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Front suspension

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Front suspension

Post by a2ndopinion on Fri Mar 15, 2013 9:59 am

My wagon already handles like a slot car and pisses off most of my friends with Celicas, especially those with 3rd gen GT-Ss (IRS), but I'm about to up the ante with the following. All of the front end bushings (LCA, sway bar frame and end links, torsion bars and motor mount) have been upgraded to urethane. If you want to follow along with some of the mods as they progressed, you can refer to this link:
http://www.celica-gts.com/forums/index.php?topic=16360.0

Here's the latest (and almost last) pieces for the front end - arrived yesterday - Roll Center Adjusters and Strut Bearing Camber/Caster Plates from T3 (Techno Toy Tuning) and yes, those are my ASE certs - Master Auto, Master Truck, Master Machinist and Master Autobody, Consultant, Parts Specialist, Undercar and Estimator:


Picked up from my machinist buddy (who also built the boxed control arms and strut tubes) yesterday while on business in Eugene, OR - lucky job assignment, to be used as strut bearings - what he refers to as "you hum" - UHMW - http://en.wikipedia.org/wiki/Ultra-high-molecular-weight_polyethylene


Still waiting on, also from T3, coilover spring hats to go with their camber/caster plates - ordered last Friday, hoping for arrival today:


All of this is to go with the current (and some recent) front end mods. Those are Mk II Supra (MA60) strut tubes, shortened for MR2 SW20 (rear) AGX 4-way adjustable struts and boxed 3rd gen Celica (RA64/65) lower control arms (LCAs). I also have an Addco Mk II Supra front sway bar (28.5mm) - factory was like 22mm, 3rd gen Celica upgrade was 24.21mm, factory Supra was 25.39mm. I have also upgraded the better Mk II Supra/3rd gen Celica front brakes to '87-'88 Cressida rotors and pads, which have been upgraded to Brembo blank rotors and KVR pads.
Added two weeks ago:



Big Brake Upgrade info:
http://www.celica-gts.com/forums/index.php?topic=22530.0

Corona bar compared to 3rd gen Celica bar:

Addco bar compared to factory Mk II bar:


Cressida rotors compared to Mk II Supra/3rd gen Celica rotors:


The strut tubes replace what were OE tubes that simply had had coilover collars slid over them:


The last piece still needing to be manufactured and added:


Then it is time to get the rear end in-line. I have a Mk I Supra ('79-'81) SRA 3.90 geared LSD disc brake diff almost ready to go in (cut the factory four-link mounts off, need the new leaf spring perches welded on), and have a shortened truck (bigger U-joints) one-piece drive shaft for it. I have urethane bushings to mount the leaf springs with as well. The rear end has already been upgraded by removing two factory leafs and adding a Hilux overload leaf upside-down, which really stiffened it up and lowed it quite nicely.
Two out, one in:





And what I think will be the last piece to add to the suspension, a "Wish bone" or "A-arm" - It acts like a Panhard Bar, Watts Link, etc, but if mounted in line with the leafs will also act as traction bars. At that point, I don't think it will need a rear sway bar. Like this pic, but underneath:

_________________

ASE certified: Master Auto, Truck, Machinist & Collision Repair/Refinish Tech/Damage Estimator, Undercar & Parts Specialist, Service Advisor; Oregon Certified Vehicle Appraiser
DD -'81 Corona wagon - 22R hybrid P&P, Crane stage 3, Si valves, Erson springs/retainers, Weber, Cannon, MSD, Thorley, Borla, 3rd gen Celica front suspension, Cressi Big Brakes, coilovers, Camber plates, RCAs, AGXs, Addco, all urethane bushings, Hilux leafs...
20/22R/RE & Celica Guru, 2nd & 3rd gens - GT-Ss - 'vert, coupes & liftback... & Chevy fanatic
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Re: Front suspension

Post by a2ndopinion on Sat Mar 16, 2013 12:33 pm

Oh - and a word of warning when placing an oreder with T3... I was sofa king pissed off yesterday... I ordered spring hats last Friday, 03/08/13, and then ordered the RCAs and camber plates on Tuesday, 03/12. I placed the first order online, but called in the second order directly to Gabe. He pulled up my first order and used that info to process the second. When the first order went through, I got notification that it was being sent out USPS. I got notification that the second order was being sent out FedEx. The second order got here on Thursday. I figured the first order would be here by yesterday (Friday), but when it wasn't, I called. I spoke to the Mrs, and she said that they only send out USPS once a week, on Friday, and my first order was too late to go out last week, so was sent out today (yesterday - Friday)! Why the F wasn't it added in with the second order? Jesus Christ! Gabe even looked up my first order to place the second order!
So now I have to wait until sometime next week to put the camber plates on!!!

