BLACK BETTY - An obssesion with Porsche
#49
Hey Frank, superb collection !
Hope to come to UK sometime to check up with L9O !
About this change, I'm a bit confused :
I understand the wish for deeper dished wheels but I'm not sure why it would be a geometry advantage.
I guess you mean with shorter trailing arms, the bearings and wheel hubs would allow more tire on the inside (then allow wider and deeper wheels) without creating wrong efforts, but on road handling pov this should be a lost, as wider rear track is supposed to be an improvment on NB cars, isn't it ?
The wider tires add better adherence, for sure, but create a lot more drag on most other situations, which is a slight counter performance.
I admit the NB C4 rear axle is amazing, I myself never had a chance to make it drift only a little, even on wet roads where on each turn I try harder (open roads, that is, so with a bit of self-preservative instinct I guess)
All choices are compromise, but I'd like to get your pro/cons more detailed on this topic, if you'd like.
Reason I'm asking is because a friend of mine just purchased a 911 SC with turbo look but without the turbo chassis and I suggested him to look for turbo chassis instead of adding spacers to keep reasonably wide tires but rising rear track.
On the front, it's event more important to me to avoid wrong efforts on steering (keep the center of tire where it should be), but that's another story.
Hope to come to UK sometime to check up with L9O !
Quote:
Originally Posted by Mr.Alex View Post
Out of curiosity, are there any other pros/cons to doing NB trailing arms, other than to get a deeper dish?
Quote:
Originally Posted by 18T_BT View Post
Curious as to why you changed the wide body rear trailing arms for NB items? To fit wider wheels/tires?
They were changed for a geometry advantage and so that I could fit deep dish wheels for the RSR look.
Originally Posted by Mr.Alex View Post
Out of curiosity, are there any other pros/cons to doing NB trailing arms, other than to get a deeper dish?
Quote:
Originally Posted by 18T_BT View Post
Curious as to why you changed the wide body rear trailing arms for NB items? To fit wider wheels/tires?
They were changed for a geometry advantage and so that I could fit deep dish wheels for the RSR look.
I understand the wish for deeper dished wheels but I'm not sure why it would be a geometry advantage.
I guess you mean with shorter trailing arms, the bearings and wheel hubs would allow more tire on the inside (then allow wider and deeper wheels) without creating wrong efforts, but on road handling pov this should be a lost, as wider rear track is supposed to be an improvment on NB cars, isn't it ?
The wider tires add better adherence, for sure, but create a lot more drag on most other situations, which is a slight counter performance.
I admit the NB C4 rear axle is amazing, I myself never had a chance to make it drift only a little, even on wet roads where on each turn I try harder (open roads, that is, so with a bit of self-preservative instinct I guess)
All choices are compromise, but I'd like to get your pro/cons more detailed on this topic, if you'd like.
Reason I'm asking is because a friend of mine just purchased a 911 SC with turbo look but without the turbo chassis and I suggested him to look for turbo chassis instead of adding spacers to keep reasonably wide tires but rising rear track.
On the front, it's event more important to me to avoid wrong efforts on steering (keep the center of tire where it should be), but that's another story.
Last edited by ManuFromParis; 08-31-2015 at 05:22 AM.
#50
It's been a little while since I posted, so here's the latest on Susie Q.
Holiday finally came this summer. Bags packed the miss and I headed down to the South of France to stay with friends. Of course we took Susie as she needed shakedown miles, winding roads and mountain top villages made it a no brainer.
We avoided the coast like a plague, that time of year there are too many people and the coastline is pretty much all built up. Instead we favored days carving up tarmac in the quiet mountains, topped with wine and local food.
The car was absolutely faultless, albeit the clutch. By the end of the journey it was slipping all over the place. The KWV3s worked a treat, although I found the base setting was too soft.
