Offroad-Express

i have a d21 navara with an sd23 motor which is poked. i have a td27t that i want to drop in to replace it. i sourced a starter motor, airbox, bellhousing and front coverplate/snout to fit new engine. can anyone help with any info at all regarding what else is needed. am i able to use existing p/steering unit, a/c, alternator or radiator. any help really appreciated

TWilliams wrote:i have a d21 navara with an sd23 motor which is poked. i have a td27t that i want to drop in to replace it. i sourced a starter motor, airbox, bellhousing and front coverplate/snout to fit new engine. can anyone help with any info at all regarding what else is needed. am i able to use existing p/steering unit, a/c, alternator or radiator. any help really appreciated

first question. what gearbox/transmission do you have?

71c so new bell housing is a match. 5 speed manual

i did a td23 to td27t swap and found they had diffrent water pumps so needed a new fan to fit the 27t other than that sound like you should have everything else you need

cool. thanks. looks like the alternator and a/c unit have been swapped around from the sd to the td series engines so i may need to make up some brackets. guess i'll find out soon enough( if it ever stops raining)

why? sd23 to sd33t from a early patrol would make more sense

Some wiring loom plugs appear to 'plug and play' but there both very different.

slidenyo wrote:why? sd23 to sd33t from a early patrol would make more sense

Good luck. You seen how long those are?
And td newer series and much more common

yup deceptively short chap,
http://www.youtube.com/watch?v=32zI71IVGGs
here's one on the tube don't have pics of our old one,
two more cylinders made towing so much easier

kbjj wrote:Some wiring loom plugs appear to 'plug and play' but there both very different.

bugger. was hoping not to open that can of worms. Knew i'd need to rewire startermotor though. which leads did you find needed to be re-routed?

TWilliams wrote:

kbjj wrote:Some wiring loom plugs appear to 'plug and play' but there both very different.

bugger. was hoping not to open that can of worms. Knew i'd need to rewire startermotor though. which leads did you find needed to be re-routed?

From memory, nearly every wire.

slidenyo wrote:yup deceptively short chap,

Yea I guess after you hack into firewall, and cut out all radiator support panels etc it does make it short? But then td42 would be a better option...


Back to topic,
I did the sd - td conversion many year ago, was very simple to wire it enough to get running.
Main earth wire battery to engine,
Main engine power wire from battery to starter.
Key wire from existing setup to start trigger
Wire from ignition 'on' to injector pump
Alternator big wire to battery +
Alternator small wires (may pay to double check this) one is wired to ignition 'on', other is the wire that feeds back through battery light on dash.
If it was previously external reg type, do google search of how to convert to internal reg. Very simple conversion.
Tacho will take some nutting through. Search "phaedrus's" (spelling?) profile, he seems to be extremely knowledgeable in this regard. (search his posts, info prob there).
Oil sender and temp sender wiring pretty simple, just find original wires and adapt to fit new engine.
Think thats about it for wiring.
Nath

hey guys, thanks heaps for all the support info. its slowly coming together however i have not found a clutch fork to fit my new bell housing. the old one seems too short. if any one has one to fit a d21 '93 navara/terrano td27t, on a 71c box, i'd love to take it off their hands. cheers, tim.