ROGUE TROOPER Posted April 7, 2006 Share Posted April 7, 2006 Im after a 2.5 Petrol to "upgrade" for a mate and was wondering if the 2.5D block is the same as the 2.5P block and what can be exchanged? Ta Quote Link to comment Share on other sites More sharing options...
ROGUE TROOPER Posted April 8, 2006 Author Share Posted April 8, 2006 OK put it another way.........can I take a 2.5 Diesel, take the head off and put a 2.5 petrol head on it? Quote Link to comment Share on other sites More sharing options...
minivin Posted April 8, 2006 Share Posted April 8, 2006 OK put it another way.........can I take a 2.5 Diesel, take the head off and put a 2.5 petrol head on it? The diesels have a higher compression naturally, which I would have thought would have been down to the pistons, if not in conjunction with the heads which IIRC have hot-spots. I would think that trying to run a diesel lump as a petrol with a petrol head would mean too high a compression and eventually a head through the bonnet, if not severe pre-detonation and conrods S-shaped. Think it's a case of find a 2.5P lump and fit it in as it is, saves possible stressing of parts Quote Link to comment Share on other sites More sharing options...
ROGUE TROOPER Posted April 8, 2006 Author Share Posted April 8, 2006 OK, how about this, take a Petrol lump and add the Diesel timing gear INCLUDING the pump. Modify a diesel inlet manifold with mechanical injectors such as found on the Triumph 2.5Pi and you have a Petrol injection........MFI Maybe add the Turbo from a diesel............. Quote Link to comment Share on other sites More sharing options...
minivin Posted April 8, 2006 Share Posted April 8, 2006 Ahhhhh, I wonder, did the Trumpet 2.5 have direct injection, or inlet duct injection? would have thought the later but still a possible feesible option. Would get rid of the nasty carb problem turbo, oh do behave Quote Link to comment Share on other sites More sharing options...
ROGUE TROOPER Posted April 9, 2006 Author Share Posted April 9, 2006 Ahhhhh, I wonder, did the Trumpet 2.5 have direct injection, or inlet duct injection? would have thought the later but still a possible feesible option. Would get rid of the nasty carb problem turbo, oh do behave It had manifold injection. Quote Link to comment Share on other sites More sharing options...
minivin Posted April 10, 2006 Share Posted April 10, 2006 It had manifold injection. So, you going to put that twin plenum to one side and have a play? Quote Link to comment Share on other sites More sharing options...
isuzurover Posted April 10, 2006 Share Posted April 10, 2006 You can change a 2.25D into a 2.25P by removing the head, injector pump, and camshaft, and substituting a petrol head, cam, distrubutor, manifolds, etc. I would assume you could also do exactly the same with a 2.25P. I have also heard of people putting diesel cams in petrols to get better low-down torque (at the expense of top-end), but I don't know how true that is. The 2.25D has a heavier flywheel than a 2.25P, so you would get better low-down torque anyway. Don't know if the 2.5D is the same. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.