Boxster 987.1, Rear Swaybar Cayman R conversion

Hi Guys Good afternoon from the UK has anyone done a Cayman R Rear Anti Roll Bar conversion, on a standard Boxster ? would I get better turn in, or would it upset the dynamics of the chassis on a standard car with standard suspension, and ruin the ride quality? kind Regards nick

Have not done it but it shouldn't ruin the ride quality. Bars only come into play with lateral load or one wheel bumps. It will increase oversteer at the limit...so maybe if you are trying to recreate an old aircooled 911 ? Are you routinely on the limit? The cars are pretty well balanced there and you may find your self in drift mode more often.... You will probably reduce rear traction in corners as the bar will tend to unweight the inside wheel and it will then slip under power. The R had a limited slip in it. This is one reason I specifically didn't go to the R bar when I put R suspension on my .2 base. But the swap is literally minutes of time and not expensive so try it out!

Hi Ric Thank you for coming back to me so quickly, and your great comments Im not a total balls out type driver but I do drive quickly on occasions, I think the last thing I would want is a drift machine, and loss of traction in corners not good this sounds like its not the way to go, I think I will give it a mis, like you say Ric our cars I finely tuned and balanced why spoil what is a great handling car Thank You Ric, have a great weekend Nick

If you’re going to upgrade the sway bars, you don’t just change one you have to to do both at the same time. I would recommend upgrading to the Cayman R sway bars or go to another brand like H&R like I did. I am on the Cayman R suspension with the H&R sway bars in the car handles like a dream. Still great for daily driving but perfect for the canyons and spirited driving.

Changing one is perfectly acceptable but you have to understand the goal and what you are doing. Just know over doing it will lead to an imbalance that you may. Or discover until you hit the limit!!

Hi Guys thanks for the comments, what I learnt was, that I need to up grade is the front coffin arms, and possibly the front ARB just not sure which front ARB

I currently have the H&R's on my ' 06 Cayman S and am very happy with them, they are well balanced. The rear bar is very close to the same outside diameter as the "R" rear bar @ 22m but there are two link mounting holes so there is a bit of adjustability for over/understeer which is nice. The "R" bar has one link mount, I believe, based on photos I've seen and they are $166 on Sunset's web site as of this am. As a comparison your current rear bar is 19mm so i think the R bar will definitely increase your oversteer which is what it sounds like your looking for but it may be too pronounced if you don't change the front to an "R" bar as well to keep it balanced as have been metioned. Again the H&R setup is nice because there are two settings on the rear bar to adjust the oversteer effect. You will notice that overall your car will stay a lot flatter in turns especially if you replace both front and rear bars. Your open diff actually creates oversteer as the unloaded inside wheel will want to rotate more exiting a turn under acceleration losing traction and causing the rear end to slide, I have experienced this on the track and road before I replaced mine with a TBD years ago. There are many other factors to consider as well like alignment specs, tire pressures, rubber compounds, the shock absorber rate, shock condition, etc.. As an experiment try adding 3-5psi more to your rear tires vs the fronts, you will likely increase the oversteer effect.

Hi Intubator Thank you for your excellent advice, quite possibly the H&R kit is the way to go from yours and other peoples comments, does anyone know if the Cayman R Front ARB will even fit a 987.1 chassis?........ if it doesn't then Im stuck with just the rear Cayman R ARB, then moving to the H&R set up makes perfect sense, and dials out expensive guess work Br Nick