Suspension confusion

[mjb2448]

Ok need some help here before Dennis shows up and I gotta out run it. I have an '04 C4S Cab..now if Porshe et al frowns on the use of the X73 on the cab due to structual differences with the coupe ...is the Euro M030 from Carnewal my only option.?

[Bostonduce]

The X73 is listed for the coupe only, that doesn't mean that some haven't used the X73 on the cab anyway. I am familiar with the TT cab (same body and suspension) and have PM's several that have it installed and they report no issues. Many tell me it is actually better than the stock suspension. I also know of one who reinstalled the stock suspension after only a short while ("X73 too hard"), so YMMV.

The difference is the cab is only about 250 lbs. heavier than the coupe, but I suspect there may be chassis/engine stiffening issues (the stiffer engine mounts included with the X73 kit make me even more concerned). I'm just not sure how the cab will react long term to the X73.

I think all you would gain is about 12-15mm of lowering with the ROW 030 with the same damping rates. The X73 lowers about 25mm, but also has different damping rates, hence its billing as the "factory racing suspension".

I'm not totally happy with the stock suspension on the TT, but I haven't answered all my questions concerning fitting the X73 to the cab. I've been told by one of the online OEM parts dealers that there is a cab version of the X73 on the way, but that doesn't make sense to me since the 996 series has been replaced.

Most tuners in my area want to install the PSS-9, but I think it may be because they make more $$ for that installation (really needs a corner balance to take maximum advantage of it).

If you have any other information, I would love to hear it.

Regards

BD

[ar38070]

Re: PSS-9

While desirable it is not absolutely necessary to corner balance the car after install especially if the car is not taken to the track. Even if the corner balance is done it does not cost that much extra, about 2 hours of labor. Also you would not want to corner balance the car immediately after install as you should let the new suspension settle in for a little while anyway before the corner balance.

The additional advantage of being able to tweak the ride height to suit your preference and being able to adjust the shock settings too may make the PSS-9 preferable of the Porsche options to some people.

[Bostonduce]

ps. on the PSS-9; It is a 'coupe-only' part number also.

ar; I agree with all you say, however I've been told that corner balance would take 4-6 hours, excluding alignment, and I've heard of people being charged for 8 hours of labor for a CB and align. Must be the east coast thing.

Regards

BD

[ar38070]

I suppose it could take that long but it should not. The issue is whether or not you track your car. If you do not then it really is not necessary as a street car does not have a consistant weight distribution, i.e. do you have a passenger, do you have stuff in the trunk, do you have stuff in the back seat, etc. all of which will throw off a corner balance.

Even in a car that is tracked the corner balance is a compromise as the car will balance differently with a full or empty gas tank, which is why you normally corner balance with half a tank.