993 RS 8/32 KING AND PINION

[RIVIERAM002]

can anyone advise what parts I would need to replace the 8/32 king and pinion in the rs, and put back to standard,
are the parts common to the 993 or specifically manufactured for the 993 rs ? Thanks.

 

[Nick Moss]

The PET and 993RS tech specs show the standard 31:9 diff being common with the base 993. All you should need are the ring and pinion set, plus whatever adjusting rings are needed to get the backlash right. What are you doing with the 8/32 set?

 

[RIVIERAM002]

Hi Nick, we can sort something out if you are intetersted, we met at that Indian restaurant near Silverstone, I was with
Tom Schmitz, you can email me raresoul@blueyonder.co.uk cheers Steve

 

[paul howells]

The parts will set you back around 1200,plus box strip down.All as per 993.
The 8.32 is Known to wear out quickly,and also prone to breaking because of the one less tooth/slot on the pinion,some were changing as often as every year after a good track day season.

 

[RIVIERAM002]

ORIGINAL: paul howells

The parts will set you back around 1200,plus box strip down.All as per 993.
The 8.32 is Known to wear out quickly,and also prone to breaking because of the one less tooth/slot on the pinion,some were changing as often as every year after a good track day season.

thanks for that Paul, dont suppose you would have the part numbers available ?

 

[zub]

I've just ordered one from FVD in Germany through their UK agent Powermarques. Cheaper than quoted by Porsche Motorsport

950 302 911 24 8:32 crown wheel and pinion £1,010999 052 227 00 bearing £192 This means I have a 9:31 spare if you want it (I actually have two spares) so contact me if you're interested. It does make the car accelerate like something else, but makes the transmission noisier than before. Z

 

[Nick Moss]

ORIGINAL: RIVIERAM002

Hi Nick, we can sort something out if you are intetersted, we met at that Indian restaurant near Silverstone, I was with
Tom Schmitz, you can email me raresoul@blueyonder.co.uk  cheers Steve

Hi Steve
Good curry huh? I will pass on the C&P after Paul's comments.

 

[paul howells]

Sorry dont mean to put you off,you just need to keep a eye on them.In the race cars its a little differant as they get checked often.
Also not best for driving to spa or ring etc,a friend drove his car to the ring with one and said never again,noise, fuel consumption and high revs on the engine all of the time.

Zub
Hows the engine coming on,ready for the dyno then,good luck with it.
I have requested to steve about the rsr going in class 3 with a weight penalty,as the open is turning into a 996/997 cup car race.

 

[zub]

ORIGINAL: paul howells

Zub
Hows the engine coming on,ready for the dyno then,good luck with it.
I have requested to steve about the rsr going in class 3 with a weight penalty,as the open is turning into a 996/997 cup car race.

Gearbox and engine done, going back in the car soon, then it needs to be dynoed. I am hopeful it will be a very special engine! Only thing now is I will need to learn how to drive it...

Having done class 3 this year and won every race I entered in a 993 Cup, I think I'd rather do class 2 in the RSR where there will be more competition and I want to race on slicks rather than Cups. If Class 3 was changed to slicks and we had more competition then I'd be happy with running the RSR with a weight penalty, but as it stands I'm not convinced it would be that much fun racing a 1,100kg RSR with a ???kg 928S4 or 964RS.

Z

 

[jimmyslr]

ORIGINAL: paul howells

I have requested to steve about the rsr going in class 3 with a weight penalty,as the open is turning into a 996/997 cup car race.

Paul - that would be an outrage[]. I am getting worried about racing Z's RSR in class 2 once it arrives with rebuilt engine and having been on a diet; I'll need to spec up my GT3 to compete. A 993 RSR would murder everything in class 3. That being said, when I drove my 993 CS in class 3 earlier in the year, the class 1 and 2 boys do seem very fast. I wonder if class 3 as currently structured has had its day now the cars at the front of the grid are getting faster and faster.

james

 

[paul howells]

Ah but it would be good racing other rsr etc,some of the cup cars are running 330bhp,and are lighter/narrower.
I am talking about 340/350bhp rsr as standard cars,the weight is a little more than a 993 cup car if running big brakes etc
So with a weight penalty it should equal things up a little.Some of the 996 cars also run weight,and it has not been that competative in this class also.
I think the open regs do need some revision,its not just bhp,its also drag,gearboxs and new mich cup slicks,which all add up to a fair gain in time.A 993 rsr even with 400bhp will not stick with most 996 cup cars,500 bhp is needed,now what about a nice little V10 slotted in the rear.
Look forward to racing against you both next season,we are looking to a few more races with the gt90 if it takes off for next year.Sound like we will need to make sure our car is uptogether then !If we can get a few cars together,it would make the euro rounds a more feasable race series.4 or 5 cars in a big truck and service crew etc

 

[ChrisW]

Doesn't 9M have a 4 litre engine which in ultimate tune, will give you 450 bhp naturally aspirated ?

Or does Colin keep that one to himself ?? !

