Familia GTX engine swap or alternative legal turbo install
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SuperMazdaKart
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Craig
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Re:
Astroboysoup wrote:Craig wrote:AVO Stage 1 is fully EPA legal, and provided you get it installed by their agents you get the paperwork to prove it!
How much for an AVO stage 1 kit?????
Been a while since I priced one but give them a call perhaps?
www.avoturbo.com
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Astroboysoup
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Re:
`Zoombie wrote:just use the GTX rocker cover on your NA6 then, they can't be that attentive to detail when assessing it can they?
I MIGHT be able to get away with that... but they do check engine numbers and i think they want proof that its is the engine.
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Duj
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Re:
Astroboysoup wrote:Duj wrote:buy my gear and drop in a Series 6 13B-REW motor or even jus a cheap import engine,It will have awesome power! and your in adelaide so it would make your life even easier to do it!
no stuffing around peter i have almost everything to do the conversion!
it wont be legal but just keep it quiet and u will be fine, cops dont assume anything when they look at my car as it no longer has a big FMIC and i have a fake pea shooter exhaust.
looks like a harmless little mx5
nah...
what ever engine conversion I do it HAS to be legal.... working at the Department for Transport, Energy and Infrastructure has its advantages and alot of disadvantages. At the moment the inspection guys just drive pass me.
Ah well peter
, maybe you me and vu can go cruisn together when all is engineered and sorted.I suppose il hear from ya in a few years then? 
getting things engineered is such a lenghthy and expensive process here in adelaide,
keep at it !
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Sean
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Re:
Astroboysoup wrote:what ever engine conversion I do it HAS to be legal.... working at the Department for Transport, Energy and Infrastructure has its advantages and alot of disadvantages. At the moment the inspection guys just drive pass me.
Organise a meeting with your boss to seek special exemption for MX5's, then get him to go to teh minister
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SuperMazdaKart
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Moggy
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Sean
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Re:
Moggy wrote:Okay piccie is attached...
You might be interested to know a 1.8 intake manifold from an early 1.8 MX5 will bolt directly onto that engine and tidy things up a bit ;)
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Astroboysoup
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oh mi god... you're my hero..!!!
hehehehe
I was initially planning on doing the 1.6 engine conversion but i'll do as much research as i can for both alternatives.
now.. are both the engines a direct swap replacement, as in, i don't have to get custom mounts or a different gear box etc.???
hehehehe
I was initially planning on doing the 1.6 engine conversion but i'll do as much research as i can for both alternatives.
now.. are both the engines a direct swap replacement, as in, i don't have to get custom mounts or a different gear box etc.???
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Sean
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Re:
Astroboysoup wrote:oh mi god... you're my hero..!!!
hehehehe
I was initially planning on doing the 1.6 engine conversion but i'll do as much research as i can for both alternatives.
now.. are both the engines a direct swap replacement, as in, i don't have to get custom mounts or a different gear box etc.???
Keep your MX5 intake manifold and sump, oil pickup and CAS.
Custom exhaust manifold or adapter
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Moggy
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Well, I'd have to recommend doing the 1.6 conversion, as it is about 10 times easier, however I wanted to do the 1.8 for the bigger capacity and bigger injectors.
To do the 1.8 you need a 1.8 mx5 sump and mounts ($100 genuine from Mazda) and maybe an intake manifold (if you can find one) and rocker cover (if you prefer the mx5 one).
Everything else you can swap from your 1.6 including all the coolant fittings etc.
You also can't use the dizzy on the GTX motor as it physically won't fit against the firewall so I used my mx5 coils and CAS. If you do that you need an aftermarket computer.
The benefits of using the 1.6 over the 1.8 are you don't have to buy the sump and mounts (ie you don't have to find them) and can use the mx5 intake manifold (the GTX one faces the wrong way so you have to get the throttle body welded on the other end to use it). Also the 1.6 has MUCH stronger conrods than any other B series engine.
The advantages of using a GTX engine over an mx5 one are the bigger injectors and lower compression ratio (about 8.2:1 - nice and turbo friendly...).
You will also need a custom exhaust manifold ($500-600) and dump pipe and I put in a whole new 2.5\" exhaust as well. I also changed the turbo as the stock VJ20 is tiny and runs out of puff above 16psi. I used a stock R33 skyline turbo ($300) - the benefit of having a small engine is you can get a good turbo for it for bugger all...
All up cost me about $7000 (I was aiming for $5000 - oh well - in hindsight I could have knocked a grand off that) and I did all the work myself (except exhaust and other custom fabrication).
I haven't quite finished yet - it is in and running but it goes in for a dyno tune on Wednesday. That's the final thing so I can let you know how that goes as well.
To do the 1.8 you need a 1.8 mx5 sump and mounts ($100 genuine from Mazda) and maybe an intake manifold (if you can find one) and rocker cover (if you prefer the mx5 one).
Everything else you can swap from your 1.6 including all the coolant fittings etc.
You also can't use the dizzy on the GTX motor as it physically won't fit against the firewall so I used my mx5 coils and CAS. If you do that you need an aftermarket computer.
