Pontoon O-ring seal NLA - alternatives?

[DMC-81]

Hi there,

It looks like the pontoon foam O-Ring seal (106693) is no longer available. Mine are fairly crusty. What have you all used as a close looking alternative?

Thanks!

[sdg3205]

Great question. No idea. I haven't heard of any solutions.

IIRC, there are similar (perhaps identical) O-rings behind the rear stainless panels over the breather holes that are directly behind the rear speakers in earlier to mid build cars. If you really want, you could steal those and plug the body breather holes with old worn out dust caps. If those holes don't leak already they will at some point.

[DMC-81]

Great question. No idea. I haven't heard of any solutions.

IIRC, there are similar (perhaps identical) O-rings behind the rear stainless panels over the breather holes that are directly behind the rear speakers in earlier to mid build cars. If you really want, you could steal those and plug the body breather holes with old worn out dust caps. If those holes don't leak already they will at some point.

Hi Dave,

Correct. Here's a pic (before cleaning)..

37997

So, it's only a partial ring on my car, which wouldn't do for the pontoon ring. When you say breather holes, is the purpose of that hole ito exhaust air out of the cabin? If so what happens if you plug them?

[DMC5180]

Many cars have the holes plugged. Their are enough other holes/leaks in the cabin that it does not really effect anything i.e. Driver compartment venting.


Dennis

[David T]

Many cars have the holes plugged. Their are enough other holes/leaks in the cabin that it does not really effect anything i.e. Driver compartment venting.


Dennis

You can remove the "ring", cut it open and fill it with foam. Alternately you can get some square foam of the same size on a roll, cut it, paint it, and glue it in.

[sdg3205]

Is there any reason you want these? They don't do a whole heck of a lot :)

[DMC5180]

I suppose you could look at like. Wow, the vent louvres were supposed to be functional. Of coarse there's enough leakage between the quarter panel and pontoon that the louvre vents are just decorative elements.


Dennis

[DMC5180]

Hi Dave,

Correct. Here's a pic (before cleaning)..

37997

So, it's only a partial ring on my car, which wouldn't do for the pontoon ring. When you say breather holes, is the purpose of that hole ito exhaust air out of the cabin? If so what happens if you plug them?

Dana, what is the measured diameter of the hole?


Dennis

[Chris 16409]

I just used some foam with adhesive backing and stuck it on. It does the job. To me it did not matter if it looked original. The original stuff had deteriorated anyway.

[mluder]

When I repainted my engine bay I considered just using some foam weather stripping to fill the gap between the inlet and the flange that goes into the pontoon. Something like this... http://www.homedepot.com/p/Frost-King-E-O-3-4-in-x-7-16-in-x-10-ft-Black-High-Density-Rubber-Foam-Weatherstrip-Tape-R734H/100047977
It's mostly aesthetic any way so I never got around to doing it.

Cheers
Steven

[DMC-81]

Is there any reason you want these? They don't do a whole heck of a lot :)

Well, as Dennis mentioned, they're supposed to be functional. Plus, if I don't replace them, every time I open the engine louvre, it would bother the heck out of me. :headscratch:


Dana, what is the measured diameter of the hole?

Dennis

I'll get the exact measurements of the diameter, height, and width of these rings and report back. I can't believe that they haven't been reproduced....probably too far down on the list. I think the diameter is 2 3/4 inches but I need to verify.

Thanks all for the suggestions. I'm going to get the dimensions and do some research.

Also, for the breather holes, I'm thinking of a circular louvre fitting that would exhaust the air but would not let water in that was traveling downward, or perhaps a one way valve similar to the one that is in breathing equipment. More research....

[DMC5180]

I'm fairly sure those foam rings are made from PVC foam. That stuff just turns to dust over time. If it were me, I'd use neoprene rubber foam or polyurethane foam and cut new rings. Then install with black RTV or weather strip adhesive.
Same goes for the rear upper pontoon vents.


