Vh45 Manual swap

[Mettler]

I think I can get a 9 1/2" twin plate but it may be custom, will twin 9 1/2" plates (if i can get them) be ok to use in your bell housing and fly wheel? Perhaps i should use a fly wheel the same size as used in a Supra with a Supra box and Supra twin plate??

I can't give you a definite answer on that, but a twin pressureplate won't be much taller than a single... so my guess is that it would. It's a pretty huge factory VH bellhousing, remember it was designed to house a humongous torque converter.

As for using supra gear, the gearbox itself doesn't care what you use for a clutch and flywheel combo, I only used supra because it's strong, cheap, and common. I'd have preferred a 25t box.

If I were you, I'd definitely go the way of a 9.1/2" clutch/flywheel combo, it's the largest diameter you can fit inside the factory ring-gear... definite strong clutching force... with a twin plate, it'll be a harsh and unforgiving but strong setup.

[SeanDean]

Yes the SR20 flywheel to the VH engines because they share the very common Nissan 8bolt pattern and same hub size, but the SR20 flywheel ring gear is nit the right size. The VH engines use a 124 tooth ring gear. The only other Nissans I know of that use the 124tooth are the VQ and the non turbo VG30 in the Z32. for some retarded reason, the turbo ones use 125tooth.

With VH torque I would not recommend using a Z31 gearbox, or a W5x series either.

Z32 gearboxes can be hard to find sometimes,, but the turbo and non turbo are the same as far as I know except the offset milled for the starter. Since you can use the factory starter just fine with a Z32 NA flywheel, it doesnt matter anyway though...

Right now I am working on a VERY simple and cheap solution that involves a Toyota R154 gearbox.

sdeanl on gmail for more info.


Modified by SeanDean at 12:21 AM 2/19/2007

[ultrapulse]

Right now I am working on a VERY simple and cheap solution that involves a Toyota R154 gearbox.-Sean

Wow, the r154 box is probably the most expensive "ordinary" box you can shop around for over here. A zed 32 box would be half the price here:)

[SeanDean]

Wow, the r154 box is probably the most expensive "ordinary" box you can shop around for over here. A zed 32 box would be half the price here:)

Try Toyota Tacoma/Hilux R150/R151, Aisin; Holden Commodore 5spd AR-5/MA-5 (also found in GM pickup trucks and Hummer H3), Jeep AX15, New Venture NV3550.

All of these bolt to the same pattern as R154.

http://highdesertoff-road.com/...f620b



[img]http://highdesertoff-road.com/gripguru/ ... _label.JPG][/img]

[SaintlyCharBoy]

Try Toyota Tacoma/Hilux R150/R151, Aisin; Holden Commodore 5spd AR-5/MA-5 (also found in GM pickup trucks and Hummer H3), Jeep AX15, New Venture NV3550.

All of these bolt to the same pattern as R154.

Sean, do you know anything about the strength or ratios of any of those transmissions?

[SeanDean]

Sean, do you know anything about the strength or ratios of any of those transmissions?

For strength supposedly they are all comparable, (around 800hp the Aussies usually quote them) For gearing, basically they are all prety low. The truck ones are a little lower than the car versions. If you have an R200 rear end you'll need to run an S15, 350Z, old Q45, S12 V6 or a few other diffs that have between 3.50 and 3.69 gears, or even taller gears can be found in some Z31's and 280zx's

If you have an R230 then you prolly have a 3.69 already. If you want even taller, then get gears from a Pathfinder Armada.

[USsil80]

Hydraulic Throw out Bearing = No Clutch fork/Pivot

has anybody tried replacing a clutch fork assymblie with one of these with any luck?

[slownslurious]

only 2 people to have used those on a 240 both went with ls1... thats a gm style hydraulic throw out thingamabob and I hate them, way way way harder to change than the external slave operating a fork that nissan likes to use. and the feel/effort/effect is all the same.

[slownslurious]

btw with the Z32 gearbox adaptor I have I'm running the OS giken triple plate setup, should handle over 600 ft lbs, so with my est. 450-500 w ft lbs I should be fine.

[USsil80]

btw with the Z32 gearbox adaptor I have I'm running the OS giken triple plate setup, should handle over 600 ft lbs, so with my est. 450-500 w ft lbs I should be fine.

i am sorry what adaptor do you have.... and wouldn't the hydraulic one be easier to adapt than making a pivot point and all the math as far as how far you have to push the throw out bearing

[slownslurious]

no the pivot point and fork are outside the transmission so they wouldn't be affected by whatever belhousing adaptor you use so the throw should be the same.

Unless you opt for a box that doesn't use an external slave, if you go with a box designed for the hydraulic throw out bearing you will have to adapt it.

I am using jon dixons adaptor plate with z32 trans. it sandwiches between block and transmission and uses a flywheel spacer.

[USsil80]

ahhh... wonder if he will still sell some when i get out the service

[gs14racer]

He doesnt sell them now, i contacted him and he wasnt to interested in doing it.

Hence why I'm making my own.

[Secant]

Not likely, you can't just chuck an adaptor plate on... what about the pivot point for the clutch fork ? And what actual gearbox you intending to use ?

Sorry man... get the auto bellhousing, and once you know the dimensions, mill the *** end of it off, weld a 12mm aluminium plate (at least 6000 grade) to it, and cut a profile into it to suit whatever manual you're using. Then put a pivot point in, mount the slave cylinder, and you're away.

All you need to do then is buy one of my flywheels, I'll arrange you a nice clutch kit for cheap, and you'll be sorted.

Can you quote me a price for the whole shebang? Also, since I happen not to have a CNC machine handy, what would you want to put an assembly together (with the clutch, flywheel, etc) if I shipped you a bellhousing?

Quote »- Most popular is to make the 5 speed manual from the 300ZX, the flywheel and clutch setups will bolt to the motor via an adapter plate and spacer.[/quote]Are we absolutely certain there's no adapter plate available?

If there's nothing, then I have a general question: which gearboxes have proven to fit this type of arrangement (re-using the bellhousing) with the shifter coming up at an appropriate location (6 speeds are preferred)?
Modified by Secant at 12:12 PM 4/4/2007