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Cadillac Forums: Can't wait!!!
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  #21 (permalink)  
Old 04-21-08, 11:39 PM
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Re: Can't wait!!!

Well it finally got warm and i installed the suspension components.
Front
-Bilstein struts re-valved (or custom ordered) by Steinmetz
-Steinmetz lowering springs (i believe might be eibach)
-Steinmetz (made by OZ) rims 18X8.5 +30mm offset
-Continental contisportcontact 235/40ZR18
Rear
-Omega V8 station wagon Shocks, unfortunately the rear Steinmetz shocks were bent. The air ride is still functional
-Steinmetz rear springs
-Steinmetz 18X10 +31mm offset
-continental contisportcontact 265/35ZR18

The suspension and rims are from the orange GM/Steinmetz Catera Prototype
The road manners: Unfortunately the sport suspension i removed was very old and worn out so i can only compare to my memory of how the car was when i got it. it seems the new suspension is only slightly stiffer then sport but it has reduced body role giving more confidence through long fast curves. Friends who have been in the car were pleasantly surprised that their teeth were not shattered.
All in all i think this suspension is perfect for the daily driver who on occasion likes to drive spiritedly.

Unfortunately Steinmetz has discontinued the suspension package however there is still hope. I believe if you get the bilstein struts/shocks and eibach springs (still available) it would probably match the Steinmetz kit very closely.

V8 conversion update:
I bought a bunch of the 'little items that add up' things like a gasket kit for the engine (cam swap essentials), corvette fuel filter/pressure regulator, oil pick up tube and some other stuff. On my next trip to the US i'll be going to jegs to pickup a few goodies and then i'll be ready to put the cam into the motor.
I also bought some 6061 aluminum and brought it to a friend of a friend who has a small machine shop, so i should have my caliper brackets soon.
If all goes well about middle of may i will be tying out some ideas for bushings and swaybars, my ideas are very cost effective and much better then stock (should also last longer and be wayyyyyyyy cheaper to rebuild if you still have the car in 20 years lol)

Anyways I’ll stop blabbering and show you some pictures


Front Struts and springs
Less coils = stiffer

Rear springs
Smaller diameter = stiffer
Both my factory coils broke on the small bottom coil, i believe it to be because the coil thickness thins out towards the bottom and can’t cope with the forces over many years. The steinmetz coil i have has the same thickness throughout, should last many years.
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Old 04-22-08, 12:11 AM
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Re: Can't wait!!!

So what kind of drop did you see with those springs... I was thinking that it will be in the neighborrhood of around 30mm but it could be more... Do you have any issues with tires rubbing because as I can see those are really wide in the rear... I am running a 245 tire in the back with a 12mm offset and they come pretty close but no issues so far...
The fronts are just right on mine...
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Old 04-22-08, 02:46 AM
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Re: Can't wait!!!

No rubbing at all, lots of clearance. When these tires wear out I’m planning on going with 275 in the rear and 245 in the front. I’ve gone around some fast corners and gone over some big bumps and all tires are fine, no scars on the sidewalls no rubbing sound. I didn’t measure before and after because my driveway is uneven and results would be off. 30mm is about right, as you can see there is still plenty of ground clearance and speed bumps are not something I need to avoid.
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  #24 (permalink)  
Old 04-22-08, 07:35 AM
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Re: Can't wait!!!

The car is looking good. Love those wheels. Glad to hear the V8 project is progressing. We can't all be as lucky as you and use genuine Catera Concept parts on our cars. The following is a list of substitutes for the Steinmetz pieces. Some are upgrades, some OE replacements. The links are informational only. Shop around for the best prices. I limited this to springs, struts, and shocks. I have added to my list of bushings and will post it if anyone wants.

Intrax Lowering Springs: Part # INT-25-1-001
http://store.summitracing.com/partde...%2D001&FROM=MG
Lower the car 1.6 inch (40.6mm) front and 1.4 inch (35.5mm) rear.

VOGTLAND Lowering Springs: part # 955120
http://vogtlandsuspension.com/p71/Ca...duct_info.html
Lower the car 1.2 inch (30mm) F&R.

Eibach Lowering Springs: part # E-6532-140
http://www.eibach-uk.com/
Lower the car 1.2 inches (30mm) F&R.

Koni Sport Struts & Shocks:
-Sport Strut: part # 8610-1315Sport (insert in OE strut; externally adjustable for rebound)
-Sport Shock: part # 80-2591Sport (non-air, must disable self leveling; rebound adjustment made before installation)
http://store.summitracing.com
Struts & Shocks: Sport ride.

KYB GR2:
-Strut: # 334903
-Strut Mount: part # SM5285
-Shock Mount: part # SM5287
-Strut Boot & Bumpstop: part # SB101
http://www.shockwarehouse.com/index....cted_year=2001
Strut only. OEM ride. No adjustments.

