richiep
Club Member
Thought I’d spin this topic off from the Project Dixie thread as it is useful info for all that should maybe get a sticky somewhere. Sound deadening during restoration of an S30 is an issue that often leads to people trying all sorts of different solutions, especially if the original factory tar material has been removed during the tear-down and bodywork phase. Often this is because it has dried out, become brittle, and/or lifted and let moisture in, contributing to rusted floors, etc. (at the factory, these tar mats were applied directly to the bare metal and then overpainted - no primer or paint underneath!).
Many people end up using a modern product of the Dynamat variety - bitumen-based, with shiny foil skin, etc. While that looks very “Discovery car show style” and certainly does the job, it is unsatisfactory IMO if seeking to replicate the factory look. Finding alternative products is difficult as if you try searching the web, mostly you are confronted with pages of silver shiny Dynamat knock-offs with extravagant marketing claims.
HOWEVER:
Nissan still produce and use a version of the original bitumen sound deadening sheet material. It is used on a variety of modern vehicles, and can be purchased from Nissan directly- although the prices from Nissan U.K. and other U.K. or US dealers are shocking at about 90 quid a sheet.
But - one can purchase them from Japan at a considerable saving - costing about £25 a sheet. I ordered them from Amayama, who have a massive database of Japanese manufacturer parts searchable by part number, with factory manual diagrams to help. With post, it came in about £240 including post, given they are quite heavy and large.
To do a Z in a way that matches the factory design apparently requires five kits. Each of those kits is one adhesive-backed sheet approximately 80 x 100cm. That should provide enough to cut all the sectional designs from. The material is slightly thinner than the 70s stuff but is a part number succession piece, so is “correct”. I will be applying mine over epoxy primer as opposed to bare metal, and then overpainting with more epoxy, 2k primer and base/clear. Application will be with a heat gun to warm up and a roller.
The all important info:
G5930-89904 “Insulator”
I also managed to track down some designs someone had created in CAD for the floor sections for a 240Z. Still hunting for info on the tunnel but there are reference images out there. I will update this thread with that stuff. Here’s a snap of the templates though:
Many people end up using a modern product of the Dynamat variety - bitumen-based, with shiny foil skin, etc. While that looks very “Discovery car show style” and certainly does the job, it is unsatisfactory IMO if seeking to replicate the factory look. Finding alternative products is difficult as if you try searching the web, mostly you are confronted with pages of silver shiny Dynamat knock-offs with extravagant marketing claims.
HOWEVER:
Nissan still produce and use a version of the original bitumen sound deadening sheet material. It is used on a variety of modern vehicles, and can be purchased from Nissan directly- although the prices from Nissan U.K. and other U.K. or US dealers are shocking at about 90 quid a sheet.
But - one can purchase them from Japan at a considerable saving - costing about £25 a sheet. I ordered them from Amayama, who have a massive database of Japanese manufacturer parts searchable by part number, with factory manual diagrams to help. With post, it came in about £240 including post, given they are quite heavy and large.
To do a Z in a way that matches the factory design apparently requires five kits. Each of those kits is one adhesive-backed sheet approximately 80 x 100cm. That should provide enough to cut all the sectional designs from. The material is slightly thinner than the 70s stuff but is a part number succession piece, so is “correct”. I will be applying mine over epoxy primer as opposed to bare metal, and then overpainting with more epoxy, 2k primer and base/clear. Application will be with a heat gun to warm up and a roller.
The all important info:
G5930-89904 “Insulator”
I also managed to track down some designs someone had created in CAD for the floor sections for a 240Z. Still hunting for info on the tunnel but there are reference images out there. I will update this thread with that stuff. Here’s a snap of the templates though: