Author Topic: Help with vent window  (Read 1410 times)

Offline Mazz77c10

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Help with vent window
« on: December 01, 2023, 09:15:53 AM »
I bought my son a 77 bonanza and we are slowly working on a few things. First up was driver side door.  I bought everything to replace the vent window and door glass and when I went to change the vent window I learned I actually have a 81-87 vent window assembly (I think).

The glass is thinner, the vent glass is 15 3/4Ē tall. The door glass for the 77 was a direct match and fit.

My question is: does the vent window division bar change for the 77 to 81? I ask because the frame I bought had a tab above the spring
and there was no way I couldíve put it into the assembly even if the glass fit.

I canít seem to find a 77 division bar or vent window assembly anywhere online anyway.  I may just buy the 81-87 to get it closed up for now.  Do I need the 1 pc weather strip or the 2?




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Offline JohnnyPopper

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Re: Help with vent window
« Reply #1 on: December 01, 2023, 02:03:11 PM »
IIRC they are incompatible. Are kits for '77 not available?
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline Mazz77c10

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Re: Help with vent window
« Reply #2 on: December 01, 2023, 02:15:40 PM »
IIRC they are incompatible. Are kits for '77 not available?
I can find the frame, but canít seem to find the division bar or other parts of the assembly that attach to the truck.

I might have to do some junkyard hunting for it.


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Offline JohnnyPopper

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Re: Help with vent window
« Reply #3 on: December 01, 2023, 04:28:08 PM »
Call my buddy Andy at A&B truck dismantler in San Diego on Commercial St.

Tell him John Michael referred you.

1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline Mazz77c10

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Re: Help with vent window
« Reply #4 on: December 01, 2023, 04:39:58 PM »
I will give him a call! Thank you!


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Offline Captkaos

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Re: Help with vent window
« Reply #5 on: December 04, 2023, 08:44:13 AM »
Division bar is the same, the weatherstripping is different for thicker vs thinner glass.

Bunch of complied info for the door components here: http://forum.73-87chevytrucks.com/smforum/index.php?topic=14625.0

Offline Mazz77c10

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Re: Help with vent window
« Reply #6 on: December 04, 2023, 09:17:06 AM »
This is great. Thanks CaptKaos!


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Offline Mazz77c10

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Re: Help with vent window
« Reply #7 on: December 06, 2023, 05:32:41 PM »
Division bar is the same, the weatherstripping is different for thicker vs thinner glass.

Bunch of complied info for the door components here: http://forum.73-87chevytrucks.com/smforum/index.php?topic=14625.0
Can you help me out? I have new weatherstripping coming, but with looking at the old, Iím struggling to see where the tab above the spring goes.

Does it go below the weatherstripping? If so, how do you feed the post through the rubber?






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Offline Mazz77c10

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Re: Help with vent window
« Reply #8 on: December 06, 2023, 05:47:12 PM »
Nevermind. I see that itís a washer. 

Thanks again for the help!


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Offline Captkaos

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Re: Help with vent window
« Reply #9 on: December 06, 2023, 06:03:24 PM »
Sorry for the delayed response but as you have found, when you pull the vent frame apart it will just be a shaft from the bottom.

BTW, This site/forum not only provides good informaton, we also sell these parts.  I would appreciate the purchase since most dont give the required information to properly choose the parts.