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Old 07-29-2005, 12:02 PM   #1
nate.the.great
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Default Seat FAQ

I really needed one of these, and I couldn't find one, so here goes...

Aftermarket Seat FAQ

What are the different types of seats?
There are two basic types of seats, a reclinable seat, and a fixed seat. Most people choose reclinable seats in their daily driver, and a fixed seat in their dedicated track car. It depends on what you're comfortable with. There are quite a few people with a fixed seat in their daily driver.

What are the different types of mounts?
There are two basic types of mounts, bottom mount, and side mount. Bottom mount seats have mounts on the bottom, and side mount seats have mounts on the side.

I plan on racing competitively, do I need to do anything different?
People who race competitively do not use sliders or they weld their sliders after choosing the appropriate seat position. In a high impact crash the driver is relying on those sliders to hold his seat still, and at 80mph that may not be enough. Sliders are actually not FIA legal. So, there are three solutions. Either use a sidemount that bolts directly to the bracket, use sliders and then weld them after they are in your desired position, or use custom mounted seats. Also, make sure re-use the stock bolts that held your stock seat brack to the car. (thanks Unabomber)

What do I need to install a bottom mount seat?
1. Bracket - This is what is actually bolted down to the car.
2. Sliders - The sliders attach the bracket to the seat.
3. Seat - I hope you know what the seat is.

What do I need to install a side mount seat?
1. Bracket
2. Sliders - This will attach the side mounts to the bracket.
3. Side Mounts - This will attach the sliders to the seat.
4. Seat
Some people directly bolt the side mounts to the bracket. There are many mounting points on the side mounts so the seats can be adjust by how you mount them. This is obviously a pain in the butt to adjust, and I only recommend this for cars with ONE driver.

How low does the aftermarket seat sit?
Usually they sit 2-3 inches lower than stock.

Is there any way to make it sit higher?
People have used washers to make it sit higher, but it's safety is debated.

How do I get rid of the airbag light?
You can put in a 3.3 Ohm resistor (hard to find) to make this go away, or 3 10 Ohm resistors run in parallel.

What seat dimensions will fit my GDB aka 2002+ Impreza?
Shoulder dimension should be 21.5. 22.5 will fit squeezing up against the B-Pillar.
Leg dimension should be 19. 20 will fit squeezing up against the center console.

What if I want a larger seat dimension?
A shoulder dimension of 22.5 hit the B pillar on certain settings and pinch the seatbelt so it doesn't work.
A leg dimension of 20 or up will rub on the center console, and will require a special installation method. See below.

How do I remove the stock seat?
1. Remove all 4 bolts that attach the seat to the car.
2. Unhook all wires going to the seat/seatbelt.
3. Lean the seat almost all the way down.
4. Carefully remove the stock seat out through the front door.

How do I put in the aftermarket seat?
(note: this information was learned at the cost of many scratches on the interior of my car and personal frustration...)
1. Put the bracket in the car and make sure fitment is close. Look at how much room is left for the seatbelt and mount it appropriately.
2. Assemble the bracket, sliders, and seat.
3. Put it through the back door. Don't even try the front!! Put the base of the seat first through the back door. After it is in there rotate the seat into position.
4. This step is only for wider seats. Slide the seat back on the sliders before step 3. This step is important for bigger seats because the rear of the center console is thinner.
5. Bolt in the front two mounts.
6. Have a buddy sit in the seat to force/keep the back down.
7. Bolt in the rear two mounts.

I stripped the holes where the seat bolts to the chassis!
1. The front two bolts and the left rear bolt are M10x1.25x30. Your local Ace Hardware will have them in grade 8.8, which is very good. The rear right bolt is M11x1.25x30. Try Ace Hardware, and if they don't have it, stop by the dealership.
2. Since the hole is stripped, you will have to buy a tap. Again, you local Ace Hardware should have this for 5.99. For those of you who don't know what a tap is... It basically recuts/cleans up your jacked up threads. However, after this is done, your threads will not be as strong so, don't overtighten! You may want to consider #3.
3. Drill out the hole and retap with M12x1.25, or try to keep the existing hole and retap with M11x1.25. I personally haven't had to do this yet, so I can't offer any insight. I retapped with M10x1.25, but I can't tighten it all the way. I will re-update if I end up tapping to a larger size. However, there is a strong chance you will have to drill out the seat hole a little in order to make this work.
4. You can also use a helicoil. I helicoil restores the threads. You will drill a hole to eliminate old threads, tap the hole (aka create new threads), and then install an "adapter" so that you can use the original bolt size.

