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post #1 of 7 (permalink) Old 08-05-2009, 02:26 PM Thread Starter
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Suspension Package and Usage

I have been asked by several people to clarify which parts make up which of the suspension levels. Here is a compilation of this information, with spring rates and loads.

I hope people understand what a check height and check load mean for a spring. The check height is not the same spring length as any particular loading.

Some definitions:
LE5 = Base naturally aspirated 2.4l engine
LNF = 2.0l turbo SIDI
SDT = Street Edition
FE2 = the option code for the base suspension
FE3 = option code for uplevel suspension

You will notice that the SKY LE5 front spring has a higher load. In general, the SKY is slightly heavier due to option content, differences in structural mass, etc. and requires a slightly higher load spring to keep the trim height in specification.

Code:
Application				Front Spring 				Rear Spring
			Frt Shock	(chk ht. = 		Rear Shock	(Chk ht. = 	
					211.5mm)				217.5 mm)
=====================================================================================================

FE2 LE5 Solstice	15278695*	15244327		15278696*	15280026
2006 MY			Code 9??*	(3600N - 22.5 N/mm)	Code 9??*	(3700N - 31.0 N/mm) 	
					[Tag = Lt Grn]				[Tag = Tan]
=====================================================================================================
FE2 LE5 Solstice	15224875	15244327		15236924	15280026
2007+MY			Code C404	(3600N - 22.5 N/mm) 	Code C406	(3700N - 31.0 N/mm) 	
					[Tag = Lt Grn]				[Tag = Tan]	
=====================================================================================================
FE2 LE5 SKY		15224875	10376421		15236924	15280026
			Code C404	(3800N - 22.5 N/mm) 	Code C406	(3700N - 31.0 N/mm) 	
					[Tag = Dk Grn]				[Tag = Tan]	
=====================================================================================================					
FE3 LNF (Non Z0K)	15901220	15784872		15901221	25787858
(All Non-Z0K LNF Kappa)	Code C646	(3800N - 30.5 N/mm) 	Code C648	(3900N - 40.0 N/mm)	
					[Tag = Brown]				[Tag = Purp Stripes]	
=====================================================================================================
LE5 Z0K Solstice	15901220	15906534		15901221	15906532
also Street Ed. SDT	Code C646	(3100N - 30.5 N/mm) 	Code C648	(3250N - 40.0 N/mm) 	
					[Tag = Lt Grn Stripes]			[Tag = Lt Blu Stripe]	
=====================================================================================================
LNF Z0K Solstice	15901220	25849163		15901221	25855626
			Code C646	(3100N - 37.0 N/mm) 	Code C648	(3200N - 50.0 N/mm)	
					[Tag = Orange Stripes]			[Tag = Yellow Stripe]	
=====================================================================================================
GM SPO Perf Parts	88965295	88965293		88965296	88965294
			Code C388	(3450N - 37.0 N/mm)	Code C390	(3350N - 50.0 N/mm)	
					[Tag = White]				[Tag = Lavender]	
=====================================================================================================

* The 2006 Solstice had a different shock valving and shorter jounce bumper with a different rate progression.
The 2007 FE2 SKY, introduced early 2006, had a revised jounce bumper and a better shock valving to work with the new jounce bumper.
This was well-received, so the changes were rolled into the FE2 Solstice in 2007 model year and parts commonized.
The 2006 shocks are not available in service, both old and new jounce bumper are available in service.
2006 Solstice are all FE2 and all have the 15159045 jounce bumper.  All 2007+ kappa have the 15823830 Jounce bumper.


			Front 		(2) Frt		Rear		(2) Rear 
			Stab Bar	Insulator	Stab Bar	Insulator
===================================================================================================
FE2 LE5			10342785	15887219	10342786	10340104
			27.2 x 4.5mm	27.2mm		24.2 x 3.0mm	24.2mm
===================================================================================================
FE3 LNF Non-Z0K		15224873	25789241	15224878	15224881
& LE5 Z0K		33.3 x 4.5mm	33.3mm		25.4 x 3.0mm	25.4mm
& SDT (street edition)
GM SPO Perf Parts							
===================================================================================================
FE3 LNF Z0K		25855621	25789241	25855622	25855624
			33.3 x 6mm	33.3mm		27.2 x 6mm	27.2mm
									Also needs
									25855624 clamps
===================================================================================================
I also added it as a txt file.

