Thinking about a 20b-rew
07-16-09, 02:56 PM
#1
Junior Member
Thread Starter
Thinking about a 20b-rew
4500 for the engine, drivetrain and ECU from JPR here in LA, 800 for mounts from Banzai racing, 1500 for APEXi Power FC from Banzai racing , and 1800 to install. What else will I need?
Its going into a 89 Mazda RX7 Convertible Turbo II FC3S89
Its going into a 89 Mazda RX7 Convertible Turbo II FC3S89
07-17-09, 09:21 AM
#2
Engine, Not Motor
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The drivetrain and ECU from the Cosmo won't help you very much. All 20B Cosmos were automatic and I doubt that's what you want in your RX-7. The ECU needs to see the automatic transmission to operate properly and doesn't take well to mods that increase airflow.
The PowerFC won't run a 20B.
Keep in mind that almost no one keeps their 20B stock. In general every 20B installation uses a full standalone EFI system, a large upgraded turbo and is set up to churn out 400+ HP.
You will need a complete drivetrain on your 'Vert, which would generally take the form of the TII drivetrain.
There is a considerable amount of fabrication required to fit all the 20B stuff into the engine bay. All the plumbing (intercooler, exhaust, fuel) for one thing. The water neck is very tall so you will need to either modify it or go with a TII hood. I think the Bonzai mounts address the interference with the FC sway bar but they would be better to answer that.
The PowerFC won't run a 20B.
Keep in mind that almost no one keeps their 20B stock. In general every 20B installation uses a full standalone EFI system, a large upgraded turbo and is set up to churn out 400+ HP.
You will need a complete drivetrain on your 'Vert, which would generally take the form of the TII drivetrain.
There is a considerable amount of fabrication required to fit all the 20B stuff into the engine bay. All the plumbing (intercooler, exhaust, fuel) for one thing. The water neck is very tall so you will need to either modify it or go with a TII hood. I think the Bonzai mounts address the interference with the FC sway bar but they would be better to answer that.
07-17-09, 10:06 AM
#3
As Aaron already stated you cannot use the Cosmo drivetrain or ECU. The Power FC cannot run the 20B. Also our mounts are not $800 they are $215 shipped.
You will need:
FMIC & BOV
Engine management & ignition system
Upgraded cooling
Fuel system
Custom DP at a minimum, to run the twins(waste of time IMHO)
Clutch and Flywheel
BOP kit
Custom Oil cooler lines
Entire TII drivetrain
Plus a few thousand more in little stuff
You will need:
FMIC & BOV
Engine management & ignition system
Upgraded cooling
Fuel system
Custom DP at a minimum, to run the twins(waste of time IMHO)
Clutch and Flywheel
BOP kit
Custom Oil cooler lines
Entire TII drivetrain
Plus a few thousand more in little stuff
07-19-09, 05:59 PM
#4
Junior Member
Thread Starter
Cosmo lights and fenders
As Aaron already stated you cannot use the Cosmo drivetrain or ECU. The Power FC cannot run the 20B. Also our mounts are not $800 they are $215 shipped.
You will need:
FMIC & BOV
Engine management & ignition system
Upgraded cooling
Fuel system
Custom DP at a minimum, to run the twins(waste of time IMHO)
Clutch and Flywheel
BOP kit
Custom Oil cooler lines
Entire TII drivetrain
Plus a few thousand more in little stuff
You will need:
FMIC & BOV
Engine management & ignition system
Upgraded cooling
Fuel system
Custom DP at a minimum, to run the twins(waste of time IMHO)
Clutch and Flywheel
BOP kit
Custom Oil cooler lines
Entire TII drivetrain
Plus a few thousand more in little stuff
and pardon my mistake on the price, I was estimating the motor mounts and engine mounts combined.
As for the ECU - I have a shop that says they can put it in. The put a 13B-rew into an RX3 - It’s their shop car
Anyone know if the front body clips would bolt up with much modification?
07-19-09, 06:06 PM
#5
Junior Member
Thread Starter
The drivetrain and ECU from the Cosmo won't help you very much. All 20B Cosmos were automatic and I doubt that's what you want in your RX-7. The ECU needs to see the automatic transmission to operate properly and doesn't take well to mods that increase airflow.
The PowerFC won't run a 20B.
Keep in mind that almost no one keeps their 20B stock. In general every 20B installation uses a full standalone EFI system, a large upgraded turbo and is set up to churn out 400+ HP.
You will need a complete drivetrain on your 'Vert, which would generally take the form of the TII drivetrain.
There is a considerable amount of fabrication required to fit all the 20B stuff into the engine bay. All the plumbing (intercooler, exhaust, fuel) for one thing. The water neck is very tall so you will need to either modify it or go with a TII hood. I think the Bonzai mounts address the interference with the FC sway bar but they would be better to answer that.
The PowerFC won't run a 20B.
Keep in mind that almost no one keeps their 20B stock. In general every 20B installation uses a full standalone EFI system, a large upgraded turbo and is set up to churn out 400+ HP.
You will need a complete drivetrain on your 'Vert, which would generally take the form of the TII drivetrain.
There is a considerable amount of fabrication required to fit all the 20B stuff into the engine bay. All the plumbing (intercooler, exhaust, fuel) for one thing. The water neck is very tall so you will need to either modify it or go with a TII hood. I think the Bonzai mounts address the interference with the FC sway bar but they would be better to answer that.
07-19-09, 06:57 PM
#6
07-20-09, 06:22 AM
#7
To the OP, if you have a few days to spare, you should definitely read this thread:
https://www.rx7club.com/build-threads-292/kilo-racing-3-rotor-fd-conversion-325733/
https://www.rx7club.com/build-threads-292/kilo-racing-3-rotor-fd-conversion-325733/
Trending Topics
07-20-09, 07:06 AM
#8
Putting a 13b-rew into an Rx3 is easy, installing a 20B in an FC is not in the same category
We have a 13b-re Cosmo engine in our 91 Vert and a 20B in our 93 FD, I know what it takes to do this and it cannot be done for $1800. There is hardly anything that can be used from the front clip, you cannot use the auto trans (don't know why you would want to), ecu, engine harness, etc ....all you will be using is the block with intakes & turbos(if you keep them)
I know that we already answered this for you via email last week. If you think you can do this project for the budget you have laid out, then why are you asking us "what else will I need?" Then argueing about it? Just do it and tell us how far you get, start a thread and update it with your progress.
Take a look at our shop project cars for an idea of what it take to get this done correctly:
FC: http://www.banzai-racing.com/br_projects_vert_pg5.htm
FD: http://www.banzai-racing.com/20B_installation3.htm
We have a 13b-re Cosmo engine in our 91 Vert and a 20B in our 93 FD, I know what it takes to do this and it cannot be done for $1800. There is hardly anything that can be used from the front clip, you cannot use the auto trans (don't know why you would want to), ecu, engine harness, etc ....all you will be using is the block with intakes & turbos(if you keep them)
I know that we already answered this for you via email last week. If you think you can do this project for the budget you have laid out, then why are you asking us "what else will I need?" Then argueing about it? Just do it and tell us how far you get, start a thread and update it with your progress.
Take a look at our shop project cars for an idea of what it take to get this done correctly:
FC: http://www.banzai-racing.com/br_projects_vert_pg5.htm
FD: http://www.banzai-racing.com/20B_installation3.htm
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