Stuttgart Classica

Tel: 01386 701953

Bedford Trackday

Group 4Jason EatonComment

On Monday I went to a track day with a couple of mates in M3s, one with a LS3!

I knew the Michelin TB15’s wouldn’t last long with the heat so it was time to see them off, they have done 3000 miles including a track day at the Nurburgring. I’ll probably buy some narrower wheels for track days so I can run some cheaper track tyres.

The gearbox started to get a little tight after a few laps so I’ll look into fitting/developing a 915 cooler kit. Oh, I also need a diff badly!

Abingdon Airfield

Porsche stuffJason EatonComment

Here is a short video showing our own project cars and the next project, the RSR filmed at Abingdon Airfield.

Big thank you to Mission Motorsport for organising the use of the airfield, and everyone else that helped with photos and videos on the day.

912E Backdate

Customer CarsJason EatonComment

Are you thinking “why do you need to backdate a 912?!’. Well, the US got an extra 2092 912s for 1 year only from May 1975 to July 1976, called the 912E. This impact-bumpered 912 was used to fill the entry level position left by the discontinuation of the 914

The customer came to us wanting to backdate the front and back end of his 912E. While we were in there we replaced most of the frunk floor and all the battery tray due to rust. The wings were in good condition so we fitted some of our backdate indicator panels to the original wings.

Nürburgring

Group 4Jason EatonComment

I took the Group 4 to a circuitdays trackday at the Nürburgring last month. The car performed perfectly, I was a bit worried about the soft Michelin TB15 tyres but even with the great weather it didn’t cause much of an issue.

Prior to this trip I also fitted a turbo brake master cylinder, this along with the brake ducts from the Group 4 front bumper gave me plenty of confidence on the brakes.

I have the October trackday booked later this year, the only tweaks I might do is some siffer front springs as they are currently 125ft-lb.

Group 4

Group 4Jason EatonComment

The fibreglass arches and bumper have been mocked up and have gone off to the paintshop.

Shouldn’t have a problem driving at night…

The paint shop we are using for this job is Big Bear Kustoms, they specialise in Japanese body kits so this kind of work is second nature to them.

The RSR project...

RSRJason EatonComment

This 1973 Porsche 911 was built into an RSR-style race car in 2017 by Mike Colucci, the former crew chief and engineer for Brumos Racing. Noted Porsche specialist David Brown built the naturally-aspirated 3.8-liter flat-six, which is based on a 964 RSR case and reportedly produces around 400 horsepower. The car also features an AP air jack system, front-mounted oil cooler, reinforced strut towers, 15-gallon fuel safe, 3-gallon oil tank with heater, full roll cage and Lexan windows. The 915 gearbox is equipped with a spool differential and 911 Turbo axles, and 16″ BBS wheels have also been fitted under removable RSR bodywork. The car weighs ~916kg!

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The 16″ BBS wheels measure 11″ wide at the front and 14″ at the rear. The suspension includes a custom-fabricated 935-style front rack, bump steer kit, dyno’d JRZ dampeners, rear coilover conversion, and Taggert adjustable sway bars.

The front strut towers feature tubular reinforcements, and a square-section tubular crossmember is visible forward of the 15-gallon Fuel Safe fuel cell. A surge tank, Bosch fuel pumps and a 3-gallon oil tank with heater are also fitted. A large front-mount oil cooler is fitted ahead of the fuel cell, and an air extractor has been added to the front hood.

The engine was built by Dave Brown and reportedly has seen little track time since completed. It is based on a 964 3.8 RSR case and features a 102 mm bore and 76.4 mm stroke. Output is reportedly around 400 horsepower, and the build included the following components:

  • JE race pistons; 11.5:1 compression

  • Custom Webb RSR camshafts

  • Carrillo rods and rod bolts

  • Standard 964 crank

  • Boat-tailed main journals

  • Ported, polished and flowed heads

    • 44mm intake ports

    • 41mm exhaust valves

    • 53mm RSR intake valves

  • PMO induction with Electramotive XDI crank-fire ignition

  • RSR flywheel with Centerforce clutch

  • Aeroquip lines throughout

Stuttgart Classica plan to strip this car completely and rebuild it as a road-legal RSR trackday monster! Most of the upgrades will be serviced and restored or replaced with similar high end parts more suited to fast-road use.

You can follow this project on the projects page, Instagram and Facebook.

Luftgekühlt GB

Porsche stuffJason EatonComment

Today saw the first Luftgekühlt on British soil, and of course it rained...a lot.  Luckily it was still a great turnout with some really cool aircooled cars, some familiar and some new.  We both hope it becomes a reoccurring event. 

