Installing rear seat braces

87gninpa · 10-24-2004, 01:54 AM

i just got a set today, but there were no directions or bolts with them. Fisrt of all, what size bolts do i need to install them?> second, anyone have the instructions??? if someone could maybe scan them and email them to me i would greatly appreciate it

salvageV6 · 10-24-2004, 09:56 AM

Are they Kirbans? Kenne-Bells? Homemade?

Usually the largest bolt that fits cleanly through the holes will work fine, probably 5/16" stainless would work well, 3/4" to 1" length most likely.

northerngn · 10-24-2004, 10:49 AM

i got postons
came with everything
weird
ill post a pic

motorhead · 10-24-2004, 10:57 AM

IIRC you need to jack the car up (at the frame) when you install them... it unloads the chassis. And everything will tighten up when it is dropped down again.

Grumpy · 10-24-2004, 11:32 AM

was a no brainer for me ... BUT hey I am smart

87gninpa · 10-24-2004, 11:53 AM

Do you have to drill the holes or are they already there? if they need to be drilled, is there an exact spot to drill in, or wherever they fit together on my car???

northerngn · 10-24-2004, 03:33 PM

87gninpa · 10-24-2004, 08:32 PM

thanks for the pic, what size holes did you drill? and whats the best way to remove the back seat?

dyermullet · 10-25-2004, 02:26 AM

Did you buy those? It looks like I could just make those out of some conduit or something

PhillyTurboSix · 10-25-2004, 07:30 AM

Quote:

Originally posted by 87gninpa
thanks for the pic, what size holes did you drill? and whats the best way to remove the back seat?

Real easy.. Find hardware (nuts and botls) that fit the holes in the braces you have. Look at the above few pics to get an idea on how long they need to be... Then get in the car and pop out the lower part of the back seat. Then you'll need a hex or star socket the size for seat belt bolts. There are 2 of them in each corner under the top half of the back seat. Remove them. Take out upper part of back seat ( check behind back of back seat for broadcast sheet! If found carefully take it out and have it laminated

) Then there is the big heavy matt that will pop out if your careful with it. Now everything is exposed look at the above pics again eyeball up your hole drill from the inside out and bolt em up. Takes a little time but a no brainer. Good luck!

Steve Wood · 10-25-2004, 09:15 AM

As Mike stated...the frame should be supported by four jack stands and should be in a parallel frame to a level floor.

If these are a commercial kit, there should be two holes in one of the bar ends as per Grumpy's picture (top center). This is important as it stops any potential scissoring.

The holes should be drilled such that the bolts are a snug fit with no wobble. Locking washers and threadlocker should be used and they should be tightened securely.

Push in at the lower edges of the back seat at the floor and lift up to remove the bottom half of the seat. Remove the two bolts at the bottom that hold the upper half in place and lift up on the seat to unclip it at the top.

Steve V · 10-25-2004, 07:40 PM

This maybe a stupid question,but what if you don't jack up the car and install it anyway? Seems like it would still stiffen up the car.

PhillyTurboSix · 10-25-2004, 08:52 PM

Steve V : I did not jack my car up to install them. The results were amazing still. I have a t-top car as well..

Steve Wood · 10-25-2004, 10:39 PM

Quote:

Originally posted by Steve V
This maybe a stupid question,but what if you don't jack up the car and install it anyway? Seems like it would still stiffen up the car.

Many don't want to go to the bother...it still stiffens up the car, but, it may have the frame tweaked which can diminish the over all handling of the car as the weight distribution is changed a bit.

87gninpa · 10-26-2004, 01:01 PM

Is there an exact placement for the braces?? i got them in and the ones that bolt together at the top are exactly as the pic showed, but i put the lower ones in a little higher from the bottom than the pis shows. i still notice a difference in the car, but should this be corrected or is it ok?

10-24-2004, 01:54 AM	#1 (permalink)
87gninpa Registered User Join Date: Jan 2004 Posts: 824	Installing rear seat braces i just got a set today, but there were no directions or bolts with them. Fisrt of all, what size bolts do i need to install them?> second, anyone have the instructions??? if someone could maybe scan them and email them to me i would greatly appreciate it

10-24-2004, 10:49 AM	#3 (permalink)
northerngn MASTER GM TECH Join Date: Sep 2003 Location: North Branch, MN Posts: 676	i got postons came with everything weird ill post a pic __________________ 87 gn motor out for a freshen up after 100k miles te45a,75's delphi injectors,max effort-R with target airfuel via wideband,3.5 thdp,3in single with magnaflow muff,275/50/15 nittos555-R,adj fuel reg,cottons 4in air inlet kit,rjc frontmount,and plate,metco driveshaft loop,big rear bar,warbro340w/hotwire,art carr 19930 3500 non lu, and built trans

10-24-2004, 10:57 AM	#4 (permalink)
motorhead aka: mOtOrHeAd MiKe Join Date: Jan 2002 Location: Orangeville, Ontario Canada Posts: 4,496	IIRC you need to jack the car up (at the frame) when you install them... it unloads the chassis. And everything will tighten up when it is dropped down again. __________________ [1987 Monte Carlo Super Slow\|1991 Z28 Slothmaro\|2002 B4C Crapmaro\|2007 TrailBlazer AWD Super ] [1987 Turtle Buick] High-Mileage 3.8L (Stock), MAFT Pro, Caspers PnP Harness, Extender Pro, LC-1, PowerLogger, PowerPlate, Garrett T63e, Low-Z 83s, Modified International Semi FMIC, MPE 3" DP, 4" Single Exhaust w/Magnaflow, Dual In-tank Pumps, ProPain Injection, Built 200-4R w/3000 Stall, 8.5" w/Welded Axle Tubes & 3.08s, Tubular UCAs & Boxed LCAs F&R, 36mm 1LE & F41 Swaybars, KYBs, 800lb/in & 200lb/in Springs, Ronal R15 17x9.5s w/275/40s & 325/45 M&H Drag Radials & an HKS Turbo Timer... Just scratching the surface. I Brake For ZR1s Parts For Sale!

