Translate:
See features on MCE & cars we have restored in issues 81-82 of Classic Porsche mag.
Tel: 07796-372-239 or 01295-710-374
Tel: 07796-372-239 or 01295-710-374
Engine and Transmission Builds
Porsche Engine Rebuilds, Inspections and Diagnostics
At MCE we take a systematic approach to investigating engine issues and undertaking rebuilds, and draw on our 30 years experience designing, building and testing road and race car engines. We also utilise a full suite of diagnostic tools including combustion chamber borescoping, compression testing, leak-down testing, oil spectrometric analysis and precision measurement to accurately identify issues and overall engine condition. We have extensive experience in rebuilding all the Porsche 911 engine variants from the early 2L aluminium case air-cooled assemblies through to the later generation 996/997 M96/M97 water-cooled installations, from standard road specification through to race-proven RSR variants. Please feel free to get in touch to discuss your requirements.
Full in-house engine strip, inspection and rebuild facility with capability for all Porsche sports-car engine configurations. Rebuilds to factory specification, or inclusion of displacement increases, performance updates, twin-plugging, camshaft, induction and exhaust selection .
3.0SC engine converted to 3.2L short-stroke with GE60 cams and 46mm PMO carburettors
On the left: rebuilt 996 engine with new pistons and cylinder liners. On the right: 1973 2.4S MFI engine rebuilt to original factory specification
From left to right: 1968 2.0 911S, 1976 Carrera 3.0, 1974 3.0 RSR FIA engine rebuilds
1973 2.4L magnesium crankcase engine rebuild
1968 911 engine rebuild
M96 and M97 intermediate shaft bearing (IMS) and rear main seal (RMS) inspection and replacement
Resolution of borescoring on 996 and 997 M96/M97 engines
M96 engine borescope inspection at MCE, revealing piston crown and bore in good condition
Same engine showing signs of significant borescoring in an alternate cylinder
IMS bearing failure on a 2005 997 engine (late M96 type). We caught this one following diagnosis of a running, yes running, engine, and were able to initiate a more efficient rebuild before complete collapse caused further internal damage.
The photo above shows the earlier original single-row sealed Porsche IMS bearing on the LHS, prone to premature failure. On the RHS is an updated higher-capacity internally lubricated roller-bearing design: a recommended upgrade in all M96/M97 installations.
We also perform liner insertions in ductile iron, Alusil or Nikasil depending on customer preference and engine type.
Air-cooled cylinder head inspection, machining and rebuild, including valve guide replacement, valve seat machining, combustion chamber polishing, port flowing and matching.
All engines can be stripped down to full crankcase separation and rebuilt in-house, for close cooperation with customer on rebuild specification and modifications for reliability and performance.
Rectification of engine liner fatigue on 996 and 997 models (the infamous 'D-chunking' of the cylinder wall)
Porsche 912/356 engine rebuilds
Ancilliaries, Tuning and Adjustment
Carburettor strip and rebuild
Early Porsche 911, 912 and 356 valve clearance adjustment
Carburettor tuning, jetting and balancing
Clutch replacements
G50 clutch guide tube and release fork bearing updates
996/997 Exhaust Manifold Bolt Removal Service
On the M96 and M97 engine, the exhaust manifold bolts are notoriously difficult to remove without damage. The original black steel bolts tend to corrode around the thread to flange interface. This build up of corrosion can cause the bolts to seize, making them almost impossible to turn without shearing, leaving the broken M8 stud in the cylinder head.
It is possible to remove these studs without damaging the delicate aluminium head threads, but care and patience is required. We use the Stomski Racing jig and precision drilling and tapping bits to accurately drill out the centres of the studs and reclaim the threads.
Here is the jig in action on an M97 3.8 Carrera S engine, during removal of the original manifolds in preparation for fitment of a Eurocup GT race system.
Once drilled and re-tapped, the original threads are good and ready to take a new manifold assembly.
We use stainless bolts as replacements, for more long-term corrosion protection, or if budget allows, titanium studs and motorsport K-nuts.
Full Eurocup GT Exhaust System installed. Looks and sounds great from any angle.