_________________

ASE certified: Master Auto, Truck, Machinist & Collision Repair/Refinish Tech/Damage Estimator, Undercar & Parts Specialist, Service Advisor; Oregon Certified Vehicle Appraiser
DD -'81 Corona wagon - 22R hybrid P&P, Crane stage 3, Si valves, Erson springs/retainers, Weber, Cannon, MSD, Thorley, Borla, 3rd gen Celica front suspension, Cressi Big Brakes, coilovers, Camber plates, RCAs, AGXs, Addco, all urethane bushings, Hilux leafs...
20/22R/RE & Celica Guru, 2nd & 3rd gens - GT-Ss - 'vert, coupes & liftback... & Chevy fanatic
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a2ndopinion
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Re: Front suspension

Post by mandalore on Sat Mar 16, 2013 2:42 pm

Everything looks awesome!

Does the Supra strut tubes affect geometry at all?
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Re: Front suspension

Post by a2ndopinion on Sat Mar 16, 2013 4:09 pm

With the 3rd gen LCAs, it actually has just a touch of positive camber, which is why I'm getting camber plates. The tires wear perfect though, and it handles VERY good. I'm almost scared to see how much better it does with the RCAs and camber plates!

_________________

ASE certified: Master Auto, Truck, Machinist & Collision Repair/Refinish Tech/Damage Estimator, Undercar & Parts Specialist, Service Advisor; Oregon Certified Vehicle Appraiser
DD -'81 Corona wagon - 22R hybrid P&P, Crane stage 3, Si valves, Erson springs/retainers, Weber, Cannon, MSD, Thorley, Borla, 3rd gen Celica front suspension, Cressi Big Brakes, coilovers, Camber plates, RCAs, AGXs, Addco, all urethane bushings, Hilux leafs...
20/22R/RE & Celica Guru, 2nd & 3rd gens - GT-Ss - 'vert, coupes & liftback... & Chevy fanatic
avatar
a2ndopinion
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Posts : 272
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Re: Front suspension

Post by a2ndopinion on Sun Mar 17, 2013 10:17 am

I installed the RCAs yesterday. Hopefully I'll have a chance to post pics tonight. Very simple, took all of 45 minutes from the time I started gathering tools until I'd torqued the lug nuts down. The difference in ride quality is amazing - feels closer to stock suspension, not the harder, more fidgetty stiff spring and shock, lowered ride it had - amazing that it made THAT much difference. The biggest reason for them is to raise the roll center, which had gone from a few inches above ground to a few inches below ground when the car was lowered. Unfortunately, it also gave me more positive camber, so I really need the camber plates installed. They will be the icing on the cake, so hopefully the spring hats arrive tomorrow in the USPS. Then I can align the front end (yes, in my garage - the only work I do not do myself is engine machining and exhaust welding, and I have specialists for that) and then I'll go do some serious testing in the local hills!

_________________

ASE certified: Master Auto, Truck, Machinist & Collision Repair/Refinish Tech/Damage Estimator, Undercar & Parts Specialist, Service Advisor; Oregon Certified Vehicle Appraiser
DD -'81 Corona wagon - 22R hybrid P&P, Crane stage 3, Si valves, Erson springs/retainers, Weber, Cannon, MSD, Thorley, Borla, 3rd gen Celica front suspension, Cressi Big Brakes, coilovers, Camber plates, RCAs, AGXs, Addco, all urethane bushings, Hilux leafs...
20/22R/RE & Celica Guru, 2nd & 3rd gens - GT-Ss - 'vert, coupes & liftback... & Chevy fanatic
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Re: Front suspension

Post by Fredricktflail on Sun Mar 17, 2013 6:50 pm

Thats one hell of a set-up nice work me like.
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Re: Front suspension

Post by a2ndopinion on Fri Mar 22, 2013 11:05 am

RCAs installed




UHMW washer, installed between spring hat bearing and camber plate
http://en.wikipedia.org/wiki/Ultra-high-molecular-weight_polyethylene




Now running about 1 degree negative camber, and enough positive caster to keep plenty of negative camber on the outside tire in turns! Feels like a whole different car!


