911 track cars......

911 track cars......

Author
Discussion

cragswinter

Original Poster:

21,429 posts

196 months

Friday 11th March 2011
quotequote all
thegoose said:
Besides the transmission the braking systems are different between a C2 and a C4, so this would need to be converted as well. The C4 has some kind of pump system - you may have noticed that there's a dash light that sometimes takes a few seconds to go out once the car's started - this indicates low pressure, hence it goes out once it's built up. The C2 doesn't have this but I don't know how the systems differ (I would imagine the ABS ECU/programme is different though).
I thought this was just on the 993? My car has the pump (& the associated noise that goes with it!) & it's the same system that was introduced with the 993 RS, the Porsche power brake servo with ABD-the Porsche auto brake differential that works in conjunction with the rear LSD.

I didn't realise the 964 had this as well?

boxsey

3,574 posts

210 months

Friday 11th March 2011
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I don't think you would have to worry about changing the pump assisted brake system when changing a C4 to a C2 because after all the 964RS also has the pump assisted system (albeit with bigger front brakes).

thegoose

8,075 posts

210 months

Friday 11th March 2011
quotequote all
Maybe on this subject I'm a good example of a little knowledge being a dangerous thing getmecoat

Either way, it's worth consulting someone who does know the differences properly to see if it's a significant issue or not. smile

Steve Rance

5,446 posts

231 months

Friday 11th March 2011
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Both the 964 and 993RS's share the same abs pump as the C4 derivitives.

cragswinter

Original Poster:

21,429 posts

196 months

Friday 11th March 2011
quotequote all
well that's that sorted then!

steve, any advice to give consudering your experience on track?

Steve Rance

5,446 posts

231 months

Friday 11th March 2011
quotequote all
If its a track dedicated car you want, stay clear of GT3's or 996/7 Cup cars. Great cars but expensive to run compared to air cooled. I went the air cooled route with my 993 its a very extreme spec and not a cheap build. 1090KG fully rose jointed, RS running gear 3.8 320BHP Blah Blah Blah. It's on parr with GT3 pace but half the price to run which is what I was aiming for. The 964 in the add looks ok but throw away everyting you dont need inside it through - which would be a shame I suppose. Goose's car is definately worth a look because before you know it you will want to do the odd race or two and it's already built to race in the Open which is ideal - providing you dont mind the odd panel repair. I prefered racing in Carrera Cup - the drivers were quicker but a little more predicatble none the less! Exept my team mate Glyn Geddie who was as mad as a March Hare and not a man you'd want to share track space with if you valued your life. This was unfortunate for me because I spent most of my time in Carrera cup doing exactly that. At Snett on the second lap at Russell bend there were 5 cars racing for 4th over all. By the next corner I was 4th behind Tim Harvey because Glyn had taken the other 3 off all on his own. A perfect Strike really. Very impressive from where I was sitting, which was about 6 inches from his rear PU. I really should have thanked him for that.

Anyway, If its a track car you want i'd buy a race car and not a road car with some nice bits on it. You will soon be bored with the extra weight, then it wont have enough propper bits on it for you and before you know it, you've spent 10k and got pretty much back to Goose's car or similar. The only downside is, race cars are subject to the kind of regular abuse that road cars never ever see so make sure you buy a car you know with a known history or one that is fresh - properly fresh and ready to go - not the kind of fresh that most adds proport the car to be, which is rogered sensless for a season then cobbled together to look good for some idiot to buy and spend a fortune on before he does anything else with it.

