Gearbox adapter plate minimum thickness for threaded holes

[ed]

Obtain a copy of v-eight.com's W58 to auto bellhousing CAD file
Obtain a 3VZ-FE autobellhousing from Prado
Modify CAD file to rotate auto bellhousing bolts desired amount
Get adaptor made
...
Profit ?

this is smartest idea so far i think. and not because i make $20 out of it either! lol... you tell me how much you want it moved and ill knock up the file for you kudos.

as for thickness? thats your call. 3vz auto bellhousing, do you know how deep that is?

either way, seem like the simplest (and most accurate) solution. i know my centrelines are bang on to a poofteenth of a mm with that w58 adapter

[TurboRA28]

Do you mean the 3vz-e prado? the 3vz-fe was only fwd i believe

[CrUZida]

Sorry, yeah you're right.
I was thinking 5VZ-FE Prado.
But it should be the same bellhousing (I recall reading somewhere that VZ and MZ shared the same?)

[TurboRA28]

And with that design I'd use a howe clutch slave cylinder on the input shaft?

[ed]

yup. or tilton or whatever you like.

[TurboRA28]

I'll try and find out depth of a 3vz auto bellhousing as this will be the important bit..

[wagonist]

To throw a spanner in the works:

If you put an adaptor plate in between the bellhousing & the gearbox, doesn't this shorten the amount of the input shaft sticking out into the bellhousing?
Therefore, the clutch plate spline has less to sit on (and may not reach)? I don't know, I've never had one of the boxes you're using.
And as the bellhousing is still in the same relative position to the engine, you can't space the flywheel from the block or it will foul on the bellhousing?

[old_school_jap1]

1st thought; man up and bash the tunnel, it aint a track car if something hasn't been bashed in on it
2nd thought; the bellhousing he has currently is 167mm depth and he is running a longer spigot bearing with that as the standard W5_ bellhousing depth is 160mm. I believe the VZN130 3VZE to R151 bellhousing to have a depth of 160mm, don't know if this would apply to the auto also though

[TurboRA28]

Yeah to be honest this is all getting a bit difficult and I think the 12 deg (measured last night) lean on the gearbox may just have to do.

But if there was a somewhat easy solution I'd be keen to try it out. If 3vze auto bellhousings were 160mm that would be close, as with a 10mm adapter plate I am only 3mm off what I currently have.

Hardest bit is finding one for testing purposes.. Wreckers want $165 + postage from QLD so ends up a $200 experiment.. Not really sure if its worth that.

[WDE_BDY]

My 4V motor uses a plate between auto bell and W55 box, about 18mm thick alloy from memory which just happened to be the difference between the auto bell and the 18RG manual bell that was on the box. Fortunately the flywheel to block face distance was pretty much identical between the 4V and 18RG so everything aligned well.
In your case with the bellhousing already being longer I would either deal with a tilted gearbox or cut the back off the bellhousing and turn it. Could also take the opportunity to shorten it to get rid of the longer spigot bearing.

Callum

[ed]

the problem with all the mixing at matching is that the back of the crank sits in all different places on different models, so you cant always compare bellhousing depths directly.

ive got data on the UZ/JZ/w58/r154/r151 so can use that as a basis for further compasrison.\

the inportant info i need form you jack is where the face of the back of the crank is (flywheel mounting face) on the 1MZ measured from the bellhousing mounting face.

from there everything gets easier

[TurboRA28]

Will collect that measurement tonight.

[wagonist]

If it's convenient, and you wish to pursue this further with Ed Joel, I've got a 1MZ engine sitting in a storage shed at Minchinbury which I could tee up with Ed to look at.

[ed]

im easy. joel if youre happy to measure it, just let me know, or we can go looksee in person at minchinbury.
just need that one measurement, and then i guess suss out that auto bellhousing size, and the rest is easy

[TurboRA28]

I can measure take all of 5 mins..
I just found a bellhousing for $70..
So i am happy to buy for research purposes.