Has anyone lifted their Celica?

Suspension and other discussion

Re: Has anyone lifted their Celica?

Postby underscore » Thu Jun 27, 2019 10:15 pm

Checking old episodes of Project Binky for info and measurements, when they moved the rear strut top mounts inwards 20 mm it moved the uppermost knuckle bolt hole inwards 2 mm. They were also helpful enough to show a closeup shot of the rear strut mount with two 25 mm spacers bringing the mount downwards. The angle is fairly steep, so along the 25 mm spacer the top and bottom edge appear to only be a few mm different (when seen from above). Based on that I think I would only need a small amount of rear camber adjustment to bring it back to spec (worst case shaving 0.5mm off the uppermost knuckle bolt hole should do the trick).

Clearance to the strut tower I'm hoping will be okay as I'm pushing all the bulky stuff downwards from where it normally is much more than inwards, but we'll find out.
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★ 1991 GTFour RC ~ "Rebel Scum" ★
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Re: Has anyone lifted their Celica?

Postby underscore » Mon Jul 01, 2019 6:14 am

I got my brakes swapped back to stock and tossed my blown mockup strut in so I could check clearances. A stock GTFour was measured at 14.25" from the fender to hub center so I jacked this up to 15.25" which is what ride height should be with the lift. This is using a baldish 205/50R16, which is a 24.1", tire on a 7th gen rim with an 8 or 10mm spacer behind it, I can't remember which I grabbed. At full compression (bump stop fully squished) there's 1.25" from the tire to the fender lip, I checked full lock at full compression in both directions and there's 1.25" clearance all around except to the rear fender liner at full left lock where it was about 0.75" (this is partly due to the spacer).

Image

As much as I'd like the look of shoving the biggest, most aggressive looking tire I can under there I'll likely go with a 205/55R16 (24.9") so I have loads of space and can borrow spares from my wifes Matrix. Stock is a 23.5" tire so I'll gain 0.7" from the tire and 1" from the lift giving me about 6.8" of ground clearance if the internet is to be believed. That's nearly an inch more than an Impreza and nearly 2 inches more than the BRZ driven by the guy who sets the routes for some of the TSDs here so I should be safe.
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: Has anyone lifted their Celica?

Postby underscore » Fri Jul 26, 2019 3:54 pm

Lots of stuff going on so progress slowed down a bit, but last night I managed to rough out the rear spacers. Popping the stock studs out of the rear mount I realized they're smaller than the fronts. I don't feel like hunting down (or waiting for) more parts so I'll just upgrade the rear to the larger studs.

Since I don't have a drill press I bought a cheap drill bit guide to keep the holes straight, it seems to have helped a lot.

Image

Image

You can see the tubes I cut are a hair too long so I'll trim those down when I clean up the poly. The chewed up looking bit in the center is some material I have to remove to clear the angled center portion of the mount.
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: Has anyone lifted their Celica?

Postby alltrac801 » Fri Jul 26, 2019 8:41 pm

Those turned out looking great!
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Re: Has anyone lifted their Celica?

Postby Numbchux » Tue Jul 30, 2019 7:40 pm

Good work, keep us updated.
-Chux
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Re: Has anyone lifted their Celica?

Postby underscore » Tue Jul 30, 2019 8:11 pm

Thanks guys, I put the rear strut assemblies together so I just need to shorten the tubes and notch the brake line supports (so I don't have to disconnect the lines) and then they can go in. Assembly ran into a few annoyances using front strut inserts in the rear but nothing major.
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: Has anyone lifted their Celica?

Postby underscore » Mon Aug 05, 2019 5:30 am

I shaved down the support tubes and cleaned up the poly plates and assembled the rear struts with the new dampers/isolators/mounts. Lesson learned, when doing stuff like this fit everything to the strut mount *before* you assemble the strut. Otherwise you'll learn one of the studs holes is a hair too loose as you're trying to press-fit the tubes on and go through a bunch of hassle securing it again while trying to avoid disassembling the whole thing.

Anywho, they're together now and I can move on to the fronts. Ignore the oversized nuts, they were just there to save turns pressing the poly on.

Image

Image
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: Has anyone lifted their Celica?

Postby Domspun » Fri Sep 13, 2019 1:11 pm

I'm on the same route as you. I plan to use 215/75R16 BFGoodrich All-Terrain T/A KO2. Now I'm using some crappy tires just for testing the setup. I just had the car aligned, I'll take some measurements and pictures.
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Re: Has anyone lifted their Celica?

Postby underscore » Fri Sep 13, 2019 5:22 pm

Much appreciated. What did you use to add height?
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: Has anyone lifted their Celica?

Postby Domspun » Sun Sep 15, 2019 6:21 pm

I have CX Racing coil-overs, so I can raise the shock body and coil is at it's highest position.

Result:

Image

Image

Tire diameter is 24.5'' versus OEM 23.9'', not much of a difference, but helps comfort because I have to keep stiff springs since shock travel is around 3''. I need to find a way to put longer shocks.
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Re: Has anyone lifted their Celica?

Postby underscore » Mon Sep 16, 2019 2:49 am

Wow, that's a lot of clearance. Springs seem easy enough to get in whatever lengths and rates you want, but it seems tricky to find dampers that have a decent amount of travel. From my understanding the diameter of the dampers and the top/bottom mountings are pretty generic, but they're always sold by vehicle and not by size. You either need to find a good sales rep who can find what you want or pick through the application guide to try and find another car with the same ID but longer springs (going on the assumption that the dampers have more travel to match) and hope that they mount up.

For example here's the application guide for BC: https://www.bcracing-na.com/files/websi ... heet11.pdf

The ST185 coils come with 62-180-8 front springs and 62-200-4 rear (62mm ID x 180mm long x 8kg). There's 3 vehicles in there with 62-260-8 springs (same ID and rate but 80mm or 3" longer) so my assumption would be the dampers for those cars would have 3" more travel as well. But they're for a Lexus LS4x0 which I can't imagine actually has 3" more travel than a Celica so I'm doubting the damper is actually any longer. I have no idea how to decipher the damper part numbers either but if anyone does here they are.

Celica: 260-120-MF-12.0-M12
Lexus: 280-155-AR1-12.5-M12
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: Has anyone lifted their Celica?

Postby Domspun » Mon Sep 16, 2019 8:32 am

I want to find a way to replace the shock in the coilover. I like the threaded body for adjusting height.
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Re: Has anyone lifted their Celica?

Postby awdmofo » Tue Sep 17, 2019 3:43 pm

I can't wait to see what you guys figure out. I'm going to rally my 90 next year after I get the engine sorted out and brakes etc :D
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