DIY: Lower Tie Bar Braces (Rear)

Xaositek · 01-04-2009, 03:52 PM

This is a PARTIAL DIY on the GTSPEC Rear Lower Tie Bar Brace on a 2008 Si Sedan.

1.) Jack up the car utilizing the pinch-welds just forward of the rear tires. Do NOT jack off the tie bar braces as you will hate yourself forever. Also make sure to put some kind of block infront of the front tires AND put it in first. This should help eliminate the car wanting to roll forward.

2.) Remove the rear diffuser, this will include 3 of the Honda factory clips and 3 10mm bolts. WARNING:: I found a TON of little pebbles/road dirt had found their way up there, wear safety glasses

Here is the diffuser removed.

3.) Find the center points for the rear lower tie bar braces, they are pretty obivious but here is the image for reference.

4.) Using an impact (it sucks without one!!) loosen up the bolt until you have it completely unthreaded.

5.) After this point be ready for all hell to break loose, but here is how we figured to make it more managable. Using a block of wood as long as the lower tie bar, use a floor jack and put pressure on the lower tie bar, if you're too high or too low, the bolt will not easily pull out. After this pull out the bolt, put the brace on and push the bolt back in. Using a BFH give the bolt a couple good hits (otherwise it will not properly seat and the threads won't grab)

Don't torque the bolt down just yet, but make sure its pretty well threaded in.

Lower the jack and repeat on the other side. Sorry for the lack of pictures, we actually learned the hard way about putting the jack under the lower tie bar and it fell out, DON'T LET THIS HAPPEN!!

The rear diffuser will NOT fit back on with the tiny factory bolts, you will need something significantly longer for it to thread properly, but it will go back WITHOUT being cut or modified.

Make sure to get your alignment checked, especially if the brace moved at all.

buurner · 01-04-2009, 04:00 PM

Great Write-up I have a friend that let the back half down lol it took him forever to get it back in lol

a1j7g · 01-04-2009, 04:03 PM

Sweet good job! +1

joey.walla · 01-04-2009, 04:20 PM

QUestions

1) Notice any difference with this?

2) Did you put something in front of the front tires so the car didn't roll? I have to install a rear sway bar but don't want to jack up the front and back.

Thanks

Xaositek · 01-04-2009, 05:21 PM

Notice any difference? Yes I did - when I go into a corner with any amount of speed I can easily handle it without issues. Even with the factory suspension I noticed it helped. You will not notice it at all in a straight line, but when cornering the body rolls seems much less.

2.) Yeah I had a cinder block infront of the front tire - I'll toss that into the DIY now.

joey.walla · 01-04-2009, 10:56 PM

thanks bud.

**obert** · 01-04-2009, 11:23 PM

Nice,thanks for sharing.

07LXcoupe · 01-04-2009, 11:38 PM

I have a general question for every one with the rear lower tie bar.
Who has actualy put the under panel back on and who has left it off?
Has the people that left it off seen a change in gas mileage or do you guys think it wont make that much of a difference?

Xaositek · 01-05-2009, 08:01 PM

I left it on - used some new bolts and it fits without much effort. Its actually protecting the spare tire wheel from alot of road crap. It also keeps air from getting trapped inside the bumper cover and putting unneeded wear on the supports. The thing weights less then 2lbs and it takes two 15 cent screws to reattach.

Just my two pennies I'd always say put it back on, it was there for a reason.

vspecll · 02-18-2009, 01:30 AM

Quote:

Originally Posted by Xaositek

I left it on - used some new bolts and it fits without much effort. Its actually protecting the spare tire wheel from alot of road crap. It also keeps air from getting trapped inside the bumper cover and putting unneeded wear on the supports. The thing weights less then 2lbs and it takes two 15 cent screws to reattach.

Just my two pennies I'd always say put it back on, it was there for a reason.

what is the new length of the screws to put the rear diffuser back on ? thank you

B MAN · 12-30-2009, 05:40 PM

doing this soon

i just got an alignment today tho

u think i can really throw much off?

