When converting a gearbox...

[Zyros]

Do you need a cert??

Cheers.

[bluemaumau]

if you change the mounts i think.

why what are you doing, it may help you get a 100% answer

[RS13]

Yes, yes you do. Even if its' a complete bolt-up, you DO need cert. I almost went through the whole cert process with my Cef, but ended up selling it.

It would pay to do all the mods you want first, before you cert it. Otherwise, it'll be $350 for gearbox now, and another $350 for coilovers in 2 months time, or just $350 for box and coilovers all at once..

Are you talking about the Skyline? Sick of the slushie already huh!? Converting a non-turbo isn't the wisest thing to do, but hey, if thats' what you've got your heart set on..

[celica_tommo]

bullshit...

have a read:

http://www.landtransport.govt.nz/public ... s-v2-2.pdf

LVV certification is not required provided that:

�� the OE gearbox cross-member has not been heated, cut or welded, and
�� the OE gearbox cross-member mounting to the OE body or chassis members is
unchanged, and
�� no replacement gearbox cross-member is used, and
�� the OE drive-shaft(s) is un-modified, and
�� no substantial modifications have occurred to the floor or gearbox tunnel area, other
than provision for gear-shift mechanism.

[RS13]

bullshit...

have a read:

Converting any foot-brake nissan to 5spd requires modification to the driveshaft tunnel, for the handbrake cable.

􀁸 no substantial modifications have occurred to the floor or gearbox tunnel area, other
than provision for gear-shift mechanism.

Which falls under the above, requiring certification. Further to this,

Back when I was looking at converting my GTSt, even with the handbrake setup factory, the gearbox crossmember mounting points are different between the 5spd and the auto (on A31, C33, R32 and S13s), however the crossmembers are the same, so getting the crossmember to properly attach to the chassis requires an adaptor plate, which also requires certification.

Further to this, I know others who've taken converted cars to VTNZ, only to be picked up on modified dashes, or the irregularities between the gearbox code on the chassis plate, and the gearbox installed.

Besides, if you crash, and the insurance assessor inspects the car and finds that it isn't certified for the change to the factory setup, then chances are they wouldn't pay out.

So really, at the end of the day, get cert. You'd be an idiot not to.

[celica_tommo]

RWD/4WD Nissans I have no knowledge of but making a big assumption here that Zyros is talking about a FWD Toyota I would be 99% sure that you could stay within those constraints when doing your conversion

[matt dunn]

RWD/4WD Nissans I have no knowledge of but making a big assumption here that Zyros is talking about a FWD Toyota I would be 99% sure that you could stay within those constraints when doing your conversion

um, yeah.

Cant help without knowing the car.

Converting a gearbox????

[Mr Revhead]

have come across needing a cert when doing a manual conversion

ae101 levin.....

i reckoned it was b/s but the wof inspecter insisted

[Zyros]

RWD/4WD Nissans I have no knowledge of but making a big assumption here that Zyros is talking about a FWD Toyota I would be 99% sure that you could stay within those constraints when doing your conversion

um, yeah.

Cant help without knowing the car.

Converting a gearbox????

The title was meant to read converting to manual.

And yea, it is the skyline, i cant stand automatics
RS13, did the crossmembers fit when you done it?

Yeah, i have a mate who can give me some old parts (R33 turbo stuff) which im going to throw into the R33.. seems worth it seen i got the car dirt cheap and its excellent condition!
Have to run low boost though, dont think an R33 pistons are going to handle much more than 5psi..

[RS13]

RWD/4WD Nissans I have no knowledge of but making a big assumption here that Zyros is talking about a FWD Toyota I would be 99% sure that you could stay within those constraints when doing your conversion

You only had to read back a couple of his posts to realise that he had an R33.

And yea, it is the skyline, i cant stand automatics
RS13, did the crossmembers fit when you done it?

Nope. As I said, the chassis tunnel mounting points are what differ between the manual and auto Skylines. I just drilled a pair of holes in the crossmember, so I could get it back on the road. Worked fine, but wouldn't pass a wof like that, without an adaptor plate.

You can see that the crossmember is a fair way out, and the holes I drilled to "rangi" it up to fit.



Also, these are manual and auto crossmembers side by side. No difference.

Yeah, i have a mate who can give me some old parts (R33 turbo stuff) which im going to throw into the R33.. seems worth it seen i got the car dirt cheap and its excellent condition!
Have to run low boost though, dont think an R33 pistons are going to handle much more than 5psi..

You'd be surprised. Although, could you afford the running/repair costs? If your RB25 threw a rod, or ran a bigend, what would you do? Would you still think throwing a turbo on, and running an awful tune was such a good idea?

Yes, you can turbo an RB25DE, you can even run up to 10psi (which would give you similar performance to a slightly boosted RB25DET, as the extra compression would give you more power from the start), but you'd need to get a link or similar to tune it, if you want it reliable. It WILL be much, much cheaper in the long run, just going and buying an RB25DET now, and throwing that in.

As I've said in previous posts, I've had quite a few Nissans, turbo and non-turbo, and when considering turbo'ing my $2500 GTS with turbo gear ($300-$1000 for turbo, manifolds and exhaust), once you get the GTSt brakes (for $500), LSD ($250), loom ($100), ECU ($150), then gearbox ($600), bigger flywheel and clutch ($600), cert ($400), then you'll still only have a Skyline with decent brakes, but an unreliable motor..

So I just went and got a GTSt for $4500. The difference is huge! I couldn't believe I even considered wasting money on turbo'ing the other one. I'm not trying to talk you out of it, but just realise that it may seem cheap and easy now, but in a few months time you'll have empty pockets, and more than likely a broken car..

[bluemaumau]

gez dude against all the advice ppl gave you not to buy a auto nonturbs liner, you did and now throwing money at it

[KinLoud]

Dumb Comment maybe, but...
It looks like you might be able to turn the crossmember 180 degrees and maybe it would line up better with the holes in the chassis?
Probably the pics don't show something in the way that prevents this but it might be worth a try?

Ken
Ham
021 408 863

[Nuty|Mike]

hey man i got a rb25det thats had a boo boo with too much boost im willing to part with for some $$ or ill swap for wat ever you might have no turbo on it tho .

[RS13]

Dumb Comment maybe, but...
It looks like you might be able to turn the crossmember 180 degrees and maybe it would line up better with the holes in the chassis?
Probably the pics don't show something in the way that prevents this but it might be worth a try?

Yeah, thats' what a lot of people hear, but if you look at the top picture closely, you'll see that the side of the crossmember nearest the camera is flat, whereas the other end goes up vertical to meet the mount.

So if you turned it 180 degrees, it wouldn't sit flat, or bolt up.

[Zyros]

gez dude against all the advice ppl gave you not to buy a auto nonturbs liner, you did and now throwing money at it

Um, no matter what.. i would end up throwing money at it anyway

[RS13]

Hey man, there is nothing wrong with buying a Nissan OR throwing money at it! I shudder to think how much I've spent pissing around with the almost 50 cars I've owned.. but experience is very worth it!