27 replies to this topic

[WA1TNC]

Gday guys,
having trouble finding out exactly how big is too big(if there is such a thing ) when fitting an aspirated engine into a HX ute & getting it rego'd & engineered in VIC?

My 253 shit itself in my HX ute last Friday & my LS1 torana isnt going anywhere for along time so was thinking I would just throw it all in the ute 4 now since it will bolt straight in, bar a few little niggly things like fuel system & a few other mods.
The only thing is its got a Harrop blower sitting on top & I can't be bothered pulling it all of & fitting the std manifold back on.

So anybody out there know if it's ok to throw it in without reverting back to std?

Cheers, Nig.

[yel327]

Have a look at the National COP if that is what Victoria now use. Page 11-12:

http://www.infrastru...1jan2011_v3.pdf


The wording is a bit misleading when it talks about weights, as it says to base the maximum engine on the tare mass of the heaviest sedan with the biggest engine for the model. In a HX the model is the car itself eg Kingswood ute, Belmont wagon, Premier sedan, Holden van etc. I think they really mean series ie HX series. Which would mean you use the HX Caprice as the heaviest sedan with the biggest engine. One of these has a Tare of 1642kg. So for normally aspirated this would give you 5.0 x 1642kg = 8.210L (around 500ci). Blown is 3.0 x 1642kg = 4.926L (around 302ci). Note that these are the biggest possible, but not necessarily guaranteed to be passed.

[wot179]

Grab one of these http://www.sonnysrac...hp-new-for-2012 ,paint it rocket red and pop a 253 number on it somewhere.

No one will notice....

[WA1TNC]

Have a look at the National COP if that is what Victoria now use. Page 11-12:

http://www.infrastru...1jan2011_v3.pdf
I Which would mean you use the HX Caprice as the heaviest sedan with the biggest engine. One of these has a Tare of 1642kg. So for normally aspirated this would give you 5.0 x 1642kg = 8.210L (around 500ci). Blown is 3.0 x 1642kg = 4.926L (around 302ci). Note that these are the biggest possible, but not necessarily guaranteed to be passed.

These rules seem so dumb to me.... You can have up to a 500 odd cube engine pushing out bucket loads of torque & power without even breaking a sweat as long as its n/a..... but as soon as its boosted it drops down to a 253/308 cube engine that would make 500 hp max & be that off its head you wouldnt be able 2 drive it anywhere. I just don't see the sence.

You would think it would make way more sence to just go with a power to weight ratio like Victoria's old P plate laws. That way if you got pulled over & "the man" thought the engine is way over powered for the vehicle, you could at least have fun watching you car on the dyno!!!
....and every time you spend $$$ on your car & your miss's asks why your at the tuners again you can say its because you "got done" again & it's the law haha.

[TerrA LX]

^ No warranty cover????

[yel327]

I'd be happy with one of these!

http://www.summitrac...s/NAL-19166393/

[yel327]

It'd be heavier than one of the repro ZL-1 427 engines though!

[WA1TNC]

I was just throwing random numbers out bomber, they wer'nt meant 2 be taken as gospel mate.

All I meant was it doesn't make sence 2 me.... As in you can have your 202ci aspirated monster & have it producing 1000hp or have a 350ci aspirated producing 400hp but the 350ci is the one that's the illegal combo.... even though the 202ci is way,....WAY over powered compared to the 350ci.
I don't see the sence.

As for you saying its the stupidest comment you've ever heard that hurts my feelings bomber ;(
Surley there's been other posts more worthy of that title than that.

[Dr Terry]

Guys.

The use of the word "aspirated" is being used incorrectly here. Aspirated simply means to breathe or inhale. All internal combustion motors, blown or otherwise are aspirated.

What you guys mean is NATURALLY aspirated, because they are only breathing due the pressure of the atmosphere (= 1 bar).

Supercharged or turbocharged motors have forced induction, so they breathe more due to the higher pressure being applied.

Dr Terry

[yel327]

i thought i read on the VSCCS that there wasnt a engine size limit on commercials.

I don't think that applies to commercials built on a sedan platform like Holden utes. I think they are referring to vehicles like Hilux, F250 etc. Would be worth checking first though.

[myss427]

500hp out of a 500 cube big block is a walk in the park (1hp per cube) would idle like a baby and have good manners with the right carby, but its biggest drawback would be the weight. Yes you can go alloy big block but look at the cost, cheapest combo is well over $20,000. 308 on boost is never going to be cheap after you factor all the plumbing ect and you need to deal with the extra heat of turbo's. Best is to just go biggest small block you can get with AFR's and roller cam and you'll never look back, keep it simple, lots of guys out there getting over 700hp with 400 small block with the right combo.

[WA1TNC]

Umm..... No mate, I'm not saying a 500hp boosted 308ci engine will be "too" off it's head........

...... What I was saying was a 1000hp boosted 308ci is legal & a 300hp boosted 350ci is illegal.

THAT is what I don't understand.

[orangeLJ]

was it CAPA or COME that were doing the big Ci holden blocks?

[orangeLJ]

http://www.comeracin...ines/comealloy/