Coilpacked 1FZ-FE and H151F Swap

[hazard]

Just came back to this tjread to catch up and saw your post. This is a bit of a hijack so I will keep it short. On our US 1fz-fe heads, you can see the boss cast in for the mechanical fuel pump (for carbed engines available outside the US). This makes me wonder if the casting for the distributor is there too on the 105 head- only needing opening up and machine work to retro fit on a US engine. This may be desirable to get the better chamber design but also keep it simple and bolt up all other parts you had before. Poor man's upgrade lets say. Thoughts?

And Frank, how's it coming along?

Thanks for this post.
I am doing a teardown and buildup on my thread, I couldn't figure out what that boss and extra camlobe were for. I assumed it was for a pump and asked the question on my thread and got no answers.
Mystery solved.
Thanks
Sorry if I am hijacking also. I have a post also going off in a tangent, but I can now see how it happens. We are all so wonderfully enthusiastic

 

[dogfishlake]

Yeah sorry I wasn't replying to TheToyotaMan.

I thought the same thing, could I just have the hole bored for the distributor? But I do believe the intake ports are not the same so then you need to switch the intake manifolds. Is the throttle body the same? Is the TPS sensor the same? Etc. I think it's kind of a rabbit hole especially since you would have to import it anyways.

The better idea in my opinion is to let a shop CNC port one of our heads save the program and then each consecutive head you just pay to have them run the machine lol.

Very good point

 

[thetoyotaman]

I'm very curious about just a cam swap. I did this on my 95 Trooper. In 96 they updated to coil on plug from the coil pack and changed the cams. You can put the newer cam in the older motor and it really wakes it up. I wonder if it could work the same way on the 1FZ-FE? Thanks!

 

[FloridaFJ80]

My question refers to finishing the machine work where the distrubutor mount area is most likely cast in the head, then going back to the original ignition system. There may be other hurdles, but I haven't seen one to know. My idea comes from noticing on our US heads that the mechanical fuel pump mount is unused but it is cast in anyway, making the head useable for many markets

Pat, Yes cast is there its just opening up the hole for the distro.

Yeah sorry I wasn't replying to TheToyotaMan.

I thought the same thing, could I just have the hole bored for the distributor? But I do believe the intake ports are not the same so then you need to switch the intake manifolds. Is the throttle body the same? Is the TPS sensor the same? Etc. I think it's kind of a rabbit hole especially since you would have to import it anyways.

The better idea in my opinion is to let a shop CNC port one of our heads save the program and then each consecutive head you just pay to have them run the machine lol.

The holes for the intake manifold and exhaust manifold are the same as the US spec head. I used the gaskets from my us spec 1FZ-FE gasket kit. so in essence yes you can use the 105 head with 105 injectors. The throttle body is different its a lot smaller when compared the to US spec one, but if your using the same intake manifold it wouldnt matter. I will be at the shop tomorrow and will take pictures. I will also look into the the TPS Sensor. The 105 head does have a cam sensor on it.

 

[dogfishlake]

Pat, Yes cast is there its just opening up the hole for the distro.



The holes for the intake manifold and exhaust manifold are the same as the US spec head. I used the gaskets from my us spec 1FZ-FE gasket kit. so in essence yes you can use the 105 head with 105 injectors. The throttle body is different its a lot smaller when compared the to US spec one, but if your using the same intake manifold it wouldnt matter. I will be at the shop tomorrow and will take pictures. I will also look into the the TPS Sensor. The 105 head does have a cam sensor on it.

That's pretty cool stuff. Good knowledge base at least, and there may be someone that uses the set up. Thank you for looking.

 

[ThomasMore66]

I see the usual suspects are already here and I'm late to the party. That picture of the wiring harness is frightening.

 

[FloridaFJ80]

I see the usual suspects are already here and I'm late to the party. That picture of the wiring harness is frightening.

Found a guy in AU that will build my harness. He can build any harness, 80 to 105 or 80 to 2UZJ.

 

[Shanle929]

@FloridaFJ80 anymore updates? I've been pondering this swap for a few months myself. Unfortunately I put money into a remanufactured long block and did a new motor in my 1994. So I'm glad to see someone is doing this too. Seems to be the easiest swap possible for a few extra ponies and better for forced induction.

 

[ThomasMore66]

I really like this update.

 

[FloridaFJ80]

@FloridaFJ80 anymore updates? I've been pondering this swap for a few months myself. Unfortunately I put money into a remanufactured long block and did a new motor in my 1994. So I'm glad to see someone is doing this too. Seems to be the easiest swap possible for a few extra ponies and better for forced induction.

