Compound turbo 1kz-te project (5 Viewers)

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Hahahaha, I'm sure the gf would not mind!... But how can you leave this?!
ImageUploadedByIH8MUD Forum1431346438.965747.webp


I'm sorry I should not have hijacked it!!
 
Just found this thread. Really cool stuff, I thought about buying a 1KZ in the states here, then later making it a 1KD hybrid with a mechanical pump or get crazy and go to a standalone ECU($$$) to tune the snot out of it. 1KD half-cuts or engine packages aren't cheap, but I did manage to find a half-cut for $3200USD with all maintenance documents and only 110k miles on the clock. Of course shipping is about $1k. I found a chap in Tas selling a Hilux for cheap, so I bought it, and now planning to import the half-cut for my own swap into my 88 4Runner/Surf.

Have you mentioned what mechanical IP you are using? I read that the VE Pumps by Bosch are very robust and cheap to rebuild. I believe the Mitsu 4M41 came with a 2.8 Mech injected diesel and that pump is suppose to have a bunch of headroom for the 1KD. I read it bolts on with little modification. I like the computer control for optimizing efficiency in most conditions, but the simplicity of a DI engine and a few wires to make it run is really appealing.
 
Just found this thread. Really cool stuff, I thought about buying a 1KZ in the states here, then later making it a 1KD hybrid with a mechanical pump or get crazy and go to a standalone ECU($$$) to tune the snot out of it. 1KD half-cuts or engine packages aren't cheap, but I did manage to find a half-cut for $3200USD with all maintenance documents and only 110k miles on the clock. Of course shipping is about $1k. I found a chap in Tas selling a Hilux for cheap, so I bought it, and now planning to import the half-cut for my own swap into my 88 4Runner/Surf.

Have you mentioned what mechanical IP you are using? I read that the VE Pumps by Bosch are very robust and cheap to rebuild. I believe the Mitsu 4M41 came with a 2.8 Mech injected diesel and that pump is suppose to have a bunch of headroom for the 1KD. I read it bolts on with little modification. I like the computer control for optimizing efficiency in most conditions, but the simplicity of a DI engine and a few wires to make it run is really appealing.

That would certainly make a good project for you! I have a 14B dyna rotary pump, with a Bosch boost compensator. It is a knock off of a Denso pump, which is a knock off of a Bosch pump. It has a 12mm plunger, which is the largest of any rotary pump so it should push more than enough fuel.


Those injectors certainly look interesting, I wonder what they did to them.
 
My guess is they figured out that the internals of another injector would fit.

I emailed them for more information.

The film says hybrid pump, injectors and intercooler.

1KD-mechanical Hybrid.webp
 
That would certainly make a good project for you! I have a 14B dyna rotary pump, with a Bosch boost compensator. It is a knock off of a Denso pump, which is a knock off of a Bosch pump. It has a 12mm plunger, which is the largest of any rotary pump so it should push more than enough fuel.


Those injectors certainly look interesting, I wonder what they did to them.

The Cummins 4BT VE uses 12mm plungers and those pumps have been bench tested delivering a solid 180cc/1000 shots. That's 800Nm worth of fuel on a 4 cylinder.

I have an 11mm VE pump on a landrover 300tdi engine here. Assuming the same stroke it should be good for ~125cc/1000 shots. Interestingly the Bosch numbering scheme goes up to 14mm. I haven't come across a 13 or 14mm pump, but one of the guys on 4BT swaps was building his own VE pumps with big fuel delivery and he was keeping the information quiet.
 
I believe some Isuzu light truck engines use 13mm plungers in VE rotary pumps.
I know of one example of a 1hd-t being fitted with 13mm plungers
 
The benefit of bigger plungers isn't just more fuel. But injection in a shorter rotation of the crank.

A pump at its limit has to inject over a wide crank angle so some fuel is too early and some too late.
 
I've read lots about the toyota diesel, but we only got the 2L in small quantities if I recall. The idea of a ve pump on a 1kd or kz is very appealing here in the states because I understand that the parts are more common to other diesel IT'S thus making rebuild kits and parts more available. The research I've done on the interwebs claims that the Denso pumps the toyotas run are unheard of at common diesel mechanics. Again this is what I've read, I have no first hand experience.
 
I've read lots about the toyota diesel, but we only got the 2L in small quantities if I recall. The idea of a ve pump on a 1kd or kz is very appealing here in the states because I understand that the parts are more common to other diesel IT'S thus making rebuild kits and parts more available. The research I've done on the interwebs claims that the Denso pumps the toyotas run are unheard of at common diesel mechanics. Again this is what I've read, I have no first hand experience.

As rare as they are over there, the best part is the interchangeability with the Zexel and Bosch pumps. So anyone who has experience in VE pumps will be more than capable to do work on the Denso one's too.
 
Thanks for the clarification. I should have also said it is easier to find a rebuilt zexel or bosch and cheaper then the Denso as an alternative.
 
Zexel, bosch, Denso, diesel Kiki are all licensed versions of the same thing.
 

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