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Location:
Sydney
Registered:
May 2002
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20v need to be engineered?
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Fri, 21 November 2003 02:28
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Hey fellas,
Got a bit of a question out of curiosity..
Say you replace a 4A-C/4AGE with a 20-Valve.. do you need to get a eng. Cert? Same capacity etc.. so i would think its just a RTA Number change?
is this correcT?
Thanks,
Lyle
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Location:
Sydney
Registered:
February 2003
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Re: 20v need to be engineered?
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Fri, 21 November 2003 02:34
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but its a significant increase in power..requiring cert.
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Location:
Brisbane
Registered:
May 2002
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Re: 20v need to be engineered?
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Fri, 21 November 2003 02:48
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the engine was not originally available in the car, so yes..
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Location:
Adelaide
Registered:
May 2002
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Re: 20v need to be engineered?
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Fri, 21 November 2003 03:31
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not necessarily, depending on the state.
I put a 5MGE into my MX62 Cressida (had the 5ME), same capacity, just a twin cam and a lot more power. I rang the RTA and they said its just an engine number change. No big deal. I'm in SA however.
I guess ring and find out?
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Location:
Terrigal
Registered:
May 2002
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Re: 20v need to be engineered?
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Fri, 21 November 2003 03:54
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I put a 4age 16v in AE86 aus spec sprinter which came with 4AC. Was just a engine change certificate.
I talked to engineer and he and the RTA said no way just a blue slip for engine number change.
Even NRMA will insure the car 
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: 20v need to be engineered?
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Fri, 21 November 2003 04:20
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in NSW (i assume you are), the "code of practice for light vehicle modification" says that it is owner certified (so just eng number change) IF:
-replacement motor is less than 15% increase in capacity over the largest optional engine for your car
AND
- replacement motor is less than 15% in engine power.
from the COPfLVM.
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engine conversions can also be treated as owner certified if the engine or modification is an original manufacturers option for the vehicle however, any other components (such as brakes, transmissions, suspension, exhaust etc) which were packaged by the manufacturer as part of the original specification for the replacement engine MUST also be fitted
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most 4AC cars in Aus never had the option of 4AG, so it must be cert'd. NO cars in Aus had the 20V as an option, so it MUST be cert'd.
check with a reputable engineer first. save a headache later.
as far as insurance goes, Shannons will insure pretty much any car as long as it is engineered properly, and garaged.
Cya, Stewart
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Location:
Terrigal
Registered:
May 2002
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Re: 20v need to be engineered?
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Fri, 21 November 2003 04:35
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All I can say after speaking to RTA (not website but by phone) and Engineer that the 16v conversion is allowed in the AE86. A cat and unleaded neck had to be fitted that was all.
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Location:
NSW, East Coast
Registered:
July 2003
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Re: 20v need to be engineered?
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Wed, 26 November 2003 12:43
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Im in the same vote as turbora28, no cert needed, the motor is similar capacity and both are 4a engines
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: 20v need to be engineered?
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Fri, 28 November 2003 08:21
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engine conversions can also be treated as owner certified if the engine or modification is an original manufacturers option for the vehicle however, any other components (such as brakes, transmissions, suspension, exhaust etc) which were packaged by the manufacturer as part of the original specification for the replacement engine MUST also be fitted
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I don't believe that the words "original manufacturer's option for the vehivle" are specifically limited to Australian manufacture only. In fact im sure this is NOT the case.
For instance, putting an 18R-GU into my RA28 is owner certifiable becuase the engine was a factory option in my model car from the manufacturer. All i have to do is keep the EGR and other pollution gear, and the rest was the same.
THUS!!
# Putting a 20V into an AE92 DOES REQUIRE ENGINEERING, because the 4A-GE 20V was NOT available in the AE92 from factory. This would not be the case if the car were an AE101 however!
# Putting a 4A-GE into an AE86 does not require engineering, because in japan the AE86 was available from factory with a 4a-ge. BUT - you must replace the brakes, diff, and associated pollution gear... which does not include a catalytic converter (as has been confirmed by the RTA emissions testing centre in Penrith). I also do not think an unleaded neck is required, but i dont really know... maybe if the AE86 with 4age in Japan has an unleaded neck?
Im open to dispute of course though
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