Mazda-speed.com
April 22, 2019, 05:00:00 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Mazda-speed.com is no longer open and is now a read-only site. For Mazdaspeed Miata discussions, please visit the Mazdaspeed section on Miata.net.
 
   Home   Help Login Register  
Pages: [1] 2   Go Down
  Print  
Author Topic: LOWERING STOCK SEAT  (Read 10287 times)
0 Members and 1 Guest are viewing this topic.
JCALD
Third Gear
***
Posts: 127



« on: December 19, 2015, 02:55:42 PM »

I just completed a project to lower my stock seat without cutting out foam.  This was accomplished by deleting the seat slides and replacing them with fabricated units.  I netted 1" additional head room from the project.

I am 6'-2" so the seat is located as far back as possible without interfering with the original floor mount locations.  The seat bottom was angled up approximately 2" in the front to provide leg support.

The seat mounts are made from mild steel in various sizes.

Main runner - 1/4"x1-1/2" bar approximately 39 cm long.  Anchor holes are aligned with original connection points.
Front Anchor - 1/4"x1" bar approximately 7.5 cm long.
Riser - 1"x1"x1/8" steel tube approximately approximately 4 cm long with a 14 degree angle cut.
Seat belt anchor - 1/8" mild steel plate cut to match existing slide rail unit using original attachment points.



Overall view of seat mount brackets mounted to seat.



Right side bracket mounted to seat.  Note attachment points of bracket to original seat belt location.  This requires a spacer to be welded to the bracket.



Left side bracket mounted to seat.



Main rail at rear of seat.  Note slot for rear floor anchor bolt necessary since there is no room to drop floor mounting bolt in from the top.



Note slight bend in main rail at rear to align with floor mounting point.



Front mount detail.  Note slight bend in bracket to align with floor mount.

The rear floor mounting bolts are left in place with enough room to slide the seat rails in.  Once in place and the front brackets bolted down the rear bolts are tightened.  This operation is totally blind and requires a short/thin 14mm wrench.

HAVE FUN!!!
Logged

Begi Reflash, LE without FM intercooler, Harddog Sport Roll Bar, Seat Lowering Rails, Hard Top w/Carbon Wrap, PLX multi gauge in Rear View Mirror, 3.63 gears
joeereid
Fifth Gear
*****
Posts: 1156



« Reply #1 on: December 19, 2015, 08:07:18 PM »

Nice piece of work! Been so long since I did my Sparcos that I'd forgotten how much "fun" sorting them out was.
Logged

05 Mica, Sparco Speed, Hard Dog ACE with custom harness bar, Ultrashield 6 point harnesses,FM complete intake, O2 mod, FM downpipe, MR short shifter. Xida 700/400, 3.63 R+P (Spare), 3:9 R+P (current),EWUSA FMIC, Derale hardline delete PS cooler, FM Stage 2 fans w/ OEM connectors, Custom fab IC/Rad ducting, custom cowl intake/heatshield, Ultragauge,Rumblestrip Predictive Lap timer, APR custom mounted rear wing, Custom made streetable/removable front splitter, Run-Cool hood Louvers
millsj
Fifth Gear
*****
Posts: 2575



« Reply #2 on: December 19, 2015, 11:14:20 PM »

If you have visions of fabbing a bracket for the passenger side, you should know that the two sides have different dimensions.  I think the passenger side is narrower. Don't just build one like you did and think it will fit.

Excellent fab work!   afro
Logged

FM full intake, FM DP and Exhaust, AFCO Shocks (550/400 lb springs), FM O2 Modifier, Hallman MBC with in-cabin controller, Stewart-Warner Boost Gauge, HDHCDD with Harness Bar, RB 1.125" Front Sway Bar, E-bay Delta Fin 27x7x2.5 FMIC, Ultra-Shield Rally Sport seats, Carbotech XP-12/10 pads, SS Brake Lines, PLX DM-100 Multi-Gauge, FM Crossflow Radiator, Spal Fans, FM Oil Cooler, custom in-dash oil pressure warning LEDS, i-Shift LED shift lights, 15x9 bronze 6UL track tires, COT NASCAR wing, DIY front splitter, fully ducted radiator.
JCALD
Third Gear
***
Posts: 127



« Reply #3 on: December 19, 2015, 11:58:01 PM »

I always disassemble and verify dimensions before fabricating anything and I have no plans for the passenger side.
Logged

