63 replies to this topic

[SamBam]

I got another email back the engineers at cartech if anyone is familiar with them...
seems pretty informed and willing to sort out what csn be done. He asked for original tare mass including 10l fuel, so would that have to be my model an sl or can i say the heaviest of 1306?

[SamBam]

Well good news!! I spoke to archie robertson and he said yes you can put a 400 in an lx, gotta have all the emissions stuff and everything to accommodate the engine so brakes chassis strengthening etc. So if he yes then I'll stick with it

[Bigfella237]

Good news indeed Sammy,

 

That's the first hurdle, now you have to get pre-approval from VicRoads (or at least that's how it works up here).

 

Also worth noting, if you have to do chassis strengthening work, you'd better check with the engineer to see if the car has to have Beaming and Torsion tests before any modifications (so they have data to compare with the after-tests)?

 

There's nothing too technical about these tests, it's just measuring certain points without and then with simulated people-weight in all the seats to determine how much flex the body has.

 

See NCOP12 for details: http://www.infrastru...1Jan2011_v3.pdf

[SamBam]

I'll give vic roads a call and see if i do need a pre approval or anyone here in vic that would know?
I mentioned to him about the chassis strengthening kit and he said yes definitely. But before i put it on (havent even got it yet) when im ready to get him involved I'll have a chat and see what he will require.
At the moment im still blocking and priming the car any chance i get and slowly doing the engine at same when $$ is made. Now that i know that the 400 is ok to go in i can just concentrate on the body work. But I'll be updating the progress on the build section
And also finding out as much info people can offer about the build n legalities

[SamBam]

Vic roads said get the engineers cert bring it in fill the form in then they look at the engine to check it n thats it. Thats it meaning will be bit of work but part of the adventure!

[Bigfella237]

That almost sounds too easy!

 

I just re-read your posts above and I missed that you're looking at a chassis "kit" (where I assumed you'd be doing your own strengthening). In that case you may not have to do all the Beaming and Torsion tests at all if the supplier provides their own certificate with the kit? But it would still be worthwhile confirming that with your engineer when the time comes.

 

Anyhow, sounds like you'll have your hands full with the bodywork for a while yet, are you gonna do a build thread here?

 

I'd love to see some photos!

[SamBam]

I'll take some pics tomorrow after work and set up a build page so you can see the progress so far! Im not sure if the chassis kit comes with a certificate but can always ask if they can write one up if i need it.

[TempesT]

From: http://www.gmh-toran...7862-a9x-specs/

 

LH L34 Sedan:
Kerb Weight: 1306 kg

 

LX A9X Sedan:
Kerb Weight: 1306kg

 

LX A9X Hatchback:
Kerb Weight: 1242kg

 

So it seems under NCOP we have a maximum allowable engine capacity for a Torana Sedan of 6530cc (398.485ci)

 

And for Hatch a maximum capacity of 6210cc (378.957ci)

 

You're getting closer Sammy, I figure a 400ci Chev is a bee's dick under 6555cc so now you're only 25cc away (assuming a sedan), that's less than half a percent over the limit.

 

It may be worth confirming whether the 400ci figure is exact or a marketing term and then going back to your engineer with the correct values?

 

377 was the combo (build off the 400 block) i was recommended to be able to engineer is here in nsw without it becoming a huge headfcuk 

 

Also you assuming your 400 is standard bore...

 

its a line in the sand your either on one side of it or on it..... most engineers will take that opinion 

[TempesT]

 now you have to get pre-approval from VicRoads (or at least that's how it works up here).

 

Whats that about isnt the process just get it certified under the vsccs and then rock on over to rms for rego?

Edited by TempesT, 19 January 2015 - 09:30 PM.

[Bigfella237]

I could swear I've read that somewhere and I thought I read it on the NSWRMS website, but I've just spent the last hour and a half searching and I can't find it now, I thought I saw a form you had to fill out?

 

I'll keep looking...

[EunUCh]

This might sound a bit stupid and understand that cubes=power, but there are  ways of making more cubes from small engines 

without increasing the physical cubic capacity of the engine within the borderline confines of what is allowable with bolt on stuff...

[wot179]

So you want more cubes with the same capacity?

[EunUCh]

Easy done,pulley driven air pump on valley,same CID engine but air pump does the rest.

not sure of the numbers but most air pumps are about 1/2 CID driven at 2:1?,no change in physical capacity but volume wise it changes things a bit?

did hear once that it was about 80% power or volume,not sure?

[wot179]

Blower.

[wot179]

Better not start calling them rotary carburettors....

[CYCO355]

Super/turbo charged weight x3 = less ci.

[Bigfella237]

I just did this calculation in another thread, if the engine has forced induction then the capacity limit for a LH/LX sedan is a miserly 3918cc

 

 

BTW, how's the paragraph on N₂O...

 

 NCOP3_Section_LA - Nitrous Oxide.JPG   40.1K   2 downloads

 

No ambiguity there!

[EunUCh]

So if the 3918 is blown would this mean that at an 80% pump efficiency we end up with a 382 or roughly 6.3 L?,50% increase or thereabouts.

The numbers seem pretty close no matter what?

At a 90% pump efficiency the numbers look better?