New Seat Foam?
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- markjhatch
- Roadster Fanatic
- Posts: 209
- Joined: Mon Sep 26, 2011 2:25 pm
- Location: Moraga, CA
New Seat Foam?
Good news is that I am starting to look at my seats ('69, stock with built in headrest) and thinking of putting them back in once the interior is complete. The bad news is that I think that the foam on the seat bottom has rottened with age and perhaps the straps on the bottom need to be replace too. The straps seems like something that any upholstery shop could do. However, I would think that replacing the foam would require access to the OEM part? Or is this something any auto upholstery shop can handle. I couldn't find replacement foam from the usual set of Roadster suppliers.
I am in the SFO bay area (actually Moraga), so if there are anybody with local recommendations, that would be nice.
Thanks
Mark
I am in the SFO bay area (actually Moraga), so if there are anybody with local recommendations, that would be nice.
Thanks
Mark
69'2000
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...
- fj20spl311
- Roadsteraholic
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- Location: San Diego, Ca
Re: New Seat Foam?
Any good shop should be able to replace the foam.
They cut and form foam from sheets and blocks.
Phil
They cut and form foam from sheets and blocks.
Phil
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
- datsunrides
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- Location: Roseburg, Or
Re: New Seat Foam?
I use Top Notch upholstry in San Jose for all my work. Tony does good work for a reasonable price. Been using him for over 15 years. He did my roadster and fully rebuilt the seats with new strapping and foam.
Mark
Mark
1966 Roadster
Turbo / EFI U20 (T25 w/ SDS EMU.)
Turbo / EFI U20 (T25 w/ SDS EMU.)
- markjhatch
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- Joined: Mon Sep 26, 2011 2:25 pm
- Location: Moraga, CA
Re: New Seat Foam?
Great, I go down to San Jose all the time. Will disassemble the seats this weekend and drop them off when I am down in the valley.
Mark
Mark
69'2000
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...
- Linda
- Fraternal Den Mother-RIP
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- Location: Los Angeles
- Model: 1500/1600
- Year: High Windshield-68-70
Re: New Seat Foam?
Or you can get some reproduction seat covers from vendors and buy foam pieces in any density from a foam shop. You can carve it with an electric knife.
Linda
Linda
Sadly-Linda has passed away 2022. She was the 311's den mother and drove the first Rare-Parts ball joint project. RIP.
- markjhatch
- Roadster Fanatic
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- Joined: Mon Sep 26, 2011 2:25 pm
- Location: Moraga, CA
Re: New Seat Foam?
My seat covers are in perfect condition (I was fortunate to find two seats that had been recovered back in 1994....) Unfortunately, I feel like I am sitting on the floor when I sit on them (and no, I am not that heavy....) 
Mark

Mark
69'2000
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...
- Gregs672000
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Re: New Seat Foam?
If you discover that the foam itself is still ok, you can tighten the straps by unhooking them, unbending the metal that secures the metal plate that creates the "loop", and punching new holes (assuming the straps are still intact and stretchable). Reverse the process to create the loop and re-attach. Just did this on mine, much better. I also put some new cloth material between the foam and the straps, as the burlap bag stuff was coming apart. I used an old sheet and just cut out a panel.markjhatch wrote:Good news is that I am starting to look at my seats ('69, stock with built in headrest) and thinking of putting them back in once the interior is complete. The bad news is that I think that the foam on the seat bottom has rottened with age and perhaps the straps on the bottom need to be replace too. The straps seems like something that any upholstery shop could do. However, I would think that replacing the foam would require access to the OEM part? Or is this something any auto upholstery shop can handle. I couldn't find replacement foam from the usual set of Roadster suppliers.
I am in the SFO bay area (actually Moraga), so if there are anybody with local recommendations, that would be nice.
Thanks
Mark
I'm cheap! Seats are great however and I have more money for jets!
Greg Burrows
'67 2000 #588
Tacoma, WA
'67 2000 #588
Tacoma, WA
- jrusso07
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- Location: Penn Yan, NY
- Model: 2000
- Year: High Windshield-68-70
Re: New Seat Foam?
Depending on how badly degraded the foam is, you can glue it to a block of new foam about 1" think (new foam on bottom) and tighten the seat straps.
No carving and a nice comfortable seat. Worked well for me on 69 seats.
I also laid and glued a piece of leather from an old sofa over the foam before putting the seat cover on to try and stem future wear...not sure how it's working...
No carving and a nice comfortable seat. Worked well for me on 69 seats.