Monroe:
Sensatrac Strut: part # 71503 (Twin-tube low pressure gas unit similiar to OEM)
Max-Air Rear Shocks: part # MA825 (For use with self leveling)
Upper Mount: part # 903932
Front Boot & Bumpstop: part # 63619
http://www.shockwarehouse.com/index....cted_year=2001

ACDELCO Strut: part # 506592 {#09192250} Right / # 506591 {#09192249} Left
http://www.rockauto.com/
Factory Replacement w/o SPORT APPEARANCE PKG (RPO-TV5)

ACDELCO Strut: part # 506594 {#09192292} Right / # 506593 {#09192291} Left
http://www.rockauto.com/
Factory Replacement w/SPORT APPEARANCE PKG (RPO-TV5)

ACDELCO Part # 560227 {#72119084}
ABSORBER,RR SHK w/o SPORT APPEARANCE PKG (RPO-TV5)
http://www.rockauto.com
Factory Replacement - Catera

ACDELCO Part # 560228 {#72119087}
ABSORBER,RR SHK w/SPORT APPEARANCE PKG (RPO-TV5)
http://www.rockauto.com
Factory Replacement - Catera Sport

Gabriel Ultra Strut: part # G56769
http://www.gabriel.com
OE replacement

NOTE: The following rear shock absorbers are for the 2004 Pontiac GTO. Owners who have used them assure me they will fit. Try at your own risk. GTO front struts will not fit. Front & Rear springs will fit.

MONROE SENSATRAC Rear: part # 5786
ACDELCO Rear Shock: part # 560595 {#92157266}
http://www.rockauto.com/catalog/raframecatalog.php
OE Replacements for 2004 Pontiac GTO. Non-air; Not adjustable.

Elvin

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Old 04-22-08, 02:05 PM
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Re: Can't wait!!!

Thanks for the compliment.
Anyone here could have had the rims and suspension. The auctions were posted on this forum and I was amazed to be the only one to bid on the rims and one other person bid on the suspension. unfortunately i had competition for the eibach swaybars and lost that auction.

Can add these Bilstiens (B4, B6, B8) to your list, you can find them for sale on uk or German ebay they are usually less then 1/2 the price of Konis and perform just as well (you just aren’t able to adjust them).
http://www.carparts-cat.com/pkw/part...1&NID=0,11,121

Also if you want to spend a good chunk of money KW makes a coilover kit for the omega
http://www.kwsuspensions.de/uk/30_Pr...pe=all&zeile=8

In my opinion Koni, Bilstein and KW are the only options for performance shocks the rest are stock replacement (or softer then stock) and expect to replace them more frequently.
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Old 04-22-08, 02:22 PM
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Re: Can't wait!!!

You should take some side pics so we can compare...
My CS has about 2fingers maybe a little over 40mm to the edge of the fender with teh 18s on there... so I wonder if I drop 30mm that is gonna rub for sure...



Ohhh and BTW I was the other person that was trying to get the suspension but I couldn't decided if I wanted it or not... I like the way mine rides and I didn't want to have another stiff car... I already have a Track car that will rattle your teeth filings off... so this is my luxy ride... I was thinking about a KW set up and thats what I am saving money for...


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Old 04-22-08, 10:17 PM
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Re: Can't wait!!!

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Old 05-31-08, 11:47 AM
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Re: Can't wait!!!

Not too much to update but there is some progress being made.
The other week I pulled the engine out of the garage and did a mock up of all the conversion parts required to install the engine.


I also got the bigger brakes installed on the car and they work great!
Front
-13.1” omega V8 rotor
-C6 Corvette Z51 caliper


Rear
-12” Omega V8 rotor
-Omega V8 2 piston caliper


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Old 05-31-08, 08:04 PM
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Re: Can't wait!!!

Wow, the brakes fit just fine, I bet you can tell the improvement in power... the only thing that puzzles me is how on earth do you have a sport catera, and a non vented rear brakes... mine has the same exact set as the one you upgraded to, not sure about the size but a similar looking caliper and vented rotors...

Also for the fronts did you use the corvette calipers on the GTO brackets? or did you actually use the Corvette supplied brackets? I was looking at those at one point and I was told you had to drill out the holes to fit those calipers on the GTO brackets...

Other then that the car is looking stunning, Im jealous, and I am seriously considering dropping mine...it will look so sexy lowered...
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Old 05-31-08, 11:11 PM
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Re: Can't wait!!!

From what I understand, the vented rear discs were a mid-production change. Not all 2001 Sports got them. All the 2002 Cateras would have. MyOpel's, car must have been built early in the production run. Opel probably used the remaining stock of solid discs before installing the venteds.

My car didn't get the vented discs either. I'll upgrade later. Most of the brake power is up front anyway. I'd get the vented rears only for bragging rights. Dimpled & slotted to match my fronts too. Can't have you guys have all the good stuff.

Elvin

MyOpel: I assume the rear calipers are wider for the vented discs, right? Do you have The part number?


Last edited by elvin315; 05-31-08 at 11:23 PM.
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