*NOW BOOKED FOR 2026* Transitmania 17 @ Santa Pod 17th to 19th July 2026 *ALL DETAILS HERE*


Swap 2.4D MK2 to 2.5D MK3

Transit Mk1 & 2 Forum. All Transits 1965 - 1986

Moderator: Luke

Swap 2.4D MK2 to 2.5D MK3

Postby azard » Fri Oct 17, 2025 9:24 am

Hello everyone,
I'm new to this forum and I signed up because I'm looking for a solution to swap the engine in my MK2 2.4D for a more powerful and less diesel-hungry one.
It seems that the MK3 2.5D engine fits fairly easily!?
Do you have any information or links to carry out this operation, and do you know exactly which engine I should be looking for?
azard
Newbie
 
Posts: 1
Joined: Fri Oct 17, 2025 9:17 am

Re: Swap 2.4D MK2 to 2.5D MK3

Postby Ollie » Wed Nov 05, 2025 9:19 pm

I like Di s, theyre noisy but I find it a happy noise, had a very early one in a Mk2 years ago and it was great. This would have been very similar to that fitted to a mk3 and theyre nice and simple as they have pancake airfilters on a nice compact manifold, but theyre going to be pretty rare these days as the vans rotted away years ago. I have also had a few later smiley front transits around late 90s - these ones came with what is usually called the banana engine as its intake manifold has long runners, theyre a bit more powerful and potentailly a bit more efficient, and of course they tend to come attached to the 5 speed MT75 box which is pretty tough.
these are perhaps more common by now being later and you'd get the chance to potentailly test drive it without needing such a big dustbin to sweep the van into afterwards.
There are turbocharged ones with conventional fuel pumps which are rare as rocking horse poop, and would be the nicest to use. the other later turbos all used the Lucas epic system and these engines carried on in LDV vans as well, they drive fine but the epic system isnt rated as anything special reliability wise.

realistically your not going to get a lot of choice if you want to test the van first, and I much prefer to have driven the donor first rather than worrying too much about exactly which model it is!
A quick scan of ebay has an early one misdescribed for 363 but doesn't look like youd get to test drive it!

Good luck
Ollie
User avatar
Ollie
Transit Devotee
Transit Devotee
 
Posts: 694
Joined: Sat May 06, 2006 10:57 am
Location: Birmingham

Re: Swap 2.4D MK2 to 2.5D MK3

Postby dumper » Fri Nov 07, 2025 1:06 am

Fitted a early Bosch mk3 into a mk2 it didn’t have the anti theft stop on the pump the banana engine has a multi plug with multiple black wires only one will energise stop valve and you have to put power to them one at a time till you can hear it click I’ve been told so not sure if true ,the viscus fan on the mk3 is on the idler pulley I remember fitting a mk 2 water pump and fan not sure if it was for it not clearing something or because the mk2 water pump was nearly new and not sure what I did with the vac pump the mk2 was belt driven but if you get a mk5 engine it’s on the back of the alternator so will have to modify the pipe work and alternator wiring.
2025 MK 8 L3 H3 Motorsport campervan
Past camper vans
1974 mk1 v4 with 2.0 pinto fitted
1986 mk3 2.5 di swb
1990 190 lwb 2.5 di
1998 100 lwb 2.5 di
2006 350 jumbo 135 tdci
2015 MK 8 L4 H3 motorsport campervan
dumper
Transit Extremist
Transit Extremist
 
Posts: 6375
Joined: Sun Jan 20, 2008 2:56 pm
Location: Lincolnshire


Return to Mk 1 & 2



Who is online

Users browsing this forum: No registered users

This site contains affiliate links for which we may be compensated.