Discussion
A while back I read an article covering an exceptionally rare 964 RS with 4x4 fitted. They were going to run a race series but backed out in the end.
My question is this: will the 4x4 version be safer at the limit over twisty country lanes? Or will it be just as prone to leaving the road backwards as it's rear wheel drive cousin?
I don't suppose anyone here has ever sampled this ultra rare RS variant, but those who have owned both regular 964C2 & C4's would have a good idea.....
(Might make an interesting project to build up from a C4)
My question is this: will the 4x4 version be safer at the limit over twisty country lanes? Or will it be just as prone to leaving the road backwards as it's rear wheel drive cousin?
I don't suppose anyone here has ever sampled this ultra rare RS variant, but those who have owned both regular 964C2 & C4's would have a good idea.....
(Might make an interesting project to build up from a C4)
http://tinyurl.com/4g7hc this is a photo of one that recently sold in the US I know of one other for sale.
4x4 porsches are not that well loved because not many people understand the benafits and hard core track fans see the road cars as lacking feeling these cars were very different but had no place to run
I think one ran in the mod prod class at Pikes Peek and there is a replica made from a C4 for sale as a Rally Car again in the US.
PS Vic there is a nice looking R on the above web site as well.
4WD said:
My question is this: will the 4x4 version be safer at the limit over twisty country lanes? Or will it be just as prone to leaving the road backwards as it's rear wheel drive cousin?
I suppose a 4WD vairiant would be less prone to oversteer.
However the 4WD 964, like for like, will always be heavier because of the extra weight of the extra drive components and typically suffers greater transmission power losses. Hence all the time when a 2WD car is not suffering from a lack of traction the 4WD car will be slower. 2WD 911s do the traction thing quite well.
I had a 964 C4 a few years back, great road car and very safe, but the fixed torque split caused it to understeer under power when cornering fast. The 993 and 996 C4s are much better as the torque split is variable. The weight penalty for the 964 cars was 100kg, which reduced to 50kg for 993 and 996.
My choice would be a rwd for track, but a 4wd for street use.
Guy
Having seen the BB car, it is very much an RS, there was next to no interior trim and even had fixed plastic side windows with sliding vents fitted.
I probably have the details somewhere, but it may not have the standard 964 4wd drivetrain.. I am sure there were 2 prominent levers sticking out of the middle of the dash to alter the front/rear drive bias.
The car is almost 1/2 way between a 959 rally car & 964 C4.
I probably have the details somewhere, but it may not have the standard 964 4wd drivetrain.. I am sure there were 2 prominent levers sticking out of the middle of the dash to alter the front/rear drive bias.
The car is almost 1/2 way between a 959 rally car & 964 C4.
clubsport said:
I probably have the details somewhere, but it may not have the standard 964 4wd drivetrain. I am sure there were 2 prominent levers sticking out of the middle of the dash to alter the front/rear drive bias.
The car is almost 1/2 way between a 959 rally car & 964 C4.
All correct -having had a VERY close sniff around it at Highclere a few years ago -fascinating vehicle!!
Please don't start the C2 v. C4 debate again......
Rgds
Mel
The C4 RS was a bit of a white elephant. On the track 4WD cars aren`t that good because of the increased understeer, (incidentally if you are looking to buy a road car ignore all this and buy which ever is the better individual car rather than specify C2/4 there are more differences between individual cars (especially 964/993), than between C2/4 per-say).
In theory the 4wd would allow power to be transferred to the track without spinning the wheels but at the risk of upsetting everyone a normally aspirated 911 isn`t exactly going to rip the ground from underneath it, you have no chance of laying rubber in a straight line, especially booted up with slicks.
On the loose stuff it`s an all together different kettle of fish where getting the power down on gravel or dirt makes 4WD rally cars an excellent choice. You do of course have to make them corner but that`s why Mr Mc Rae had a computer game named after him !
The C4 RS however wouldn`t last 3 minutes on a rally stage, notwithstanding the lack of ground clearance the occupants would stand more of a chance of survival attempting re-entry from orbit in the car. The suspension is so hard their brains would rupture with the shaking on a rally stage!
Henry
In theory the 4wd would allow power to be transferred to the track without spinning the wheels but at the risk of upsetting everyone a normally aspirated 911 isn`t exactly going to rip the ground from underneath it, you have no chance of laying rubber in a straight line, especially booted up with slicks.
On the loose stuff it`s an all together different kettle of fish where getting the power down on gravel or dirt makes 4WD rally cars an excellent choice. You do of course have to make them corner but that`s why Mr Mc Rae had a computer game named after him !
The C4 RS however wouldn`t last 3 minutes on a rally stage, notwithstanding the lack of ground clearance the occupants would stand more of a chance of survival attempting re-entry from orbit in the car. The suspension is so hard their brains would rupture with the shaking on a rally stage!
Henry
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