 

[paul howells]

still not quick enough for a 04 on cup car.

 

[jimmyslr]

ORIGINAL: paul howells

Ah but it would be good racing other rsr etc,some of the cup cars are running 330bhp,and are lighter/narrower.
I am talking about 340/350bhp rsr as standard cars,the weight is a little more than a 993 cup car if running big brakes etc
So with a weight penalty it should equal things up a little.Some of the 996 cars also run weight,and it has not been that competative in this class also.
I think the open regs do need some revision,its not just bhp,its also drag,gearboxs and new mich cup slicks,which all add up to a fair gain in time.A 993 rsr even with 400bhp will not stick with most 996 cup cars,500 bhp is needed,now what about a nice little V10 slotted in the rear.
Look forward to racing against you both next season,we are looking to a few more races with the gt90 if it takes off for next year.Sound like we will need to make sure our car is uptogether then !If we can get a few cars together,it would make the euro rounds a more feasable race series.4 or 5 cars in a big truck and service crew etc

That sounds like the route to another season of bargain racing; very tempting! Where's the info on GT90?

Z's 993 Cup car was running standard everything with no recent refresh or similar so 315bhp max and no trick suspension. He murdered all of class 3 and all the class 3 lap records. You are right though, it would be fun to see the RSRs racing together; I reckon they'll be half way up the 996 Cup field as driver skill will beat outright pace. I'm towards the back of 996 pack at present with a 1999 car but am hoping to (a) make some progress on tech spec towards later MYRs over the winter with the help of Chimptune and (b) learn to drive the thing! There are those who thought it rash to first drive my new car in qualifying at Silverstone GP, me included[]. Must be able to do better.

James

 

[zub]

Not sure I follow why you need 500bhp to beat a class 2 GT3.

The GT3s have a min weight of something like 1,325kg (I'm guessing without reading the regs) - with an RS/RSR having no min weight restrictions. Take jimmyslr's GT3, it's running so much weight it needed the floorpan strengthening! On a power to weight basis, the RSR needs around 350-360bhp to be equivalent with a GT3, then it has an aero disadvantage, prob suspension and bodyshell not as good as a GT3 and a few other bits - say that's worth another 50bhp, so that comes to 400bhp needed to be competitive. That's still well below 450-500bhp. Presumably a 450bhp - 500bhp (hypothetical) RSR performs similarly to a GT2, which would be a class 1 car?

It's all hypothetical anyway, as my RSR isn't in the 400,450 or 500bhp category...!

Z

 

[jimmyslr]

ORIGINAL: zub
It's all hypothetical anyway, as my RSR isn't in the 400,450 or 500bhp category...!

You need all the horsepower you can get my son... 935 guaranteed 600bhp I thought.

And I think you'll find it's 1310kg per the regs in class 2. Do read them properly... It's 60kg of lead in my passenger seat because I am so slim and we need to give the other chaps a chance. It's like Rocky doing training where he carries someone extra on his back to make him faster[].

 

[jimmyslr]

Back on topic, the 8/32 is awesome kit. It makes a 993 fly on track, but I do understand you might not want to use it on the road. I've side by side datalogs of v similar cars with and without 8/32. The difference is scary.

Off topic again, and a noddy question best answered by Paul or someone else of technical knowledge. Is the king and pinion set up in a 993 the same as in a 996 cup (ie could you spec up 996 acceleration with an 8/32)? Second, is that OK via the regs??? I rather doubt it as they refer to standard GT3 Cup ratios, albeit it's not specific on K/P.

 

[racer48]

Jimmysir, I reckon the low ratio cwp would fit in your box as you have the one that Noah used! That said, I will have a check and make sure but I doubt Steve K will allow it in the class.
Anyway, now we have looked at the car and sorted it you won't need it. Paul was right, Z will need at least 500 brake to keep up!!!! (Actually, I guess it depends on how you measure it....)

In all seriousness, the 8:31 is weaker than the standard ratio and unless you want to race it or are a true track day God I reckon the standard one is best for all round use.
Cheers,

Richard.

 

[racer48]

Whoops, I meant 8:32 of course! Sorry!!!

 

[RSR]

I don't think Zub will need 500bhp to keep up with class 2. 500bhp in a 993 based car with rose joints and big brakes is good for outright win in class 1. I know as I did it a couple of times this year and my car rolling road dynos at 510bhp; and thats when its at its best with intercooler still fairly cold with good cold air flow. I read a thread on piston heads once where they discussed turbo cars dropping off power as they get hot. I didn't really think much about it until this season. Now I'm really in tune with the car I can definately say that for the first 5 to 10 minutes the cars power is relentless and feels the same no matter what the gear. 10 ish minutes in when the heat soak sets in there is a deifnate tale off of power that is very noticeable. I'd like to get the car dynod under these circumstances to know by how much, but i'd say its dropping to below 500bhp.

A well driven 993 RSR will be quicker the tale end of class 2, but to get a class 2 podium will be difficult depending on the quality of the other drivers.