08-11-2019, 10:21 AM
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#1
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Racer Boy
Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
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Downforce? The only street cars with any kind of downforce are very expensive exotic cars. I'm talking stock vehicles, not the cars that have giant wings tacked on. For most street cars you are talking about lift, or the lack of it.
It's probably a worn out suspension that is your problem. If your shocks are worn out, it could certainly give you a floaty feeling at higher speeds. How many miles are on your Boxster?
The fastest I've driven my '02 is 130 mph, and it felt fine, but I have refreshed my suspension completely.
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08-11-2019, 10:40 AM
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#2
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Registered User
Join Date: Aug 2017
Location: Tucson,az
Posts: 762
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Hi Racer ,83 K ,and NO evidence of any component's being replaced, Handling great at 70-75 after that way loose.
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08-11-2019, 11:01 AM
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#3
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Registered User
Join Date: Aug 2017
Location: Tucson,az
Posts: 762
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Byprodriver,..tires are good,no damage,.but rims have some small mount of curb rash,I will look for a alignment shop ,..Just pushed on the fenders,..bounce's real easy ,.!
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08-11-2019, 02:06 PM
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#4
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Quote:
Originally Posted by flmont
Byprodriver,..tires are good,no damage,.but rims have some small mount of curb rash,I will look for a alignment shop ,..Just pushed on the fenders,..bounce's real easy ,.!
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Try to find a alignment shop that can give you a printout of the alignment settings before & after they align it, and if it needs new struts install those 1st.
__________________
OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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08-12-2019, 06:04 AM
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#5
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Registered User
Join Date: Sep 2012
Location: S. New Jersey
Posts: 1,239
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Quote:
Originally Posted by flmont
Byprodriver,..tires are good,no damage,.but rims have some small mount of curb rash,I will look for a alignment shop ,..Just pushed on the fenders,..bounce's real easy ,.!
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I think you have found the issue. It should be very hard to push down on these cars and get any bounce, at least that is how mine behaves. At 110 I feel absolutely no float. If I have a fullish tank of fuel and at 75 mph when the rear spoiler deploys, the car just gets so planted and I can feel it get very stable.
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2002 S - old school third pedal
Seal Grey
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08-12-2019, 04:25 AM
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#6
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1998 Boxster Silver/Red
Join Date: Sep 2017
Location: 92262
Posts: 3,090
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Quote:
Originally Posted by Racer Boy
Downforce? The only street cars with any kind of downforce are very expensive exotic cars. I'm talking stock vehicles, not the cars that have giant wings tacked on. For most street cars you are talking about lift, or the lack of it.
It's probably a worn out suspension that is your problem. If your shocks are worn out, it could certainly give you a floaty feeling at higher speeds. How many miles are on your Boxster?
The fastest I've driven my '02 is 130 mph, and it felt fine, but I have refreshed my suspension completely.
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Where? 5? 405? 16? 167? I'm trying to think where is there a stretch of road that would be sraight enough to accomodate that speed. Ima former 98444er (not bragging).
130 huh? Sounds like I've another visit to the 210 and an extra 11mph... 
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1998 Porsche Boxster
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08-12-2019, 06:02 AM
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#7
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Racer Boy
Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
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Quote:
Originally Posted by Starter986
Where? 5? 405? 16? 167? I'm trying to think where is there a stretch of road that would be sraight enough to accomodate that speed. Ima former 98444er (not bragging).
130 huh? Sounds like I've another visit to the 210 and an extra 11mph... |
Pacific Raceways. 120 mph at the Ridge, about 125 mph at Portland Int'l Raceway.
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08-12-2019, 10:32 AM
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#8
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1998 Boxster Silver/Red
Join Date: Sep 2017
Location: 92262
Posts: 3,090
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Quote:
Originally Posted by Racer Boy
Pacific Raceways. 120 mph at the Ridge, about 125 mph at Portland Int'l Raceway.
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Ahhhhh. The old S I R. Great memories of the 70's at that place.
Cheers!
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1998 Porsche Boxster
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08-12-2019, 08:59 PM
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#9
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Racer Boy
Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
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Quote:
Originally Posted by Starter986
Ahhhhh. The old S I R. Great memories of the 70's at that place.
Cheers!
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Still a great track! The just repaved the track from turn two to nine, so it's a lot smoother than it used to be.
There are lots of roads in Washington where it would be easy to hit 130 +. It just depends on your tolerance for risk (as in getting busted).
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08-13-2019, 12:06 PM
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#10
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Registered User
Join Date: Aug 2017
Location: Tucson,az
Posts: 762
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Thanks KK2002s....I was kinda surprised that I could push down so easy and just kinda bounce it. need to find a good shop in Tucson,az to get it checked out !
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08-13-2019, 04:38 PM
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#11
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Registered User
Join Date: Aug 2009
Posts: 1,466
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Tracked at a lot of high speed tracks including Pocono raceway. which is scary fast 145 to 152 MPH, VIR 134 to 140 MPH, and Watkins Glen 130 to 135 MPH. The car feel rock solid.
It sounds like you need to replace your struts
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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09-15-2019, 03:29 PM
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#12
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Registered User
Join Date: Aug 2017
Location: Tucson,az
Posts: 762
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Starter it has 84 K..and I am going to have my rims and tires balenced,..hopfully on the car I just had it looked over they said shocks seemed ok, not exactly reassuring ,..I dont think they spent much time with it just a quick once over
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