by John Glynn | Oct 31, 2014 | Classic Porsche Blog, Project Cars
The lightweight Porsche 911R race car in build at the EB Motorsport workshop has almost reached the end of its bodywork journey and is now being prepared for paint. Earlier this year, EB added another metal fabricator to their engineering business, who was also experienced in restoration. The new man has extensively rebuilt the rust-ridden chassis, replacing the huge amount of corrosion in the base chassis with nice clean metalwork.
Pictures I received of the project in progress made it look very nicely done. More shots just shared by Mark at EB Motorsport show the 911 with EB’s light composite body panels (handbuilt in the same workshop) attached, including front wings, doors and rear quarter panels. The roof is still steel, which begged the question why the guys didn’t use the EB Motorsport fibreglass roof panel to replace the original metal panel.
“Simple answer is that the lighter EB roof panel is perfect for replacing sunroof holes on cars originally equipped with a sliding roof,” says Mark at EB. “On a car without a sunroof, we would be putting a lot of work in to save two kilograms, so we’ve opted to leave things as they are and look elsewhere for weight savings.”
EB Motorsport reports a number of 911R kits sold to satisfied customers. I know a few people who have opted for a 911R conversion on their challenging SWB 911 restorations, using EB’s lightweight Porsche 911 doors and aluminium hinges, full front wings with built in sidelights, 911R tail light conversion and composite rear quarter panels. Target weight for the EB 911R is circa 860 kilograms: that would be quite an exciting achievement.
Also in the EB project stable is the 2.1-litre RSR “Baby” Turbo replica, which now looks little short of insane. Mark has been working on the flat fan conversion prototyping and recreating the magnesium oil cooler housings as per original race cars. He is also building a new front end for his Harley chopper. So much stuff going on up in Yorkshire: kudos to the guys there.
by John Glynn | Oct 15, 2014 | Classic Porsche Blog, Porsche Cayenne, Porsche News
Stuttgart recently released its latest list of Porsche approved ‘N-rated’ tyres. The approved list won’t surprise too many people, but the pic below of a Porsche 356 Coupe close to vertical on the Continental ContiDrom banking in testing might raise a smile.
Porsche’s N rating is regularly updated to keep abreast of progress made in tyre development, including tread design and compound changes. Tyre fitter legend has it that, once a tyre is granted an N rating, it cannot be altered without losing approval. The budget brands don’t feature in the Porsche lists, but is that due to money and marketing? Who believes these N-rated lists?
Porsche’s N rated approval lists don’t mention tyre price premiums or brand discounting on tyres supplied with new cars. Instead, the lists are said to come from extensive tests carried out by “Porsche tyre experts” over several weeks. This year, the test team used the aforementioned 356, an impact-bumper 911 2.7 Carrera, a 911 Turbo (930) and a first-gen Porsche 986 Boxster. No mention of front-engined cars or the 964/993 series with 17″ and 18″ wheels, but they do feature on the N rated lists.
The forum jury is well and truly out as to whether Porsche-approved tyres are that much better than non N-rated tyres. I have used both N-rated and unrated tyres on my own classic Porsche cars and been happy with examples from each camp. That said, my 911 is currently on non N-rated tyres that do have a version on the Porsche approved list and they have proved excellent. I am not saying that the N rated list is fallacy, just that there are other tyres out there that seem to work well on older Porsches.
N rated Porsche Tyre Prices
A set of new N-rated tyres for my 911 costs around £400, so it’s not saving a huge amount of money over five years (or however long you expect tyres to last on a car doing 2k miles a year) to pick a set of tyres costing a hundred quid less. Not that I ever buy new tyres for my own cars, and the argument changes if you use your Porsche daily: Ferdinand’s 10 year-old Cayenne S will happily demolish two sets of part-worn Continental tyres in ten thousand miles.
I started my classic Porsche career on Kumho tyres, and have also used Falken, Goodyear Eagle F1, Michelin Pilot Sport Cup and Continental ContiSportContact to name a few I recall. Friends use Bridgestone S-02 (approved), S-03 and Toyo R888 on track cars. I like driving on the Bridgestone S-02s but find the 888s to be very noisy and hard work in heavy rain. I’ve driven too many 911s on Michelin TB5 and TB15 to list: not my favourite tyres but they do look good on wide wheels.
