MED 5-port

MED 5-port

MED RALLY SPECIAL

£1,400.00 £1,166.67 EXC VAT

The MED Rally Special features enlarged inlet ports to suit a Weber 45DCOE carburettor, single groove valves and steel top caps. The competition-grade 35.7mm x 30mm valves are installed with unleaded exhaust valve seat inserts.


These are now only available on an outright basis, based on a brand new MPi Mini casting that we can adapt to suit earlier engines.

- +
  • *Required Fields
Description

The MED Rally Special is based upon our popular Road Competition head, but with enlarged inlet ports and single-groove valves with steel caps and collets. These work especially well on engines running a Weber 45DCOE carburettor, road or competition.

Enlarged three-angle valves are manufactured from 21NS stainless steel forgings, plasma nitrided for extra strength and wear characteristics, and installed in our own high quality bronze valve guides. The combustion chambers are expertly re-profiled and the capacity optimised to gain the correct compression ratio for your engine.

Final assembly is completed with MED road-spec double valve springs. The head can be supplied to suit 9-stud or 11-stud head fixings and painted in a variety of colours, ready to fit.


Machined in-house to a very high specification as follows;

  • Ported to our own unique profile, with inlet ports to suit Weber manifolds.
  • Specially-developed valve seat and combustion chamber profiles.
  • MED bronze valve guides with tapered inlets.
  • Stainless 21ns race valves with wasted stems.
  • 35.7mm inlet valves, 30mm exhaust valves - single groove.
  • MED steel top caps and collets.
  • Refaced top and bottom faces.
  • Spring seat platforms machined to gain correct spring tension.
  • Fitted with MED road double valve springs.

Options to be confirmed;

  • With or without bypass hose take-off.
  • Heater tap open or blanked.
  • 9-stud or 11-stud.
  • Combustion volume from 18cc up to 27cc.
  • Finished in red, blue, black, grey or green.

Please note, these cylinder heads are machined to order - once you have purchased this product a member of our sales team will contact you to finalise the specification and advise delivery. 

We aim to deliver within 20 working days from the initial order, however during the race season this can vary with demand. Please contact us for the most accurate lead times. 

These are now only available on an outright basis, based on a brand new MPi Mini casting that can be adapted to suit earlier engines. 

Reviews

Write Your Own Review

Only registered users can write reviews. Please, log in or register

Product Tags
Use spaces to separate tags. Use single quotes (') for phrases.
SPECIALIST

Leading A-Series engine specialist since 1981

HIGH QUALITY

High quality components with a 4.8 star average rating

EXPERTS

Expert technical knowledge of the A-Series engine

DELIVERY

Express daily shipping services to customers worldwide

View More

SPECIALIST

Leading A-Series engine specialist since 1981

HIGH QUALITY

High quality components with a 4.8 star average rating

EXPERTS

Expert technical knowledge of the A-Series engine

DELIVERY

Express daily shipping services to customers worldwide

Loading...