markster58 0 Posted March 22 hello all need some advice on best road to go down with a 4.6 with distributor { 3.9 serpentine front cover } injection / ecu and best camshaft etc is it recommended to fit 4.0 pistons to raise the compression ? thanks mark Quote Share this post Link to post Share on other sites
Bowie69 991 Posted March 22 What are you trying to do with it? Quote Share this post Link to post Share on other sites
geoffbeaumont 200 Posted March 22 Has the engine already been converted to a distributor? If not, are you sure you want to go down that road? The distributor was always the biggest weak point. Even if you're putting it in something that doesn't have an ECU, it's worth considering EDIS controlled by MegaJolt (you don't need to go full MegaSquirt with fuelling control as well) or similar. Much more reliable, especially if it's going to get wet. Quote Share this post Link to post Share on other sites
garrycol 73 Posted March 23 4.0 pistons will raise the compression ratio depending on what you are starting off with - you need to change out the 4.0 gudgeon pins for the 4.6 gudgeon pins as the 4.6 pins have thicker walls. Quote Share this post Link to post Share on other sites
neil110 89 Posted March 27 (edited) In terms of Camshaft, I used a Kent cam from Turner engineering and it has transformed my 4.2 It produces so much more torque at usable rev/min that it has almost made the gearbox redundant and this is in a 110 CSW Might be worth your while looking at these. http://www.landroverresource.com/40_46_V8_overhaul.pdf http://www.super7thheaven.co.uk/wp-content/uploads/2014/09/Rover-V8-3528cc-3946cc-4275cc-Overhaul-Manual.pdf Edited March 27 by neil110 Quote Share this post Link to post Share on other sites