Cayman CS Nurburgring Trackday

Cayman CSJason EatonComment

We took our Cayman CS to the circuitdays Nurburgring trackday last week.  Very happy with how the car felt on track - no issues with cooling, brakes or handling.  

Cayman CS project has started

Cayman CSJason EatonComment

We have started with the Cayman CS project.  Over the next few weeks we will be fitting the upgrades to our Cayman to make it the ultimate fast-road Cayman - something we like to call Cayman CS.

We quickly threw one of our 917 style wooden gear knobs on and started on the performance upgrades.

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A simple brake pad and fluid swap turned into a nightmare when the last bleed nipple sheared off.  This required drilling out and tapping for a new bleed nipple.  We fitted Ferodo DS2500 pads and flushed the system with AP Formula DOT 5.1 fluid.

Ferodo DS2500 pads

Ferodo DS2500 pads

Sheared bleed nipple

Sheared bleed nipple

New bleed nipple

New bleed nipple

Next was to address the power steering system.  987.1 Caymans do not have a power steering fluid cooler.  When running prolonged high RPM, the power steering fluid is being pumped around the system more than normal which increases it's temperature.  With the inadequate cooling this could cause a failure of the rubber power steering hoses.  The simple fix is to fit a power steering fluid cooler in the low pressure circuit.

Rubber bobbins for cooler

Rubber bobbins for cooler

Mocal cooler

Mocal cooler

Oil starvation is an issue on the M96 and M97 engines during hard cornering, especially with track tyres.  We decided to fit a copy of the Porsche Motorsport X51 sump, it is slightly deeper which increases the engine oil capacity 0.6 litres.

Standard sump removed

Standard sump removed

Deeper sump

Deeper sump

In the next update we will be fitted a third radiator and the suspension upgrade.  

Gearbox issues

3.2 CarreraJason Eaton

So the 915 gave up on me, not surprised as it took a lot of stick (pardon the pun).  During spirited driving 2nd gear decided it didn't want to go in at all.  I managed to limp it back to the unit and we drained the box to find a lot of dog teeth loose, I was surprised as there was no grinding prior to failure.  

A few dog teeth came out with the plug, the rest from the inspection plate removal.

A few dog teeth came out with the plug, the rest from the inspection plate removal.

:D

:D

The first and second gear dog rings had no teeth left and the synchro had fell out!  Luckily this was the only damage and it was a relatively cheap fix (for a 915 box).

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Now the box and engine is back in, she shifts into first a lot easier and the judder when pulling away in first has gone!  Engine speed increases quicker now with the aluminium clutch housing so I'll need to adjust my heel & toe.  I just want to get out and drive it before the weather gets rubbish!

Headliner, catch can, fuel level sender and door frame

993 Engine'd SCWill ChappellComment

I have finally managed to find some time to work on my own car!  About a month ago I managed to get the Wonderland head lining installed. If any of you follow us on Instagram this is all old news.

Started by measuring the headlining out, and feeding the head lining rods in place.

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1 million bull dog clips later.

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Before sticking in to place, I placed the new interior light harness from Kroon in place.

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Then using high temperature adhesive, we stuck it in.

The finished article, just the bits round the A, B and C pillars to glue down.  I am just awaiting some Alcantara leather to wrap those bits.

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I also managed to get my new Mocal oil catch tank all located and buttoned up with vent breather fitted.

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I unwrapped the front bumper, I might get around to fitting this soon hopefully!

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One of the bits that I have been waiting on for a while is my custom ATL fuel sender, so last Friday afternoon, whilst it was raining, I stayed late and got the plate all drilled out and fitted rivet nuts to locate it down.  I am just waiting on some longer aluminium cap head bolts to finish the job off.

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I had been waiting on some parts from the chromer for ages. They were slow, and generally pretty useless, most of the pieces they were refinishing for me I rejected, so they are having to go elsewhere to be re-re-finished.  I did manage to get the driver’s door frame assembled and refitted, all with the brand-new seals in place.

The only other job I have managed to get done was the steering column has been reinstated, and I have been working on my interior dash backdate.  What do you think?

Hopefully I can get the other door frame in tomorrow, and crack on a bit with the dash backdate completion.  The wiring loom is due at some point this month, so I can have fun figuring out where that all goes.  

Stay tuned, and let me know what you think to the build.

Cars, Coffee & BBQ

Porsche stuffJason EatonComment

Yesterday we held our second cars and coffee with the addition of a BBQ.  The weather was perfect and we had an amazing turnout.  Thanks everyone for attending, we hope to organize another one soon - subscribe to our news letter to stay updated about future events and news.