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 Post subject: Adjustable Coilovers?
PostPosted: Mon Oct 08, 2012 12:31 pm 
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Joined: Sat May 29, 2010 11:52 am
Posts: 100
Location: Springfield, OR
So here's the deal, I have a 72 Toyota Corona Deluxe Coupe and I'm wanting to lower the front end but I don't want to cut my springs. I would much rather find some adjustable coilovers or lowering springs to swap in. Now I haven't been able to find anything specifically made for my car or any Toyota that old so I'm wondering if anyone could give me some input on this subject.


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 08, 2012 8:54 pm 

Joined: Tue Apr 20, 2010 2:58 pm
Posts: 58
Location: AZ
I would contact Gabe @ TechnoToyTuning and see if they have any Ground control sleeve kits that will work. If he comes up empty handed, contact Ground control with the diameter of your strut casing and the weight of your car(to figure spring rate) and they will hook you up with what you need

Im sure any fab. shop in your area can cut you some metal plates for spring perches so you can cut off your existing.

If there was a Corona out here I get the casings and do it for you :)

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1971 TE28 Corolla
1980 TE72 Corolla
1995 S14.5 240sx
2001 JZX161 GS300
2005 R6


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Tue Oct 09, 2012 6:51 pm 

Joined: Thu Sep 27, 2012 7:33 pm
Posts: 26
Location: Portland, Oregon
For a start, check out Pro Auto in eugene. The Corona (at least mine does) uses double A-arm front suspension and leaf spring rear, same as every domestic used for circle track racing since forever.
Things might have to be machined to fit just right, but Im betting they could at least give you some ideas or point you in the right direction.

When I lived down there they were on the corner of Roosevelt and Seneca but google maps is showing them somewhere else.... cant be too many sprint car shops down there.


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Thu Oct 11, 2012 11:52 am 

Joined: Wed Mar 07, 2012 12:23 am
Posts: 73
Location: Long Beach
Not sure if the 72 Corona is the same as the 75 Corona, but I called TTT for an adjustable coilover for my car. He said he didn't have any. I'm planning on cutting some springs and adding better shocks.


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Thu Oct 11, 2012 1:07 pm 

Joined: Sun Jul 10, 2011 10:15 am
Posts: 17
Location: Virginia Beach, VA
Even if the ground control sleeves don't fit perfectly you can make them work. With my ground controls on my AW11 the sleeves didn't fit the front perfectly, so I welded a bead around the top of the strut to make the sleeve snug.

Image


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Thu Oct 11, 2012 5:11 pm 

Joined: Tue Apr 20, 2010 2:58 pm
Posts: 58
Location: AZ
I made the same mistake Calus, he has the equivalant to Chevy truck suspension.
You can measure your spring diameter, use google to figure your wanted spring rate and order from: http://www.speedwaymotors.com/search-coil-springs.html

Personally I would measure the diameter and hit the junkyard in search for a matching spring from a small truck, then cut to size. Being from a truck they will have a stiffer spring rate and give you that stability we all crave in the corners 8)

Phil~

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1971 TE28 Corolla
1980 TE72 Corolla
1995 S14.5 240sx
2001 JZX161 GS300
2005 R6


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Thu Oct 11, 2012 6:24 pm 
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Joined: Sat May 29, 2010 11:52 am
Posts: 100
Location: Springfield, OR
Jdmturbo wrote:
Personally I would measure the diameter and hit the junkyard in search for a matching spring from a small truck, then cut to size. Being from a truck they will have a stiffer spring rate and give you that stability we all crave in the corners 8)

Phil~


I like this idea, I will probably do this to get my car lower faster then save up for some QA1's or something to that effect. Do you think some s10 springs would work?


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Thu Oct 11, 2012 8:42 pm 

Joined: Sun Jul 10, 2011 10:15 am
Posts: 17
Location: Virginia Beach, VA
Oh, it doesn't have regular mcphearson style struts then? Most of my experience is from working on my aw11.


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Thu Oct 11, 2012 9:39 pm 
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Joined: Sat May 29, 2010 11:52 am
Posts: 100
Location: Springfield, OR
This is what the front suspension looks like on my car:
Image


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Sun Oct 14, 2012 10:54 am 

Joined: Sun Jul 10, 2011 10:15 am
Posts: 17
Location: Virginia Beach, VA
The Names Yota, Toyota wrote:
This is what the front suspension looks like on my car:
Image



Ohhhh, wow. That... Yeah.


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Sun Oct 14, 2012 11:25 am 
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Joined: Mon Jul 30, 2012 4:36 pm
Posts: 376
Location: Coarsegold California (around fresno)
Well shoot. If this is the case, personally I'd just put an airbag on each side. you then weld a mount along the outside for the shock. If you don't want to invest in all the tank, comp, valves lines, etc, you can always put a shrader (not sure on spelling) valve directly on the bags port and adjust your pressure (aka ride height) like you fill a tire.
-just an idea. you wont offend me if you don't use it. :tu: :mrgreen:

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 Post subject: Re: Adjustable Coilovers?
PostPosted: Sun Oct 14, 2012 12:50 pm 
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Joined: Sat May 29, 2010 11:52 am
Posts: 100
Location: Springfield, OR
Another question, I'm trying to find a way to gain more static neg camber for the front wheels. So far I've found several options but they are for Hondas and im wondering if anyone has any experience with these: http://www.weaksauceparts.com/store/product.php?productid=19312&cat=2603&page=1.