Dennis

[David T]

I'm fairly sure those foam rings are made from PVC foam. That stuff just turns to dust over time. If it were me, I'd use neoprene rubber foam or polyurethane foam and cut new rings. Then install with black RTV or weather strip adhesive.
Same goes for the rear upper pontoon vents.


Dennis

The dimensions are about 3/4 " square. It appears to be a plastic covering filled with foam. The foam inside turns into dust. You can buy a roll of black insulation 3/4 X 3/4 and cut it to the proper length and glue the ends together. You can hide the joint where it can't be seen. It is mainly for aesthetic reasons to hide the joint between the trim and the pontoon.

[DMC-81]

I had the panel off today, and the O-rings are 1/2" wide, 1/2" thick, and the upper intake round holes are 2 3/4" (inside diameter). The lower vent holes are slightly smaller at 2 3/8" (inside diameter).

I was thinking of cutting a foam ring like Dennis mentioned and spraying/dipping it in plasti-dip.

What you you think?

[David T]

I had the panel off today, and the O-rings are 1/2" wide, 1/2" thick, and the upper intake round holes are 2 3/4" (inside diameter). The lower vent holes are slightly smaller at 2 3/8" (inside diameter).

I was thinking of cutting a foam ring like Dennis mentioned and spraying/dipping it in plasti-dip.

What you you think?

The Plasti-Dip may be too thick. Maybe a thick coat of paint. Like a very thinned out undercoating.

[DMCMW Dave]

Try Matt K's idea of a standard toilet tank spud gasket. You will be surprised how well that works.


Sent from phone

[DMC-81]

Try Matt K's idea of a standard toilet tank spud gasket. You will be surprised how well that works.


Sent from phone

Thanks Dave. Like this?....
38208

[Josh]

off a chevy sprint. Snaps right in, free at your local wrecker.

It has more significance to my car that when originally installed... haha

http://i84.photobucket.com/albums/k38/jschatte/Facebook/Project%2082%20Delorean/1084960_684647781548738_1470557271_o.jpg (http://s84.photobucket.com/user/jschatte/media/Facebook/Project%2082%20Delorean/1084960_684647781548738_1470557271_o.jpg.html)

[DMC-81]

off a chevy sprint. Snaps right in, free at your local wrecker.

It has more significance to my car that when originally installed... haha

Cool! I called a couple wrecker yards, and they didn't have any. :frown:

However I found the gasket that Dave mentioned. I trial fitted it on both holes and it looks like it will do the job! You can't even tell the difference from the original gasket on the upper hole. I'll post pictures when I permanently install the quarter panels.

38219

[DMC-81]

So, I got the leak-prone cabin vent gasket replaced today with my own concoction that will let air out, but no water in. I used the tank to bowl rubber gasket that was recommended by Dave Swingle ( thanks Dave /Matt K!)...
38238

Old gasket removed and cleaned with Goo Gone and a razor blade. I trimmed the rectangular gasket above it, as it interfered with the top of the new gasket...
38239

Ace gasket #40198 glued, beveled side in, with Ultra Black RTV sealant. After it set up, I rimmed the gasket again with more....
38240

Finally, I cut a piece of 6 mil plastic and glued it 3/4 of the way around the face of the gasket with RTV to achieve the goal of a functioning yet water resistant vent.....
38241

Now on to the induction gasket. :wrenchin:

[DMC-81]

O.K. Here is the induction gasket install.

I cleaned and re-oriented the internal duct which fell out of place...
38260

I also cleaned the old glue off the flange, and installed it.
38261

I installed the same Ace part number 40198 ($2) beveled side up, using contact cement....
38262

Here is a view from the inside with the panel in place...
38263

Gasket problem solved! Thanks all!!

[DMC5180]

I've never dealt with that piece before. How does the inlet duct interface with the lower duct and gasket? It's hard to see in the last photo. Does it just sit on top of it or in it?


