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coilovers for 1st gen brat


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Im needing to replace my shocks and struts soon, was thinking coilovers would be a nice upgrade, but as far as I can tell theres zero support for aftermarket suspension parts for 1st gen brats. Has any body else found parts that suit a brat? Maybe something from another car?

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That's the trick, going fully custom and getting it right. You've got to start with figuring out the wheel rate you want (force over distance, like 400lbs over the wheel makes the body go down an inch), then calculate the spring inclination and leverage ratio at the spring mount. That will get you in the ballpark. Then you adjust the calculated spring rate by the amount you want it softer or stiffer. Then you find a spring with that stiffness that will fit in your space. Finally, you get a damper (shock) made up to meet that spec and your preferences.

 

Whew, that's a lot of work and it still might not make you as happy as you'd hoped. You learn a lot, though, which may be worth it. I went through that exercise with a Renault years ago, ended up doing all the calculations only to find out that stock springs were pretty close and a nicer set of dampers made all the difference in the world!

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I have "vortex / XT rear coil overs" on  the rear of my second gen brat. I did have miata front coil overs but they were way too stiff so I swapped them  over to my vortex / XT.

 

have a look at this thread on Ausubaru

 

http://www.ausubaru.com/forum/showthread.php?t=15851&page=60

 

and I think you could use these with just a little bit of modification to make your own top mount bracket

 

http://www.ebay.com/itm/VW-bug-Baja-Sandrail-Beetle-Adjustable-Coil-Over-Shocks-/181463898151?fits=Make%3AVolkswagen&hash=item2a40175827&vxp=mtr

 

Does the first gen brat have a torsion bar like the second gen brat? if so you could use both types of suspension. I have mine backed off and the vortex / XT shocks work fine, but if I want to carry a heavy load I just wind  up the torsion bar and not a problem.

 

TOONGA

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Ya, the first gen has a torsion bar. So are the xt coilovers a direct swap? Or do they require some modifications?

 

The bottom mount is a direct fit the top mount requires a bracket to be made so that you have a mounting point for the top rubber.

 

this is the mount I made it shows it in use on the miata coil over

 

Image020.jpg

 

 

here is the same bracket on a 4WD wagon shock it was way too long

Image154.jpg

 

 

I would suggest making a mount that was the inverse of the one I have, so your brat isn't too high at the back.

 

 

TOONGA

Edited by TOONGA
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The bottom mount is a direct fit the top mount requires a bracket to be made so that you have a mounting point for the top rubber.

 

 

this is the mount I made it shows it in use on the miata coil over

 

Image020.jpg

 

 

here is the same bracket on a 4WD wagon shock it was way too long

Image154.jpg

 

 

I would suggest making a mount that was the inverse of the one I have, so your brat isn't too high at the back.

 

 

TOONGA

Nice, thanks for all the info!

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  • 2 years later...

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