I am awaiting some parts to arrive from VZ so I can send my harness to AU to get built. Unfortunately the things in VZ have been difficult and @burbuja96 has had a hard time getting it out of the country via Fedex. I have ordered some more parts as well that I will be documenting, will also be installing the aux tank in the mean time.

 

[Shanle929]

I am awaiting some parts to arrive from VZ so I can send my harness to AU to get built. Unfortunately the things in VZ have been difficult and @burbuja96 has had a hard time getting it out of the country via Fedex. I have ordered some more parts as well that I will be documenting, will also be installing the aux tank in the mean time.

So would you think buying a whole front clip would be the way to go instead of a pulled motor?

 

[FloridaFJ80]

Yes and no. These engines never came in an 80 series. They were only found in a 105 series (LHD or RHD) and in VZ on a 70 series. All you really need is the correct harness to make it work on the 80 series. The engine does have an immobilizer so it adds to the complexity. I had to purchase a complete immobilizer ECU kit with chipped keys to make it work. This is the piece I am waiting for from VZ. I purchased a pulled engine and a complete 105 series vehicle harness. The engine harness is a RHD one so my guy in AU will take my 80 series LHD engine harness and make a complete new harness using the 105 series RHD harness (length is an issue on the 105 harness) and will then use some inputs from the 105 body harness for the immobilizer ECU. I have checked on my 105 harness and all plugs exist so I am good. Once I have the harness the rest is plug and play.

 

[FloridaFJ80]

Here are some pictures showing the difference of the 105 series throttle body in comparison with the 80 series. The 105 series one seems a lot smaller and she sure was expensive ($550).

 

[scottryana]

Just out of curiosity, I can see that the overall size is smaller but is the bore the same?

 

[Shanle929]

Any new updates? What did you searchbin eBay for your motor. I'm not seeing any. Is there a specific Australia one?

 

[burbuja96]

Yes and no. These engines never came in an 80 series. They were only found in a 105 series (LHD or RHD) and in VZ on a 70 series. All you really need is the correct harness to make it work on the 80 series. The engine does have an immobilizer so it adds to the complexity. I had to purchase a complete immobilizer ECU kit with chipped keys to make it work. This is the piece I am waiting for from VZ. I purchased a pulled engine and a complete 105 series vehicle harness. The engine harness is a RHD one so my guy in AU will take my 80 series LHD engine harness and make a complete new harness using the 105 series RHD harness (length is an issue on the 105 harness) and will then use some inputs from the 105 body harness for the immobilizer ECU. I have checked on my 105 harness and all plugs exist so I am good. Once I have the harness the rest is plug and play.

View attachment 1480560

Finally on your way brother!

 

[george_tlc]

Coilpack 1fz was also in the oz 70 series. Mate had one till his troopy was tboned, ran lpg+petrol. He now runs a v8 tdi troopy (good upgrade fuel economy-wise...).

cheers,
george.

 

[FloridaFJ80]

Wells its been a while since I updated this thread. To recap, I needed to mate my RHD 105 Coilpacked 1FZ engine to my 80 series harness. When I bought the engine I had purchased a complete 105 engine and body harness, the CP 1FZ has an immobilizer ECU, key transponder and required programmed keys (which I sourced in VZ for the 80 series). So I sent my US Spec 1FZ engine harness along with the 105 RHD CP 1FZ harness and the 105 body harness to AU. My friend in AU mated and extended the 105 CP 1FZ harness using my 80 series harness. Well after about 6 months I finally got my harness back and got to work.

Here are my picture updates with the new harness installed.

 

[FloridaFJ80]

I then proceeded to mate the CP 1FZ to the H151F tranny. I used all new OEM clutch, pressure plate, fork, throw out bearings, slave cylinder, master cylinder, etc. Wanted this to be done right from the get go. I mated the H151F to the US Spec Full time case. I had a part time case but didnt want to lose functionality with the ABS.

Anyone know the correct connector housing for the engine/trans side of the reverse switch. My harness didnt come with it. The Reverse switch has it but I need the other end. Any body have any idea>???

 

[FloridaFJ80]

After twiddling with getting this beast of an engine into the 80 she was finally in. Got my new 2kw OEM Toyota Reman Starter installed and wired. Pretty much started getting everything buttoned in and connected. She is coming together just perfect. Cant wait to get her started. Stay tuned for the start up video.