Acquiring Sydneykid Suspension Setup

[djr81]

B6 (which is the B46 part number) are great shocks. B8 are the next step up in quality. Hard to say how much better they could be than the B6s, seeing as the B6s feel so nice and work so well. But Bilstein aren't in the habit of telling us lies, so they must have something over them. I agonised a bit over the choice - read the Bilstein website a fair bit, and decided to save the money involved iin stepping up to B8.

From Bilstein:

What difference is there between BILSTEIN B6 Sport and BILSTEIN B8 Sprint shock absorbers?

The BILSTEIN B6 Sport is a mono-tube gas pressure shock absorber designed to dampen wide-ranging vibrations very precisely. Where an oil shock absorber produces an oily foam and creates a spongy driving feeling after a very short distance, the BILSTEIN B6 Sport remains constant, precise and stable. The BILSTEIN B8 Sprint is a mono-tube gas pressure shock absorber specifically designed to be used with lowered vehicles with shorter stroke. It also offers the same advantages as the BILSTEIN B6 Sport shock absorber.

[niZmO_Man]

recommended spring rate for mostly street use with spirited driving on backroads?

Look up Nismo S-Tune spring rates.

[chiksluvit]

From Bilstein:

What difference is there between BILSTEIN B6 Sport and BILSTEIN B8 Sprint shock absorbers?

The BILSTEIN B6 Sport is a mono-tube gas pressure shock absorber designed to dampen wide-ranging vibrations very precisely. Where an oil shock absorber produces an oily foam and creates a spongy driving feeling after a very short distance, the BILSTEIN B6 Sport remains constant, precise and stable. The BILSTEIN B8 Sprint is a mono-tube gas pressure shock absorber specifically designed to be used with lowered vehicles with shorter stroke. It also offers the same advantages as the BILSTEIN B6 Sport shock absorber.

B8 is essentially the same thing, just a shorter stroked version

There's no b8 for r33 Gtst but I find b6 to be a bit hard coupled with tein mediums @ 4.0kg front and 4.5kg rear. Have used Whiteline springs before and they felt much more compliant on the crappy roads in sydney

Has anyone successfully done an adjustable coilover conversion and fitted ~8kg spring? Any revalving required for that rate seeing that they're pretty stiff already?

Edited October 31, 2014 by chiksluvit

[djr81]

Probably in the range where you would look at revalving. Best to ask Bilstein and share the results.

[chiksluvit]

Hrm I just had mine dynoed and rebuilt a couple of months ago so it'll be a while before I do anything, thought I'd ask for reference's sake in case anyone or myself want to do this down the track

Wasn't too exy to rebuild them either, prices are very transparent though the additional cost in converting and revalving them is worth as much as a set of BC/MCAs

[djr81]

Out of interest do you have the graphs and or the shim stack details and would you be willing to share.

I have floating about the acceptable range for the Bilsteins for an R32 GTR but not for a GTST. Will post them when I find them.

[chiksluvit]

happy to share the graph but I'll need to dig it up first, will look for it tomorrow.

Keen to get some opinion on this as well

Don't know if GTR and Gtst valving is THAT different? Front suspension is physically different so valving maybe different to accommodate for it. but since bilsteins work on a wide spectrum they may not even have to bother with different valving?

Edited October 31, 2014 by chiksluvit

[chiksluvit]

And here is the dyno chart

This is for the front, also explained why it needed a rebuild

Edited November 1, 2014 by chiksluvit

[djr81]

For as R32 GTR with Bilstein shocks, from Bilstein.

The front shocks, if they are as per factory spec, will support a spring

rate of about 10kg/mm. While the rear, again at factory spec, will support about a

6kg/mm spring.

[chiksluvit]

Ok wow

So going by the shock dyno chart for the r33 Gtst above- how high a spring rate do you think this can support up to?

[GTSBoy]

Would be very similar. They're basically the same thing.

[chiksluvit]

Thank you

[simpletool]

B8 is essentially the same thing, just a shorter stroked version

There's no b8 for r33 Gtst but I find b6 to be a bit hard coupled with tein mediums @ 4.0kg front and 4.5kg rear. Have used Whiteline springs before and they felt much more compliant on the crappy roads in sydney

Has anyone successfully done an adjustable coilover conversion and fitted ~8kg spring? Any revalving required for that rate seeing that they're pretty stiff already?

There is a thread on here with part numbers, pricing and pictures about a coilover conversion. I had the king springs, wanted harder and went the tein mediums (4kg, 4.5kg). Found then Tein were at least as comfortable on Sydney roads as the King springs even through firmer. Issue was the front sway was on hard and the rear on medium to counter the firmer rear spring rate. Found that the best option was tein front and king rear combo! <<I still think that is the best pure street/comfy combo. Then I ordered threaded sleeves for the front and bought 5kg Hyperco 2.5" ID springs and paired with the Tein rear spring. Run medium/medium on the sway bars, pretty good balance.

Now have on order the 5.5kg front hyperco springs. Not 100% on how the Bilstein will handle a 5.5kg front without revalving but they handle the 5kg pretty good but I think the rebound could do with being a bit higher.

Local prices for rebuilding, revalving, sleeves and springs is over double USA pricing. Sometimes triple.

threaded sleeve how-to: http://www.sau.com.au/forums/topic/374385-bilstein-coilover-conversion/?hl=+bilstein%20+sleeve

Edited November 5, 2014 by simpletool

[chiksluvit]

Yup followed this thread when it was first created, was very informative

[omnigear]

There is a thread on here with part numbers, pricing and pictures about a coilover conversion. I had the king springs, wanted harder and went the tein mediums (4kg, 4.5kg). Found then Tein were at least as comfortable on Sydney roads as the King springs even through firmer. Issue was the front sway was on hard and the rear on medium to counter the firmer rear spring rate. Found that the best option was tein front and king rear combo! <<I still think that is the best pure street/comfy combo. Then I ordered threaded sleeves for the front and bought 5kg Hyperco 2.5" ID springs and paired with the Tein rear spring. Run medium/medium on the sway bars, pretty good balance.

Now have on order the 5.5kg front hyperco springs. Not 100% on how the Bilstein will handle a 5.5kg front without revalving but they handle the 5kg pretty good but I think the rebound could do with being a bit higher.

Local prices for rebuilding, revalving, sleeves and springs is over double USA pricing. Sometimes triple.

threaded sleeve how-to: http://www.sau.com.au/forums/topic/374385-bilstein-coilover-conversion/?hl=+bilstein%20+sleeve

what are the setting when you revalve the shocks? I'm still not sure what spring stiffness I should get, the Teins I have now is Poop it bottoms out when going over speed bumps.