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Where Is The Rb20 Engine Number

2bevil

By 2bevil,
in R Series (R30, R31, R32, R33, R34)

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2bevil Enthusiast

2bevil

Posted
Posted

hi all i think i have a big problem on my hands, i own a nissan silvia with a rb20 motor now i got the car with the motor and it had rego. now the rego is close to been up and i went over all the car to make shore its all ok. i didn ot think much of it when i got the car as it all lind up the number and all but now when i had a chance to think abit a found that the rego sticker says that the engine number is ca18%$#@ now i am not shore but i think the number should start with rb20 or so if its regoed with this number

now i did find a number next to the gear box and it also says ca18%$#@ is that where the rb20 engine number is and if so should it start with rb20 or ca18

i think the number has been changed and if so what can i do make it right

plz help

pm if you have any idea thanx

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https://www.sau.com.au/forums/topic/105398-where-is-the-rb20-engine-number/
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SteveL Mentor

SteveL

Posted
Posted (edited)

RB20 motor should have the engine number stamped on the engine just in front of the gearbox on the passenger side, and yes it should start with 'RB20'. If you have a number starting with 'CA18' on the engine then it sounds like someone has ground off the RB20 engine number and replaced it with the number of the original engine (ie the CA18 engine number). Sounds like a dodgy way to get around engineering/rego requirementts.....and most definately illegal.

Post up some photos of your engine and the engine number on it, if you can.

Edited by SteveL
SteveL Mentor

SteveL

Posted
Posted (edited)

This is most definately a dodgy attempt to get around engineering/rego requirements, and as I said, totally illegal. What you do about it is entirely up to you, but the question is: do you have engineering certification for the conversion ?? (I suspect not). Also, do you have details of who did the conversion, etc.

Strictly speaking you should report this to your rego authorities, who will undoubtedly want to investigate the matter.....the engine could be stolen, for example. As I said, its up to you, but remember that your rego and insurance is invalid under these circumstances.

Edit: there are ways to determine the original engine number. Without getting too technical, the process of stamping the engine number into the block leaves 'damage' to the block material beyond what you can see with the naked eye. Using a 'black' light can sometimes reveal the original engine number info.

Edited by SteveL
Wazz Community Regular

Wazz

Posted
Posted (edited)

check under the thermostat housing.. im sure there is also a engine number there i'll check tomorow arvo on my old rb20 and let you know

at least i think thats were it is.. i'll take a camera and get photos of were it is..

Edited by Wazz

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