Dennis

[DMC-81]

Hi Dennis,
Here's a view from the inlet. The bevel is visible. I tried it both ways and it fit better with the bevel up because of the angle of the inlet grill. I might mark and trim the inside diameter as there seems to be extra. I need to take the panel off one more time anyway.
38264

[DMC5180]

Thanks I see it just sits over and against the donut.


Dennis

[DMC-81]

Just an update to this thread. I had to change the gasket on the pontoon air intake vents to a thinner version as the thicker one interfered with proper quarter panel to rear fascia alignment. I also oriented the new gasket with the beveled side down this time. Trial and error...

Gasket from Home Depot..

38676

Installed- Inside view...
38677

Outside view..
38678

I am happy with this one.

Here is the rear fascia all installed ( except the lights etc.)...

38679

[1batt4u]

I'm looking to do this also. Do you have a part number for that gasket?
Has anyone else done anything similar with something different better?

[DMC-81]

I'm looking to do this also. Do you have a part number for that gasket?
Has anyone else done anything similar with something different better?

Hi there,

It is an Everbuilt, model # 89170 SKU 1000055036

http://www.homedepot.com/p/Everbilt-Flush-Valve-Shank-Washer-89170/205172483

Depending on your panel fit I would suggest some black RTV on either side of the gasket to secure it in place.

[kajcienski]

I'm trying to push Rob to improve on a product I have used that he will hopefully be offering at some point that gives it a super finished look.
It is basically a gasket somewhat similar to the previous post, but I believe he has some improvement ideas - which he is a master at doing.
I am attaching a picture.
51346

[DMC5180]

Kinda curious how you install the ring. It's one of a few things I've never tackled on my car.


Sent from my iPhone using Tapatalk

[David T]

The best substitute I have been able to come up with is a roll of 3/4 square weatherstripping at Lowes. I hide the seam around the back so you can't see it. It is about the right color and you can put it in without having to take everything apart. The other possibility is to take the old seal out, cut it open, clean out the old foam and put new foam in, gluing it shut. Now how do you takeout and put the seal back without taking the car apart?

[kajcienski]

I'm trying to push Rob to improve on a product I have used that he will hopefully be offering at some point that gives it a super finished look.
It is basically a gasket somewhat similar to the previous post, but I believe he has some improvement ideas - which he is a master at doing.
I am attaching a picture.
51346

Just a side note - what I like about this particular shape and size of ring is that it totally covers the area where the original gasket went. No matter what I did to try and clean the pontoon and tube, I could not restore it to my satisfaction. So this covers it and to my eye, looks like it might as well have come from the factory (though I know the originals looked a bit different).

The install, to answer the question in previous post, is very easy.
You DO NOT have to take anything apart.
Just clean the area, carefully slice the gasket with a blade so it can be expanded and put around the tube, then use adhesive to glue to the pontoon portion so it contours right to the pontoon shape. The cut side of the gasket should face into the corner where you would never see it.
There is room for improvement in terms of texture and exact shape, but again, hoping that Rob can improve on this so the community finally has a super strong replacement for this. I have always thought this is one of the worst looking parts of the engine area once the originals deteriorate.

[jawn101]

I also used the 3/4" square foam weather stripping with the adhesive backing. You've gotta take the quarter panel off to install it.

[David T]

I also used the 3/4" square foam weather stripping with the adhesive backing. You've gotta take the quarter panel off to install it.

I disagree. I managed to do it without having to take anything apart. Removing and replacing that panel is a LOT of work just for that foam seal, unless you have other reasons to remove it. And there are TWO of them!

[jawn101]

I disagree. I managed to do it without having to take anything apart. Removing and replacing that panel is a LOT of work just for that foam seal, unless you have other reasons to remove it. And there are TWO of them!

You may be right. I think with the OEM rings you had to do it this way because they were unbroken circles. I already had my quarter panel off for other reasons and it was the perfect time to do this work. But you can probably get yourself under there if you try. There are certainly way more uncomfortable contortionist acts required for other jobs.

