1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

Sun-Burned ’99 Spyder GS: Revived

Posted by DogWhistle, Jul 31, 2014

Please Support Fuel Injector Clinic
Please Support Morrison Fabrication
  1. DogWhistle

    DogWhistle Supporting VIP

    621
    220
    Joined Sep 13, 2012
    St. Paul, Minnesota
    Thanks. We just finished gutting the interior to install sound deadening, and while we had an empty interior, we FINALLY tracked down the source of the rain leaks. It wasn’t where we thought they were.

    Here’s a link to the article:
    https://www.dsmtuners.com/threads/sealing-the-most-common-leaks-in-spyder-roof.523613/
     
    Last edited: Jun 30, 2019

    Drag Race Build 1K  3

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    3K  6

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · automatic · 2G DSM

    2K  0

    1991 Mitsubishi Mighty Max
    manual · 4G63t Swapped

    3K  6

    1996 Eagle Talon TSi AWD
    385 whp · 378 lb/ft · 2G DSM
    Loading...
    Doubleot and Mauispyder like this.
  2. DogWhistle

    DogWhistle Supporting VIP

    621
    220
    Joined Sep 13, 2012
    St. Paul, Minnesota
    14. Full Interior Sound Deadening

    Those of you who spent hours scraping factory sound deadening from your car to save weight will cringe at this step. For daily driving and occasional touring, the "DSM drone" gets to you after a while. So, we installed Noiko sound deadening mats. They are constructed of about 2mm of rubber, with adhesive on one side, and an aluminum vapor backing on the other.

    At first we thought that simply removing the seats, console and carpet would give us enough access to the resonating panels, but we quickly learned there is no good stopping point, so we wound up gutting the car from dashboard to taillights. This turned into a bigger project than anticipated, but that pretty much describes every project ever undertaken on this car, LOL.

    Here are the basic tools you'll need. The red marker makes it easy to see your marks on a black surface. The material will cut easily with a scissors for the long cuts, but the razor blade will help with corners and any overlap.

    IMG_6592.JPG

    Removing the factory brittle sound deadening:

    IMG_6438.JPG

    Rust preventative spray on the any raw surfaces:

    IMG_6439.JPG

    We'll take as much help as we can get:

    IMG_6440.JPG

    All prepped and ready to start installing -- or so we thought:

    IMG_6463.JPG

    When installing the sound mats, do not precut them! You'll wind up with gaps around the edges of the area you were trying to cover. This is because the floor and braces are not straight or perpendicular to each other. Just peel the backing, start at one corner, and begin pressing down. You can cut the edges when you are done.

    The manufacturer also talks about rolling the mat tightly onto the surfaces. At first this seemed like overkill, but we soon discovered that air pockets left under the mat will turn into pools of condensation and could start rust. Buy a roller and roll it tight.

    Here is after the initial installation:

    IMG_6589.JPG

    IMG_6587.JPG

    IMG_6585.JPG

    The trunk sides were going to be hard to do given all of their bracing, vents, wires and lights, so we decided to do the backs of the panels instead:

    IMG_6655.JPG

    IMG_6656.JPG

    Here are the pictures with all the tunnel mechanisms and wiring bolted back in, and here is the padding we added for under the carpeting and under the rear seat:

    IMG_6800.JPG

    After it was all back together, we did quite a few daily trips and then, a 350 mile road trip. The result is not a complete sound proofing of the interior, but it does dampen the exhaust drone, and, just as importantly, the tire whine. It feels like a more substantial chassis. The results are noticeable.
     
    Last edited: Oct 6, 2019

    Drag Race Build 1K  3

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    3K  6

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · automatic · 2G DSM

    2K  0

    1991 Mitsubishi Mighty Max
    manual · 4G63t Swapped

    3K  6

    1996 Eagle Talon TSi AWD
    385 whp · 378 lb/ft · 2G DSM
    Loading...
  3. DogWhistle

    DogWhistle Supporting VIP

    621
    220
    Joined Sep 13, 2012
    St. Paul, Minnesota
    15. Upgrade to GSX 4-Wheel Disc Brakes

    The front disc/rear drum setup on the car provided adequate braking modulation, but didn't inspire confidence to push the car through corners on twisty roads. Plus, the heavy weight of the rear drums was not doing us any favors in the suspension department.

