Hazdaz

New '64 Riviera owner with water in trunk.

Recommended Posts

Hazdaz    0

Hey guys, I've only had my '64 for a few weeks and I love it, but I have a few issues I'm trying to solve.  One of them is that I am getting water in the trunk and I'm not quite sure how it's getting in there.  

 

We had a rain storm yesterday and before it started, I threw a bunch of newspaper in there so I could narrow down where the water might be coming from.  I had pretty much the entire perimeter covered with newsprint.  Was thinking maybe the seal around the trunk lid.  Maybe from the rear glass area.  After the storm, I popped the trunk and none of the newsprint were wet, but I still had some water on the bottom of the trunk.  

 

Now I'm kind of at a loss as to where it might be coming from because I was really expecting to see at least some of these newsprint to be wet.  Is there a "known" place that these cars leak from?  Any past experience?  I'd love to hear some suggestions.

 

Thanks for reading.

Share this post


Link to post
Share on other sites
telriv    44

The seal around the trunk is more than likely your culprit. The trim below the rear window is one. The trim piece above the rear fender needs to be re-sealed, but usually that lets water in under the rear seat. Remove & re-seal. Very common is the window channel is rotted.

Share this post


Link to post
Share on other sites
Pat Curran    55

Most leak from the rear window over time.  It is common for rust to form under the stainless molding, particularly in both corners.  Another source is the ribbed decorative molding that fits between the rear window and the trunk lid.  The sealer around the mounting studs can dry out and begin to leak.  The trunk weather strip can be a source as well.  

Share this post


Link to post
Share on other sites
Seafoam65    157

             The proper way to diagnose trunk leaks is to climb in the trunk with a flashlight and have someone shut the lid and run

water on the back window, all along the edge of the trunk lid and along the sides of the roof where the quarter panel moldings are and watch and see

where the water is coming in. I will make this observation.........if you plan on letting your Riviera sit out in the rain all the time, you are in for a lot of grief.

It needs to be in a garage and driven on nice days or you are going to be battling rust around the rear window non stop. My Dad's 65 Riviera was very very rarely driven in the rain and sat in the garage all the time and the back window channel rusted out in 1970, getting water in the trunk and ruining the rear package tray. The back window channel on these cars was a horrible design flaw. 

Share this post


Link to post
Share on other sites
NCRiviera    67

I have a '69 Chevrolet Caprice that had the same issues. It was discovered that the lower back window channel had been previously bondo'd to fill in metal rot in those areas. The bondo had deteriated under the window trim and was allowing water to leak in the trunk in the lower corners of the channel. I had to get a new channel hand fabricated because no one reproduces the panel between the upper trunk opening and lower window channel for B Body GM vehicles, especially the 4 door hard tops.

 

After the rusted out areas were repaired, the leakage issue was resolved.

 

I don't have a garage to park my vehicles in so I use the best waterproof car covers available from CarCovers.com. For about $180 you get a fully water proof car cover that has a very soft underside lining.

Share this post


Link to post
Share on other sites
jsgun    29

I'm having the same issue, even after replacing the trunk seal. I'm concerned that my issue is the rear window. I have bad rust at the top of the windshield, I suspect the rear is the same. Not looking forward to pulling that trim off.

Share this post


Link to post
Share on other sites

I just finished a re and re on my rear window. I installed new clips and screws  (The ledge that window fits had already been repaired )I found one more leak during a flood test that turned out to be a small leak through the screw threads on one fastener.I couldn`t access  the screw as it was between the glass and the ledge. I marked the screw location on the glass with a grease pencil,and cut an access hole below the window on the inside on the package tray lip on the top below the window.I was able to seal the screw with Sika - Flex Marine sealant, no more leak.replaced a disc to fill the access hole that will be behind the package tray. I would suggest sealing the backside of all molding that you can access .water can seep in the smallest places.

  

Share this post


Link to post
Share on other sites
RivNut    953

Water not only seeps, it gathers.  The angle of the window channel sits so that water will stand in the channel.  When you wash your car be sure to use compressed air to blow the channel dry.  Water will also wick its way into the trunk floor causing it to rust.  The body mount under the trunk is shaped like a cup.  It will, after time, gather dirt in the cup and the dirt will hold water.  After some time, the trunk floor will begin to rust above those cups.  Just remember that rust never sleeps.

Share this post


Link to post
Share on other sites
powerage    11

Just doing rust repairs on my 63 rear screen area. Scott  - can you recommend the screws and clips you used?

thanks

Matt

Share this post


Link to post
Share on other sites
4 hours ago, powerage said:

Just doing rust repairs on my 63 rear screen area. Scott  - can you recommend the screws and clips you used?

thanks

Matt

 CARS old buick parts has them but I got mine from a local auto supply, they are a standard GM clip used on many cars for many years.

Share this post


Link to post
Share on other sites
8 hours ago, RivNut said:

Water not only seeps, it gathers.  The angle of the window channel sits so that water will stand in the channel.  When you wash your car be sure to use compressed air to blow the channel dry.  Water will also wick its way into the trunk floor causing it to rust.  The body mount under the trunk is shaped like a cup.  It will, after time, gather dirt in the cup and the dirt will hold water.  After some time, the trunk floor will begin to rust above those cups.  Just remember that rust never sleeps.

https://www.google.ca/search?biw=911&bih=441&tbm=isch&q=rust+never+sleeps+poster&sa=X&ved=0ahUKEwjdhJ2li6fVAhVhiVQKHeRlDb0QhyYIJg#imgdii=v8qz0SvqepZcZM:&imgrc=PXotzsRD-uIvFM: Turns out `ol Neil Young was right on the money,I had to replace my trunk floor because of those rusted cups. That`s a good tip Ed, I will now blow down that area after I wash my car, Thanks !

