Halo white 17' Toyota 86 featherweight build

[SuperTom]

Originally Posted by beltax90

Can't wait for more updates on this thing!

Yes your SARD wing may be the last piece of weight I add to this thing but visually will look great and provide some downforce without much drag

[SuperTom]

took a break from the Apocalypse today to install my genuine SARD wing.

First a few months ago I discoved the Matte finish on my Siebon CF parts was mainly a matte type clearcoat . Underneath revealed a gloss finish. So I wetsanded 2000 grit then compounded my truck to try to match the gloss of the new wing.

Matte dry carbon look Before



After wetsand and compound


Installed - the weave on the Sard is a little bit different but with them being both glossy there isn't much contrast



Did add some weight obviously. Ft86speedfactory list the knockoff sard at 5.5lbs. The wing itself on mine was 5.5, 7.5 with the hardware included



New weight = 2346.5lbs



Next goal is to wetsand/polish the rest of the Carbon on the car, and still working on underbody aero

[beltax90]

Sick!!

[WC-BRZ]

Any shots of the smooth underbody and how it meets with the rear splitter?

Actually, how about shots of the entire car now that you've put on the SARD wing?

[SuperTom]

Originally Posted by WC-BRZ

Any shots of the smooth underbody and how it meets with the rear splitter?

Actually, how about shots of the entire car now that you've put on the SARD wing?

Thanks for you interest both are a work in progress. Im still making the parts underneath. If work shuts down in the next week or so ill have enough time.


Ill take a full shot of car after I get the CF upfront all polished!

[SuperTom]

Well got some good progress with my underbody plates. I want to split this up into 2 parts. These are made of coroplast which is cheap, lightweight, readily available. Durability and heat resistance will be issues but hey this is a fun Coronavirus lockdown project.

PART 1 - is the plate connected the front of the diffuser which extends past the gas tank and uses the 4 gas tank strap bolts for extra support.

Here is my template. The center is 2 pieces riveted together for strength


Doesn't come out too heavy at 4.5 lbs.


Here are the brackets I made with aluminum heating and bending them on a vice.


Here is how the brackets are used with a black push clip in the bottom


Here is the initial connection to the Velox diffuser. You can see there is a hole from their setup


Riveted in a hole cover


Added aluminum rivnuts to holes that were already on the car


Bolted down with fender washers


So the main issue is that the center will eventually melt. When that happens I will add extra support around the hole.

Pic of some the connections points


Total weight added 4.75lbs



PART 2 making a whole center body plate.
This was easier as it only needed to be a large square. And I only used one layer since there was plenty of connection points underneath

Weight - comes in at 2.5 lbs, Ill say 2.75 with the added fender washers. But also lost 1.5lbs removing the stock plate from the factory. So a net gain in the middle of only 1.25lbs




Connected and overlapping the rear piece


Tried to get a pic from the rear to the front


Pic from front to rear. Will still be connected this middle plate all the way up to the front bumper so haven't used all front connection points




PART 3 will continue on Friday since it will be raining tomorrow.

I already cut out the center of the factory aluminum skid plate and replaced with coroplast. This is not only lighter but gives me easier connection points to the front plate I will be making and also flatter.

Stock Plate weight 4.75lb


New weight 3.25lbs

Underside black was some spraypaint test

[iDetail]

Insane attention to detail. Following.

[SuperTom]

Car Gods were on my side today! Deciding while I had the skid plate off I would attempt to install my Perrin Motor Mounts. It was the last thing I bought before the apocalypse was announced. I delayed doing this because I heard people had issues either having to take off their headers or removing the steering rack just to install these.


I had ZERO problems at all. Only thing I did extra was take off the bolt connecting the front pipe to the transmission mount.


I cut a 5" square of wood and simply jacked it up from the oil pan about 2-3".


While under there found my FP to Overpipe bolt had backed all the way out.


With the ace headers the driver side mount came out from the front, the passenger side came out from the back Easily!
These suckers weight 6lbs


Heres the Perrin mounts, 4lbs with all the hardware.




I know everyone is going to ask about NVH. I haven't driven yet since I still have the front in the air. But I did start it up and didn't notice too much more. I had solid mounts before on other cars that could make your teeth rattle. Plus I Save 2lbs of weight off the front!!

Back down to 2350.5lbs !

[new2subaru]

That's not a place I even considered dropping weight. Thnaks, Tom!

[SuperTom]

So im finished for the most part with the whole flat panel underbody project I just finished the front after some heat testing.

To recap with weight changes for the front
Original Skid plate converted to Coroplast saved -1.5lbs



Split the front into 2 panels with a combined weight of 1.75lbs





First heat run of 30 minute spirited drive the clips in the header area did not hold due to distortion of the coroplast. So I added some aluminum strips to use as mounting points
with some hardware im going to up estimate the weight to .75lbs


All done


Finished up front and total car. I may at some point consider a non aggressive splitter but it may not be necessary. Most look very heavy. Carbon fiber one from APR could be a winner and looks damn good https://aprperformance.com/2017_gt-86_brz/


So lost 1.5 lbs on the coroplast skid plate, added in 2.5lbs with the new plates and aluminum mounting. So only a 1lb gain up front

Putting me back up to 2351.5 LBS

EDIT 5/12: Forgot to weight the fiberglass stock cover came in at 1lb. So This section of the aero up front didn't gain any Weight

[SuperTom]

Now that im done with underbody paneling I also started the process of shining up the Seibon Dry carbon parts. I got the passenger door done today so here is a teaser. And you can see the comparison of it up against the fender.

Im mainly just wetsanding with 1000, 1500, 2000, then compound and wax.

[SuperTom]

got all the Dry/Matte CF wetsanded and polished. Im going to go back and readjust things to line up better before taking "glamour Shots"

Wetsanded clearcoat drying up


Finished hood

[SuperTom]

Also made my own TRD "STYLE" trunk aero stabilizer. From a piece of fender rubber moulding left over from a project on my Pathfinder that tapers from low to high

Cost ~$10 compared to $200 for real TRD
Did gain a 1lb of weight though but should at least block all the grime from getting into the trunk lid area and stop air from going into the trunk area

[StraightOuttaCanadaEh]

Ha! Awesome