Newbie with clutch problems.

[En_One]

Hi, I just recently purchased a Skyline GTR Vspec. I have some problems which I don't know what's the cure or what causing it.

The problems are:

1. The clutch didn't make very loud rattling noise when the clutch is released (barely noticeable) when I got it 2 days ago, but last night after a hard launch, I floor the pedal 100% and the clutch feels slipping a bit on the top end, but after the 2nd try, I just floor it 70% and the clutch didn't slip at all (I launch at 6000 rpm). After the run, I realised that something funny happens. The rattling noise when I release the clutch is getting louder (on the 1st gear and 2nd gear only), is that normal? make a bit funny noise, the previous owner said it use ceramic racing clutch from Excedy. I do realise that racing clutch usually are noisy, but as when I bought it, it didn't sound that loud, and after last night I'm a bit worried.

2. I use AVCR on the car, however it was set at 0.9 bar, and after the run I check the peak boost was recorded 1.0 bar. Is this normal?

3. What is the best oil for engine and gearbox, brake, etc I can buy? The car has HKS pistons. Can anyone help me with the grade and brands?

I would be very happy if someone can give me opinions or suggestions.

Cheerz,

Pete

[Sumo]

1. Sounds like a thrust bearing, a pretty cheap part to replace, but is labour intensive..... may aswell replace the clutch whilst its getting changed.

2. No Idea

3.

Engine - Something Fully Synthetic.... I use Caltex Havoline

Gearbox - Redline oil for sure

Diff - a fully synthetic LSD oil.... I use the one shell make

Brake - Dot 4 i think it is.... I just use the caltex brand but you can pay through the arse for HKS items im told.

Cheers

Sumo