Mazda 323 GTX 1.6 Turbo setup on a '90 1.6 Miata
#1
Mazda 323 GTX 1.6 Turbo setup on a '90 1.6 Miata
Hi guys,
i'm new to THIS particular forum, but I know the common rules about the forums. I did search a lot, but I didn't find anything specific that would calm down my needs of knowledge.
So the thing is, I have a spare 323 GTX 1.6 block (pre '89, which means it has thick rods), copper head gasket (actually two of them, to be precise). My friend has the GTX ECU. I was wondering a lot about making a bit more power out of my Miata and thought about two options - supercharger or turbocharger.
So the main question is, is Miata compatible with the GTX ECU? I mean, is it possible to plug that GTX ECU to my Miata, put the magical turbo stuff into it and go choo-choo?
Since this is a budget project, and i live a few thousand kilometres away from the West (Lithuania here), I would like to avoid getting VEMS or MS, cuz they are pretty expensive here (considering our salaries).
So is it possible? If the ECU fits, won't there be problems with differences between distributors (not sure if this is the word for the part, that sends electrical impulses to spark plugs)? Because Miata has an electrical one, ant the B6T has a mechanical one?
Sorry, English is definetely not my native language, so please, ignore my mistakes
i'm new to THIS particular forum, but I know the common rules about the forums. I did search a lot, but I didn't find anything specific that would calm down my needs of knowledge.
So the thing is, I have a spare 323 GTX 1.6 block (pre '89, which means it has thick rods), copper head gasket (actually two of them, to be precise). My friend has the GTX ECU. I was wondering a lot about making a bit more power out of my Miata and thought about two options - supercharger or turbocharger.
So the main question is, is Miata compatible with the GTX ECU? I mean, is it possible to plug that GTX ECU to my Miata, put the magical turbo stuff into it and go choo-choo?
Since this is a budget project, and i live a few thousand kilometres away from the West (Lithuania here), I would like to avoid getting VEMS or MS, cuz they are pretty expensive here (considering our salaries).
So is it possible? If the ECU fits, won't there be problems with differences between distributors (not sure if this is the word for the part, that sends electrical impulses to spark plugs)? Because Miata has an electrical one, ant the B6T has a mechanical one?
Sorry, English is definetely not my native language, so please, ignore my mistakes
#2
I can't say for sure, but I'd say you have a pretty good shot at making this work. The Miata engine is based on the GTX, probably runs the same sensors (including the cam angle sensor), and at the very least you could just run the GTX harness into the engine bay if there are some huge differences.
Does the GTX ecu use the same harness connectors as the Miata? If so, find ecu pinouts for both and compare. It might be a matter of moving a couple pins around or adding a new lead or two (the knock sensor comes to mind for one).
Does the GTX ecu use the same harness connectors as the Miata? If so, find ecu pinouts for both and compare. It might be a matter of moving a couple pins around or adding a new lead or two (the knock sensor comes to mind for one).
#7
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^but you can use the Miata Cam Angle Sensor. But you will find that the Miata ECU directs the sparks instead of a distributor so the GTX ECU will have no device to do that. I hate telling someone to use a rising rate fuel pressure regulator and a Bipes to retard the spark, but those are a cheap option.
Please, has anyone got a cheap MS1 to sell to this man?
Please, has anyone got a cheap MS1 to sell to this man?
#10
^but you can use the Miata Cam Angle Sensor. But you will find that the Miata ECU directs the sparks instead of a distributor so the GTX ECU will have no device to do that. I hate telling someone to use a rising rate fuel pressure regulator and a Bipes to retard the spark, but those are a cheap option.
Please, has anyone got a cheap MS1 to sell to this man?
Please, has anyone got a cheap MS1 to sell to this man?
#11
So I guess, that without cutting my firewall and getting a GTX distributor (which is more rare than Lindsay Lohan being sober) i should get MS1. But, what about Piggyback ECU? I heard, that you can't get rid of MAF with a piggy (which is a bitch, because with these old MAF's of Mazda it's really hard to catch all the bug's in your fuel map)?
#14
by the way, i did almost the same stuff with a B6 engine (16V sohc) in an Mazda MX-3. Parts i took from the GTX for that:
ECU
Injectors
Turbo
Harness
Distributor
MAF
All other stuff was fabricated. The big question is that Miata and GTX engines are the same and what is their ECU compatibility when going turbo
ECU
Injectors
Turbo
Harness
Distributor
MAF
All other stuff was fabricated. The big question is that Miata and GTX engines are the same and what is their ECU compatibility when going turbo
#16
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There sure are a lot of nice people on this forum. I'm happy people are willing to help each other.
Piggybacks generally don't work very well and are limited in power production. Finding a good, cheap, used MS1 would be ideal. I'm using an MS1 and it works very well for me. A newer ECU would have more features but everything I really need to run is in the MS1.
Piggybacks generally don't work very well and are limited in power production. Finding a good, cheap, used MS1 would be ideal. I'm using an MS1 and it works very well for me. A newer ECU would have more features but everything I really need to run is in the MS1.