Good luck

cragswinter

Original Poster:

21,429 posts

196 months

Friday 11th March 2011
quotequote all
thanks steve,
my only problem with the race car option is it just won't be (or will take a massive amount to be) suited to the road car duties. i'd still like to be able to drive the car to the ring & enjoy it & when it's not on a track day, look out the window to a sunny day & think i'll take her out for a blast.

my favourite car i owned for that purpose was my old megane r26.r- sticky tyres, low weight but still comfortable enough to drive down to the alps in (or more importantly comfortable enough for the missus to jump in the passenger seat & come along for the ride in!). we don't mind a bit of harshness but then i'm not looking for anything as cossetting as my old csl.

one mans harsh is another mans compliant, but i doubt it would ever see any more action than track days or perhaps a hill climb or two, i have neither the time nor money to go racing so something that may appear heavy to you guys would probably feel fine to me, for instance anything will have to be able to have a radio fitted & for it to be audiable!

in fact what i'm decribing really does just sound like an RS doen't it?! unfortunatly the funds won't stretch to an RS hence this thread

gfreeman

1,734 posts

250 months

Friday 11th March 2011
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If I had the cash I would go for the clubbie every time. A few (reversible) mods like lighter seats, carpets out, harnesses etc would give you a really nice respected car that turns heads, drives beautifly on the road and certainly won't embarass on circuit.

And I'll guess you will not lose a penny on it. Why do you reckon they are so rarely up for sale?

All IMHO of course....

BertBert

19,040 posts

211 months

Friday 11th March 2011
quotequote all
I'm doing a road/track project at the moment. So I'm one of the people doing the big spend. Hopefully I'll keep it a long time! The brief is to get a light hooligan road car that's as track oriented as poss without making it completely unusable on the roads. Now obviously that's going to be down to how much discomfort I'm willing to put up with. The starting point is an 89 G50 stripped, wide-body, no sunroof, half cage, lightweight carpet set, manual windows n stuff. The starting point is turbo suspension and brakes, but keeping rubber bushing for road compliance. Undoubtedly the suspension will get evolved. I hope I don't end up with a coilover setup because I'll wish I did that first!

It'll take a year to get to first completed build. I suspect it'll take another 2 years of tinkering to get to the optimum point!

Bert

SignalGruen

630 posts

200 months

Friday 11th March 2011
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cragswinter said:
Thanks for posting talat, how's your project coming along?

Wasn't sure about the 64 2wd conversion, like you say it's pretty simple in a 93. However, bite the bullet & buy a second hand gearbox & esp with the red cars low mileage I think you'd always be able to find a buyer for the 4wd box-in fact I'm sure someone like Porsche-apart would do an exchange.
Work has started in earnest - I think the rear quarters will be done this week. There's a build thread on RL.

The problem you may have is sourcing a G50 - they're popular with the kit car boys and so you may have an issue sourcing one at the right price.

SignalGruen

630 posts

200 months

Friday 11th March 2011
quotequote all
BertBert said:
I'm doing a road/track project at the moment. So I'm one of the people doing the big spend. Hopefully I'll keep it a long time! The brief is to get a light hooligan road car that's as track oriented as poss without making it completely unusable on the roads. Now obviously that's going to be down to how much discomfort I'm willing to put up with. The starting point is an 89 G50 stripped, wide-body, no sunroof, half cage, lightweight carpet set, manual windows n stuff. The starting point is turbo suspension and brakes, but keeping rubber bushing for road compliance. Undoubtedly the suspension will get evolved. I hope I don't end up with a coilover setup because I'll wish I did that first!

It'll take a year to get to first completed build. I suspect it'll take another 2 years of tinkering to get to the optimum point!

Bert
Do you have a build thread anywhere ?

GT Two

3,070 posts

192 months

Friday 11th March 2011
quotequote all
BertBert said:
I'm doing a road/track project at the moment. So I'm one of the people doing the big spend. Hopefully I'll keep it a long time! The brief is to get a light hooligan road car that's as track oriented as poss without making it completely unusable on the roads. Now obviously that's going to be down to how much discomfort I'm willing to put up with. The starting point is an 89 G50 stripped, wide-body, no sunroof, half cage, lightweight carpet set, manual windows n stuff. The starting point is turbo suspension and brakes, but keeping rubber bushing for road compliance. Undoubtedly the suspension will get evolved. I hope I don't end up with a coilover setup because I'll wish I did that first!

It'll take a year to get to first completed build. I suspect it'll take another 2 years of tinkering to get to the optimum point!

Bert
Sounds like a great project!