[BABIS]

Just an update to this thread. I had to change the gasket on the pontoon air intake vents to a thinner version as the thicker one interfered with proper quarter panel to rear fascia alignment. I also oriented the new gasket with the beveled side down this time. Trial and error...

Gasket from Home Depot..

38676

Installed- Inside view...
38677

Outside view..
38678

I am happy with this one.

Here is the rear fascia all installed ( except the lights etc.)...

38679



I'm trying to push Rob to improve on a product I have used that he will hopefully be offering at some point that gives it a super finished look.
It is basically a gasket somewhat similar to the previous post, but I believe he has some improvement ideas - which he is a master at doing.
I am attaching a picture.
51346

I tried to install the #106693 seals sold by deloreango; I thought they had to be installed like in kajcienski picture, around the air intake, but I found that the inner diameter of the seal is about 58mm and the outside diameter of the air intake is about 75mm (at least the driver side intake), so it seems that they are intended to be installed like in DMC-81 pics.
I find that the "seal pressed between air intake and pontoon" method looks like a little bit odd, I guess I could try to cut the seal and spread it around the intake, what's the general consensus on this installation? Thanks

[David T]

If you are going to cut the seal you might just as well have bought some 3/4 square weatherstripping locally. Hide the cut around the backside and no one will see it. Have the seal sit on the pontoon and surround the air intake so you don't see the cut portion of the pontoon. Don't try "stuffing" it into the cut hole. It will look uneven because the gap between the fiberglass and the duct is not even all around. The purpose of the seal is just cosmetic, so you don't see the cut portion of the pontoon, it gives a "finished" look.

[hippieman9]

Hi there,

It looks like the pontoon foam O-Ring seal (106693) is no longer available. Mine are fairly crusty. What have you all used as a close looking alternative?

Thanks!

DeLorean Go Sells a new rubber version. same part number.

[Mark D]

Oh man, can we please get the toilet tank to bowl gasket PN added to the official crossover parts list? This is too funny. :rofl:

I mean DeLoreans get a lot of crap as it is (OH YES, PUNS!) and now we're using toilet parts to fix the air intake. It's a pretty great fix, don't get me wrong, but I'm just imagining what the rest of the automotive community must think of us.

[DMC-81]

Oh man, can we please get the toilet tank to bowl gasket PN added to the official crossover parts list? This is too funny. :rofl:

I mean DeLoreans get a lot of crap as it is (OH YES, PUNS!) and now we're using toilet parts to fix the air intake. It's a pretty great fix, don't get me wrong, but I'm just imagining what the rest of the automotive community must think of us.

:hysterical:

[JAZ_DMC]

Fantastic thread! Great way to wrap up a slow day at work. This is just the info I was looking for.

[ssdelorean]

Copying my original post from "What have you done to your DeLorean today?" to here so easier to find for others in the future.

----

I replaced the disintegrated sponge rings by the rear air intake/vents.

For less than $8.00 I picked up 2 yellow Mini Sink Plungers from HomeDepot (also available at Lowes). Removed the rubber rings. Cut & placed around the intake tubes. Seam placed in back corner and is not visible. I thought of adding some black RTV to secure in place but haven't yet as they don't move and stay in place just fine.

All credit to Chris Toller for this find.

68680 68679 68678

[jawn101]

Well I’ll be damned. That’s not half bad!! Cool find, to you and Chris both.


Copying my original post from "What have you done to your DeLorean today?" to here so easier to find for others in the future.

----

I replaced the disintegrated sponge rings by the rear air intake/vents.

For less than $8.00 I picked up 2 yellow Mini Sink Plungers from HomeDepot (also available at Lowes). Removed the rubber rings. Cut & placed around the intake tubes. Seam placed in back corner and is not visible. I thought of adding some black RTV to secure in place but haven't yet as they don't move and stay in place just fine.

All credit to Chris Toller for this find.