Ordered these pieces yesterday
coilover bearings to help avoid spring binding and make it easier to turn the height adjustment collar


300 lb, 10" springs - the current springs are 5.3" tall, and as close as we can figure, somewhere between 300 and 325 lb. The top of the coilover sleeve is almost 2" over the top of the strut, which means I'm still losing suspension travel. The rings that the coilovers sit on are being lowered 3", so I'll have more adjustability and full travel w/o having to worry about coil bind.


Leaf spring sliders to go with the above mentioned last suspension project on the rear end. These are for a Chrysler, so are 2.5" wide. I'll have to have them narrowed 1/2", but I got them for a great price! I'll have to turn my overload leaf back over though, because these will lower the back end by almost 2"!
They replace the factory shackles.




_________________

ASE certified: Master Auto, Truck, Machinist & Collision Repair/Refinish Tech/Damage Estimator, Undercar & Parts Specialist, Service Advisor; Oregon Certified Vehicle Appraiser
DD -'81 Corona wagon - 22R hybrid P&P, Crane stage 3, Si valves, Erson springs/retainers, Weber, Cannon, MSD, Thorley, Borla, 3rd gen Celica front suspension, Cressi Big Brakes, coilovers, Camber plates, RCAs, AGXs, Addco, all urethane bushings, Hilux leafs...
20/22R/RE & Celica Guru, 2nd & 3rd gens - GT-Ss - 'vert, coupes & liftback... & Chevy fanatic
avatar
a2ndopinion
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Re: Front suspension

Post by a2ndopinion on Sat Mar 23, 2013 4:18 pm

These got here yesterday. Just waiting for the bearings and revised strut tubes!
Summit Racing 10" x 2.5" 300 lb springs (hence the P/N).

_________________

ASE certified: Master Auto, Truck, Machinist & Collision Repair/Refinish Tech/Damage Estimator, Undercar & Parts Specialist, Service Advisor; Oregon Certified Vehicle Appraiser
DD -'81 Corona wagon - 22R hybrid P&P, Crane stage 3, Si valves, Erson springs/retainers, Weber, Cannon, MSD, Thorley, Borla, 3rd gen Celica front suspension, Cressi Big Brakes, coilovers, Camber plates, RCAs, AGXs, Addco, all urethane bushings, Hilux leafs...
20/22R/RE & Celica Guru, 2nd & 3rd gens - GT-Ss - 'vert, coupes & liftback... & Chevy fanatic
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a2ndopinion
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Posts : 272
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Re: Front suspension

Post by mandalore on Sun Mar 24, 2013 3:59 pm

That is an awesome setup, I need to go for a ride in this thing! Cool
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Re: Front suspension

Post by a2ndopinion on Mon Mar 25, 2013 10:54 am

mandalore wrote:I need to go for a ride in this thing! Cool
Come on down!

_________________

ASE certified: Master Auto, Truck, Machinist & Collision Repair/Refinish Tech/Damage Estimator, Undercar & Parts Specialist, Service Advisor; Oregon Certified Vehicle Appraiser
DD -'81 Corona wagon - 22R hybrid P&P, Crane stage 3, Si valves, Erson springs/retainers, Weber, Cannon, MSD, Thorley, Borla, 3rd gen Celica front suspension, Cressi Big Brakes, coilovers, Camber plates, RCAs, AGXs, Addco, all urethane bushings, Hilux leafs...
20/22R/RE & Celica Guru, 2nd & 3rd gens - GT-Ss - 'vert, coupes & liftback... & Chevy fanatic
avatar
a2ndopinion
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Posts : 272
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Location : Portland, OR

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Re: Front suspension

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