Suspension/Wheels/Tires/Brakes

What more do I need?

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Old 10-23-09, 03:01 PM
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What more do I need?

I'm in the midst of my build right now and am currently tearing down the suspension. What started as a get the car and put it together and then mod it project has turned into get the car...and do everything now that I planned to do later kind of project.

The car is a '94 touring with 70k miles. When completed it will have 450hp and 450 ft lb of torque. I want it to be a mild mannered street car that is very tastefully done. It will be used for anything and everything I want to do on the weekend including road trips, autocross, track days, and drag racing.

This all started because the previous owner had a full superpro bushing kit..so I picked that up with the car. Now the entire suspension is going to come apart.

The car has Eibachs already, and no time better than right now to put new shocks on it. After a bit of research I went with the Tokico D-spec shocks.

Things I have decided on -

Eibach Springs
Tokico D-specs
17x9 wheels with 255/40 Toyo R888's all around
Full Superpro bushing kit

Things I am unsure about -
Sway Bars, should I get some and which ones to choose

Toe links and trailing arms -
The dramatic toe out affect is something I really don't care to experience at high speeds. The car is relatively low mileage at 70k miles and has always been in dry weather. I haven't had a chance to really check them out yet, but I do not expect to find rotten rubber. I have been considering making some solid ones on my own or buying an aftermarket set. I do not want to transfer vibration or noise into the cabin because of a solid link to the rear suspension...is it noticeable?

Trailing arms -
Honestly I am unsure as to what these really do. Should these be replaced as well? Same deal with the toe links...haven't had a chance to check them out...but I don't really expect to find them badly worn.

Thank you for any input on these questions or any words of advice in general! I am very happy with the choices I've made so far and am trying to order the rest of the parts I need so it can go back together.
Old 10-31-09, 11:59 PM
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No one wants to help (intelligently) spend my money?
Old 11-01-09, 09:34 PM
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Some suggestions:

1. I would scrap the Eibach springs unless they are on Ground Control coilover sleeves:

http://www.ground-control-store.com/...hp/II=42/CA=87

I would look at something like 550F/450R or 500F/400R for springs.

2. Widefoot swaybar mounts even if you stay with the stock swaybars.

3. If you are going for sway bars, take a look at Tanabe swaybars.

4. Toe & trailing arms:

http://www.fighters-garage.com/rx7.html
Old 11-02-09, 01:03 AM
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Thanks for the input.

What are the negatives to the eibach springs? I thought Howard Coleman recommended them pretty much as the ideal spring choice for the fd? (not that his opinion is the only one that matters, but it definitely carries some weight!) The only thing that I have found that people dislike is that it does not really lower the back of the car..but that always seems to be an aesthetic complaint.

Thanks for the link to the toe and trailing arms..those look very nice.
Old 11-02-09, 08:47 AM
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Originally Posted by spanks13
What are the negatives to the eibach springs? I thought Howard Coleman recommended them pretty much as the ideal spring choice for the fd? (not that his opinion is the only one that matters, but it definitely carries some weight!) The only thing that I have found that people dislike is that it does not really lower the back of the car..but that always seems to be an aesthetic complaint.
Eibach Pro-kit springs do very well for a stock powered car. However, if you are going to track a 450hp RX7, you'll want something a little more compliant. Here's a shot of my car when it was stock powered on Eibach springs using crappy Goodyear tires:

http://mahjik.homestead.com/files/FD...P/9F9B4695.jpg

Add in a lot more power and tires that are a heck of a lot sticker then what I had at that time.... you'll be scraping your body work all over the track.

Keep in mind that I said "Pro-kit" for the springs as Ground Control uses Eibach springs for their coilover sleeves. Two completely different animals.
Old 11-02-09, 03:52 PM
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Thank you again! You've been a huge help.

I think I will put the car together with the eibachs for now. I probably won't be ready to take the car onto a road course right away after I get it together...most likely due to a lack of money haha. I'd also like to get some miles on it to make sure its not going to come apart on me.

Very interesting point about the ground clearance. I wasn't really thinking of lateral roll lol..nice lean!

I was between the Racing Beat swaybars and the Tanabe. I've read more good things recently about Tanabe so I'll definitely check them out.




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