BenHur wrote:Hi Guys
Can you guys that know these engines a bit better tell me the following: Will the Coil on plug setup of the later VVTi motors fit a older 1UZ with the two dizzy setup properly and where can I get my hands on a set like this?
redhummer wrote:Bennie...I seriously doubt it would be an easy mod as the cam covers are totally different. There would be issues being able to fit them properly with there mounting bolts etc. I will place two diagrams of the two engines for you to look at so you can decide. Personally I wouldn’t do it as it would not really make a noticeable difference in the performance or the smoothness of the running.
Hope the information will help and if there is anything else you might need please let me know.
Diagrams will follow
Why are you looking at doing this mod? Why not go for the 1uz vvt. It is a wonderful engine. There is a major increase of power between the non vvt and the vvt.
OK thanks Mike I suspected something like this but just wanted to make sure.redhummer wrote:Here are some of the pictures just to give an idea of the problems fitting the vvt igniters onto the non vvt engine.. I will look for some better drawings and post them if i can find some. It looks as though the tappet covers on the non vvt will be too narrow
I want to get rid of the twin dizzys as well as I believe that is one of the Achilles Hill of an otherwise brilliant and bulletproof motor.
My motto with installations like this has allways been KISS. remove everything not really nessasary to run the motor but still keep it feeling as close as possible to the OE setup. If a uninformed person gets into a setup I built I do not want him to detect that there is anything different to the working of teh system. There is nothing I hate more then a aftermarket system installed by a "go faster" and the engine's operation is unrefined.
So what I am to connect is this:
Single 36-1 crank Trigger.
Map sensor built into the ECU so you only need a vacuum pipe connecting back to the plenum
Intake Air Temp sensor. The ecu can run without this but this helps a bit to fine tune your AFR according to outside temperature
For the Idling Control Valve the Dicktator drives a PWM type device, so I have 2 choises. First is to replace the existing stepper motor with a ICV from an Golf/Audi/BMW etc like I have done before on other engines like 7M/3RZ etc. or alternatively Jaco Versveld is busy building a 4 wire stepper motor interface using a PIC for his 4Y using the CAM intake manifold. Once he has perfected that we can simply modify it to also work on the Toyota 6 wire stepper motor. This device will measure the duty cycle of the Dicktator's PWM signal and step the ICV accordingly.
The Injectors are controlled directly from the ECU
For ignition I will use either a coil near plug setup with 8 coils still running HT leads or a combination of wasted spark coil packs something like this. I am still trying to figure out what is the best coils to use. In the pick the guy used two Ford DIS 4 Tower Coil Pack from MSD (http://www.msdignition.com/Products/Coi ... _Pack.aspx) I have sent Turbo and No's a mail requesting a quote but I have not received a responce from them yet. I do not know of any other MSD agents in SA.
Alternatively I believe GoldWagen sells a nice coilpacks for a Polo or Willem (3RZ) told me about a Corsa coil pack that has built in ignitions which negates the use of external ones. Another option is the 3RZ coil packs which also has a built in igniter but their HT lead's terminal may be an issue :?
So for now I am tying to get as much info as possible to find the most suitable coil setup.
I still need to figure out which cylinders to pair on the wasted spark setup. Mark can you or Alex perhaps tell me which pistons are TDC together, what I have established so far is that it will be on opposite banks, but I have not got the vehicle here yet so I can not do a physical inspection.