bbspolo

Does any1 know anything about skyline gearboxes?
Like what different types there r?
Which r the strongest?
Gear ratios?
Were 2 get hold of them?
and any thing else!
Whats involved in fitting them into cossies?

Am looking at building my track toy as bulit proof as possible and a skyline box seems the only budget way of doing this and keeping the 4wd!
Only rearly intrested in the gtr 4x4 boxes but other people might want 2 know about the 2wd ones!

marco polo

iTrader: (1)

hi mate

you could speak to martin @reyland

he does the converstion and supplys the osgiken sequential box with ford fittment bellhousing

he could also fit a standard skyline box to your car

marco

Munch

speak too martoooooon

15D

Cheapest option (relatively) would be a 5 speed box and transfer from a 32GTS4 which also has ratios more suited to a Cosworth running std ratio diffs or alternatively a late model 32GTR or 33GTR 5 speed and transfer. You will also need the pumps and plumbing that go with the transfer.
The tunnel will need alterations to allow fitment so its a very involved job.

bbspolo

Er budget !!!!!! lol
I did look at the reyland conversion but 8 grand if i rember right!
And no disrecpect 2 martin as i know that isnt excatly a standard skyline box he fits! And having seen his workmanship close up every penny would be worth it!
Found anotherplace that would fit a standard skylinebox for 1.5k with me suppling the box!

But since i am an engineer and a fairly good welder i cant see any reason 2 pay some1 2 do it for me!
Plus it would be so much more rewording 2 build the car completely myself! Thats if i all holds 2gether afterwards!
The way i c it there is nothing majorly differcult about it!
1) Adapt floor for box 2 fit
2) Make bellhousing 2 mount skyline box 2 yb!
3) Get a custom prop made (skyline one shortend, with fitterment for ford diff!)
4) Hydrolic clutch kit
5) Recut hole for gearstick (been told they dont come out 2 far froom standard?)
6) Sort out front prop (no idears on this bit yet!)
7) sort out anywirring!
What else am i missing!

bbspolo

Do the 32GTR and the 33GTR use the same box then? Same ratios? and u mentioned 5 speed? what else did they do?

Martin-Hadland

iTrader: (2)

Looks like you have it sorted... Let us know how you get on
There is a bit more to it than most folk think though...

Turbo Zetec

iTrader: (1)

i'm thinking of attempting this too... only bit i'm stuck on is the centre diff pump/controls...

15D

That will get you the box physically mated to the engine and installed in your car.
BUT.......Then you need to sort out the hydrualics/electronics that control the centre clutch.
FYI, The R34GTR has a 6 speed Getrag gearbox but the earlier 5 speed would be a better option as parts for the Getrag are hard to come by and very expensive.
Martins OSG sequential conversion is a bargain for the quality of his install

bbspolo

o Martin im sure there is otherwise every tom dick and harry would be doing it and u wouldnt be charging what u do for it!
But like i said id like 2 give it a bash myself first and then if i fail u will be getting a phone call 2 rescue me! lol

MD Cos I know i just got a friend of mine who works at nissan 2 print me of everything he can get regarding the centre diff pump and all its controls! so hopfully this will shed some light!

However he rearly couldnt find out much in the way of the differences in the different models boxes! This is were im being held up! Dont want 2 go buy a r32gtr box only 2 find out that the 34 boxes r stronger or what ever!

Stavros

R32+33 boxes are the same, as are R32GTS4 boxes, only the clutch operation is slightly different on later models, but thats seperate to the box itself really, and earlier ones are MUCH better as to fit most uprated clutches you need to change to the earlier push clutches.

5speeds are as strong or stronger than 6speeds, and a LOT cheaper.

I got a spare R32GTR gearbox if you want. Push clutch model. Front diff etc too, but doubt you need that.

Turbo Zetec

iTrader: (1)

afaik, the r32 and 33 boxes are very similar, apart from some having different clutch operation, and the r34 uses a 6 speed gertrag... but its pricey ... well, pricey if you're going to attack it with an angle grinder!

Renton

You've missed the clutch itself off the list and there's a chance that 'sort the wiring' might be a slight under estimate of what's involved in knocking a suitable centre diff controller up. And I assume you're aware that like a Cossie 4WD, the aluminium Skyline box case doesn't have a removable bell-housing?

