The early Series 1 models were fitted with a low compression (6.6:1) cylinder head (UE2299). Continental models were fitted with a 7.25:1 compression cylinder head (UE2405). The later Series 1 models were fitted with a high compression (8:1) cylinder head (UE3764). We offer an engineering service to convert your early 6.6:1CR cylinder head to the later 8:1CR cylinder head. Although Rolls-Royce did not publish torque tightening figures for the straight six engines we are often asked for them. From speaking to fellow members of the RRBSA we propose that you work to the following settings: Main bearing caps 30 lb/ feet Big end bearing caps 30 lb/ feet Cylinder head bolts 40 lb/ feet.
We are now manufacturing cylinder heads to order. Please <a href="http://www.flyingspares.com/contact-us.html">contact us</a> for more information.</p>