IceMurder · 12-30-2009, 10:46 PM

it won't throw off your alignment

IceMurder · 12-30-2009, 10:48 PM

Quote:

Originally Posted by 07LXcoupe

I have a general question for every one with the rear lower tie bar.
Who has actualy put the under panel back on and who has left it off?
Has the people that left it off seen a change in gas mileage or do you guys think it wont make that much of a difference?

i left my diffuser off. the bar looks sick from behind the car and i noticed absolutely no change in gas mileage, i've also had the bar on for over a year

B MAN · 12-30-2009, 10:52 PM

u can still see it even with the rear diffuser? pics?

IceMurder · 12-30-2009, 11:14 PM

no, i left my diffuser off. you can't see it if you reinstall your diffuser.

B MAN · 12-31-2009, 02:52 AM

is that safe?

***Huckleberry*** · 12-31-2009, 03:01 AM

yes.

it's a

y diffuser anyway.

IceMurder · 12-31-2009, 04:29 PM

Quote:

Originally Posted by B MAN

is that safe?

why would it be unsafe...it's a piece of plastic...

B MAN · 12-31-2009, 06:46 PM

Quote:

Originally Posted by Huckleberry

yes.

it's a

y diffuser anyway.

Quote:

Originally Posted by IceMurder

why would it be unsafe...it's a piece of plastic...

my wheel liner is just a piece of plastic, i take that off and next time it rains im in trouble

isnt that gas tank around there? i know it cant cover it, but whats there that might need protection from rain? is the metal underthere rust proof/resistant atleast?

IceMurder · 12-31-2009, 07:03 PM

actually if you took the wheel liner off it wouldn't make a difference, your engine would just get dirty. I've had my rear tie for a year now with no diffuser and everything under the car still looks fine if that helps any.

01-04-2009, 03:52 PM	#1 (permalink)
Xaositek Senior Member Join Date: Mar 2008 Location: Jefferson City, MO Age: 26 Posts: 291 Jason	DIY: Lower Tie Bar Braces (Rear) This is a PARTIAL DIY on the GTSPEC Rear Lower Tie Bar Brace on a 2008 Si Sedan. 1.) Jack up the car utilizing the pinch-welds just forward of the rear tires. Do NOT jack off the tie bar braces as you will hate yourself forever. Also make sure to put some kind of block infront of the front tires AND put it in first. This should help eliminate the car wanting to roll forward. 2.) Remove the rear diffuser, this will include 3 of the Honda factory clips and 3 10mm bolts. WARNING:: I found a TON of little pebbles/road dirt had found their way up there, wear safety glasses Here is the diffuser removed. 3.) Find the center points for the rear lower tie bar braces, they are pretty obivious but here is the image for reference. 4.) Using an impact (it sucks without one!!) loosen up the bolt until you have it completely unthreaded. 5.) After this point be ready for all hell to break loose, but here is how we figured to make it more managable. Using a block of wood as long as the lower tie bar, use a floor jack and put pressure on the lower tie bar, if you're too high or too low, the bolt will not easily pull out. After this pull out the bolt, put the brace on and push the bolt back in. Using a BFH give the bolt a couple good hits (otherwise it will not properly seat and the threads won't grab) Don't torque the bolt down just yet, but make sure its pretty well threaded in. Lower the jack and repeat on the other side. Sorry for the lack of pictures, we actually learned the hard way about putting the jack under the lower tie bar and it fell out, DON'T LET THIS HAPPEN!! The rear diffuser will NOT fit back on with the tiny factory bolts, you will need something significantly longer for it to thread properly, but it will go back WITHOUT being cut or modified. Make sure to get your alignment checked, especially if the brace moved at all. Last edited by Xaositek; 01-04-2009 at 05:22 PM.
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12-31-2009, 03:01 AM	#17 (permalink)
*Huckleberry* Join Date: May 2008 Location: Los Angeles Age: 26 Posts: 11,403 Jesse	yes. it's a y diffuser anyway. __________________ August 6, 1969 – October 21, 2003