Good luck if you go for it

xr4x4rs

iTrader: (5)

i did look into this aswell

just couldnt find anyone to do the bell housing for me or tell me about the clutch

it would be a cheaper option for me aswell tbh, a si can get askyline box fairly easily and no doubt all the pumps etc

a good std skyline box will take around 500 bhp ive been told aswell

props wouldnt be an issue to get made either i wouldnt of thought

but it is a lot of work to get done

but thinking of it your looking at around 1k-1.5k for the box and everything with it

custom bell housing
custom props
clucth
hydraulic conversion

and poss more

it would proberbly just work out either alittle cheaper or a little dearer than a quaife box or similar, so is it worth the hassle when you could save the money and have a strong cossie box fitted

Lloyd

its not as easy as it first seems,but very worthwhile putting the effort in, iam very impressed with the skyline box in my car,

kjc300

iTrader: (1)

Lloyd,
How do you run the car mostly, 2wd? Would the plates in the centre diff wear out if you ran it 4wd all the time?

Stavros

no. running 4wd would never wear it out unless wheel rolling radius was out.

aside from 32s (maybe not even the V-Spec 32s, i forget), ALL skylines run permanent 4wd, only a very little bit maybe, but some power to both wheels all the time. done for stability at high speed in a straight line, etc etc.

so they apart from 32s, it is running them totally RWD (if you was wheelspinning and doing burnouts that is) that would (albeit slowly) wear the centre diff out.

but on the cossie setups that ive seen, the 4wd hasnt been active (ie it doesnt change torque split on its own, you do it), so it should be able to be set from nothing to full, so no wear on centre diff regardless.

Turbo Zetec

iTrader: (1)

well worth the hassle imo, the mt75 is known for 2 problems, firstly having a weak third, secondly having shite syncros. a quaife box is no good for 500hp, fixit/mullit maybe, but if you're wanting to give it hard launches the box will be nearer Ł5k as i understand


has anyone thought about putting the attessa system in their car?

xr4x4rs

iTrader: (5)

MD Cos

really ive always though the mullet box was around the same price as quaife, but being honest havnt lookd into it much

may have to look into the skyline box a bit more then

but its just the clucth and bell housing i need lol

clucth id imagine would just be one that could be used with a cossie clutch cover as long as its the same diameter and thickness of a cossie one

but could be way off the mark here again

scoooby slayer

iTrader: (4)

is the bellhousing on a skyline box part of the box then ?

GARETH T

yes!

marco polo

iTrader: (1)

yep just like the mt75

scoooby slayer

iTrader: (4)

could you not make an adapter that bolts on the bellhousing and bolts on the block ? that is if the gearbox shaft would still be long enough ?

rapidcossie

input shaft spline set up will be different i would imagine..

Lloyd

md cos, the attessa system is crap,

scoooby slayer

iTrader: (4)

we put a early jag box on a 1960s 327 chevy but that was very simple just adapter plate behind bellhousing and a bush for the back of the crank to reduce down for shaft. and used jag clutch plate

Lloyd

correct, but easily sorted.

Lloyd

after karl had mapped it,i have to use 4x4 as it just spins the wheels in rwd.i am just trying to set up the torque split to be 4x4 on launch then gradually turning to rwd as it gets traction.i can run it just rwd if i stay away from boost,

bbspolo

renton 'sort the wiring' might be a slight under estimate of what's involved

LOL yer a tad optimistic i know!

How does martin get over the bellhousing problem? Cut of the skyline 1 and weld or bolt a new custom made one on! If so does he sell them sepratly? Never liked the idear of spaces!

Thanks for the info guys! and i know every one sujests the 5 speed but if im going 2 go 2 all this effort it would have 2 be the 6speed id use! just got 2 find one now! Proberly be easier buying a complete crashed r34 then at least id know id got everything! then brake the rest 2 recoup some funds!

xr2i-carl

how much are they?

Turbo Zetec

iTrader: (1)

i've seen r32 + 33 boxes on ebay for Ł275, up to Ł800ish and an r34 box for Ł3k

stavros tells me that the r32 uses a pump run off the engine to control the diff, but thinks an r33 uses an electric one. (iirc, was a late night last night and i havent looked through my pm's again, so apologies if i misunderstood )

cossie clutch and skyline clutch plates are same diameter, so was going to get the skyline plate and see if it'll fit with the cossie cover. splines are slightly different.

Martin-Hadland

iTrader: (2)

If he said that he is wrong!

Turbo Zetec

iTrader: (1)

just checked my pm's, he didn't say that! he said that the r32's were driven off the engine he thinks, but said nothing of the r33! i was up till 2am, so probably got confused!

care to divulge anything about it martin?

Martin-Hadland

iTrader: (2)

Don't really want to comment too much further but I will say that none are driven by the engine....

Turbo Zetec

iTrader: (1)

i can understand that martin, thanks for telling us what you already have at least you know we'll all be coming to you when we fuck it up royally!

another thing though, will you sell the centre diff controller seperately?