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Workshop => Body and Controls => Topic started by: broken1 on February 29, 2016, 12:29:31 AM

Title: Difference between 86 & 87 gas tanks
Post by: broken1 on February 29, 2016, 12:29:31 AM

I always thought the 86-87 tanks were all the same & the 88-89 tanks were the same. I learned the 86 tanks are actually different than the 87 tanks. 87 tanks share the same dimensions as the 88-89 tanks which are shorter than the 86 tank by about 1/2". The red tank I have wouldn't go far enough forward to get the bolt in on the 86 frame & the 88-89 tank I have is the same way. This is how the OEM 86 blue tank mounts, perfectly centered:
(http://i1080.photobucket.com/albums/j332/scrappyfab/DSCN3777_zps4txgcbz4.jpg) (http://s1080.photobucket.com/user/scrappyfab/media/DSCN3777_zps4txgcbz4.jpg.html)
This is how the red 87 tank mounts up to the 86 frame:
(http://i1080.photobucket.com/albums/j332/scrappyfab/DSCN3774_zpscnsu9aqd.jpg) (http://s1080.photobucket.com/user/scrappyfab/media/DSCN3774_zpscnsu9aqd.jpg.html)
Made a 3/16" spacer from kydex plastic to get the bolt in:
 (http://i1080.photobucket.com/albums/j332/scrappyfab/DSCN3776_zpsecne5taf.jpg) (http://s1080.photobucket.com/user/scrappyfab/media/DSCN3776_zpsecne5taf.jpg.html)
(http://i1080.photobucket.com/albums/j332/scrappyfab/DSCN3771_zps5un1u0im.jpg) (http://s1080.photobucket.com/user/scrappyfab/media/DSCN3771_zps5un1u0im.jpg.html)
The only physical differences I noticed between the 2 was the length & the 86 tank has provisions for 2 rubber donuts per side on the lower section & the 87 tank has only 1 per side:
(http://i1080.photobucket.com/albums/j332/scrappyfab/DSCN3769_zpsudyhopks.jpg) (http://s1080.photobucket.com/user/scrappyfab/media/DSCN3769_zpsudyhopks.jpg.html)
 (http://i1080.photobucket.com/albums/j332/scrappyfab/DSCN3770_zpsvt8nh9a7.jpg) (http://s1080.photobucket.com/user/scrappyfab/media/DSCN3770_zpsvt8nh9a7.jpg.html)
           [MENTION=24]croat1[/MENTION] sent me a pic of a red tank with 2 donuts per side &           [MENTION=463]Skeans1[/MENTION] said his tank was the same. I think that can be used as a quick visual reference to determine the years of the earlier tanks. Side by side you can clearly see the different lengths, 86 on the left & 87 on the right. I checked the 87 tank against the 88-89 tank I have & it's the same length:
(http://i1080.photobucket.com/albums/j332/scrappyfab/DSCN3780_zps7rpmlweg.jpg) (http://s1080.photobucket.com/user/scrappyfab/media/DSCN3780_zps7rpmlweg.jpg.html)

Also Jared said the 86 tank he has on his 88 frame is opposite from the way the 87 tank mounts on the 86 frame & the bolt on his is toward the rear of the mount.

Title: Difference between 86 & 87 gas tanks
Post by: Pumashine on February 29, 2016, 12:32:27 PM

After market tanks are like the 89. I made a spacer like you did to get it centered on my green IMS tank.

Title: Difference between 86 & 87 gas tanks
Post by: Piediddy on February 29, 2016, 12:42:42 PM

Aren't the caps different also? Certian year has bigger cap?

Title: Difference between 86 & 87 gas tanks
Post by: JohnTabata1 on February 29, 2016, 12:45:38 PM

Good info in this post!

Title: Difference between 86 & 87 gas tanks
Post by: havinnoj on February 29, 2016, 02:39:00 PM

Quote from: JohnTabata1;65040

Good info in this post!

Yes seriously.  I did not know the minor detail changes between 86 and 87.  Thank you for posting this up and documenting with pictures!  :cool:

Title: Difference between 86 & 87 gas tanks
Post by: red88r on February 29, 2016, 11:12:20 PM

Quote from: Piediddy;65039

Aren't the caps different also? Certian year has bigger cap?

Yes 86-87 have a bigger cap and are different than 88-89. The Clark tanks run a 88-89 style cap.