ca18det is the bigest

n.s.w is ilegal to put
sr20det

maybee 5 10 years ago u could but not no more.

I rang up the motor registry in the ACT a few weeks ago to stop to finally get a definate answer to these questions with all guesses and second hand info people were givin me about weights and things so here is what i got told...

Tare weight of a 1984 1200 ute = 720 kg

any vehicle weighting less than 800kg

biggest naturally apsirated engine:

Tare weight x 3.0 = engine size

so 720 x 3 = 2160

Biggest turbo/supercharged engine:

Tare weight x 2.5 = engine size

so 720 x 2.5 = 1800

So you are really limited now to NA SR20's or hypo 4AG variations or CA18DET's and 4AGZE's.

I'm not saying this is gospel across the board in Aus but in the ACT the rules are now the same as in NSW.

Hope this helps

spot on..

this turned out great

it might stop alot of idiots on ebay trying to sell cars that u cant get rego for...