Engine upsizing question

[F5 Dave]

okies. If its just 400 bux then maybe I should just do it.

Well maybe I'm overthinking it. This is why I'd start with a bike with current rego and wof. God help anyone who hacked something up from scratch and took it to be VINned.

Steve

erm I've done the last bit (see my thread on my 500). Yeah it wasn't too painful. the LVV certifier chap was sensible though so that eased things. He charged ~$400 as it happens. Then you get a huge plate that you need to site somewhere (seatbase is as good as any).

(Car based) rules are if the engine puts out 15% (from memory) more power it needs a LVV cert. All from LT website. Means you can put that 1600 in your old 1500 ford or whatever, but don't try slinging a twin turbo V8 in there without someone having a gander at it to see it isn't a total deathtrap. Fairly sensible idea I guess.

[tigertim20]

if i am remembering correctly, there is a section that states about modifying. if you can use the original mounting points, and factory brackets to mount it, it doesnt need a cert. as soon as you need to drill a single hole or make a new bracket, hello certification.
dont quote me on it though

[riffer]

FZR400 will take the 600 motor as a bolt-in replacement. This makes a nice little bike.

[imdying]

if i am remembering correctly, there is a section that states about modifying. if you can use the original mounting points, and factory brackets to mount it, it doesnt need a cert. as soon as you need to drill a single hole or make a new bracket, hello certification.

No, you're incorrect.

FZR400 will take the 600 motor as a bolt-in replacement. This makes a nice little bike.

A nice little bike which requires certification in New Zealand.

[riffer]

No, you're incorrect.

A nice little bike which requires certification in New Zealand.

Never said it didn't. However, it will be a safe bike. Kinda like a smaller 7/11 gixxer really.

[F5 Dave]

. . . All from LT website. . . .

Tiger, you are happy to offer all sorts of opinions but have you actually read the rules? It's all there, have a look before spouting what your mate at the pub said.

Here's a good start for those too lazy to google LTSA

http://www.ltsa.govt.nz/vehicles/mod...ion/index.html

yes it's car based but bikes are covered too.

[ScreaminGherkin]

I do love how the certification threshold shedule lists Engine and Drivetrain under Miscellaneous Items.
Substitution of engines says it must be of equal power to what's being replaced or it needs a cert.
Modifications on the other hand let you go to 20% greater power.

[awa355]

Two things here, If modifications to the engine require certification? where do we stand with after market exhausts.

Also you can bet your bottam dollar, if these proposed rego fees come in, some germ in ACC will be looking out for this sort of thing.

[imdying]

The only thing you'll fit to an exhaust to make 20% more power is a turbo, they're fine.

[F5 Dave]

Again Awa did you read the sheet? It is pretty clear on exhausts & imdying is on the nail again.

[jono035]

If you're going to go for something that requires a low volume cert then it is definitely worth thinking about what else you might want to do at the same time and then have a chat with a few people about which low volume certifiers are reasonable, then have a chat with them about how they normally prefer to do things (what they want to see, when they want to see it etc.). That was the advice given to a friend who is doing some pretty heavy mods to an old car.