Where to source EIBACH ball-joints
 

I have had EIBACH front UCA to permit decent camber but have a 6-hour club event coming up in 8 weeks and want to replace the FUCA ball-joints as a preventative measure, but the forum suppliers I have emailed don;t stock the ball-joint as a service item.

Does anyone have any suggestions / URL's I can go to in order to purchase.

As an aside, my car has seen a "lot" of track-day events in the 3+ years I've owned it, car club circuit sprints and the like and the gearbox is now suffering a little (after 70,000 road klics and maybe 3000 klics at race-pace) - the biggest problem is 6th gear syncro .... it baulks consistently and will refuse to shift at anything other than lazy pace once the oil gets hot (say after a 12 lap run at full-noise). On the road, a skip shift from full-noise in 3rd direct to 6th will gernerate a dose of the crunchies every time (like when accelerating the car on a freeway on-ramp to get up to speed and merge) unless it is a really lazy shift. I have been using Motul Gear300 (75W90) in the trans ... does anyone have any empirical evidence of improved shift with heavier oil or do I bite the bullet and put a rebuild kit thru the box.

I could always drop my Holinger 6-speed sequential into the car but it is straight-cut and the noise will be over the top for a DD.

It is worth noting that the NISMO RC specifies Motul GB oil, but does not specify the viscosity - I;d expect 90W140 for enduro and 75W90 for sprint races and nothing I've been doing would qualify as endurance events (upcoming event apart). They also quote 5000klms as gear-box life, but my box has done around half that ...

Do the track day heavies have any feedback (or maybe Doran Racing).

you can check with SPC, as they are the manufacturers of the eibach arms.

Have logged a query via their website but no response yet .. will be patient ...

Have you talked to the dealer about that? I believe Nissan USA has been investigating 6th gear crunches on the Z34. We ran into an engineer last fall who was up from TN to check out a couple in Detroit. Could be that high mileage would exclude you though.

That is the next step ......... car has extended warranty from new - paid an extra $1250 to extend engine and drivetrain warranty to 6 years and 150,000 klics.

ALso, have found a US-based wholesaler who sells the ball-joints .. EIBACH part number 7213025 and have the name of a local company who in theory wil carry the part, or at least who can order from the US wholesaler.