Begi Reflash, LE without FM intercooler, Harddog Sport Roll Bar, Seat Lowering Rails, Hard Top w/Carbon Wrap, PLX multi gauge in Rear View Mirror, 3.63 gears
barmato
Fifth Gear
*****
Posts: 743


« Reply #4 on: December 19, 2015, 11:59:29 PM »

Nice work.  I wish someone made brackets like this.  I don't have the equipment to fabricate them but I'd love to buy a set  Cry
Logged
svetki
Third Gear
***
Posts: 133


« Reply #5 on: December 23, 2015, 04:15:35 PM »

Nice work.  I wish someone made brackets like this.  I don't have the equipment to fabricate them but I'd love to buy a set  Cry
  Same here!
Logged

#752 LO - Joe's Intake, 2.5" eBay dp, 2.5" Magnaflow exhaust, ebay IC, Koyo Hyper-v, Koing Roller 205/45/16.
Bassparrott
Second Gear
**
Posts: 65


« Reply #6 on: December 23, 2015, 05:55:34 PM »

Here as well!
Logged

2004 VR MSM - FM Full Intake, FMIC, FM Downpipe and Exhaust, FM O2 Mod., Koyo radiator, GarageStar Door Bushings, Suzuki cowl washer bottle
eviltwinz
Third Gear
***
Posts: 202


Who needs technology?


« Reply #7 on: December 23, 2015, 08:34:18 PM »

Fab work looks great! Nice job!
Logged

2005 Ti Gray MSM- HDHCDDHT Roll Bar, Hard Dog Harness Bar, FM O2 Signal Modifier, Ebay FMIC 27X5.5X2.25, FM Stage 1 Airflow Kit, FM Valve Check, FM DP w/Cat, OEM Catback Exhaust, Koni Sport Shocks, GC Sleeves w/Eibach Springs 400/250, RB 1.125" Front Sway Bar, RB Sway Bar Brace Kit, OEM 14mm Rear Sway Bar, RB End Links, 949 Racing S/S Extended Clutch Line, Russell S/S Brake Lines

The only difference between me and a madman is that I'm not mad.
~Salvador Dali
water hazard
First Gear
*
Posts: 42


Do it right or do it over...


« Reply #8 on: December 25, 2015, 01:27:45 PM »

Did you reuse the original triangular plate to mount the seat belt buckle or is that a new piece as well? 
Logged

MSM #3092
FM Downpipe, Borla dual-tip exhaust
JCALD
Third Gear
***
Posts: 127



« Reply #9 on: December 25, 2015, 03:57:24 PM »

That is a new piece.  The original piece is welded on to the slide.  The new piece has a nut welded to the back to receive the standard seat belt attachment bolt.
Logged

Begi Reflash, LE without FM intercooler, Harddog Sport Roll Bar, Seat Lowering Rails, Hard Top w/Carbon Wrap, PLX multi gauge in Rear View Mirror, 3.63 gears
ryanj
Second Gear
**
Posts: 76


« Reply #10 on: January 05, 2016, 09:21:50 PM »

Very nice work.  If you ever decide to build/sell a few, give me a shout.  I'd buy immediately. 
Logged
JCALD
Third Gear
***
Posts: 127



« Reply #11 on: January 06, 2016, 01:09:36 AM »

Not ready to start a fab shop yet, but what would you guys consider a fair price for it?  If I feel like I can come out a little ahead on them I might consider.
Logged

Begi Reflash, LE without FM intercooler, Harddog Sport Roll Bar, Seat Lowering Rails, Hard Top w/Carbon Wrap, PLX multi gauge in Rear View Mirror, 3.63 gears
ryanj
Second Gear
**
Posts: 76


« Reply #12 on: January 06, 2016, 01:37:24 AM »

Honestly, I wouldn't even know what something like this would cost. 

How much did it cost you in parts and material?
Logged
water hazard
First Gear
*
Posts: 42


Do it right or do it over...


« Reply #13 on: January 06, 2016, 11:52:35 AM »

I would pay $250 right now
Logged

MSM #3092
FM Downpipe, Borla dual-tip exhaust
ryanj
Second Gear
**
Posts: 76


« Reply #14 on: January 06, 2016, 04:09:59 PM »

I'd put up $100-150 for one set of rails.  I'd pay right now as well.
Logged
Pages: [1] 2   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!

Copyright 2007-2016, Eunos Communications LLC