20 years old Bilsteins or new adjustable Koni yellows? Its not about make, but model and adjustable or not. I like the new shocks as they seem to work well, but thats about it. The new alignment job with a little more camber in the rear may also have played part in a good road holding in the rear. I dunno what did what exactly tbh.
I do know I know have a bit more understeer? That's where your second q comes in :)
Yes, very! The height adjustability and shock adjustment are great to have I think.
Its a pity there isn't a bigger front roll bar, as I would like a little less roll. So I'll probably have to get a bit stiffer front springs (again :rolleyes:). Car is still comfortable enough I feel, so I think its a logical option to try first.

Hope that answered your q? As you see, these things are car-specific and probably rather personal too, so there's really no "always-good-set-up" to be had...

It looks good on track we just need to get you a better in car camera :) Were you going all out or still taking it easy? Looks like you could have taken those corners a bit faster ;) That porsche driver must have been annoyed at best or red-misting at worst, getting passed by a beetle!

For the shocks I vote Koni or QA1 double adjustable rear and a koni double adjustable front. I'm still dialing mine in and I have an autox this weekend to test, but I've been very happy with them so far.

I agree Humble, camera is having difficulty with the contrast (and I forgot to press the compensate button for that..)
_I_ was going all out for my doing, but was a bit carefull (and not skillfull enough) in the corners and not at max boost (tad over 1 bar) and obviously the car can do much more then I dare or am capable of. The 911RS I overtook so easily did run 2 seconds faster on his fastest round and unlike me, he was pretty consistent. That shows to me the car can run much better lap times, its just the driver that lacks at this point...:o

What about moving the inner pivot of the suspension arms upwards?

However, more front rollstiffness will generally tend to more understeer.

Its already on the upper one of the two holes on that bracket...and there's no room to go even higher. Trust me, I've looked, but good thinking and tnx for thinking with me :)
Hmm, I had forgotten about that effect...damn!
The balance is actually pretty good. Its just that the front tires seemed to have suffered more then the rears and on one very tight corner, I wished for a little less understeer, but maybe I should have turned in later there..

It's tough to tell from the photos but the inside front tyre looks a little light in the bends. In other words, the inside front is not planted and the front grip is mostly relying on the outside tyre.

It looks like the outer rear has compressed a bit far leading to the inner front lifting (the diagonal effect). I'd suggest a slightly tighter rear antiroll bar or perhaps ideally, slightly stiffer rear springs. A looser front bar might also work but more lean has other issues.

You could also try increasing the front rebound and see if that helps.

what camber are you running at the front? i found the best set up for mine was to have the rear quite soft and the front fairly stiff.
run 130lb front springs and a h/d bug pack anti roll bar, rear bars are 944 and the 944 anti roll bar. front camber is -3* and rear is -2.5* front toe is set to 0 and the rear has 1.5 toe out.
it will pick the inside front wheel up but at least thats getting as much wieght as poss on the powered wheels which helps combat the wheel spin.
i found that high speed corners were improved when i fitted the front spoiler and splitter and improved again when i fitted the dive planes.
guessing this will all change now i have fitted the lsd.

My set-up and car are probably not really comparable..:
Your rear 944 torsion bars are 23mm. I run 25,5mm (M030) bars.
Your rear 944 anti roll bar is what? 17mm?. I run a 24mm Whiteline anti roll bar in the rear...

My front springs are already 50 lbs up over what Lee send them with. IIRC I now have 350lbs springs...

That why I said each car is so different. Mine is probably so much heavier and therefore needs more of everything I guess.

Wow... you are already running a pretty tight rear.

How about replacing the side and rear windows with Perspex to reduce the high up weight? Or would that cause legal problems with road use in NL?

Like the the "I'll be baack" style glasses :)

http://www.automaxx.nl/userfiles/ima...e3dc62d576.jpg

Also remember this front set up is our fast road not our full on track set up.:D

You found me Bruce :p

and I already have lexan sides (door window, rear sides) and rear window..

Yeah, suspected as much, but really I probably would like this set-up better anyways. It IS after all really not a 'full on track car' either. I drove 2 hours one way to the track, so _some_ suspension movement is desireble still just to arrive fit and be able to 'race' in good spirit ;)

and the very next day/evening I was on 'drive-my-friends-to-be-graduated-son-to-pram duty' :

http://i174.photobucket.com/albums/w...4.jpg~original

running at idle for over half an hour in queue...he was happy though :)
http://i174.photobucket.com/albums/w...5.jpg~original

Looks like you had a fantastic time Walter, thanks for posting the results.

In your opinion, for the type of driving you have done on the long tracks, would you consider adding a limited slip diff ? Or would this potential addition not be worth it ? How about for the drag strip ?

Thanks.

Sandeep

Good question! short answer: YES!
For last monday I didn't really missed it, but then again, I can hardly tell what its like with one.
I have missed it before on the circuit when I mistook inner wheel spinning for clutch slip (the latter it wasnt). Now with more spring and less overhang, I can get away without it or so it seems, but still wished I had it onboard.

