1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Help me sort out my suspension

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Old Mar 8, 2022 | 09:22 AM
  #51  
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From: SE PA
I just got T3's rear suspension Drop Mounts and hope to install them in the next day or so. They help correct the lower trailing arm angle for lowered cars and more importantly, lower the shock mounting point so your shocks don't bottom out prematurely.
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Old Mar 8, 2022 | 09:31 AM
  #52  
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From: Mom’s basement
Originally Posted by Maxwedge
I just got T3's rear suspension Drop Mounts and hope to install them in the next day or so. They help correct the lower trailing arm angle for lowered cars and more importantly, lower the shock mounting point so your shocks don't bottom out prematurely.
I was thinking about those..... let me know how much lower they can mount from factory. It doesn't look like that much from pictures, which wouldn't help a lot since I would need to gain a couple inches. The other option is welding a higher perch and perhaps a side to side brace to those perches....welding, cutting great condition plastic etc, probably just too much to do until I see how these konis feel w/ new springs.

Let me know how much lower the strut mount point is when you get them on please. thanks.
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Old Mar 8, 2022 | 09:59 AM
  #53  
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How much drop you need depends on how much you lower your car. On my race car I dropped the LCA mount on the axle 3 inches. I also moved the shock mount brackets down the same amount. I wish these were available when I did the work - they are for Fox Body shocks and they bolt on like the stock parts do:

https://lmr.com/item/LRS-9998915K/Mu...cket-Kit-86-93
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Old Mar 8, 2022 | 11:07 AM
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I don’t believe I have had any bottoming problem with my Bilstein shocks, but I haven’t checked the travel without springs. I do believe that the B6 Bilstein is designed to be shorter for lowered cars.
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Old Apr 29, 2022 | 07:58 AM
  #55  
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From: Mom’s basement
so, I will be wrapping this up this weekend and doing alignment.

I've looked at threads on how to do so and seen varying settings. main question is regarding the tension rod to the lower control arm setting. I am assuming this would be for caster and the tie rods for toe in/out.

most of the stuff is shown in degrees any advice on setting the tension rods for caster using string method?

comments welcom for settings on camber, caster, toe in/out
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Old Apr 29, 2022 | 09:25 AM
  #56  
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From: https://www2.mazda.com/en/100th/
the tension rods do caster, and i've never seen a really good guide to adjust em. you want the most Caster angle you can get, without anything binding.
i don't know if what i did was good, but on the Lemons car started at Mazda's spec, and then basically just maxed it out, and that is as much as it was going to let me have without the control arms binding

for toe i'd use a little toe in on a street car.

Camber kind of depends on the ride height, but again in a street car maybe -1 is a good start,
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Old Apr 29, 2022 | 09:40 AM
  #57  
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From: Mom’s basement
Originally Posted by j9fd3s
the tension rods do caster, and i've never seen a really good guide to adjust em. you want the most Caster angle you can get, without anything binding.
i don't know if what i did was good, but on the Lemons car started at Mazda's spec, and then basically just maxed it out, and that is as much as it was going to let me have without the control arms binding

for toe i'd use a little toe in on a street car.

Camber kind of depends on the ride height, but again in a street car maybe -1 is a good start,

Thanks. thought i was crazy, glad somoene else says no real good guide to adjust them. I'm thinking for the tension rods to simply have them both be equal in the center of the wheel well (or pretty damn close), and use my camber/caster plates to adjust for a bit more caster. For camber, I don't know that I will be looking so much at degrees, rather just a slight lean inward so that it's barely noticeable to the eye, but where the top of the wheel lines up inside the wheel well. right now, with just the camber plate set inward (no notches) it is visably leaning in, so I know it's way too much. I plan on using a large T square and making sure both sides are relatively equal while being inside the wheel well. Probably compressing each side to check for any binding or rubbing. probably star with zero toe, perhaps a small toe in and see how it feels. I'd like to go out, but I don't want it to feel squirly at speeds north of 100.
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Old Apr 29, 2022 | 10:55 AM
  #58  
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From: https://www2.mazda.com/en/100th/
Originally Posted by ATC529R
Thanks. thought i was crazy, glad somoene else says no real good guide to adjust them. I'm thinking for the tension rods to simply have them both be equal in the center of the wheel well (or pretty damn close), and use my camber/caster plates to adjust for a bit more caster. For camber, I don't know that I will be looking so much at degrees, rather just a slight lean inward so that it's barely noticeable to the eye, but where the top of the wheel lines up inside the wheel well. right now, with just the camber plate set inward (no notches) it is visably leaning in, so I know it's way too much. I plan on using a large T square and making sure both sides are relatively equal while being inside the wheel well. Probably compressing each side to check for any binding or rubbing. probably star with zero toe, perhaps a small toe in and see how it feels. I'd like to go out, but I don't want it to feel squirly at speeds north of 100.
all of the measurements and torks are in the shop manual, http://foxed.ca/rx7manual/manuals/19...suspension.pdf


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Old May 5, 2022 | 03:31 PM
  #59  
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just took her out for a 5 mile test. suspension feels good. still need to do alignment and adjust front shocks and double check everything. feels smoother on bumps etc...but I have not given it the real running till I have a few quickies and double check stuff.

