997S Track Mods

[johnag007]

Hello,

Have a 997S, tracked it 5 times this year, got my British Racing License (3 full days' worth of teaching), nothing else though.

I get an instructor to any new circuit, but I do not feel 100% about my PASM setup: it feels somewhat "artificial" (someone used the words bouncy on this forum, I agree it is weird) and not as confidence inspiring as the 968CS on a racing setup I was in. I would dearly love to get Sports Suspensions or a GT3 but I have a family, so no way, what you guys recommend in terms of mods? Existing specs include Short Shift + PSE.

1- Which suspensions bearing in mind I have a family, and therefore would prefer to keep some kind of switchable setup

2- Do not really need more power, but would not mind either if I can achieve it easily!

3- Read brakes need changing, should I stick to the OEM setup or look at something new for all 4s?

As I live in London but travel to Frankfurt often, I would like to try out the mods myself, basically I do not know where to start.

Sincerely,

JAG

 

[Geoff_Fields]

Try contacting Rob Loggie (rob9972s), he has some -20mm Techart springs for sale with only 2000 miles use. He has a email link on his profile page.
Other mods - Strut brace, 6 pot front brakes (I can recommend supplier if you email me), track day specific tyres (corsa's).

 

[Dapster]

2- Do not really need more power, but would not mind either if I can achieve it easily!

Easy - book it into your OPC for an X50 Powerkit option, easy as pie but not sure tha your wallet will enjoy Xmas.....

 

[mbrands]

I am no suspension expert, but maybe ask someone (who is knowledgeable about this stuff) about changing the roll bars to something thicker. My impression of the regular setting on PASM was that it was too soft, but that is was otherwise balanced. Then when switched to firm mode it became bouncy, almost as though the suspension was firmer than it should be. As I drove it more, I was thinking, what this car really needs is slightly softer springs to absorb the bumps better, but thicker roll bars to stop it leaning in the corners (which is exactly what the sports suspension delivers). My theory was that they were using the firm setting to not only firm up the damping, but also to somehow simultaneously compensate for not having thicker roll bars to go with the firmer setting (the roll bars seemed to be more matched with the softer setting). So the dampers are in effect doing two jobs, damping and compensating for the roll bars, which somehow translates to bounciness. I think IIRC, that BMW uses automatically adjusting rollbars on some of its performance cars with that have variable suspension settings (ie the M5?), so that if you go firmer on the damping the roll bars go firmer too.

Anyway, this is just a theory and as I am no expert on this, I could be completely wrong, so feel free to correct me if I'm talking rubbish, as no doubt someone will [][].