Stuttgart Classica

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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!

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.

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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Photo+13-09-2017,+8+50+01+pm.jpg

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!

Classic and Sports Car Show @ Alexandra Palace

Porsche stuffJason Eaton

Popped over to Alexandra Palace yesterday to see whats going on at the Classic and Sports Car Show.  I planned on taking the 3.2 but it's a bit poorly at the moment, hopefully just a coil.

This 993RS spec engine'd SC by  Theon  was up for auction.  Looked like a great car, lots of cool details.

This 993RS spec engine'd SC by Theon was up for auction.  Looked like a great car, lots of cool details.

This print by  Unique & Limited  was amazing!  I wish I could afford such a fine piece of art. 

This print by Unique & Limited was amazing!  I wish I could afford such a fine piece of art. 

I really liked these prints by  Tripplespresso , I may have to see if I have some wall space spare...

I really liked these prints by Tripplespresso, I may have to see if I have some wall space spare...