The big thing. MY CLUTCH HOLDS! the heavier flywheel and stronger clutch are no longer slipping in high torque/load conditions like going up a bridge at 45 in 4th and gassing it. no slippage in 4th or 3rd. and in 2nd....from rolling at 10-20 mph and gas it you get two huge black streaks about 30 yards long behind you like it should.

Getting there. now just burn off the exhaust paint, check everything, button **** up, alignment (it was pretty good before) and adjust front shocks and see what she's got. takes a while after having this much stuff apart for me to feel comfortable laying into it in 4th for a stretch, let alone 5th.

As far as ground control. They sent me what I ordered. customer service is rough, but like that of a small business. They sent what I asked for but I wouldn't go spinning siogns for them.
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Old May 5, 2022 | 03:37 PM
  #60  
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From: Mom’s basement
oh, and I settled on bringing the rear in 40mm. by switching from 45 to 5 mm spacers and am running 45 mm spacers up front-needed for tire clearance even with coil overs.

I would take a picture but it looks about the same as before. The front, when adjusted low is way too low for my taste. can't even get the smallest floor jack under there. So I raised it up. May look the same as before, but has a lot more travel front and rear and the front feels a lot better. still undecided on the eibach's vs. RB rear springs. Eibach's feel spongier, but I have yet to see if that is a good thing at speed.
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Old May 7, 2022 | 03:51 PM
  #61  
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Ok. Finally stretched her legs. Feels fantastic. Entirely new ride. Feels like it should. Crisp….no crunches on bumps or backing out. Just feels fantastic. They heavier flywheel and clutch make for a whole new ride as well. I can cruise in 5, 4th etc at low speeds and get into it with zero slippage. Just so much smoother. No more running at 4k rpm’s to worry about slippage and darting in lane shifts.

this things is officially bad ***. Any 3rd gens around WPB?
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Old May 8, 2022 | 11:05 AM
  #62  
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How heavy is the flywheel? Did you go from aluminum to steel or just a heavier aluminum?
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Old May 8, 2022 | 11:26 AM
  #63  
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Went from 16 lob to 30 lb flywheel. Steel. Love the way it Carrie’s momentum on shifts….which is good driving a 5 speed in an 8 speed world. Those newer trannies keep ‘em in the right rpm range. So I think this makes up a good bit for the bigger drop in rpm’s on shifts.
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Old Aug 5, 2023 | 08:41 PM
  #64  
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Car still handles great, but not liking the gearing change with the smaller rear tires. Next set will be somewhere in the middle in the rear. I.e.

old tires gear changed (tires were 6-7 years old but low miles….felt hard.. bf Goodrich sport types)
1st-roughly 40ish and spin like crazy all the way
2nd-roughly 60 but god forbid you are coming out of a corner and nail it……
3rd-roughly 90 very strong, sick strong
4th- very very strong
5th-a good bit of lag as it is overdrive. Good bit, but I always back off about here either way. It’s a tin can.

this set
1st- 35ish runs crisp. Have yet to drop the clutch with revs but holds good…very crisp. I don’t floor it either really.
2nd- 55ish crisp again. Comes out of corners much, much more solid and feels like a fast sports car.
3rd- 85 hate it. The low speed limits downshift into 3rd and makes for an early shift to 4&5
4th- 115? Solid pulls, but it needs the room for higher speed before hitting 5th
5th- same as before

so I gotta find that happy place of coming out of a corner in 2nd and loving the bigger tires on the big end.

anyone notice this big of a change when swapping sizes?
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Old Aug 7, 2023 | 06:29 AM
  #65  
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What rear gear ratio and tire size are you running? I run 4.10 and a 235-40-17
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Old Aug 7, 2023 | 07:35 AM
  #66  
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Originally Posted by Freeskier7791
What rear gear ratio and tire size are you running? I run 4.10 and a 235-40-17
245-45-16 3.9 rear gear

245-50-16 I had were an inch taller. The v8 torque likes to pull more and rpm peak is about 5600. So it winds up quicker but shortens my gear ratio
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Old Aug 8, 2023 | 06:24 AM
  #67  
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From: AUSTRIA
Originally Posted by Maxwedge
I haven't messed with shocks too much; went from 34yo stock to Koni Sports and haven't looked back.


But yes, the rear Eibach springs are 200# and have dead coils so you can lower the car without affecting the spring rate. Plus they're about an inch or so lower than stock. The RB are 112# and "supposedly" lower the car 1". They actually raised my rear almost an inch, so I guess they need a few thousand miles to break-in and soften. They are designed for "sporty comfort".
Sorry for highjacking an old thread but:
What springs are those exactly? I've been asking around eibach, RB, etc but noone can tell what springs are at least same height as stock (or higher). Would the eibachs with deadcoils result in a higher height?

Also would love some specs on springs for higher ride (bumpy roads and offraod) like diameter, length, thickness...
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