45-z32 box, welding/bolting help needed,

[gdz1la]

i now have all my parts i needi have a tt z32 box and a non t box, what are the differences, someone in nz is claiming the starter faces are different but they seam the same, what about strengths,

i have a non t z32 flywheel, i will be adapting either a tt z32 clutch or a os gikin triple plate. using z32 starter due to v8 starter hitting steering rack.

i want to mate it to 45 as cheap as possible, i like johns adapter, until i saw the flywheel spacer, since i have the correct flywheel bolts and am aiming for massive torque loads im to chicken to risk the flywheel spacer, also hes on the other size of planet and i hate the pound (x3)

how much is require to machine of the housings, and whats the best way to line them up before welding/screwing? is there enought room for a few bolts from the v8 'flange' into the vg box?how thick is johns adaptor and the spacer? if even the box must sit flush?

cheers guys ive been slack, building a s13 rb26dett and a c35 laurel rb30det in between the s15 450sx t88 project lol

[Mettler]

how much is require to machine of the housings, and whats the best way to line them up before welding/screwing? is there enought room for a few bolts from the v8 'flange' into the vg box?how thick is johns adaptor and the spacer? if even the box must sit flush?

cheers guys ive been slack, building a s13 rb26dett and a c35 laurel rb30det in between the s15 450sx t88 project lol

Lol once you've done the V8 you'll never go back to ***** RB engines again

I've attached a crudely drawn paint image showing what dimensions you need to establish.

The red line through the spigot shaft indicates the desired position of where the outside face of the spigot bearing (the one you will use, not the auto converter pilot bush) will be once the assembly is bolted together as it should be. You need to determine this, based on how far in the spigot shaft can go, and where exactly you need your splines to be.

The leftmost dimension is arbitrarily drawn, but you need to determine the distance between the outside face of the spigot bearing and the mating face on the block where the sandwich plate goes. I can't remember now whether this sits proud of that face, or whether it is in fact under flush.

Then you need to decide where on each bellhousing you'd like to cut to achieve matching diameters, to make welding them together easy. You add these two dimensions together, and subtract the thickness of the sandwich plate. The formula SHOULD state 1 + 2 - T = X (T being sandwich plate thickness) but I forgot about it until posting.

You now have the desired cutting depth for your auto bellhousing. Put it on a mill and chop it up !

You're away !

Use a jack, or stack stuff under the gearbox to get it to the desired height, but measure the crap out of it constantly to ensure you have it lined up perfectly. Not really sure how this is done properly, if anyone has a better suggestion, I'm all ears !

[gdz1la]

Lol once you've done the V8 you'll never go back to ***** RB engines again

i can build a rb30det in a few days, that bolts into silvias skylines cefs and laurels, and all for under 2g, the ammout of stress this v8 is cauzing one is enough, although im buying a vh41 as a backup lol

cheers that pic is good, ill prob only use the font inch of the v8 belhousing, that way i got some meat for boltin it iswell

[Mettler]

I had to pull my motor out last night to do some port matching and pull out some broken studs. It took me half an hour to go from fully mounted to sitting on my garage floor.

I reckon once we've got a standard set of engine mounts to suit RB crossmembers (which I've designed and can have laser cut at any time), and a defined way of doing a manual conversion, I reckon VH conversions into rb nissans are gonna become easy and commonplace... it's the R&D that goes into it that's taking us all ages!

[gdz1la]

im using the 4cyl crossmember, the 6cyl was going to be a pain with header pipes to turbo, can i have pictures of 6cyl engine mounts?

[Mettler]

I don't have any decent pics handy, but will have a fresh set of stainless mounts tig welded just after work today. I'll try to get some pics on my flatmate's cellphone camera.

[gdz1la]

i took the v8 bellhousing to engineerim only using the first 40mm or so (enought to retain the std bolts)as too much will have conflicts with the z32 starter motor,

ill cut the vg bellhousing after i have jiged every thing up,

i have had another look at both vg tt and non t housings i still cant see any diffewrences with the starter face or the mounting point, are you sure the differences arent in the starter motor?

im getting oskin triple plate attached to the vg30de flywheel,

auy more suggestion on lining it upill prob sort out pilot bush, bolt the v8 bellhousing cut out on and just feed the vg30 box into it, untill its flush, jack it up to take load of and then lower it half way, taclk weld it, check it spins nicely in neutrak the weld it on both sidesif all else fails its still wont be to late to make a adaptor as i have 2 surplus vg bellhouings

[Mettler]

I guess the easiest way to tell how lined up it is, is to take very careful measurements along the Z axis between mating faces.

Technically, if you've cut both bellhousings perfectly perpendicular to the Z axis, they should just mate up and have the whole assembly be straight anyway.

[gdz1la]

speak english, is z axis the face of the gearbox? the bit thats getting machined, ill acid bath the bellhousings befor i weld them, they are pretty dirty

[Mettler]

X is typically side to sideY is heightZ is lengthways, in the case of a an engine, I tend to think of the direction along the crankshaft to be the Z axis.