Available  Parts

jps Aircooled                                  356 - 912 Billet Cylinderhead

"Standard"

for Ø 82.5 - 86 mm Piston & Cylinders

JPS Aircooled 356 - 912 CNC Billet Cylinder are a exact remanufacturing of the SC-912 Cylinderheads.

They are manufactured according to the factory drawings, with a lot of improvements over the old cast Cylinderheads that are now more than 50 years old.

  • manufactured on modern 5-Axis milling machines makes this head to a Class of his own
  • 12 mm long spark plug threat
  • valves guide support
  • digitization of the SC and 912 combustion chambers 
  • perfect Intake an exhaust canals
  • 8mm steam valves
  • 40mm intake / 35mm exhaust
  • single valve springs in top quality  

Available options:

  • Twin spark 
  • Double valve springs  


JPS Aircooled                                  356 - 912 Billet Cylinderhead "SPORT PLUS"

"SPORT PLUS"

for Ø 91/93/94mm Piston & Cylinders

The JPS Aircooled high performance "Sport Plus " Cylinderhead for 91, 93 and 94mm P&C, is a new developed.

This CNC billet heads are flow bench tested with a lot of improvements and outperform any stock Cylinderhead by far.

 

If you looking for the next level of your 356 - 912 this heads are the solution for that.

  • flow bench optimized intake and exhaust canal
  • flow bench developed combustion chamber
  • prepared for 42/35mm or 44/35mm valves for maximum torque and high performance.  

 Complete manufactured and black anodized.

 

Available options:

  • Twin spark
  • Double valve springs (93/94mmStandard)


JPS Aircooled MANIFOLD

JPS Aircooled billet manifold for Weber 48 IDA

  • perfect shape,
  • flow bench tested

 

 

 

 

 

 

 

 

 

 

 



JPS Aircooled                      Oilsump Extension          Catch Oilsump                              356 -912

This kit includes:

  • 1 Oil sump with ring magnet complete assembled (all screws are tigthend to the correct torque and secured)
  • 1 Oil tube extension
  • 1 Drain plug
  • 10 self-locking nuts M6
  • 10 cooper ring for M6 nuts  
  •  black anodized 

 

 



Jps Aircooled                                  356 - 912 Flywheel                      CNC Machined

  • CroMo flywheel CNC machined 
  • weight 3.3kg / 7.28 lbs
  • available for 12V and 6V starter
  • for 200mm kennedy clutch 
  • stress and static calculated 
  • race proven

 

 

 

 

 



JPS Aircooled                                  356 - 912 HD Aluminum-Pushrods

  • made of highest quality aluminium precision tubes 
  • correct heat treatment
  • you can run all available camshafts
  • pushrods can handle up to 200kg / 440lbs valve spring pressure
  • racing proven over years up to 8k rpms
  • ligther than stock pushrods
  • available in every length on request


JPS Aircooled                                  356 - 912 VALVETRAIN PARTS

  • available as kit or in parts too
  • long rockershaft
  • short rockershaft
  • sleeve 
  • clamp washer
  • all parts are 100% CNC maschined an fits perfect
  • shaft are carbon nitride and centreless grinded too factory specs


JPS Aircooled                                  356 - 912 Rocker shaft  - long

  • hardened 54 HRC and grinded 
  • CNC manufactured


jps aircooled                                  356 - 912 Rocker shaft - short

  • hardened 54 HRC and grinded
  • CNC manufactured


jps aircooled                                  356 - 912  spacer                              for  Rocker shaft

CNC manufactured



jps aircooled                                  356 - 912 Radius washer

CNC manufactured



JPS Aircooled                      Cooper  Exhaust  Gasket

CNC laser cutting precision copper exhaust gasket