10-24-2004, 11:32 AM	#5 (permalink)
Grumpy Registered User Join Date: Sep 2000 Location: Andover, Ma Posts: 11,024	was a no brainer for me ... BUT hey I am smart Attached Thumbnails __________________ Dan dont run your mouth if you cant run your car 86/87 GN and 89 TTA .. tons of parts !! Time to get out! Stuff has to go !!! Otherwise I am cutting it up and throwing it away email ttastage2@yahoo.com

10-24-2004, 03:33 PM	#7 (permalink)
northerngn MASTER GM TECH Join Date: Sep 2003 Location: North Branch, MN Posts: 676	here Attached Thumbnails __________________ 87 gn motor out for a freshen up after 100k miles te45a,75's delphi injectors,max effort-R with target airfuel via wideband,3.5 thdp,3in single with magnaflow muff,275/50/15 nittos555-R,adj fuel reg,cottons 4in air inlet kit,rjc frontmount,and plate,metco driveshaft loop,big rear bar,warbro340w/hotwire,art carr 19930 3500 non lu, and built trans

10-24-2004, 09:56 AM	#2 (permalink)
salvageV6 Registered User Join Date: Sep 2000 Location: Connecticut, USA Posts: 6,388	Are they Kirbans? Kenne-Bells? Homemade? Usually the largest bolt that fits cleanly through the holes will work fine, probably 5/16" stainless would work well, 3/4" to 1" length most likely.

10-24-2004, 11:53 AM	#6 (permalink)
87gninpa Registered User Join Date: Jan 2004 Posts: 824	Do you have to drill the holes or are they already there? if they need to be drilled, is there an exact spot to drill in, or wherever they fit together on my car???

10-24-2004, 08:32 PM	#8 (permalink)
87gninpa Registered User Join Date: Jan 2004 Posts: 824	thanks for the pic, what size holes did you drill? and whats the best way to remove the back seat?

10-25-2004, 02:26 AM	#9 (permalink)
dyermullet Registered User Join Date: Feb 2004 Location: INDIANA Posts: 293	Did you buy those? It looks like I could just make those out of some conduit or something __________________ 87 WE4 - Nice Weather Fun 95 Chevy 1500 350 5speed 2wd 91 Ford Mustang LX 5.0L

10-25-2004, 09:15 AM	#11 (permalink)
Steve Wood An American American Join Date: Sep 2000 Location: East of Eden, Texas Posts: 36,764	As Mike stated...the frame should be supported by four jack stands and should be in a parallel frame to a level floor. If these are a commercial kit, there should be two holes in one of the bar ends as per Grumpy's picture (top center). This is important as it stops any potential scissoring. The holes should be drilled such that the bolts are a snug fit with no wobble. Locking washers and threadlocker should be used and they should be tightened securely. Push in at the lower edges of the back seat at the floor and lift up to remove the bottom half of the seat. Remove the two bolts at the bottom that hold the upper half in place and lift up on the seat to unclip it at the top. __________________ ------------------ 'A government that is big enough to give you everything you want, is also big enough to take away everything you have.' - Thomas Jefferson I think one should worry more when people are lining up to get out of a country rather than into it. If they're sneaking in, we must be doing something right. The Chronicles of Zap, from the early 21st century www.vortexbuicks-etc.com

10-25-2004, 07:40 PM	#12 (permalink)
Steve V Registered User Join Date: Jul 2003 Location: Virginia Beach VA Posts: 1,869	This maybe a stupid question,but what if you don't jack up the car and install it anyway? Seems like it would still stiffen up the car. __________________ 86 GN RIP 1-29-2004,totaled my fault...my baby. 86 T top GN NASH II,Sold. 86 T stock ,SOLD. 87 White pearl Turbo T ,fresh rebuild ,wifes new toy! 87 GN bonestock!!55,900 miles 1 owner!!Freshly rebuilt. 87 GN 119k newest project. I fix TR's 757 560 2782 http://svaillancourt.photosite.com/

10-25-2004, 08:52 PM	#13 (permalink)
PhillyTurboSix cRaCk wH0rE Join Date: Nov 2003 Location: Phila, PA Posts: 3,980	Steve V : I did not jack my car up to install them. The results were amazing still. I have a t-top car as well.. __________________ Jim C Pennsylvania State Representative for MAGNA 87 Grand National T-tops, late build, with low options. Rebuilt 109 block.. All the basic mods ,some goodies, and alot of shiney stuff. Featuring Razor's famous Alky kit and TurboTweak chip! 86 Grand National Astroroof - One sexy stocker! 89 Turbo Trans Am #396 Garage Princess. Stock 30K original Featured in Hemmings Muscle Machines. Feb. 06 http://turbobuicks.net/ NEW pictures here! http://turbobuicks.net/gallery2/v/Philly/

10-26-2004, 01:01 PM	#15 (permalink)
87gninpa Registered User Join Date: Jan 2004 Posts: 824	Is there an exact placement for the braces?? i got them in and the ones that bolt together at the top are exactly as the pic showed, but i put the lower ones in a little higher from the bottom than the pis shows. i still notice a difference in the car, but should this be corrected or is it ok?

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