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01-04-2009, 04:00 PM	#2 (permalink)
buurner Senior Member Join Date: Nov 2007 Location: Memphis,TN Age: 24 Posts: 1,904 Bottles	Great Write-up I have a friend that let the back half down lol it took him forever to get it back in lol

01-04-2009, 04:03 PM	#3 (permalink)
a1j7g Senior Member Join Date: Jan 2008 Location: Springfield, MO Posts: 1,503 Andy	Sweet good job! +1

01-04-2009, 04:20 PM	#4 (permalink)
joey.walla Senior Member Join Date: Aug 2008 Location: 4.5K in 6th Age: 22 Posts: 2,741 Joey	QUestions 1) Notice any difference with this? 2) Did you put something in front of the front tires so the car didn't roll? I have to install a rear sway bar but don't want to jack up the front and back. Thanks

01-04-2009, 05:21 PM	#5 (permalink)
Xaositek Senior Member Join Date: Mar 2008 Location: Jefferson City, MO Age: 26 Posts: 291 Jason	Notice any difference? Yes I did - when I go into a corner with any amount of speed I can easily handle it without issues. Even with the factory suspension I noticed it helped. You will not notice it at all in a straight line, but when cornering the body rolls seems much less. 2.) Yeah I had a cinder block infront of the front tire - I'll toss that into the DIY now.

01-04-2009, 10:56 PM	#6 (permalink)
joey.walla Senior Member Join Date: Aug 2008 Location: 4.5K in 6th Age: 22 Posts: 2,741 Joey	thanks bud.

01-04-2009, 11:23 PM	#7 (permalink)
obert Admin Ninja Join Date: May 2005 Posts: 4,294,967,295 obert	Nice,thanks for sharing.

01-04-2009, 11:38 PM	#8 (permalink)
07LXcoupe Senior Member Join Date: Jan 2007 Location: Cape coral Age: 23 Posts: 606 Tony	I have a general question for every one with the rear lower tie bar. Who has actualy put the under panel back on and who has left it off? Has the people that left it off seen a change in gas mileage or do you guys think it wont make that much of a difference?

01-05-2009, 08:01 PM	#9 (permalink)
Xaositek Senior Member Join Date: Mar 2008 Location: Jefferson City, MO Age: 26 Posts: 291 Jason	I left it on - used some new bolts and it fits without much effort. Its actually protecting the spare tire wheel from alot of road crap. It also keeps air from getting trapped inside the bumper cover and putting unneeded wear on the supports. The thing weights less then 2lbs and it takes two 15 cent screws to reattach. Just my two pennies I'd always say put it back on, it was there for a reason.

12-30-2009, 05:40 PM	#11 (permalink)
B MAN Senior Member Join Date: Mar 2008 Location: Hempstead NY Age: 25 Posts: 31,512 Brian	doing this soon i just got an alignment today tho u think i can really throw much off?

12-30-2009, 10:46 PM	#12 (permalink)
IceMurder Senior Member Join Date: Jul 2008 Location: Greensboro, NC Age: 25 Posts: 2,497 Chris	it won't throw off your alignment

12-30-2009, 10:52 PM	#14 (permalink)
B MAN Senior Member Join Date: Mar 2008 Location: Hempstead NY Age: 25 Posts: 31,512 Brian	u can still see it even with the rear diffuser? pics?

12-30-2009, 11:14 PM	#15 (permalink)
IceMurder Senior Member Join Date: Jul 2008 Location: Greensboro, NC Age: 25 Posts: 2,497 Chris	no, i left my diffuser off. you can't see it if you reinstall your diffuser.

12-31-2009, 02:52 AM	#16 (permalink)
B MAN Senior Member Join Date: Mar 2008 Location: Hempstead NY Age: 25 Posts: 31,512 Brian	is that safe?

12-31-2009, 07:03 PM	#20 (permalink)
IceMurder Senior Member Join Date: Jul 2008 Location: Greensboro, NC Age: 25 Posts: 2,497 Chris	actually if you took the wheel liner off it wouldn't make a difference, your engine would just get dirty. I've had my rear tie for a year now with no diffuser and everything under the car still looks fine if that helps any.

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