The benefits of using the 1.6 over the 1.8 are you don't have to buy the sump and mounts (ie you don't have to find them) and can use the mx5 intake manifold (the GTX one faces the wrong way so you have to get the throttle body welded on the other end to use it). Also the 1.6 has MUCH stronger conrods than any other B series engine.
The advantages of using a GTX engine over an mx5 one are the bigger injectors and lower compression ratio (about 8.2:1 - nice and turbo friendly...).
You will also need a custom exhaust manifold ($500-600) and dump pipe and I put in a whole new 2.5\" exhaust as well. I also changed the turbo as the stock VJ20 is tiny and runs out of puff above 16psi. I used a stock R33 skyline turbo ($300) - the benefit of having a small engine is you can get a good turbo for it for bugger all...
All up cost me about $7000 (I was aiming for $5000 - oh well - in hindsight I could have knocked a grand off that) and I did all the work myself (except exhaust and other custom fabrication).
I haven't quite finished yet - it is in and running but it goes in for a dyno tune on Wednesday. That's the final thing so I can let you know how that goes as well.
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Astroboysoup
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well look like i'll be doing the 1.6 conversion for sure then.
a couple of questions...
1) so with the ECU situation, what are you using??? I full replacement ECU is considered illegal as it doesn't retain the original manufacturers specs in the ecu. so im assuming piggy back system like an e-manage or a link.
1a) Do i have to use the ecu from the familia or can i use the NA 1.6 ecu? plus the additional piggy back computer.
2) is the manifold pattern for the exhaust the same as the mx5 1.6??? (e.g the bolt in points on the engine block are positioned in the same spots.)
cos if it is the same then I can still use the one that I bought off NPower. I also have the dump pipe for it to fit a TD04.
3) to keep it legal, do i have to use the manufacturers original turbo...e.g VJ20 or can i use my TD04. if not then i guess i can chop of the flange of the turbo exhaust manifold and the dump pipe and attach ones that will fit the old VJ20. I don't think that will cost toooo much.
a couple of questions...
1) so with the ECU situation, what are you using??? I full replacement ECU is considered illegal as it doesn't retain the original manufacturers specs in the ecu. so im assuming piggy back system like an e-manage or a link.
1a) Do i have to use the ecu from the familia or can i use the NA 1.6 ecu? plus the additional piggy back computer.
2) is the manifold pattern for the exhaust the same as the mx5 1.6??? (e.g the bolt in points on the engine block are positioned in the same spots.)
cos if it is the same then I can still use the one that I bought off NPower. I also have the dump pipe for it to fit a TD04.
3) to keep it legal, do i have to use the manufacturers original turbo...e.g VJ20 or can i use my TD04. if not then i guess i can chop of the flange of the turbo exhaust manifold and the dump pipe and attach ones that will fit the old VJ20. I don't think that will cost toooo much.
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Moggy
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Well I'm not sure about the legalities exactly... 
As for the ecu, I'm using a full aftermarket computer - a Microtech LT-10s (I consider this computer to be perfectly adequate for the task - before anyone starts MT bashing ). The issue with a piggy-back ecu is the ignition. The BPT has a dizzy with only one ecu ignition input while the mx5 runs twin coils with two ecu ignition inputs. Now I am not sure if a piggy-back ecu could deal with the twin inputs from the mx5 coils and convert them to a single input for the BPT ecu. In the end, I think replacing the stock ecu is the best idea.
You may be able to use the NA computer if you get a 1.6 but you would still need a piggy-back to control fuel with the different requirements of the turbo engine. I didn't do this so I can't tell you exactly what to do or even if it is possible...
I am pretty sure if you got a GTX B6 the manifold patterns are the same as on the NA B6... I don't have one so I can't tell you for sure though.
Once again, I am not sure of the legalities but I would definitely be getting a turbo of T25-T28 size for the B6. I would sell the VJ20 and bolt up the turbo set-up you have if you can.
Sorry I couldn't be of more help but I used a BP not a B6 - in hindsight I would go the B6 though as it would have been much easier...
As for the ecu, I'm using a full aftermarket computer - a Microtech LT-10s (I consider this computer to be perfectly adequate for the task - before anyone starts MT bashing
). The issue with a piggy-back ecu is the ignition. The BPT has a dizzy with only one ecu ignition input while the mx5 runs twin coils with two ecu ignition inputs. Now I am not sure if a piggy-back ecu could deal with the twin inputs from the mx5 coils and convert them to a single input for the BPT ecu. In the end, I think replacing the stock ecu is the best idea.You may be able to use the NA computer if you get a 1.6 but you would still need a piggy-back to control fuel with the different requirements of the turbo engine. I didn't do this so I can't tell you exactly what to do or even if it is possible...
I am pretty sure if you got a GTX B6 the manifold patterns are the same as on the NA B6... I don't have one so I can't tell you for sure though.
Once again, I am not sure of the legalities but I would definitely be getting a turbo of T25-T28 size for the B6. I would sell the VJ20 and bolt up the turbo set-up you have if you can.
Sorry I couldn't be of more help but I used a BP not a B6 - in hindsight I would go the B6 though as it would have been much easier...
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