Boge (plus Eibach springs) vs Bilstein
01-28-2008, 06:08 PM
#46
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Early upper A-arm is 19mm longer (the angled ball joint somewhat makes up for this). Early lower A-arm is 12mm longer. Lower shock mount is in the exact same position. I'm not sure if there is a difference in hub face location.
03-11-2008, 09:56 PM
#48
Track Day
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Just a quick update.
I ended up going with the Bilstein's. I can't compain about the ride. Feels right to me. Of course, the shocks that were on it were completely shot. Need to get to a track to really feel how well they handle through the corners but so far, no complaints. Need to take a ride in Matt's who has the boge's to see if there is any appreciable difference.
Michael
I ended up going with the Bilstein's. I can't compain about the ride. Feels right to me. Of course, the shocks that were on it were completely shot. Need to get to a track to really feel how well they handle through the corners but so far, no complaints. Need to take a ride in Matt's who has the boge's to see if there is any appreciable difference.
Michael
03-12-2008, 05:40 AM
#50
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Since this thread popped back up I thought I'ld had my 1st hand experience of a straight swap from Club Sport springs (130k miles old) with Bilstiens (30k miles old) to New Eibachs and new Bilsteins
I'll start by saying that over 30k miles I don't believe the bilies had reduced in effectiveness at all, so the new bilies from old bilies should make no difference.
So impressions
comfort;
over gentle ripples or concrete pavement joints the E's are softer (due to the progressive rate no doubt) like they abosrb ripples the CS's would transmit.
when you hit a big pothole the E's are a bit harder but not as much as the nearly 2x spring rate would suggest.
Handling
on crap roads like most of them are when you get out in the twisties here in OZ the E's are miles better - their ability to soften the initial bump seems to stop the shock being overcome by the rapid rate of movement that the non progressive CS spring would transmit thus keeping shock within the limits of it's ability to cope.
on smooth roads - well I don't know the answer to that as the only smooth roads are the motorways and the bends in those would require immediate license removal speeds to test out (and very probably removal of sensitive parts of my anatomy, along with deportation.)
HTH
Oh FWIW even the GT (which now has three legs with CS springs and 2nd hand Billies and one front leg with a broken S4 spring and Grey gas boge - I will find the time to do the last leg) seems to handle better compared to it's Rolls Royce Shadow II floating carpet ride before. For those who haven't driven a Shadow II i imagine it's similar to a Cadillac, '70s era.
I'll start by saying that over 30k miles I don't believe the bilies had reduced in effectiveness at all, so the new bilies from old bilies should make no difference.
So impressions
comfort;
over gentle ripples or concrete pavement joints the E's are softer (due to the progressive rate no doubt) like they abosrb ripples the CS's would transmit.
when you hit a big pothole the E's are a bit harder but not as much as the nearly 2x spring rate would suggest.
Handling
on crap roads like most of them are when you get out in the twisties here in OZ the E's are miles better - their ability to soften the initial bump seems to stop the shock being overcome by the rapid rate of movement that the non progressive CS spring would transmit thus keeping shock within the limits of it's ability to cope.
on smooth roads - well I don't know the answer to that as the only smooth roads are the motorways and the bends in those would require immediate license removal speeds to test out (and very probably removal of sensitive parts of my anatomy, along with deportation.)
HTH
Oh FWIW even the GT (which now has three legs with CS springs and 2nd hand Billies and one front leg with a broken S4 spring and Grey gas boge - I will find the time to do the last leg) seems to handle better compared to it's Rolls Royce Shadow II floating carpet ride before. For those who haven't driven a Shadow II i imagine it's similar to a Cadillac, '70s era.
03-12-2008, 11:09 AM
#51
Burning Brakes
Just a quick update.
I ended up going with the Bilstein's. I can't compain about the ride. Feels right to me. Of course, the shocks that were on it were completely shot. Need to get to a track to really feel how well they handle through the corners but so far, no complaints. Need to take a ride in Matt's who has the boge's to see if there is any appreciable difference.
I ended up going with the Bilstein's. I can't compain about the ride. Feels right to me. Of course, the shocks that were on it were completely shot. Need to get to a track to really feel how well they handle through the corners but so far, no complaints. Need to take a ride in Matt's who has the boge's to see if there is any appreciable difference.
Who did you get your alignment from? I thought I had a place in Wheatridge, but the first thing they did was jack the front end up--after I told them at least five times not to, and they said they wouldn't...
Matt
03-12-2008, 01:56 PM
#52
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I used alignment master based on the recommendation of some Denver 928 owners. I'm not sure anyone knows how to do it properly with the exception of a porsche shop.
As for springs, I stayed stock. I did replace the tie rods. Therefore, I essentially have a completly new front end suspension (ball joints upper / lower were done previously).
Michael
As for springs, I stayed stock. I did replace the tie rods. Therefore, I essentially have a completly new front end suspension (ball joints upper / lower were done previously).
Michael
