Text Search
 
 
 
 
 

Rebuild shopping list *NEW!!*

 
 
 
Filter Search


 
 
 

MrB Bay

60mph Speedo, Series 1 And 2 Style (uses Indian Speedo Cable)
£ 25.04 £ 31.31
( Ex Vat: £ 26.09 )
click to read more
 
 

Cylinder head, 225 - 250, ROAD - RACE, (reprofiled for 70mm Lambretta pistons)


The pattern Italian heads are prone to warping so we take the thicker stronger Indian cylinder head and machine it to suit the profile of the piston.

Profiled to 71mm to suit 70mm 225cc engines.

These heads are ideal for faster Road-Race engines and suit TS1 and RB cylinders.

We dont machine out the combustion chamber to lower the compression to suit todays unleaded petrol so they are best used with high octane fuels or engines that are very carefully set up.

 Cylinder head, 225 - 250, ROAD - RACE, (reprofiled for 70mm Lambretta pistons)
MBP0043K
£ 72.67
Price: £ 60.56 Ex Vat
   Quantity :


 
 

Features

  • More power.
  • Smoother running.
  • Modified port timings.
  • Widened port widths.
  • Increased cylinder head compression.
  • Lightened flywheel.
  • V-Force reed valve conversion.
 
 

Technical

  • Increased power spread.
  • Increased top end speed.
  • Increased low down power.
  • Can be done to existing tunes.
  • Can give up to 37 horse power with no welding.
  • Produces a smoother power spread than the RB cylinder.
  • Produces more power than the RB cylinder.
  • Can be used with any carburettor.
  • Can be used with any exhaust.
  • Can be used with any 58 or 60mm crankshafts.
  • Can be used with 62 or 64mm crankshafts but require much more work.
 
 

Development History

  • Mark Broadhurst has probably tuned and machined more Lambretta cylinder barrels and heads than anyone else.
  • This development and history of tuning has been put into our latest reed valve type cylinder tuning.
  • Many months of Dyno development have improved our already excellent Stage 1, 2 and 3 tuning.
  • Our Race-Tour tune works better than any of the Stage 1, 2 or 3 tunes.
 
 

Reasons to Buy

  • Long term reliable and powerful porting specs.
  • Can be used with standard or performance carbs from 28 - 38mm.
  • Ideal Road-Race tuning or as a Touring tune.
 
 

Tips

  • Change to the Race-Tour light weight piston.
  • Use a Race-Tour crankshaft.
  • Use a lightened flywheel.
  • Use a MRB Inlet manifold.
  • Use a modified V-Force reed valve.
  • Use the Race-Tour 6 plate clutch for the extra power increase.
  • Use between 19 - 15 degrees ignition timing.
     
  • Use a Dev-Tour exhaust for low to mid end power.
  • Use around 5.0:1 to 4.80:1 for touring pipes.
  • Use our Road cylinder head for a low to mid range tune.
  • Use a 1.5mm head gasket to set up a low to mid range tune.
     
  • Use a JL4 or NK race pipes for top end power.
  • Use around 5.20:1 to 5.0:1 gearing for high revving pipes.
  • Use our Road-Race cylinder head for a mid to top end tune.
  • Don't use a head gasket for a mid to top end tune.
 
there are no customer reviews at present
want to be the first to offer a review?
to place a review click here

Ask a Question?

If you would like to ask us a question about this product, please feel free to click here to ask a Question



If you feel something is not correct with this product description or image then please contact us using the same link