 

Share this post


Link to post
Share on other sites
Seafoam65    157

                           I never wash my old cars........I dust them off with a duster after every use or wipe them down with a damp microtowel if needed,

but I would never run a water hose on any of them. My Riviera has had this treatment since 1967......thus no rust ever. And of course I don't drive them in the rain or let them sit out in the rain. That's what late model Beaters are for!

  • Like 1

Share this post


Link to post
Share on other sites
riv2x4    11

Last time my 64 was wet war coming home after 2003 BCA meet in Flint.  Got caught in a downpour.  Keep it covered, use a duster too.

Share this post


Link to post
Share on other sites
60FlatTop    1,894
On 7/25/2017 at 8:54 AM, Seafoam65 said:

The proper way to diagnose trunk leaks is to climb in the trunk with a flashlight and have someone shut the lid and run

 

I think that is about as far as any of my short attention span friends would get on the instructions.

  • Haha 1

Share this post


Link to post
Share on other sites
Hazdaz    0

A few people have suggested I climb into the trunk, and it was something I was considering as well, but I wonder if I can take one of the rear seats out instead and peek Into the trunk instead.  I haven't looked into it yet, but does anyone know how easy is it to take the rear seats out, and if that would open up a window into the trunk.

 

BTW, I appreciate the suggestions you guys have made.  I've been working on other issues with the car so far, but if this weekend cooperates, I'd like to investigate the trunk issue further then.

Share this post


Link to post
Share on other sites
Seafoam65    157
3 hours ago, Hazdaz said:

A few people have suggested I climb into the trunk, and it was something I was considering as well, but I wonder if I can take one of the rear seats out instead and peek Into the trunk instead.  I haven't looked into it yet, but does anyone know how easy is it to take the rear seats out, and if that would open up a window into the trunk.

 

BTW, I appreciate the suggestions you guys have made.  I've been working on other issues with the car so far, but if this weekend cooperates, I'd like to investigate the trunk issue further then.

                You are suggesting exchanging a five minute job for a job taking 20 times as long. Could it be that you are afraid the wife will close the trunk lid on you and leave it closed? I had a wife like that once!

  • Haha 1

Share this post


Link to post
Share on other sites
60FlatTop    1,894

"My lawyer got me 30X what the insurance company offered when my remote batteries failed." Call 666-66-66, Darwin, Styx. & Stone your reprehensible legal team.

tumblr_inline_nvw4p4VWhC1sze1uh_1280.jpg

Share this post


Link to post
Share on other sites
RivNut    953

Reminds me of friends and trunks.  Lock your wife and your dog in the trunk of your car. Wait an hour and let them out.  See who's most glad to see you.

  • Like 1
  • Haha 1

Share this post


Link to post
Share on other sites
Hazdaz    0

Seafoam65- well I actually have been considering doing what the person above you has done with the dynamat  material, so it was kind of kill two birds with one stone type of deal.  

 

Also, as big as the trunk is, I just don't think I could fit in it what with the hump over the rear axle and all.  And the GF loves the car, so not too worried about getting locked in by her.  

Share this post


Link to post
Share on other sites
Seafoam65    157

                    I'm a big guy and i climb in trunks quite often to find water leaks at my shop on cars with much smaller trunks than 

your Riviera. Just climb in .....takes three minutes.......Git R Done as Larry the Cable Guy would say.

Share this post


Link to post
Share on other sites
DualQuadDave    14

Riv's can leak also from the b-pillar chrome spears, especially if the car had been painted. From factory, they have 3 square holes that had clips with mastic sealer in them.  The 4th hole had a stud with a nut, also with sealer. 99% of even restored Riv's do not put the clips back, much less seal up the holes.  It will leak there under medium to heavy water soak. Back window is usually way worse, though.

Share this post


Link to post
Share on other sites
Hazdaz    0
Quote
On 7/30/2017 at 0:09 AM, DualQuadDave said:

Riv's can leak also from the b-pillar chrome spears, especially if the car had been painted. From factory, they have 3 square holes that had clips with mastic sealer in them.  The 4th hole had a stud with a nut, also with sealer. 99% of even restored Riv's do not put the clips back, much less seal up the holes.  It will leak there under medium to heavy water soak. Back window is usually way worse, though.

I'm trying to visualize where you are talking about?  I assume this is at the base where it meets the rear fender?  My cars is fairly well de-chromed.  Can I access or at least examine this from the trunk or backseat?

 

Share this post


Link to post
Share on other sites

My leak was found by having a man much smaller and younger climb in the trunk with a good flashlight while I sprayed a water hose on the trunk.

The water was coming in around the tail lights! The prior owners neglected to put in the tail light gasket mounts. I bought a pair and the leak stopped.

Edited by Red Riviera Bob
a stab at humor- the man in the closed trunk needed a flashlight (see edit history)
  • Like 1

Share this post


Link to post
Share on other sites

Yes Sir, the tail light mounting rubber gasket is hidden between the tail light bracket ( the bracket holds the entire red lenses and bulb socket box assembly ) and the back of the car. When the stock tail light assembly is tightened up from INSIDE THE TRUNK the gasket goes out of sight. You might try taking a spray bottle full of water and spraying the taillight area with the trunk open and see if it leaks. I did not easily see where the leak was coming from until my man climbed in the trunk with theflashlight and I puta hose on the car.

i can send some pics if you think it will help you.

Red Riviera Bob

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now