Has anyone successfully had a carby converted ej22 registered and engineered legally? I really want to go idf's and megajolt, but as I understand it, efi motors can not legally revert to carby?

Don't think you'd get away with it..

A couple of vids from the US

http://www.youtube.com/watch?v=LyW71RGKcpA

http://www.youtube.com/watch?v=AU7M1Qq1jZw

is it going into a old vw???

No, pretty sure you have to stick to the emission controls of the year of the engine,

Think the only way around would be in Victoria and it would have to run on LPG as a result

Our EJ22 was emissiones tested when fitted to our bus and it had to comply with engine year for the engineering certificate.

Best to ask your Local roads and transport.

In Victoria the emissions are on the car or engine year, whichever is the newer. I am involved in engineers VASS certificates at work at least once a month, so that is current in Victoria up to 1 week ago when the engineer came in last Thursday. I cannot comment on other states.

Alot of bay window Kombis that came out with EFI are now running around with twin carbs.

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It is based on the year of that engine number. Not the series of engine if it used over several years. For example a 1975 Holden 6 fitted with a 1977 Holden 6 engine would require a pollution cannister. The only leniancy is if the engineer has no way of proving the engine year.

As another example the EH Limo has a 1964 EH Holden 179 engine block (lump of cast iron) but has 1985 VK Commy crank, rods, heads manifolds and EFI. No emissions test or pollution equipment required for VASS.

So if in your example where a series of engine has been available through two different emissions level, then if the Engineer is happy to sign it off then that is ok. However it is a bit hard to get a Subaru EJ series engine proved as only needing carbies. Like I said the engineers I deal with know a fair bit of info, and if not they will research it. LS1 or GenIII GM engines are only in late Holdens, so again they know thay must have emission controlled EFI.

There is a lot of old Holden guys putting pre 1972 308ci engine blocks in their cars and fitting late 5 litre heads and EFI. This way they don't have the emissions test, but they have the advantage of EFI.

I have the opposite, all older parts but the block only is newer as the older blocks are often stuffed from lack of maintenance.

the only difference in my case is MAF and EGR but i want to use MAP and no ERG which the EFI and emission control gear is based of the earlier models of the same engine which did not have EGR but MAF still was there. The canister is still the same.

the other thing is what about working the engine and aftermarket ECU? how can that be presented to an engineer? otherwise it would be double handling of the engine for rego purposes.

btw its all the same engine, size and configuration and virtually the same power just series changed.

is there anyway around this? because i do not want to waste this block I have because its a real gem in terms of maintenance and wear levels almost unseen and actually incredible considering the history and mileage.

Aftermarket ECU is fine if it will present emissions as required.

Motec 880 can do current ECU for GM Gen 4 and pass emisions. It can be reprogrammed to do track race higher performance also.

ok so I can use the newer block and my aftermarket ECU but without EGR or MAF as seen on the older setup of the same engine series?

And working the engine should be fine?

With the ECU I have, I can change everything on the fly so dialing in for emission control isn't an issue I have already setup canister purge solenoid as per the newer engine. Not sure on EGR though, its has benefits but has some real disadvantages in in terms of engine health. They really make a mess inside the engine. That is why I have removed it and in place used the EGR port as the new MAP port.

with using the EFI and ECU that belongs to the new engine is a real pita and I found it impossible to work around the issue of A/C and manual transmission, VSS, BCMs and alike so hence the aftermarket ECU.

so if I needed emission testing , does that involve big costs? I heard 3k from an engineer.

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Best to ask your local Roads and Transport , before doing anything.

Edit. nevermind just saw your other thread,


They look super clean with carbs and it really simplifies the electrical install but getting away from carbs with the stock fuel injection system is one of the best aspects of the conversion.

One of the guys that used to contact me about conversions from the states went to all the effort of fitting IDFs and megajolt on his EJ22 bug only to rip it all off and put stock EFI back on because the drivability and fuel economy was so much better.