996tnz

Nice segue back to Porsches!

Luke944

Video of Larry from Ammo NYC putting some Big Reds on his 964. He's like a kid in a candy store!

https://www.youtube.com/watch?v=-1Sw5uwtn44

racoguy

I could do that for a fraction of Haslers price.

shiraz

Good evening all, apologies Macca & Doug for not yet replying to email regarding Sth Is Tour. Am having a troublesome week - had a problem changing gear last corner before home after 160 km trip ( so warm ), Down changed 6-5-4-3 double de-clutching/h'n't, then couldn't change back up into 4 or 6 - grinding gears . Had an AGM all day yesterday & spent most of today searching internet for similar problems. Mostly incomplete posts - problems not solutions.
Have come to a shortlist of: 1 - shift fork?
2 - trans or engine mounts?
3 - shift linkage , ball cups/ bushings etc
4 - synchro on 4 & 6?
No prob engaging 1,2,3 or 5. Lever not wanting to go into lower plane (4 / 6 ).
Will take for a ( very ) tentative drive tomorrow.

Macca & Doug - would love to partake, but am not able to plan that far ahead - will be in contact.
Cheers - David

John McM

John, are you doing body work in your new business? I ask because I want to sort out my bonnet (creases where it was shut on a full load) and driver door (crease where the check strap was broken and it opened too far). I'm in no particular hurry.

Macca

No problem Dave.

Sounds like the shift fork/ slider I'm afraid. 4/6 on same plane. If you are opening up the box o do this you will be advised to tackle synchro so 2/3/4 as well as the labour is virtually the same. Probably look at all the usual wear items in there as its done hat 150k km probably without any attention? Not a cheap job but could be worse as replacing gear sets are 2k a pair on their own!! Definitely worth chasing down the simple possibilities first such as linkage, mounts etc. I'm sure Kip could help or Glynn in CHCH...

Macca

I reckon you would have a lot of demand for that service around these parts John!!

Pel

John, will give you a call tomorrow, I'm out Glen Eden in the arvo so could swing by after.

Macca

It's fun to watch. Did this myself last year but using the larger rear rotors and endless mx72 pads (silent) which accept the factory pad wear sensors (a waste of time really for regular track attendees). Interesting to see he has the same brake vent kit. Jealous of the 3.8 upgrade. That's definitely on the list for the future...

John McM

I read somewhere many years ago that there was a potential problem installing larger calipers with the amount of fluid needed to be moved being larger so the movement when the pads wore down could exceed the system capacity and impact on braking performance. I don't think it was mentioned there.

Macca

Never heard of that one John. Could be a C4 thing? There are no issues on the 993 C2. Only potential issue is changing brake bias away from factory ratio (much larger rear disk swept pad area). Best way to compensate this is to use a less aggressive rear compound. My idea was to start with MX72 all round and replace fronts with more aggressive ME20 when the old pads were done. However we measured the wear last week at less than 1mm Front & Rear for 5000 touring km + 3 Day Targa Tour + 3 track days so by my reckoning it may take a few years for me to work through the front pads!! I can hand on heart say that with Castrol SRF, Endless MX72, Big reds (993 Turbo fronts and 993RS with larger pistons rear), no backing plates, braided steel lines, fully plumbed and directed Techart brake cooling kit the brakes on the 993 are equally as good as those on the 991 GT3 (380mm 6 pot fronts and 380 4 pot rears). Mind you they have 130kg less to stop too. After a proper suspension set up I would advocate brakes for any 964 owner wanting to make quick progress around the track...

John McM

Seems like only some upgrades need it. "Some people notice when upgrading to larger brakes that the brake pedal travels a bit further after the upgrade. For most, this isn’t a problem. However, when used with the larger calipers, it’s possible that the 964 master cylinder won’t have the reserve capacity to deal with air in the brake fluid or boiling brake fluid. To address this, installation of a larger master cylinder is recommended when installing larger piston calipers".

A great article http://www.964uk.com/Documents/Pano%...cle%202005.pdf

RS ZWEI

RUFOFF for sale in the UK:

http://www.classiccarsforsale.co.uk/...ruf/911/127302

Macca

Its the car that keeps on giving....

gt38088

thing is when upgrading certain components out of a system there are always consequential impacts on the rest of the system. I looked at taking out the brake booster on my rally car to get more feel in the system (outright braking power not the issue) but then would need greater leverage from the pedal in order to have acceptable effort levels. only 2 ways to get more leverage - either bigger master cylinder or go to a pedal box with greater leverage or both. with a bigger master cylinder and bigger piston diameter you get more dead pedal movement at the top of the travel which most ppl don't want. Again the negative consequential impact. In the end I haven't done anything