Please PM me if you think I should add or edit anything.
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Last edited by nate.the.great; 10-18-2006 at 04:24 AM.
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Old 07-29-2005, 12:06 PM   #2
ranger5oh
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great writeup
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Old 07-29-2005, 12:30 PM   #3
BillyC
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cool, stickie!
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Old 07-29-2005, 12:30 PM   #4
Trip McNealy
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not bad.

Unabomber has teh compet1tion!!! oh noes!!
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Old 07-29-2005, 01:03 PM   #5
nate.the.great
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thanks for the compliments, i hope this helps people, and t3H unabomber and I are in different leagues, haha...

i'm just trying to learn how to faq... lol...
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Old 07-29-2005, 02:00 PM   #6
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FAQs are popping up everywhere! Nice work! PM'd you some of my seat n00b advice.
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Old 07-29-2005, 05:26 PM   #7
cstratton04
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knowledge is power!
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Old 09-16-2005, 02:03 AM   #8
gharari
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I am looking into upgrading my seats in my '05 RS...

Some questions about seats:

1)Are the '05 wrx seats, with the integrated head restraints, the same shape/fit as the '05 sti seats?

2)What is the difference between all the STI seats (V7,JDM,USDM)?

3)Are any of them made by Recaro? If not, who makes them?

4) If I get aftermarket seats, can I take use the sliders from the stock seats on the new seats?

5) I have amps under my current seats, will I be able to leave them there if I get aftermarket seats?
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Old 09-19-2005, 11:27 PM   #9
import111
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I would like to know which aftermarket seat lower the seating position the LEAST amount? I am 5ft 11in but I have a short torso and long legs. If my seat gets any lower I wont be able to see over the dash. But I need an aftermarket seat to hold me in. The JDM STi seats put you higher and I don't want that either.

Ryan
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Old 09-21-2005, 11:52 AM   #10
nate.the.great
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I am looking into upgrading my seats in my '05 RS...

Some questions about seats:

1)Are the '05 wrx seats, with the integrated head restraints, the same shape/fit as the '05 sti seats?

No, the USDM STi seats are better, but not as good as JDM Sti seats.

2)What is the difference between all the STI seats (V7,JDM,USDM)?

JDM seats make you sit higher than USDM seats, but they are compatible with aftermarket JDM brackets that sit very low. Also, JDM seats are much more supportive and comfortable than USDM seats. V6, V7, V8 just means which STi version the seats came out of. I hear that V7 seats are the best.

3)Are any of them made by Recaro? If not, who makes them?

None of those seats are made by Recaro. I don't know who makes them. haha, sorry. I think Recaro makes the stupid expensive Sti seats that cost like $2K for a pair. Those are extremely rare and is not in the regular JDM STi.

4) If I get aftermarket seats, can I take use the sliders from the stock seats on the new seats?

No.

5) I have amps under my current seats, will I be able to leave them there if I get aftermarket seats?

It depends on your amp and your seat. You'd have to take a look at the clearance.
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Old 09-21-2005, 11:53 AM   #11
nate.the.great
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Quote:
Originally Posted by import111
I would like to know which aftermarket seat lower the seating position the LEAST amount? I am 5ft 11in but I have a short torso and long legs. If my seat gets any lower I wont be able to see over the dash. But I need an aftermarket seat to hold me in. The JDM STi seats put you higher and I don't want that either.

