T4/914 Head Machining

Service Price per pair
Open head to 103-105 50
Deck cut with open up 15
Fly cut only 40
Hemi cut Call
Unshroud valves 90
Gusset Call
Cut for dual springs 25
Clean used head 30
10mm spark plug T6 aluminum weld in insert 95
6 stud head and case machining Call
CC head 35
Stage 1/2/3 port and polish Call
Complete high performance rebuild on your good clean T4/914 head: includes tapered guides, special valve seats guaranteed to never drop out, stage one port and polish, stainless steel valves up to 50mm x 40mm, HD single springs with chromoly retainers, open to 103-105, unshroud valves, CC head 979
Same as above with new heads T4/914 1695
Contact Us

T4/914 Case Machining

Service Price
Line bore (.020) with cam bore (std) 80
Clearance for larger stroke Call
Oil galley plugs thread in 75
Open up with deck 103-105 75
Deck only 25
6 stud case and head conversion (welding) Call
Remove head studs From 20
Clean case (solvent wash) 40

Other Machining

T4 crank and flywheel 4 dowel (high HP) 90
Clearance case and rods Call
Prop modification to T4 crank Call
Straight cut adjustable steel crank and cam gear (half price with engine kit or machining) 100
Contact Us

Engine Kits and Parts

Used T4/914 Engine Parts

  • Factory oil pumps
  • 914 oil windage tray
  • Factory 914 3-stud head
  • Bus factory head
  • T4 engine case
  • Std crank gears

T4/914 Engine Kits

  • Mild to Wild (No Machining) Bus Special, 78mm x 94mm, 2165cc  ($1,495) - Includes pistons and liners, shims to compensate for 78mm stroke, special rods, rod and cam bearings, gasket set, front and rear seals, new forged crankshaft
  • Machining Required 71mm Std 2.0 x 104mm, 2412cc ($1,595) - Includes 104mm pistons and liners, rod and cam bearings, gasket set, front and rear seals. Case and head open up half price with kit.
  • Machining Required 78mm x 104mm, 2650cc ($1,695) - Most horsepower for the money - Includes 104mm pistons and liners (flat top), special rods, rod and cam bearings, gasket set, front and rear seals, new forged crankshaft. Case and head open up half price with kit.
  • Max 86mm x 104mm, 2922cc ($1,895) - Same as above with special machining. Please call if you are interested in this package.

 

Contact Us

Mark Stephens High Performance

Type 4/914 Specialist

New and used engine parts and engine kits

  • Over 30 years experience
  • First to import and machine used Type 4/914 engines from Germany (1976)
  • First to introduce many necessary improvements to T4/914 engine
IMG_4866

Next Steps...

Please call before sending parts to be machined. If you leave a message, I will return your call as soon as I can.