1kz - direct injection twin cam head

[Rocher Lurker Find all posts View Profile Close Rocher]

Hey guys,
Hoping there is a diesel guru on here who would know/be able to find out if a 1kd head would fit on a 1kz block. I know the pistons will have to be changed to suit the direct injection.
Plan is to use a 4m40 mechanical injection pump and 1hd-t injectors to get a all mechanical, direct injection, twin cam 1kz/d hybrid. It would work out cheaper to use a rebuilt 1kz bottom end with new pistons and a fully rebuilt 1kd head then buy a second hand 1kd, hence the question
Also anyone know of any differences in the 1kz and 1kd bottom ends besides the pistons?

One other thing you guys may know is about the balance shaft, is there a good reason not to delete it while rebuilding the motor?
Cheers Luke

[carco Advanced Member Find all posts View Profile Close carco]

Bumping this one as I'm very keen too.
Why pay big $$ rebuilding a KZ, can't be far off building a hybrid KD.
So both blocks are the same, KD has bigger diameter head studs, pistons need to be KD's, unsure of pin height so rods would have to be checked, hand made injector lines using modified 6-cylinder Toyota injectors, hand built injector clamps, 4-bungs in the cam cover, KZ sump swap, engine mount swap.
Leave the balance shafts etc as is.
A fair bit of work, can see why blokes just drop in a D4D and then try to sort out the immobiliser/wiring hassles.

https://www.youtube.com/watch?v=lxM0UvFpIPo

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

What's wrong with your 1kz?

[carco Advanced Member Find all posts View Profile Close carco]

I'd like more hp which would be achieved with a chip, boost, exhaust etc but then there's that constant worry about cracking the head.
The KD head doesn't have the cracking rep that the KT has, so my thinking is why not go for the better breathing head that can take extra heat.

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

I'd like more hp which would be achieved with a chip, boost, exhaust etc but then there's that constant worry about cracking the head.
The KD head doesn't have the cracking rep that the KT has, so my thinking is why not go for the better breathing head that can take extra heat.

Sell 1kz car, buy 1kd car, gets you a better transmission, fresher vehicle.
30% power upgrade.

[carco Advanced Member Find all posts View Profile Close carco]

Originally planned on buying a 120 but really happy with the 90.
Only thing I can't figure is why did Toyota come up with that front end and then do it so right in the 120. Whoever designed the 90's upside down lower ball joint idea needed the sack.
As for the KZ, I've been a tinkerer all my life so why stop now.

[ejukated Senior Member Find all posts View Profile Close ejukated]

Bumping this one as I'm very keen too.
Why pay big $$ rebuilding a KZ, can't be far off building a hybrid KD.
So both blocks are the same, KD has bigger diameter head studs, pistons need to be KD's, unsure of pin height so rods would have to be checked, hand made injector lines using modified 6-cylinder Toyota injectors, hand built injector clamps, 4-bungs in the cam cover, KZ sump swap, engine mount swap.
Leave the balance shafts etc as is.
A fair bit of work, can see why blokes just drop in a D4D and then try to sort out the immobiliser/wiring hassles.

https://www.youtube.com/watch?v=lxM0UvFpIPo

good info, be interested to see how you go

[ejukated Senior Member Find all posts View Profile Close ejukated]

Originally planned on buying a 120 but really happy with the 90.
Only thing I can't figure is why did Toyota come up with that front end and then do it so right in the 120. Whoever designed the 90's upside down lower ball joint idea needed the sack.
As for the KZ, I've been a tinkerer all my life so why stop now.

How did you go with the Hybrid?