FB rx7 Tar removal questions
#1
Full Member
Thread Starter
Join Date: Jan 2010
Location: indinapolis In
Posts: 143
Likes: 0
Received 0 Likes
on
0 Posts
FB rx7 Tar removal questions
i have an 84 with stripped interior, im currently at 2100lbs and wanna get lighter so im wanting to remove the tar sound deadening, so does this serve any structural purpose or is it all for noise reduction.
if its just for noise i will be removing it with dry ice as i heard this is the most effective way.
if its just for noise i will be removing it with dry ice as i heard this is the most effective way.
#4
Full Member
Thread Starter
Join Date: Jan 2010
Location: indinapolis In
Posts: 143
Likes: 0
Received 0 Likes
on
0 Posts
Great thanks both of you for the quick response and only 40lbs looks like alot more then that in the car but dry ice is about 98 cents a lb so guess i willl be buying some, has anyone done this and know about how much dry ice i need to buy? i have to drive 45 minutes to get dry ice.
Last edited by TS87FC3S; 04-18-11 at 12:45 PM.
#6
common sense prevails....
iTrader: (7)
Join Date: Jul 2008
Location: Chino and Lake Arrowhead Calif
Posts: 1,669
Likes: 0
Received 9 Likes
on
9 Posts
I have done it!! It was easy but be prepared to use a lot of dry ice. I took dry ice and broke it in small pieces all over the floorboard. Use a rubber mallet to smash the ice into smaller pieces to aid in coverage.
Then take the rubber mallet and bang the hell out of the floorboard. It pops up super easy. It took me about an afternoon to remove all the tarboard.
I DON'T really think I pulled 40 pounds out, but maybe 15-20# of total weight.
Then take the rubber mallet and bang the hell out of the floorboard. It pops up super easy. It took me about an afternoon to remove all the tarboard.
I DON'T really think I pulled 40 pounds out, but maybe 15-20# of total weight.
#7
common sense prevails....
iTrader: (7)
Join Date: Jul 2008
Location: Chino and Lake Arrowhead Calif
Posts: 1,669
Likes: 0
Received 9 Likes
on
9 Posts
Great thanks both of you for the quick response and only 40lbs looks like alot more then that in the car but dry ice is about 98 cents a lb so guess i willl be buying some, has anyone done this and know about how much dry ice i need to buy? i have to drive 45 minutes to get dry ice.
Trending Topics
#9
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,916
Received 2,655 Likes
on
1,880 Posts
#10
Full Member
Thread Starter
Join Date: Jan 2010
Location: indinapolis In
Posts: 143
Likes: 0
Received 0 Likes
on
0 Posts
I have done it!! It was easy but be prepared to use a lot of dry ice. I took dry ice and broke it in small pieces all over the floorboard. Use a rubber mallet to smash the ice into smaller pieces to aid in coverage.
Then take the rubber mallet and bang the hell out of the floorboard. It pops up super easy. It took me about an afternoon to remove all the tarboard.
I DON'T really think I pulled 40 pounds out, but maybe 15-20# of total weight.
Then take the rubber mallet and bang the hell out of the floorboard. It pops up super easy. It took me about an afternoon to remove all the tarboard.
I DON'T really think I pulled 40 pounds out, but maybe 15-20# of total weight.
#11
common sense prevails....
iTrader: (7)
Join Date: Jul 2008
Location: Chino and Lake Arrowhead Calif
Posts: 1,669
Likes: 0
Received 9 Likes
on
9 Posts
I pulled ALL the flooring tar off, all the tar behind the front seats as well as all the tar in the back around the spare tire. Also all the insulation (non tar) on the firewall. I weighed it all... It was 20# in a 84 GSL.
20# is still 20#!!! Do it and weigh it. You will see I am right.
20# is still 20#!!! Do it and weigh it. You will see I am right.
#12
Full Member
Thread Starter
Join Date: Jan 2010
Location: indinapolis In
Posts: 143
Likes: 0
Received 0 Likes
on
0 Posts
I pulled ALL the flooring tar off, all the tar behind the front seats as well as all the tar in the back around the spare tire. Also all the insulation (non tar) on the firewall. I weighed it all... It was 20# in a 84 GSL.
20# is still 20#!!! Do it and weigh it. You will see I am right.
20# is still 20#!!! Do it and weigh it. You will see I am right.
