RTA , Engineering , conversion question

M

mmc77

Active Member
Just wondering if anyone had any advice on what hassle with the rta i might have doing a 1.8 swap into my mirage? For instance I'm thinking id have to get it engineered due the 15% capacity rule. I have no idea what an engineers inspection would cost but i imagine not cheap. The cost isn't really the drama but i was more thinking getting the rego done when due and then doing the swap and that give me 12 months to do any other mods eg seats, brakes and turbo maybe and save multiple trips down the track to an engineer for a sign off.
Also thinking if i have to go to all the hassle with an engineer then maybe a better conversion then the 4g93 is a better way to go even the main reason i want to do the 4g93 is because I'm interested in doing it my self and better engines require more skill then i possess .
This is all thinking out loud because i have really no idea with the rules and regs in this situation any advise would be appreciated . cheers.
 
Why dont you look for a 4G92 Mivec 1.6, bit more power compared to the 4G93
 
Rules are faily easy, just put the new engine in, go to a blue slip authorized mechanic tell him ur old motor blew up and u have replaced it and need to update the engine number, $50 take that to the rta and presto. This will work with a 4g92/3/4 etc...
 
bumpak said:
Rules are faily easy, just put the new engine in, go to a blue slip authorized mechanic tell him ur old motor blew up and u have replaced it and need to update the engine number, $50 take that to the rta and presto. This will work with a 4g92/3/4 etc...
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What about the increase in engine capacity being over the 15% rule won't that be an issue?
 
Because the 93 was available in the coupe in the same year, isn't it allowed without having to engineer it?
 
Jazza2442 said:
the 93 wasn't available in the mirage tho
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This is what I'm thinking even though the mirage and the coupe are the same spec eg brakes suspension etc obv the mirage was not issued in the 1.8 setup , are the mirage and coupe the same chassis ? They have to be nearly the same id imagine.
 
For a lancer coupe or sedan you do not require engineering. For a mirage you do, as has been said because they only came with a 1.5. Basically everything between a mirage and a lancer is 100% interchangeable, but unfortunately rta don't see it this way. As EVL20T said, if you can find a 4g92 mivec cut to use that will be the only engine you can use without requiring engineering and produce more power than a 1.5. Only thing is they can be very hard to find because they didn't come in any aus delivered cars.
 
Thanks the mivec seems like an excellent choice the power is up there for sure and after watching several YouTube clips of them reving there heads off they would definetly be something different . Ill have to do some research on there availability , cost, running costs and reliability. Does anyone know a ruff cost of engineers cert and if there's any other hoops you need to jump through with those guys. cheers.
 
If your going to need a engineering certificate for the swap you might aswell go with the ralliart colt engine, which has a turbo aswell which would be an added benefit seeing that it would be the same mounting as the other colt engine and such
 
"if you find a ralliart colt 4g15t" it should bolt straight in. But that motor mikey has linked to wont fit. They rake towards the fire wall and have a completely different engine mounting setup.

If you change the motor to a 4g9x, the guy doing the pink slip cant fail you on the engine change or capacity change. There is nowhere in the rule book to fail it on. But you can get defected for it, fined etc etc. If you had to go for a blue slip it wont pass due to the numbers not matching the car, wrong engine and wrong car. There is a loop hole that you could get through but you need to know the auvis rules and ADR's very well.

At the end of the day putting the 1.8 in the mirage is a great thing to do. If you get caught for it unlucky and is a very minor thing to get sorted out. I don't think you will have to do emissions as the engine is in a same model car, just a different model variant which meets ADR's.
 
Chaser said:
"if you find a ralliart colt 4g15t" it should bolt straight in. But that motor mikey has linked to wont fit. They rake towards the fire wall and have a completely different engine mounting setup.

If you change the motor to a 4g9x, the guy doing the pink slip cant fail you on the engine change or capacity change. There is nowhere in the rule book to fail it on. But you can get defected for it, fined etc etc. If you had to go for a blue slip it wont pass due to the numbers not matching the car, wrong engine and wrong car. There is a loop hole that you could get through but you need to know the auvis rules and ADR's very well.

At the end of the day putting the 1.8 in the mirage is a great thing to do. If you get caught for it unlucky and is a very minor thing to get sorted out. I don't think you will have to do emissions as the engine is in a same model car, just a different model variant which meets ADR's.
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Thanks for the great info, I've been reading all i can about the rules and regs, not to worried about the copper and i doubt the guy i get my pink slip done even lifts the bonnett tbh the only really concern is say for insurance and what would happen with green slip coverage if an accident or 3rd party not coughing up if something where to happen.
 
The only problem from what i can see with the mivec or ralliart half cuts is that they are near impossible to find and then they cost up there near some other halfcut turbo options which opens up a whole nother can of worms. Am i missing something in say they are rare as? Does any one have any idea as where to find these setups? Or is there is better way getting the parte i would need. On a side note i know they would not always be the most practical thing to drive and would prob do my head in driving home after a 12 hour ns and changing gears even seems like a chore at times but the sound of that mivec screaming its head off in the clips I've been watching is just awesome.
 
Sorry to do a little light thread mining, I've been thinking of my options too.
The awesomeness of stock 4G15 power is wearing thin, lol

So the 4G15 is 1468cc + 15% makes it 1688cc
Puts the 4G93 at 1834cc's just out of reach which is a bugger!

Only leaves the legally obtainable options open to A: DOHC conversion, B: Turbo and C: Options A & B = WIN
But option B would still require an engineers cert anyway to keep the friendly officers happy.
 
ARC said:
Sorry to do a little light thread mining, I've been thinking of my options too.
The awesomeness of stock 4G15 power is wearing thin, lol

So the 4G15 is 1468cc + 15% makes it 1688cc
Puts the 4G93 at 1834cc's just out of reach which is a bugger!

Only leaves the legally obtainable options open to A: DOHC conversion, B: Turbo and C: Options A & B = WIN
But option B would still require an engineers cert anyway to keep the friendly officers happy.
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Pretty much the only option is just get it engineered and be done with it. I have made heaps of enquiries about a 4g92 mivec and the response i basically keep getting is there is pretty much no chance and there dead in the water, tbh aim sure you could push the point or use other channels but the cost would probably be ridiculous and for what really to save a engineering bill .
I'm currently getting organised to stick a 93 in a mirage after sort of giving up on the idea for awhile because i really like the hatch but the 1.5 is just a deal breaker I've tried twice and can't live with it so considering the conversion cost is next to *fudge* all ill be happy to live with the cert cost.
Also Arc i figure if you get a whole car from say pickles do the swap then sell your old setup and left over parts etc it wouldn't be to hard to come out with a pretty much free conversion or there abouts .
 
It's a pity you can't get a stroker kit or something and boost it internally without changing the block.
For all anyone else would think, still a 1.5 inside, like my old Ford, went from a 302 to a 390. Still rego'd as a 302 :cool:

I guess porting and polishing would still be an option too, upgraded cam..?
But I'm not really familiar with these, so I couldn't really say what's doable with these.
 
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