    We ordered a set of GSX spec disc brake calipers (dual piston front; single rear), ceramic pads, new rotors, stainless brakes hoses and new ebrake cables (since the end fittings are different). We sourced the disc backing plates from a donor GSX and had them bead blasted, and then we seal painted them with POR15 with rustoleum top coat.

    There are a couple write ups on how to do the conversion from rear drum to disc, but there are two things none of them mention: 1) Don't forget to buy bolts to attach the rear calipers to the backing plate. The size is M10 x 1.25 x 10mm, You'll need four of them. 2) Getting the clamps off the parking brake cables, and getting those lines out of the car is the most difficult part of the job. This is a Florida car, with virtually no rust, and yet those cable clamp bolts were corroded and tight. There are three clamp points for each ebrake cable, and 4 per side if you count the inside floor tunnel. The rear two finally came out with a little break loose spray, but each of the outside front ones had to have the bolt cut. We were VERY fortunate that our exhaust had v-band connections so that we could remove the back portion and get to the left side front clamp. Those cut bolts were replaced with stainless steel hardware, and everything we unbolted and reattached was slathered in anti-seize.

    Here are the pictures of how the process went:

    IMG_7550A.jpg

    Rear disc brakes removed and the new backing plate fitted into place, with the hub beginning to be reattached. The drum ebrake setup was difficult to install after the hub was in place, so on the other side, the ebrake components went on first.

    IMG_7554A.jpg

    The finished front brake with the dual piston calipers. The disc is painted with high temp brake paint on both sides of the hub area to prevent rust from seizing it onto either the hub, or the wheel.

    IMG_7553A.jpg

    One side complete. A good friend helped with the project, but with the difficulty of removing the existing ebrake cables and a parts run for bracket bolts, it was a solid 9 hour project, start to finish.

    As for the new feel of the braking system, it isn't more a more sensitive pedal response, but when you do press into them, there is a lot more clamping force available. They are easy to modulate, but that is on the second half of the pedal travel. Apparently, a 3G master cylinder has a more firm feel due to moving more fluid per travel. We might upgrade to that depending on how the pedal feel is after the pads break in.
     

    Drag Race Build 1K  3

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    3K  6

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · automatic · 2G DSM

    2K  0

    1991 Mitsubishi Mighty Max
    manual · 4G63t Swapped

    3K  6

    1996 Eagle Talon TSi AWD
    385 whp · 378 lb/ft · 2G DSM
    Loading...
  4. Widgmaster

    Widgmaster Supporting VIP

    365
    263
    Joined Aug 24, 2018
    Sarnia, ON, Canada
    Last edited: Aug 8, 2020

    113  11

    1969 Volkswagen Electric Cart
    rwd · automatic · Misc Vehicles

    109  1

    1977 Glastron Aqua Lift
    awd · automatic · Misc Vehicles

    151  1

    2002 Dodge Dakota Extended Cab
    rwd · automatic · Misc Vehicles

    335  10

    2001 Mitsubishi Eclipse Spyder GT
    fwd · automatic · Misc Vehicles
    Loading...
    spyderdrifter likes this.
  5. DogWhistle

    DogWhistle Supporting VIP

    621
    220
    Joined Sep 13, 2012
    St. Paul, Minnesota
    [QUOTE="Widgmaster, post: 153775685, member:165098”] ...Just thought I would mention a color back solution to a black faded top . [/QUOTE]

    Thanks. That looks promising. We’ve been looking for something like that. We’ll give it a try.
     

    Drag Race Build 1K  3

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    3K  6

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · automatic · 2G DSM

    2K  0

    1991 Mitsubishi Mighty Max
    manual · 4G63t Swapped

    3K  6

    1996 Eagle Talon TSi AWD
    385 whp · 378 lb/ft · 2G DSM
    Loading...

Share This Page

Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing Raven Fabrication RixRacing RockAuto RTM Racing SouthBay Fuel Injectors STM Tuned Track Decals Track Sculptures VR Speed Factory