Ryan
SPARCO makes two types of brackets, a flat bracket and a normal bracket. The flat bracket makes you sit very low in the car, and the normal bracket helps you retain the orriginal seating height.
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Old 09-21-2005, 11:59 AM   #12
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Quote:
1)Are the '05 wrx seats, with the integrated head restraints, the same shape/fit as the '05 sti seats?
No, the USDM STi seats are better, but not as good as JDM Sti seats.
The seats in my buddy's 05 STi are the same as my 04 WRX seats with the exception of the obvious.
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Old 09-21-2005, 12:07 PM   #13
nate.the.great
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I think they look the same, but when I sat in the STi, I felt like it was more heavily bolstered.
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Old 09-21-2005, 12:40 PM   #14
Hokie-wrx wagon
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Here's a small writeup I did. It also shows my seat base extensions for the flat sparco bases.

http://filebox.vt.edu/users/mbevels/...Mods/seats.htm
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Old 09-21-2005, 01:15 PM   #15
gharari
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Interesting mod you did to the seat brackets. I might have to do this too if I end up going with seats that drop the seat height. I am thinking that I may weld two of those bars together in order to retain more of the stock height. Nice job on your seats. Thay look great.

Do the sliders work like before? Did you retain the height adjustment? Is there a way to remove the stock brackets/sliders/height adjustment device from from the stock seats and reuse those on the Sparcos? Would that also drop the height?
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Old 09-21-2005, 01:16 PM   #16
gharari
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Any idea how much the Torrinos and stock seats weigh?
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Old 09-21-2005, 04:41 PM   #17
Hokie-wrx wagon
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Quote:
Originally Posted by gharari
Interesting mod you did to the seat brackets. I might have to do this too if I end up going with seats that drop the seat height. I am thinking that I may weld two of those bars together in order to retain more of the stock height. Nice job on your seats. Thay look great.

Do the sliders work like before? Did you retain the height adjustment? Is there a way to remove the stock brackets/sliders/height adjustment device from from the stock seats and reuse those on the Sparcos? Would that also drop the height?
I have sparco sliders. The seats slide forward and backward like normal, but there is no height adjustment. I don't think you can use stock seat bases without major modification or ruining the stock seats.

Mike
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Old 09-21-2005, 04:43 PM   #18
Hokie-wrx wagon
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Quote:
Originally Posted by gharari
Any idea how much the Torrinos and stock seats weigh?
Torinos weigh 32 lbs each. Not sure how much the stock seats weigh. The stock seats didn't feel ridicously heavy compared to the torinos with brackets, extentions, and sliders bolted on. They certainly hold me in better than the ultra-wide '05 wrx stock seats!

Mike
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Old 09-21-2005, 10:36 PM   #19
gharari
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cool. Thanks.
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Old 09-21-2005, 11:19 PM   #20
BoostinEJ20
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the spawn of unabomber! i like these very detailed FAQ's they make it easy to not get flamed! me likes...
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Old 09-21-2005, 11:58 PM   #21
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cool FAQ. i'll post more detailed info on the differences betw v7 and v8 JDM STi and v8 USDM STi seats when i get my car back...
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Old 09-22-2005, 12:06 AM   #22
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What seat dimensions will fit my GDB aka 2002+ Impreza?



no love for the GCs......AS USUAL!!
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Old 09-22-2005, 12:12 AM   #23
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stuck, thanks for the extra effort, its what makes this site so great!
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Old 09-22-2005, 01:07 AM   #24
import111
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Quote:
Originally Posted by bluestone
cool FAQ. i'll post more detailed info on the differences betw v7 and v8 JDM STi and v8 USDM STi seats when i get my car back...
How soon will this be. I am in a huge hurry to get new seats . I can get JDM V7 seats for a great price right now but I hear they raise the driving position level and I don't want that. Anyone know of a way to mod the V7 seats so they sit lower, about equal to USDM STi seats on their lowest setting?

Ryan
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Old 09-22-2005, 03:23 AM   #25
nate.the.great
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Yes, you can make JDM seats sit lower.

http://www.kansaiss.co.jp/html/carlineup/subaru/gdb.htm

KIF003 is for the JDM driver's seat (USDM passenger) and is $228.9.
KIF004 is for the JDM passenger's seat (USDM driver) and is $207.9.

Wow, not cheap...
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