BC Coilovers

[billy_vk]

I'm deciding between bc racing or riaction. Did you need to buy megan racing arms or swift springs? Was the camber good with your set up?

I didn't do the swift springs. I know riaction will sit lower. I didn't change anything other than sways and the coilovers and the camber was still close to in spec tolerance when aligned
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[Volfy]

I'm deciding between bc racing or riaction. Did you need to buy megan racing arms or swift springs? Was the camber good with your set up?

I upgraded both of our Riaction coilovers to swift springs. Whether that is a "need to" depends on your usage case. For us, it was absolutely necessary.

Need for Megan racing arms depends on how much you lower your ride height. The car needs a fair amount of suspension travel to handle well, especially in the extremes, so we kept our lowering to a modest amount. As such, we didn't need Megan arms to get the cars properly aligned.

If OTOH, lowering is mostly an aesthetics exercise to you, and you want to drop the car as much as you think looks good, then there is a real chance you'll need Megan arms to correct for excessive rear camber.

 

[socalvn]

View attachment 89371
I upgraded both of our Riaction coilovers to swift springs. Whether that is a "need to" depends on your usage case. For us, it was absolutely necessary.

Need for Megan racing arms depends on how much you lower your ride height. The car needs a fair amount of suspension travel to handle well, especially in the extremes, so we kept our lowering to a modest amount. As such, we didn't need Megan arms to get the cars properly aligned.

If OTOH, lowering is mostly an aesthetics exercise to you, and you want to drop the car as much as you think looks good, then there is a real chance you'll need Megan arms to correct for excessive rear camber.

Any chance you could provide me with the specific spring number for Swift that you used this is my next upgrade Thanks if possible

 

[Volfy]

Any chance you could provide me with the specific spring number for Swift that you used this is my next upgrade Thanks if possible

The first set I bought was Z65-178-080, which is what is shown in my pic above. These are 7" free length, fairly close to the "stock" Riaction springs. If you plan on lowering fairly significantly, these are probably the longest you'd want to run. My guess is the 7" will give you up to 3" lowering. If you want to lower even more than that, even 6" will work. The "stock" black Riaction springs are 160mm (6.3") free length.

Since we don't lower our G70/Stinger anywhere close to that much, I went with the 8" version
Z65-203-080 on our second set. These will limit lowering to probably 2" or less, which is plenty for what I prefer.

Which to choose is a personal judgement call. Some folks advocate getting the shortest/lightest that would work. I myself prefer the greater max/useable stroke that longer springs provide. And better linearity, which is one of the main reasons for upgrading to Swift.

Check out the specs here and decide for yourself: Metric Coilover Springs | Swift Springs USA – The Science of Winning

 

[socalvn]

The first set I bought was Z65-178-080, which is what is shown in my pic above. These are 7" free length, fairly close to the "stock" Riaction springs. If you plan on lowering fairly significantly, these are probably the longest you'd want to run. My guess is the 7" will give you up to 3" lowering. If you want to lower even more than that, even 6" will work. The "stock" black Riaction springs are 160mm (6.3") free length.

Since we don't lower our G70/Stinger anywhere close to that much, I went with the 8" version
Z65-203-080 on our second set. These will limit lowering to probably 2" or less, which is plenty for what I prefer.

Which to choose is a personal judgement call. Some folks advocate getting the shortest/lightest that would work. I myself prefer the greater max/useable stroke that longer springs provide. And better linearity, which is one of the main reasons for upgrading to Swift.

Check out the specs here and decide for yourself: Metric Coilover Springs | Swift Springs USA – The Science of Winning

Thanks for taking time with the detailed response