legality of L28 in Victoria

[vlad]

Hi guys,

i did a search, but didnt come up with anything.

my question is, how legal is a L28 in a 240Z? do i need an engineer's cert for this conversion or not?

the car that im looking at buying has a L28 in it, but given that its from WA where they have no RWC to worry about, its all good and legal. but once i bring it to Melbourne i will need to get an RWC. am i going to have problems getting the thing certified?

cheers, Vlad

[lambs]

my question is' date=' how legal is a L28 in a 240Z? do i need an engineer's cert for this conversion or not?

[/quote']

 

Strictly speaking you do require an engineers certificate.......however I wouldn't get too concerned.

 

In Vic the requirement is that if you fit an engine that wasn't originally fitted by the manufacturer for that model or offered as an option, then an engineers certificate is required. Since the 240Z was never offered with an L28, the conversion falls under that requirment (technically speaking, fitting an L26 to a 240Z falls into the same category). Someone will probably jump in and say that the L28 came in the 280Z, but that was only in the USA and would be regarded as a totally different model....plus the 280Z was never sold here.

 

But as I said, I wouldn't worry about it too much, it's unlikely anyone at Vicroads would notice the difference, which is only the engine number (externally, anyway). I'd say the vast majority of 240Z's on Victorian roads are fitted with an L28.......

[vlad]

thanks, Lambs,

i was getting a bit worried there for a second

cheers, Vlad

[Azman]

Vlad dont stress dude, you shouldnt have any issues at all, I know i haven't in either of my 260's or a friends 240, they came out and checked the engine number then let it go.

[PZG302]

Actually, the 240Z was offered with an L28.

 

Sorry to be pedantic, but if you have a set of homologation papers for the 240Z for racing the L28 engine was homologated for racing in all body shells from the the 240 up, The first chassis number that an L28 can be fitted to is HS30 00001.

 

If needed I can post bits and pieces of the papers up. Don't know how Transport departments will view this though. Same as the maximum width of wheels for a Z is 10", as per the racing homologation papers.

 

Matt

[lambs]

Actually' date=' the 240Z was offered with an L28.

[/quote']

 

It was never 'offered' for the purpose of sale at the showroom for general public purchase. IOW, there is no ADR compliance certification for the 240Z fitted with an L28 and that is the important issue with respect to the original question. Whatever might have happened for racing homologation purposes is entirely irrelivent to that question. Same goes for wheels.

[thehelix112]

I seem to remember there being something in the Vic rules about 15% increase in displacement.

 

L24 = 2393cc

L28 = 2753cc

 

L24 * 1.15 = 2752cc.

 

Wouldn't that shit ya?

 

Dave

[luke_mcmahon85]

you'll be fine, as long as it's registered in WA, i bought my 260 in tassie, and while it came with an engineers certificate, i didn't need it at all, either for road worthy, or for registration inspection

[vlad]

thanks guys!

we'll see how i go when i get the car.

Dave, you are right, that would shit anyone if that was the case!!!

cheers, Vlad

[PZG302]

I seem to remember there being something in the Vic rules about 15% increase in displacement.

 

L24 = 2393cc

L28 = 2753cc

 

L24 * 1.15 = 2752cc.

 

Wouldn't that shit ya?

 

Dave

 

From the homologation papers, the size of a stock L28 engine is

 

Bore 86.0mm

Stroke 79.0mm

Capacity per cylinder 458.83cm3

Total cylinder capacity 2753cm3

 

For a stock L24 the figures are:

Bore 83.0mm

Stroke 73.7mm

Total capacity per cylinder 399cm3

Total Cylinder capacity 2394cm3

 

So for a L24 a 15% increase in capacity would be 1.15x2394 = 2753.1cm3

Allowing the L28 to squeak in on the limit. Just don't let them know it's a stroker out to 3100 :lol:

 

Again if my experiences in NSW are like those in Vic, a L28 into a 240 shouldn't be problem. The only thing I was asked was about emissions, as the motor had to meet the requirements of the year of manufacture for the motor, not the vehicle. When they saw the injection sitting on it no worries there either.

[lambs]

In Vic, the old 'rule-of-thumb' for engine conversions was a 10% increase was allowable. That was to give plenty of allowance for extreme cases of large engines being over-bored, re-sleeved, whatever. Since the VASS scheme came into effect, such arbitrary rules no longer apply, but since some of you guys obviously have trouble accepting the facts, I suggest you go here:

 

http://www.vicroads.vic.gov.au/vrne/vrne5nav.nsf/childdocs/-D6B2343989C152A5CA256FD300241C34-EEC8092FE0E5478FCA256FD300241C39?open

 

...and read VSI bulletin #8, section 11 for yourselves, noting particularly the wording about optional engines. I'll repeat that the L28 was _never_ a show-room-floor option for the 240Z for the general public and so is not regarded an 'optional' engine for the purpose of engine conversions under Vicroads rules (I have no idea about other states and could hardly care less). BUT I'll also repeat that for the purpose of the OP's question I wouldn't worry about it.

[Bruce]

gday Vlad,

has your car arrived as yet?

I am interested to see how you go registering your car with the L28. (as noted in the above posts)

I am about to do the same conversion.

keep us up to date (and post some pics of your new purchase)

cheers

Bruce

[vlad]

definitely will post pics once i get the car.its on the train right now, will get it next wednesday hopefully.

will let you know about the engine.

cheers, Vlad

[road rider]

Good luck next wednesday Vlad Let us know the results.

 

Ironic that I was thinking of the possible legalities of trying to reg a 240z with L28 fitted myself today :roll:

 

Spent some time in the garage this afternoon looking over my 240, which has been sitting idle now for 10 years! (owned it for about 20 years) It is definately time to get it back on the road!

[VertexZ]

i think the Vic Roads word is that if its similar in weight, power and design, its ok. of course its not stated what similar is

 

I had no problems with an injected L28 in my 260Z. The only way anyone (excluding nissan experts) could tell is by the engine number...

 

Also, perhaps the gross hp to net hp changeover could help, depending if Vic Roads are on to it. The 260Z L26 is rated 162hp (its on the build plate), whereas the injected L28 is rated at 103kw (137hp)