My own preference thus far is for Pilot Sport Cups, but ignore what I am telling you. They are super expensive, will scare you a bit in torrential downpours and won’t last more than 2,000 miles if you’re lucky. That said they look drop-dead gorgeous and the grip is amazing. My last set of Pilot Sport Cup rubber expired about four years ago and I’ve been on ContiSportContact ever since: grip is great, long tyre life (as I don’t go anywhere) and superb in the wet.
N-Rated Tyres on Classic Porsche Cars
ContiSportContact and SportContact 2 are N rated tyres. The SportContact is also an F-rated tyre: Ferdinand recommends them 100% based on the fact that we’ve used SportContacts for more than 5k miles and didn’t die in a blazing inferno due to skidding off-piste. ContiSport Contact 3 is not N rated but they are also great: been using them on my E36 BMW M3 for a couple of years and they are superb, but not N rated and not available in 245/45 16 to fit 9″ Fuchs. Both sets of SportContact rubber replaced GoodYear Eagle F1s, which must be the worst tyres I have ever driven on: Kumhos included.
The Porsche N rated tyre lists include approval for:
- Porsche 356: Pirelli P6000 (would not look great IMO)
- Porsche 924: P6000, Continental ContisportContact and Michelin Pilot Exalto PE2 (I have P6000s on my 924 Turbo)
- Porsche 928: Pirelli P Zero Asimmetrico, ContiSportContact, Michelin Pilot Sport PS2
- Porsche 959: Bridgestone RE71
- Porsche 964: Pirelli P Zero Rosso, Bridgestone S-01, Bridgestone S-02A
- Porsche 986 and 996 add ContiSportContact 2 and Pirelli P Zero Direzionale.
I’d be interested to know who is using non N rated and how they have been doing – add thoughts in the comments. Anyone who believes Porsche cars should only run on N-rated rubber can rest assured that we understand the arguments in favour but are happy to deviate from that advice.
by John Glynn | Oct 13, 2014 | Classic Porsche Blog, Race and Rally
More bad news via email recently, when I received these pics of a crash involving the ex-Sam Gassel 1973 Penske Sunoco Porsche 911 RSR recreation at the 2014 Coronado Speed Festival. Sam bought the project unfinished from Gib Bosworth of Kremer ST replica fame, and built it into a very fine replica of the Penske car. It’s distressing to see it take such a heavy impact, but these things happen in racing.
The Coronado Speed Festival is part of San Diego’s annual Fleet Week, which is held at the US North Island naval base in San Diego to open the base to the public and recognise the contributions of San Diego’s military community. It is the US Navy’s only open-house event on the US West Coast.
Not too much information about the crash online, but it looks like it all kicked off in the first five minutes of qualifying. The pics suggest a wide mix of cars on track, and it certainly looks that way to me, having seen some video of the session shot from good mate Mike Gagen’s ’88 IMSA GTO Camaro, which was on track amongst a bunch of prototypes and a few 914s too.
If you’re thinking that a spread of cars from the 1960s to late ’80s on track at once is asking for trouble, you might be right. Regardless of fault in the incident, this is not a fun way to go racing. I can’t imagine that the car escaped lightly, which is very sad given how much work Sam put into this labour of love. Hopefully any damage caused to car and driver is entirely fixable (pic here from Flickr):
It was recently announced that America’s SVRA had been awarded stewardship of the Coronado Speed Festival from 2015. SVRA already organises some of America’s biggest historic motor racing events, so hopefully affairs like the RSR crash will become a thing of the past. Gagen reminds us of a famous saying amongst vintage racers: “your car already has race history, so the only history you can add is bad history.” ”
SVRA also oversees the popular Monterey Historics, so picking up Coronado and its sister events at Sonoma and Portland means that SVRA now runs all the major West Coast vintage racing events. Given some of the feedback on the cliquey-ness of certain race meetings, I’m not sure that is such a hot idea, but it is what it is. Hopefully my info is behind the curve and there will be room for everyone to take part. There is nothing quite like racing, California-style.
by John Glynn | Oct 13, 2014 | Classic Porsche Blog, Market & Prices
A Porsche friend has entered this matching numbers 1979 Porsche 930 (911 Turbo) for the classic car auctions at the NEC Classic Motor Show next month. Normally my advice is to take care when buying at auction (i.e. what most auction buyers fail to do) but I have seen this car more than once, and it has always struck me as a decent example, so am happy to share it on Ferdinand. That said, buyers should still do their homework.