The shocks have a sticker on them with a code. Springs usually have a tag that is a specific color and has the part number of the spring on it.

Also, keep in mind that the Z0K (both LE5 and LNF versions) are built with two spring seats. Out of the factory, the trim height is within specification with both spring seats, which was necessary due to several areas in the assembly plant that prevented a lower car from getting through the system, as well as shipping limitations at the intended ride height. It is up to the owner to remove this 2nd spring seat/spacer to set the car to intended carrying height. This option was lower cost when compared to other options, such as lifts and/or disposable spring stuffers.

You will also notice that the same shock is used for the LNF Z0K as is used for the lower spring rate cars. This shock is not fully optimized for these higher spring rates, and the GMPP shocks will be closer but oriented toward heavier rebound damping than is necessary for the increased spring rate, and significantly tighter bypass (bleed), which is typically more desirable for autocrossing vs. street usage or road racing. It is assumed that anyone buying an LNF Z0K for T2 or serious AS autocross would be replacing stock shocks, no matter how they are tuned, with their own choice in Penskes, Olins, Konis or other racing or adjustable shocks.

This is the ongoing discussion over at Solsticeforum. Suspension Packages and Usage - Pontiac Solstice Forum
Attached Files
File Type: txt FieldPartNumberIDSuspension.txt (3.5 KB, 525 views)

I am a GM Engineer.

I do not claim to be a GM rep., all of my postings are my own interpretation and personal opinions.

I am a proud Solstice GXP owner (Flash). My wife, A FORMER GM engineer, is a proud Solstice GXP Coupe owner (Wicked).
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post #2 of 7 (permalink) Old 08-05-2009, 05:16 PM
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Wow.....this is SO cool. Thanks for giving us this info! I've already saved the text file so I don't lose it.

2006 Deep Solstice NA...Traded in for:
2009 Sky Redline Ruby Red Limited Edition
5 speed manual/rear spoiler added/6 disc/Monsoon
GMPP Tune/MBRP Charge Pipes/DDM Backbone & Probeam/K&N Drop in/HIDs
*Thank You Bob Lutz* And Wilmington UAW 435
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post #3 of 7 (permalink) Old 04-01-2010, 02:15 PM
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great job

I just printed this out to provide data to figure out which spring and which shock gotogether from 4 I bought all loose! Great.

Scott
================
'12 Kia Optima SX GDI turbo
'07 Custom Blue RL conversion, Auto (project - not running yet but working on it)
'06 Honda Odyessy EX-L minivan
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post #4 of 7 (permalink) Old 08-11-2010, 10:28 AM
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I have a question in reguards to the "two spring seats". If i understand this correctly can we can lower the car to the second seat? and if so is there a thread to help?
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post #5 of 7 (permalink) Old 01-02-2012, 08:18 AM
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so according to this the only differences between the rl and gxp zok are the front springs and rear sway bar diameter?

GM Stage 1 Tune|Solo Street Race Exhaust With Magnaflow Mufflers|GMR 8K HIDs|Parking Light Leds|License Plate Leds|Little Chromies|3rd Brake Light Vinyl:REDLINE|GMR Pulsating and Sequential Taillights|
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post #6 of 7 (permalink) Old 05-08-2012, 04:55 AM
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that's an nice stuff it would help me a lot thanks for the stuff.
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post #7 of 7 (permalink) Old 08-27-2013, 10:33 PM
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Reading the Pontiac Solstice Performance book How to Go Fast and Have fun. Page 79 lists ZOK parts, I see there is a listing for front and rear lower control arms. Are there different lower control arms when converting a FE3 to ZOK? The part numbers are 15224867/68 and 15224779/80

2007 (2.4L)
Solo Cat
Magnaflo Redline dual exhaust
Werks Turbo @ 10 PSI
FE2 shocks
KappaSphere coil springs and rebar
ZOK anti-sway bars
DDM Works Latin Venom front brace, Pro Beam, Racing Back Bone
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