Since I have zero experience with Honda's I have no idea what the suspension is like and I don't know if its similar to a Toyota.


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 12:07 am 

Joined: Wed Jul 25, 2012 12:44 am
Posts: 21
Location: San Diego, CA
I am in the same boat as you.
I've been looking to lower my 72 Corona Mark 2 and cannot find anything detailed enough out there. I am somewhat knowledgable on suspension work but still have way more to learn. I contacted Techno Toy Tuning and they could not do anything for me. Although they stated that our cars (RT generation) has a suspension set up very similar to Datsun Roadsters. That's all I was told. I think it's a good jump off point, but now I'm stuck again on what to do next.

If anyone can chime in on this, is there any way to retro fit and fabricate front/rear AE86 coilovers for a car with this type of suspension?

Sorry to thread jack, just wanted to shed more light on this issue.


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 11:34 am 
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Joined: Sun Aug 09, 2009 1:53 am
Posts: 302
Location: Spokane, WA
The only way I have been able to find a way to lower this type of suspension is to either cut springs or to go through kingsprings.com.au. They had the springs for my Corona Mark II now I just have to save the money and get around to ordering. Hope it helps


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 12:04 pm 

Joined: Wed Jul 25, 2012 12:44 am
Posts: 21
Location: San Diego, CA
theunstated wrote:
The only way I have been able to find a way to lower this type of suspension is to either cut springs or to go through kingsprings.com.au. They had the springs for my Corona Mark II now I just have to save the money and get around to ordering. Hope it helps



That's awesome thanks for the tip. What would you suggest I use for the shocks once lowering with these springs?


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 12:35 pm 
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Joined: Sat May 29, 2010 11:52 am
Posts: 100
Location: Springfield, OR
Martino wrote:
theunstated wrote:
The only way I have been able to find a way to lower this type of suspension is to either cut springs or to go through kingsprings.com.au. They had the springs for my Corona Mark II now I just have to save the money and get around to ordering. Hope it helps



That's awesome thanks for the tip. What would you suggest I use for the shocks once lowering with these springs?


Yea, Definitely interested in the shocks. Could KYB gas adjusts be used?


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 3:23 pm 

Joined: Tue Apr 20, 2010 2:58 pm
Posts: 58
Location: AZ
To gain some negative camber i would check with a local fabrication shop(lifted/off road shop,sand rails) and see what they would charge you to make some adjustable upper control arms. Or if you have a pipe bender,welder and a chop saw, sky's the limit. If you had an extra set of control arms I could "borrow", I would even take a whack at making you some.

My ideal tubular a-arm for you would have a the ball joint stationary and have adjustable heim joints on the end or a threaded rod with the bushing press in the ends. Heim or rose joint ends can be a little harsh for a "street" car 8)

Another option would be to cut an inch or so out of your upper and re-weld, but this doesn't leave me with a warm-fuzzy-safe feeling, there also is no adjustability and Corona arms are not sitting in every J-yard to go back to stock or have a second chance.

And here is the "token" picture to keep you motivated and coming back for more :D
Image

Phil~

_________________
1971 TE28 Corolla
1980 TE72 Corolla
1995 S14.5 240sx
2001 JZX161 GS300
2005 R6


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 7:59 pm 
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Joined: Fri Oct 12, 2007 8:57 pm
Posts: 8537
Location: Arlington, TX, USA
How is the upper arm attached? American cars with this style of front suspension usually install shims between the subframe and upper control arm to space it back towards the center of the car to gain negative camber. Is the attachment point a bar that's parallel with the frame or is it those visible bolts/nuts?

The Names Yota, Toyota wrote:
This is what the front suspension looks like on my car:
Image


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 8:02 pm 
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Joined: Fri Oct 12, 2007 8:57 pm
Posts: 8537
Location: Arlington, TX, USA
Figuring out some eccentric bushings/bearings for the lower control arms would sort out camber adjustments as well?

For lowering, I'd just measure the diameter of those springs and see if any of the available off the shelf springs fit (2.5", 3", 5", etc.). That way you can pick the rate and length you want. :tu:


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 Post subject: Re: Adjustable Coilovers?
PostPosted: Mon Oct 15, 2012 8:07 pm 
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Joined: Fri Oct 12, 2007 8:57 pm
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Location: Arlington, TX, USA
The Names Yota, Toyota wrote:
Yea, Definitely interested in the shocks. Could KYB gas adjusts be used?


Once you decide how much you want to lower it, you can see how much shorter the shock needs to be, then I'd go here and see what's the right style and length and buy shocks for that. :tu:


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