For drag racing I really miss a Diff, any diff I would say as I almost always get one-wheel burn-outs which really sucks and is almost dangerous because of the different traction left-right it results in.

If I get a financial break, an LSD from Paul Guard is the first thing on my list 4sure!

Let me post a pick of mine (again :D) for you to look at Wally...

http://i52.photobucket.com/albums/g3...2.jpg~original

very true walter , my car is set up for what are pretty rough [for tarmac] and tight hill climbs sprints. no good having very stiff suspension as the bumps and camber changes mean you need quite a lot of suspension travel.
spend most of the time in 2nd or 3rd on the hills only a few tracks that i use 4th. just about ever track has a 1st gear hairpin so good mechnical grip is needed hence the softish suspension.
hopefully the lsd i have now fitted will improve it even more out of the slow corners but i can see some changes being needed to set up and driving style now its fitted.

Thats what I'am talking about! Did you get the 25%/75% or the 40/60?
Good choice mate :cool:

Someone did a compilation of the Time Attack event:

http://www.youtube.com/watch?v=cU8FT7E3JCg

and here at appr. 0:45 into the vid a drive-by onto the straight in the warm-up session:
http://www.youtube.com/watch?v=ZUMLVx5f9tU

The lesser of the two. They didn't advise too much lock up on the street.

That would be the hardest part for me to decide upon tbh as I do some track time as well plus I absolutely hate the one-wheel burn-outs at drag events (which are dangerous too).

They would do 60% but said it would be too unpredictable on wet ground. And it would wear tires fast. They HIGHLY discuraged 60% for the street. If I can ever get my project going again I could tell you how fun the GT diff is. :rolleyes::lmao:

Wasn't talking about 60%, but 40%
See ^^ ;)

Always good to watch videos from Wally. Thanks.

One of 'those' one wheel burn-outs, this time at Budel june 2011. Won't do this anymore till I got a diff.
http://www.youtube.com/watch?v=1FVs5O3uJoQ

Nice burnout Wally....you made enough smoke so you can´t really tell it was only one wheel :D

Wally POWER

Nice work Wally.

Wally burn rubber not your soul

:eek: wow Very nice burnout!

I hope that was a cheap tyre Wally :)


Back to your circuit handling.... Have you tried measuring your tyre temps after some hot laps? Infrared temp guns are really cheap now and by checking the temps at the inside, outside & middle of the tread you can figure out how the tyre is hitting the road in the bends. If you can find a handling pad to run constant circles until the front tyres start to go off (overheat) you could learn a lot.

Great choice of music in the video. "don't mess with my ducktail"
Very true ! :D

Sandeep

After mentioning I wanted to upgrade the diff, a belgian friend pointed me to a used G50 LSD, which turned out to be a 996 GT2/3 Motorsport unit with asymmetrical 40%/65% ramps.
To say I was pleased afterwards is an understatement :D
There is a risk these are well worn and as this one was stored for 5 years. As if I needed any extra persuation to open up a new part :lmao:

http://i174.photobucket.com/albums/w...anddiff024.jpg

http://i174.photobucket.com/albums/w...anddiff029.jpg

http://i174.photobucket.com/albums/w...anddiff030.jpg

http://i174.photobucket.com/albums/w...montage001.jpg

http://i174.photobucket.com/albums/w...montage003.jpg

Here you can see the asymmetrical part of the diff in the different ramps where the spider gear is:
http://i174.photobucket.com/albums/w...montage004.jpg

These are the friction disks. They are 2.7mm thick and that seems to be a typical value from reading some 911 boards on the matter:
http://i174.photobucket.com/albums/w...montage005.jpg

When I took the first cover off, there was quite some 'spring' pressure from the concave ('belleville') washer that sits at both ends, so I think there is some useage left in this unit.
Not sure if I can just put the washers at both ends over and install this as is. Some say you can as this is an original unit and they have all the same measurements, others say you shouldn't.

It says its made in UK. Do you know who by? maybe they can shed some light on the state of it?

Clive

Apparently, all original Porsche diffs are inscripted 'made in the uk', but I really don't know by who.

Looks like you´ve made a great deal - congrats Wally! Looking at the pics it seems to have very little wear.

It looks a minter to me, no wear on the fixed plates at all, at a guess id say xtrac made it, they subcontract for most trans manufacturers, i watched as my ZF was rebuilt and tested with a torque wrench to the slip point. mine was 25/60. a good find. getting it in there is best.:)

A comment online by paul at Guard suggests the oem is GKN.

However they are often swapped out for motorsport

Nice find Wally! Can't wait to hear about the handling.

Correct i have a couple of lsd,s from early gt3,s also made by gkn, all the best stuff comes from the u.k dont you no that ????:lmao::lmao:;)

To prove Lee's point even more (I hate it when he's right again :lmao:): GKN is a german company that only supplied the friction plates AFAIK. Its only those plates that are '****' as Guard mentioned sometimes, the LSD housing, spider gears and all are whats 'made in the uk'...(afaik) ;)