68680 68679 68678

[jawn101]

Stopped in Home Depot today and while I haven’t done a test fit yet, I will say these things are cheap, plentiful, and the rings look perfect. Nice quality soft rubber, too. Hopefully they hold up?https://uploads.tapatalk-cdn.com/20220715/5ca9edc411224defb3892371f6d8d3cf.jpg

[Jonathan]

Stopped in Home Depot today and while I haven’t done a test fit yet, I will say these things are cheap, plentiful, and the rings look perfect. Nice quality soft rubber, too. Hopefully they hold up?https://uploads.tapatalk-cdn.com/20220715/5ca9edc411224defb3892371f6d8d3cf.jpg

I just put these in my car too, Jon. Home Depot, $7.20 CAD each (yea, like everything else, it's twice as much as in the US....) and can now say, after 15 years of owning this car, that I have finally found something, a job or little project on the car that was.... wait for it..... EASY. And as advertised, and simple, and quick. I slipped these off the plunger, used a sharp knife to cut a slit in them, slid them around the duct and done. That was it. Nice find whoever stumbled on this one. Much appreciated.

[jawn101]

I just put these in my car too, Jon. Home Depot, $7.20 CAD each (yea, like everything else, it's twice as much as in the US....) and can now say, after 15 years of owning this car, that I have finally found something, a job or little project on the car that was.... wait for it..... EASY. And as advertised, and simple, and quick. I slipped these off the plunger, used a sharp knife to cut a slit in them, slid them around the duct and done. That was it. Nice find whoever stumbled on this one. Much appreciated.

Amazing, I love when things are actually easy! Will do it this evening or tomorrow.

[John U]

Just grabbed a couple of these. Thanks for the tip guys! Finally getting rid of the crumbling foam!

[Timeless]

Just grabbed a couple of these. Thanks for the tip guys! Finally getting rid of the crumbling foam!
I just bought 2 and will install this weekend. OT: Billet lower control arms showed up last night! :cool:

[Jonathan]

Just grabbed a couple of these. Thanks for the tip guys! Finally getting rid of the crumbling foam!

Hey... look at you go!!

Been a while John. Hope things are well with you and the car. They've been doing a cruise night in Elmira at the Canadian Tire every Thursday night if you feel like coming out. Myself and Richard have been a few times. Decent crowd and easy drive on the 80 zone roads getting there or back.

6872268723

[John U]

Hi Jonathan
Haven't been on here in a long time. Car hasn't been getting much use. Just had it at a cruise night tonight.
Might have to do the Elmira cruise next week if I am around!

[lazabby]

I did this. Looks good. Driver's side had the foam ring. I pulled out what I could. Passenger side, though, had a metal ring. It was not split so I think it was installed with the car. Does anyone else have the same thing?6887268873

[Rich]

I did this. Looks good. Driver's side had the foam ring. I pulled out what I could. Passenger side, though, had a metal ring. It was not split so I think it was installed with the car. Does anyone else have the same thing?6887268873

Yes, that ring is P/N 106694, Air Induction Pipe Extension. Item 22 in this diagram (https://store.delorean.com/parts/engine/1-4-0-air-inlet-system-air-cleaner-assembly.html).

Leave it in place.

The new seal you bought should cover it up well.

[DMC-Ron]

I wanted to add a feature to this discussion about using a sink plunger ring for the air duct collars (escutcheons) in the pontoon above the engine bay. First, hats off to Chris Toller who is credited for finding this solution. The foam covers in my car were deteriorated and looked awful. These plunger rings work perfect and probably look better than the factory new collars. To install you are forced to cut the collar. With vibration and time the ring cut separates. To counter, I used some very sticky tape to hold it together. Tedious and tricky to get installed, but it worked? for a year or so. Tape ultimately couldn't tolerate the heat. Magnets are my new solution and here are some photos. I'm pleased so far with how this has worked out.

