VVT searching makes my eyes hurt.
 

I been at the search for hours. Just looking for the best way to get my DD back on the road. I lost compression in cyc 1 on my 2000 and just bought a 2001 motor complete. 2000 is mostly stock DD, except header, re-route, and cold air intake.

Option 1)So should I pull the 2000 head and swap it onto the good 2001 short block to eliminate the VVT.

Option 2)Put the complete 2001 motor in the 2000 car not using the VVT for now and maybe down the road hook it up. I read is can be run with out the VVT wired up, right? Just have or wire up the cam sensor. Anything else different that I need to address?

I'm leaning to option 2

I also found in a search this attached page. Is it true that I could activate the VVT with just 12V switch. I know its not the optimal way of doing things but a flip of a switch it goes from more tq down low to a more rev happy motor. Day spirited driving vs driving in traffic.

Thanks!

http://www.diyautotune.com/catalog/v...57c1c357eee5d5

I would lean toward option 2 and this controller. But why wait? I would assume the easiest time to make this happen was while you were installing the new engine.

Option two. The car will feel doggy without the VVT hooked up, but you can run it like that until you get the controller.

I never read much about this VVT before because I did not have it, but when I got the 2001 motor..... I originally thought it had to be controlled by MS or another standalone, but seems this controller can work on its own, nice.

What else do I need for the swap. I see the cam sensor is no longer on front of the valve cover, where is it? It also has a waste spark system on it I guess I just remove it and go back to the 2000 coil pack.

My NA with a VVT engine but no VVT control doesn't feel doggy.

Hell it's miles quicker than my mates otherwise completely stock NA.

You loose midrange sure and it's not optimal, but to imply the car will be a dog afterwards is untrue.

The Cam Sensor is on the rear part of the valve cover, just open up the harness and pull the cables back so they reach the new location.

There are no easy way to bolt the 99/00 coil packs to the back of the VVT valve cover. Elongate the connectors and use 2001 COPs is one way (moving the injector/coil/water temp harness over from the 2000 engine, the 2001 one is different).

pretty much any miata N/A is a dog :giggle:

True, I should've added 'relative' in there ;)

So elongate what?

I like to keep the cops if possible.

One more, keep the reroute I had on the 2000 or don't bother now that its a 2001 motor.

After reading around on other car forums, i learned that vvt tunig is nOthing new under the sun. Its a total waste to run fixed cam gears when u can have variable.

Your switch idea will really not be that great. Better than no vvt head ever though.

There's recent threads on this and the COPS deal... you have to remove a lot of material from the 01 VC and one or two of the COPS to make the toyota coils work, hours of work... little benefit (if any other than not redoing your harness)

reroutes are a no-go on VVT heads with VVT head gaskets. There is debate about the merit of VVT heads w/ NA 1.8 head gaskets and a reroute.

Anyone got the wiring diagram to connect the 2001 COPs to the 2000 harness.

everything 99+ is return-less

Just read that. My bad.

1. Move the injector+coil+water temp harnes from the 2000 head to the 2001 one (you want to use the injector harness that is matched to your main engine harness).
2. make the cables to the coilpack connectors longer so they will reach the COPs (keep track of which one is 1-4 vs 2-3)
Done.

The reason to exchanging the injector harness is that they a different regarding the coil connections (the 01 harness have the coils connected to the main harness and not through the injector harness which is then used for grounds).

In the US at least.
98-00 in JP and EU have return systems. Just to confuse us.

IcantDo55: what did you end up doing?

I find it interesting to learn that the VVT cam sensor works with the stock 2000 ECU, and possibly VVTuner? That might be kinda fun.

I'm in a similar position as I just picked up a VVT head and I'm trying to decide what I want to do with it. Sorry for the thread resurrection but I figured 49 days wasn't so bad ;)

I have not read any issues with cam sensor other than having to extend the wires.

I ordered a clutch and as soon as that comes in I'll be doing the swap, prob next week.
I'll keep the thread updated.

Only thing I'm think I'm still hazy on is the coil wiring, but ill figure it out.

Mazda used the same part for the cam sensor on all NB Miatas, 99-05.