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  Name Product Id Price
  OIL FEED PIPE - L/R 2.25 PET+DSL (CYL HEAD) 275679    $110.00  
  BANJO BOLT - OIL FEED PIPE - L/R 2.25 PET+DSL 597563    $10.00  
  WASHER - L/R (COPPER) BANJO BOLT (oil feed pipe to cyl. head) 232039    $1.00  
  CYLINDER HEAD (NEW) - 2.25 PETROL (EARLY) DEEP THERMOSTAT BOWL (7:1 CR) 598086   $1,900.00  
  WELSH PLUG (BACK OF CYLINDER HEAD) - L/ROV (1 3/8") (1.375") screw in (1 req.) 230250   $14.00  
  WELSH PLUG (TOP OF CYLINDER HEAD) - L/ROV (1") screw in (4 req.) RTC4250   $10.00  
  HEAD SET BOLT SHORT 2.25 AND 2.5 LITRE PETROL 1/2" UNF X 2 5/16" (4 per engine) 279648   $15.00  
  HEAD BOLT 2.25 LITRE 2 LITRE DIESEL AND 2.5 PETROL 1/2" UNF X 4 9/16" (9 per engine) 247051   $10.00  
  HEAD BOLT (6 11/16" LONG) 2.25 S2/2A up to Engine suffix 'H' inclusive, 7:1 c/r (5 per engine) 279650   $15.00  
  HEAD BOLT (1/2 UNF X 4 1/8" LONG) 2.25 From engine suffix J onwards 7:1 c/r or Suffix A onwards 8:1 c/r (5 per engine) 554621   $25.00  
  CYLINDER HEAD BOLT KIT - L/R 2.25 PETROL (7:1 c/r from engine suffx J, 8:1 c/r from engine suffix A) BAP225   $218.00  
  FASTENER KIT (fixing rocker bracket to cylinder head) 2.25 Petrol 525500K   $17.50  
  FASTENER KIT - INLET & EXHAUST MANIFOLD - 2.25 4 CYL PETROL 606989   $100.00  
  WELSH PLUG - L/ROVER CENTRE OF HEAD 7/8 OR 15/16 250830 525497   $6.00  
  CAM BRG SET - L/R 2.0+2.25+2.5+200+300 TDI (FRONT BEARING OIL FEED HOLE MAY NEED TO BE RE-DRILLED TO LARGER DIAMETER, COMPARE YOUR OLD FRONT BEARING HOLE SIZE TO NEW BEARING) 4C3172   $110.00  
  CAMSHAFT RETAINING PLATE 2.25 ERC1561   $40.00  
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7:1 head is 3.700 in thick, chamber volume is 91 cc.
8:1 head is 3.600 in. thick, chamber volume is 75.2 cc.

7:1 pushrod length 7.300 in (I am yet to find a part number for this, according to my books, all 2.25 petrol use part no. 546798, S11+11A+111)
8:1 pushrod length 7.175 in

Milling .100 in. makes a 7:1 head 8:1. Almost exactly.

If you modify a 7:1 to 8:1, use 8:1 pushrods. Otherwise the rocker geometry is off, and the possibility of fouling the rocker exists. By rocker geometry, I mean the angle that the rocker arm contacts the tip of the valve stem. If the longer pushrods are used in place of the shorter (correct) ones, the rocker arm depresses the valve with it's very tip, concentrating wear and forces at a place where the rocker was not designed to be operated. This can cause premature wear of the valve stem, unusual wear of the rocker arm, and failure (breakage) in extreme cases.

By Hank Rutherford, Steve Denis, Peter Ogilvie
www.lrfaq.org/Series/Engine.CylinderHead.html



BRITISH AUTO PARTS PTY. LTD.
ABN: 62 240 165 265
Unit 3, 23 Brunsdon St.,
Bayswater, Victoria 3153
Phone: 1300 760 125 
        or  (03) 8736 7595

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