A couple of nuances: First the ring is just a bit snug. There was a slight gap even with the tape. To accommodate, I have the magnets extend beyond the ring edge a bit. Install the gap where it is not visible. Second, the glue. Thanks to Chris Miles for introducing me to Goop. It is remarkable for many difficult gluing applications. It will glue most any material and retains some flexibility. It amazingly adhered the magnets to the vinyl plunger collar. Hint: rough up the inner surface of the collar with some coarse sandpaper. The grey dot on the magnets are to insure I have them correctly oriented when gluing (if they repel, flip one over).

Now the collars (escutcheons) snap into position. And they unclasp easily to remove and clean.

Link for plunger:
https://www.homedepot.com/p/HDX-Mini-Sink-Plunger-209568/324606982

Link for Goop:
https://www.amazon.com/dp/B01HN3HHIE?ref_=ppx_hzsearch_conn_dt_b_fed_asin_ti tle_2&th=1

Link for magnets:
https://www.amazon.com/dp/B0C3R7FDD5?ref_=ppx_hzsearch_conn_dt_b_fed_asin_ti tle_1&th=1

I?m hopeful that the magnets and the glue hold up over time.
Ron
71817
71818
71819
71820
71821

[JETS 81 DMC]

Great info. :cheers: 8)

F.Y.I.
Menards has Plumb Craft same design probably made by the same company for $2.96

Plumb Craft? Drain Plunger
Model Number: 7504400 Menards SKU: 6790950
https://www.menards.com/main/p-1563517867846.htm?utm_source=google&utm_medium=organic-shopping&utm_content=6790950&utm_campaign=Plumb+Craft

I got a laugh from the description at Home Depot:
User-friendly shift handle offers an easy firm grip

There are also 10X5X2 mm rectangular that would butt up against each other flush if the round ones don't hold good, but should be OK.
As strong as these magnets are I would think they could be glued about 1/32" or less back from the joint edge??
https://www.amazon.com/Grtard-Neodymium-Magnets-Rectangular-Whiteboard/dp/B0C7Z3RJHF/ref=sr_1_9?crid=19GH10MNBA8ZU&dib=eyJ2IjoiMSJ9.Dku_ASdc6jLfEB1SwGWPjER2uLlY3hfEn 5euoWTVIgsG-6WXOkmLoX5qHia_y5_OODdAK3eMzjjon3o0T47iw4CdyGmUYim 8mXugAr0zyO6VBfi-7QGprsTxZ7Tl-A7xj0xNVuw4ux1Hfo2Z4yHSg7W4POb2E7DzwQrPhASdRvNVZrG 9w0_A7144cJSjyIsIgRaZsRfKsS2QKrzG_HrMfToF8EHr4kpm5 aLryWRV10zeWvArqU3xjqK0AgdealohCPwFFtVZdPvY6e6huSq 0LOqlHP3nryb4vFEUdLxUdWo.DpRydxLhLt-mjLHteWsxjyn6Czemr9lNnqGxapEEbIU&dib_tag=se&keywords=neodymium%2Bmagnets&qid=1760302481&s=industrial&sprefix=neodymium%2Bmagnets%2Cindustrial%2C210&sr=1-9&th=1

I had bought the ones from Home Depot a couple of years ago. Not installed yet and in my to do parts box.

[DMC-Ron]

Andy,
I purposely stayed away from the Neodymium Magnets. Some of them are so powerful you need a crow bar to separate. In this application just a light magnet works. You want to be able to pull out the collar without the glue giving way.

That does look like the lowest price I've seen for the sink plunger.
Ron

[Timeless]

For those looking a more expensive option over the plunger:

https://www.deloreango.com/us/air-intake-rubber-seal-outer.html

[Mark D]

For those looking a more expensive option over the plunger:

https://www.deloreango.com/us/air-intake-rubber-seal-outer.html

I'm like 99.7% sure that is the exact same plunger gasket, just with the plunger removed and marked up 3x to cover the shipping cost and time to disassemble it from the plunger.