How many pounds of dry ice did it take and when i say stripped i mean stripped the tar and dash pad, steering wheel and shifter is all thats left lol
#14
Full Member
Thread Starter
Join Date: Jan 2010
Location: indinapolis In
Posts: 143
Likes: 0
Received 0 Likes
on
0 Posts
#15
the torquinator
iTrader: (1)
Yes there are lot's of good lightweight sound deadening alternatives. The modern stuff quiets better and is much lighter than the old stuff we are removing.
There are sprays, mats, all sorts of stuff. There is a pretty good thread in the detailing and restoration section.
There are sprays, mats, all sorts of stuff. There is a pretty good thread in the detailing and restoration section.
#16
the torquinator
iTrader: (1)
I worked in a car audio shop for years. We used Second Skin brand sound deadening stuff. Very good, but the other brands are quite good too.
We usually had kids wanting louder bass with less rattle, but occasionally we'd get a customer with a sports car who wanted a lightweight sound deadening solution for a daily driven racecar. It worked out well. There are different materials that work better for different frequencies of sound control and for different problems. Very interesting exercise in acoustic physics
We usually had kids wanting louder bass with less rattle, but occasionally we'd get a customer with a sports car who wanted a lightweight sound deadening solution for a daily driven racecar. It worked out well. There are different materials that work better for different frequencies of sound control and for different problems. Very interesting exercise in acoustic physics
#17
Never Follow
iTrader: (18)
I pulled ALL the flooring tar off, all the tar behind the front seats as well as all the tar in the back around the spare tire. Also all the insulation (non tar) on the firewall. I weighed it all... It was 20# in a 84 GSL.
20# is still 20#!!! Do it and weigh it. You will see I am right.
20# is still 20#!!! Do it and weigh it. You will see I am right.
Also, I used a hammer and chisel on a cold day, didn't bother getting dry ice
#18
Full Member
Thread Starter
Join Date: Jan 2010
Location: indinapolis In
Posts: 143
Likes: 0
Received 0 Likes
on
0 Posts
I wonder if its a yearly thing... I pulled all the tar out of my 83 and it was definatly closer to 40lbs. maybe they used different stuff on the 84/85 cars?? Who knows, will be curious to see how much weight he comes up with though.
Also, I used a hammer and chisel on a cold day, didn't bother getting dry ice
Also, I used a hammer and chisel on a cold day, didn't bother getting dry ice
#19
common sense prevails....
iTrader: (7)
Join Date: Jul 2008
Location: Chino and Lake Arrowhead Calif
Posts: 1,669
Likes: 0
Received 9 Likes
on
9 Posts
I used about 5 pounds of dry ice. I would definitely do it this way. Air chisels are not needed! If you do it with dry ice, it does not bang up your metal!
#20
Never Follow
iTrader: (18)
I'm sure the dry ice method is the best. i would not use an air chisel, too much risk of tearing through the sheet metal. I used a old dull chisel and made sure it was angled quite a bit when striking it so there was little risk of denting/cutting the floor. In the case of both my 83's it was coming up in fairly big pieces without dry ice, so i'm sure with the dry ice it would be even easier.
#21
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,916
Received 2,655 Likes
on
1,880 Posts
#23
since you helped me in my thread, I feel obligated to help you in yours.
http://www.youtube.com/watch?v=Fbb5dD98b5s
http://www.youtube.com/watch?v=Fbb5dD98b5s
#24
1st-Class Engine Janitor
iTrader: (15)
Dry ice, bare hands, claw hammer, flip-flops... clearly professionals at work, heh.
Wonder why he didn't use the claw end to rake the tar loose, instead of his fingers?
For those who haven't messed with dry ice: Use gloves to prevent burns (-100f, you know - will frost-burn uncalloused skin almost instantly) and make sure you have decent ventilation because the dry ice sublimates into odorless CO2, which being heavier than air will collect in low areas, and can lead to hypoxia if it gets too highly concentrated. Can sneak up on you fast, especially when exerting yourself.
Wonder why he didn't use the claw end to rake the tar loose, instead of his fingers?
For those who haven't messed with dry ice: Use gloves to prevent burns (-100f, you know - will frost-burn uncalloused skin almost instantly) and make sure you have decent ventilation because the dry ice sublimates into odorless CO2, which being heavier than air will collect in low areas, and can lead to hypoxia if it gets too highly concentrated. Can sneak up on you fast, especially when exerting yourself.