I also laid and glued a piece of leather from an old sofa over the foam before putting the seat cover on to try and stem future wear...not sure how it's working...
Joe
1969 SRL311 - Solex
1970 SPL311 - U20 mod
1970 SRL311
1969 SRL311 - Solex
1970 SPL311 - U20 mod
1970 SRL311
- fj20spl311
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- Location: San Diego, Ca
Re: New Seat Foam?
That sounds like you just need new webbing......markjhatch wrote:My seat covers are in perfect condition (I was fortunate to find two seats that had been recovered back in 1994....) Unfortunately, I feel like I am sitting on the floor when I sit on them (and no, I am not that heavy....)
Mark
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
- Solex68
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Re: New Seat Foam?
Ditto on that. New webbing = new life for these Datsun Seats. They will feel like new. I did mine and it is an amazing change. I did not change or even look at my foam.fj20spl311 wrote:That sounds like you just need new webbing......markjhatch wrote:My seat covers are in perfect condition (I was fortunate to find two seats that had been recovered back in 1994....) Unfortunately, I feel like I am sitting on the floor when I sit on them (and no, I am not that heavy....)
Mark
Greg a.k.a SOLEX68 - http://www.datsunvents.com/
Laguna Hills, CA
68 2000
Always willing to help another Datsun Roadster owner
Pending installs: Stan Stealth Dizzy
Laguna Hills, CA
68 2000
Always willing to help another Datsun Roadster owner
Pending installs: Stan Stealth Dizzy
- dbrick
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Re: New Seat Foam?
I did the straps on the 66, huge difference, but the foam was shot. Just quickly cut a piece of 1.5" foam and put it in at Watkins Glen, worlds better. still need to trim and shape it, but the 250 miles home was easier.Solex68 wrote: Ditto on that. New webbing = new life for these Datsun Seats. They will feel like new. I did mine and it is an amazing change. I did not change or even look at my foam.
Dave Brisco
Take my advice, I'm not using it"
66 2000 The Bobster
64 1500 in pieces for sale
1980 Fiat X1/9
2009 Volvo C-70
08 Expedition EL, STUPID huge but comfy
1962 Thompson Sea Lancer, possible money pit
- Solex68
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Re: New Seat Foam?
That's good to know. I have some fresh skin to put on my seats and I will assess the foam at that time. 1.5 inch....ok. Cool. Thanks for the info.dbrick wrote:I did the straps on the 66, huge difference, but the foam was shot. Just quickly cut a piece of 1.5" foam and put it in at Watkins Glen, worlds better. still need to trim and shape it, but the 250 miles home was easier.Solex68 wrote: Ditto on that. New webbing = new life for these Datsun Seats. They will feel like new. I did mine and it is an amazing change. I did not change or even look at my foam.
Greg a.k.a SOLEX68 - http://www.datsunvents.com/
Laguna Hills, CA
68 2000
Always willing to help another Datsun Roadster owner
Pending installs: Stan Stealth Dizzy
Laguna Hills, CA
68 2000
Always willing to help another Datsun Roadster owner
Pending installs: Stan Stealth Dizzy
- dbrick
- Roadster Fanatic-Site Supporter
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- Joined: Thu Sep 09, 2004 11:05 pm
- Location: Kenilworth, New Jersey
Re: New Seat Foam?
If I could buy it ready made, I would, or other option, find or borrow a set of good seat foam, get the measurements and make some. The memory foam you can get now would make a nice thin pad with good support. I'm surprised someone doesn't repro it. Lots of new seat upholstery being sold and put over crap foam
Dave Brisco
Take my advice, I'm not using it"
66 2000 The Bobster
64 1500 in pieces for sale
1980 Fiat X1/9
2009 Volvo C-70
08 Expedition EL, STUPID huge but comfy
1962 Thompson Sea Lancer, possible money pit
-
- Roadster Fanatic
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- Location: Smithville ON Canada
Re: New Seat Foam?
Hey Dave, I put that piece of foam under my seat for the ride home and what a difference it made. Time to tighten the straps.
George
67 2000
69 2000
76 620 K/Cab
67 2000
69 2000
76 620 K/Cab
- markjhatch
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- Joined: Mon Sep 26, 2011 2:25 pm
- Location: Moraga, CA
Re: New Seat Foam?
Should be picking up my seats from Top Notch tomorrow. New foam and webbing @ $125/seat. Given what I paid for seat belts restoration, this looks like a real deal...
Will let you know how they look.
Mark
Will let you know how they look.
Mark
69'2000
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...
Previous owner won the car in a poker game in Colorado -- he should have folded while he was ahead...