Finally got round to finishing my bias brake set up

[Chris Wilson]

Pics of that, and my recently acquired and rebuilt Eibach triple adjustable dampers, are at http://chriswilson.tv/bias/bias.html

Something very similar could be fabbed to use on a 200SX. Note you must have beefir than stock brakes to do this.

If anyone can recognize the make of the cat back exhaust in the pics I'd be obliged, cheers

[SM]

Is your boost gauge big enough :wack:
http://chriswilson.tv/bias/DSC02639.JPG

Remote res. on the coilovers :cool: triple adjustment? bound, rebound and ??????

Looking forward to seeing how your brake setup works on the 20th :thumbs:

[Chris Wilson]

That's my small one.... I keep the big brass one for diagnostic stuff :)
High speed bump, slow speed bump, and rebound. 3 way are now passe, any self respecting techno junkie has 4 way on their single seaters these days!

I should be in the Zeus on the 20th, not the Skyline.

[SM]

I should be in the Zeus on the 20th, not the Skyline.
:cry: and that has only 1 seat, I was hoping for that passenger ride.

[Chris Wilson]

If the Skyline manifold holds out I'll run it again, but I have my doubts, cracks don't get smaller. I won't have time to fab up piping for the other manifold, and the Zeus will seize up through lack of use if I don't get it out soon!

[gonzomagic]

Aston Martin Calipers?

[SM]

Aston Martin Calipers?
and Porshes rears


I'd be wanting to use the Zues too ... as often as possible :cool: :nod:

[Chris Wilson]

Porsche (Brembo) Le Mans fronts, Aston DB9 (Brembo) rears. Beggars can't be choosers, it's what I found at the right sort of money with sensible pad and piston areas :)

[leelee]

chris , what would the effects be of too much bias to either front or rear?

[Chris Wilson]

Too much front bias and the front brakes will lock up early, too much rear bias and the rears will lock up before the fronts, which is scarey and very de stabililising. production cars always have more than the optimum amount of front bias, (or not enough rear, if you prefer), as manufacturers do not want a scenario of the backs locking first whatever the road conditions or weight distribution in the car. This is especially noticeable in the wet, where more rear bias needs to be run to optimally dial in the bias. You can make a big difference to overall stopping power with bias brakes, and they are a Godsend in the wet.

[leelee]

so you would recommend a little more rear bias than usual then for the track in dry conditions?

[SM]

Probably why the Z32 rear brakes on a S14 make such a differance without causing problems.

[leelee]

yeah, i was thinking this as pretty soon i'm gonna have R34 GTT 310 disks and calipers on the front

I think i need biggers as well then :nod:

[Chris Wilson]

so you would recommend a little more rear bias than usual then for the track in dry conditions?

You need to experiment. If you have a rear brake bias control valve (sometimes a valve on the master cylinder, sometimes rear ride height controlled under the car), you could bypass it and a fit a manaully controlled in car one. You MIGHT find you can get away with none at all. You need to take great care though, as I said, a car with too much rear bias will swap ends in a panic braking manouvre, very easily. That's precisely why makers err on too much front bias. That allows for different tyre makes front and rear, differential tyre wear, boot and fuel loads, road conditions, inclines, blah blah.

[leelee]

cheers for the info chris, looks like I need to get playing then :thumbs:

[Chris Wilson]

If I can help you only need to ask.

[leelee]

well as kev said your coilovers/suspension look pretty smart, could you clarify what benefits that kind of setup has over normal coilovers? is it just more adjustability? and is it really needed on a track, as surely the road surface is all nice and smooth?

As a trackday novice, information is power :nod: At the moment I just have uprated shocks and lowering springs , which I am being to feel is far from ideal. Coilovers look to be the way ahead. Although with the strut braces and arbs, i'm not leaning a massive amount more than the s14's with coilovers. I'd like to know what you would recommend suspension wise?

cheers for the info chris :notworthy