA   USA
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1967 MG MGB GT "GT From Hell"
As I've fiddled with the vent window frame, it's clear to me that the windshield frame is too far back (aft, as some are wont to say). As Ernie observed, the seal twixt the vent frame and windshield is overly compressed. The vent frame is as far back on the door as it will go, so the windshield must move.

However, to avoid mission creep grinning smiley I'm leaving the vent windows for now and getting back to preparing for installation of the new interior kit. For example: it's amazing how many holes/cracks/crevasses there are in the bulkhead between the trunk/boot and the cockpit. eye popping smiley



Pogo is right.
—————————————————————-
The power of reasons is an illusion. The belief will not change when the reasons are defeated. The causality is reversed. People believe the reasons because they believe in the conclusion.

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ErnieY Avatar
ErnieY Ernie Y
Albatera, Alicante, Spain   ESP
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When you do get around to it this is how I gauge if the window/screen relationship is correct.


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