Vwthunders build thread (finally)

**Stuwey** · 14-10-2013, 11:31 AM

Originally Posted by vwthunder

First session out, well the car was not running that well only boosting to 18psi (N75 problem i think) so i took it easy and managed to get a PB on the 3rd lap. Tires felt awesome, really predictable. Had a bit of a miss/stutter going from 3rd to 4th.
Attachment 5626

Did you end up sorting out the boost issue?

As for the track, more practice

**kaanage** · 14-10-2013, 11:50 AM

+ try to find what the optimal 'hot' pressure range is for the tyres (the tyre dealer should know) and make sure you're within the range before any more suspension fiddling. 33psi cold sounds quite high for a semi-slick or even an ultra low profile, high performance tyre.

**vwthunder** · 14-10-2013, 12:15 PM

Originally Posted by Stuwey

Did you end up sorting out the boost issue?

Yes i worked it out

N75 must have been slowly dying. Car has not felt the same the last few months so I cranked the wastegate a little. I was thinking it had come loose and backed itself off, car feelt fine now.

Day before track day N75 only allows 18psi.
Does track day with 18psi
Gavin posts spare N75 (thanks Gav)
Installs spare N75 and car boost like a mofo !!

Guessing i need to back off on the wastegate now

**vwthunder** · 14-10-2013, 12:16 PM

Originally Posted by kaanage

+ try to find what the optimal 'hot' pressure range is for the tyres (the tyre dealer should know) and make sure you're within the range before any more suspension fiddling. 33psi cold sounds quite high for a semi-slick or even an ultra low profile, high performance tyre.

I bought my self a nice gauge last week (to play around with pressures) Should arrive soon !!

**grandturismo** · 16-10-2013, 06:54 PM

Originally Posted by vwthunder

I bought my self a nice gauge last week (to play around with pressures) Should arrive soon !!

Gauge is a great purchase.
I use Hankook Ventus TDs at the track. Cold I have them at 29psi, depending on the track temp they go up to 35-37. 36 hot is the optimum temp for these babies.

I had quite a few boost issues this year. You just know something's not right, especially when Dyno numbers are lower than expected and I'm running about 30psi boost. First to go was the DV! Then replaced the N75 and PCV. I've just done another PCV by the looks of the white smoke I'm getting at WOT. Now looking into getting a few spares and a possible oil pressure system like Accusump that APR have currently. Piece of mind too.

**guile** · 16-10-2013, 07:29 PM

Originally Posted by grandturismo

I've just done another PCV by the looks of the white smoke I'm getting at WOT.

i have one i have just removed from mine mate, only done 18,000 clicks if you need something to tied you over. i was keeping hold of it incase it ever goes back on...

**grandturismo** · 16-10-2013, 08:14 PM

Originally Posted by guile

i have one i have just removed from mine mate, only done 18,000 clicks if you need something to tied you over. i was keeping hold of it incase it ever goes back on...

Should fit right? Yeah that would be great.

**guile** · 16-10-2013, 08:31 PM

Originally Posted by grandturismo

Should fit right? Yeah that would be great.

pm me mate so i don't clog up thunders thread.

nice build by the way, i will be keeping my eye on this as planning to track my car when i can. all the hints and tips i can pick up are a bonus...

**grandturismo** · 16-10-2013, 09:33 PM

Originally Posted by guile

pm me mate so i don't clog up thunders thread.

nice build by the way, i will be keeping my eye on this as planning to track my car when i can. all the hints and tips i can pick up are a bonus...

Sure, and thanks Troy for the use of your thread for this little exchange