The car was found in California by Tuthill’s US buyer around the same time I bought my 912E. At the time, Tuthills were rallying that white 930 on Midnight Sun and I did think this might end up as a rally car. As quite a unique colour and spec – Bamboo Beige with dark brown Recaro sports trim – it was one of the first impact bumper 911s I was hoping would not be modified! Not my usual approach, but this was low mileage and really quite nice. Happily, it found a fine home as a road car.
On arrival in the UK, it was given a thorough inspection and much work was done to recommission the Bosch CIS K-Jet fuel injection system, including fitting a brand new fuel tank. Earlier this year, Paragon Porsche fitted new suspension, before it came back to Tuthills for a diff rebuild and new clutch. The car has only done 46,000 miles or so, but the owner has never shied away from spending money on it. He tells me he is selling to buy a horsebox for his daughter: how the other half lives!
The estimate for this car is £40-46k. As a left-hand drive, low mileage 930 in a rare colour, it may find the interested parties it needs to get some competition going on bidding. My only real bugbear is the polished Fuchs, but it would be easy to repaint the centres in proper satin black, as above. Then the car would look like quite a special impact-bumper 911, in my opinion.
by John Glynn | Oct 8, 2014 | Classic Porsche Blog, Project Cars
This freshly-built Porsche 911 RSR replica recently enjoyed its track day debut at Spa Francorchamps. Replica, homage, interpretation: call it what you will, it’s a widebody version of the classic 911, but still more compact than your average modern sports car. Owner Tony tells it like this:
After much consideration on what style of sports-purpose Porsche to build from my 1979 Porsche 911 SC, I opted for an early 911 that packed a punch and would one day enable us to possibly race at international events. I therefore choose the 1973 2.8 RSR as the ultimate aim for my project, with the end result hopefully of a car with FIA papers.
Whilst researching and preparing my budget, it became obvious that the cost of such a project was going to be considerable. We therefore decided to break the project into two phases.
Phase 1 would include chassis, suspension, brakes, bodywork and paint. I knew that, as an ex-Porsche Club GB championship car, the SC had a strong and willing power plant. Therefore, if I added rigidity, removed weight and upgraded the brakes and suspension, it would be an exciting drive. Phase 2 would be all about more power. Phase 1 thus became:
- Strengthened shell, built within the FIA rules, including revised rear crossmember
- Wide body with lightweight panels
- Coil-over suspension with Porsche RSR front Bilstein struts, Reiger dampers and monoball top mounts
- Early adjustable RSR anti-roll bars with RSR strut brace
- Brembo brakes (not FIA)
- Custom Cages T45 historic cage
- 8 x 15″ Fuchs front wheels and 9 x 15″ Group 4 rear wheels
- Michelin TB15 tyres: 215mm F/270mm R
- Front-mounted oil cooler
- Lightweight windows inc heated front screen
- Lightweight fuel tank (bag tank)
- Target weight sub-1000kg
The Porsche project 911 2.8 RSR replica commenced in March and was due for completion in time for a track day at Spa Francorchamps on July 14. I got to know some great people during the course of the project. A special thanks must go to all the guys at Track Torque Racing for building the car, as well as Dan Sutherland at Dansport and Mark Bates at EB Motorsport for Porsche parts, advice, support and expertise, without which the car would never have been completed.
Despite a few teething problems immediately prior to leaving for the Hull ferry, the trip was fantastic, with circa 1000 miles through Belgium and on track at Spa. The car was unbelievable. It delivered astounding performance in the wet conditions in the morning and was capable of running very quickly in the dry PM session, however it was clear the grip level would not last forever in the dry conditions and that Michelin TB5s would be more durable.
Regardless, I now have a car which always delivers a great big smile to my face, whether in the garage or when I’m behind the wheel. Ultimately the car is fast, light, agile and fun: exactly what a Porsche should be all about! The best thing of all is I still have Phase 2 to look forward to!