Back in the UK the rear wheels intended for the car were rebuilt by friends at Voodoo Motorsport - 12J with a massive 5 inch dish. Whilst the fronts remained 9J. I paired the wheels with a set of medium summer/ track compound Ad08s. Those that follow me will know I'm a big advocate of these tyres - superb. Overall and crucially I've kept the stock rolling radius with my tyre choice.
GTOne were as ever fantastic and squeezed me in to their busy schedule last minute. LWT flywheel and RS clutch were put in and have made a real difference to how the car performs. The lwt flywheel really helps keeps the revs up and gives a good punch.
At the same time I took the opportunity to stiffen up the dampening, suffice to say that with the wider & lighter wheels and wide body track - she is incredibly stable and grippy when pressing on. Finally she handles like I know these cars can.
Next I deleted the cat with a stainless straight pipe. The cat had clearly never been off in 22 years. Persuasion too and angle grinder came out. I took the op to replace the O2 sensor which as you can imagine was probably toast. Likewise was the 22 year old cat, replaced I feel a noticeable difference.
Susie Q was in decent shape, serviced regularly, but never had some proper TLC. All the work that's gone in has really transformed the car. Feels good to resurrect the old girl while I'm her custodian.
Mechanically she's now sorted. The paintwork is in need of attention (bottom sills, grill will be colour coded with 993 door handles and front air ducts), although right now I'm enjoying gathering stone chips and not giving a damn. Following on from the Riviera blue calipers and fan - matching seat belts and rev gauge are next. I'm debating pulling out the seats in favor of lighter Recaro A8s with painted Riviera backs, harness truss and harnesses to match, at some point I'll get her on track.
Tomorrow I leave with some of the European W9O gang for an Alpine tour. Shakedown miles continue...
Cheers,
#53
oh,
i think we`ve been in the same region over the last weeks for vacation :-)
We did the grande-alpes from genf to monaco...
Your Susie`s very nice, but i prefered the look with ruf wheels!
Where are you going for your alpine tour? Austrian?
i think we`ve been in the same region over the last weeks for vacation :-)
We did the grande-alpes from genf to monaco...
Your Susie`s very nice, but i prefered the look with ruf wheels!
Where are you going for your alpine tour? Austrian?
#54
#56
Great writeup Frank she´s a real beaut!
The winter I will also make some upgrade could you reveal what clutch/flywheel you got?
I have given some thoughts here: https://rennlist.com/forums/964-foru...way-to-go.html
The winter I will also make some upgrade could you reveal what clutch/flywheel you got?
I have given some thoughts here: https://rennlist.com/forums/964-foru...way-to-go.html
#57
BLACK BETTY - An obssesion with Porsche
Simply gorgeous. Love the stance and overall look of the car. Envious of your drives! My goodness, to have my 964 on those roads would be a wonderful experience. Working on finding the Mid-western U.S. equivalent and it's not easy!
Thanks for the post/
Thanks for the post/
#58
Wow,
Didn't realize how much you caught the bug. Congrats they are all nice. I am partial to the wide body myself. Looks great and narrow trailing arms with the wide body is by far more stable than either the narrow body or the wide body stock.
So what sized rear tires did you end up with. I am running 295's on 11's but plan to upgrade to 12's next year and was hoping to fit at least a 315.
BTW the long nose is a beauty. I miss my E it was a fun go cart.
Didn't realize how much you caught the bug. Congrats they are all nice. I am partial to the wide body myself. Looks great and narrow trailing arms with the wide body is by far more stable than either the narrow body or the wide body stock.
So what sized rear tires did you end up with. I am running 295's on 11's but plan to upgrade to 12's next year and was hoping to fit at least a 315.
BTW the long nose is a beauty. I miss my E it was a fun go cart.
#59
Looks amazing, that must have been a great road trip - what ride height have you settled with vs RS?
And where does everyone keep finding these A8's - i thought there were only 100 in the world?
And where does everyone keep finding these A8's - i thought there were only 100 in the world?