vh41 conversion

[tafftunk]

Well my td42+t is gonna be up for sale as well as the manual gearbox plus pto as that wont work with a auto as I want to put in a vh41 and keep it auto sick of changing gears I'm getting lazy in my old age I change gears all day for a living so definitely over doing it when 4wding so if there's any one with the knowledge to get this started on hw to go about doing it, it will be much appreciated I can even pay for the advice by cash or beersies as well I've got very good mechanical knowledge and am very practical plus if I get really stuck I've got my mate Reece from deranged Eng to help me drink my bourbons I mean with fabrications lol

[Checkerhead]

I have a vh45 and standard 2wd auto. The flexible coupling that is standard on the end of the auto bolts to a landcruiser transfercase that has been set up as a divorced case. This way you can have auto and a pto if you so desire. It makes for a fairly long drive train though (mine a lwb). The vh45 auto is the same ratios as a gq.
Don't know what box goes behind the 41s but I'm sure you could do something similar.

[tafftunk]

Oh true hmm good idea but bit long for my liking tho I'm hoping to get good money for my td42 it's in great nick rebuilt pump and stuff so shud b useful to someone I've been told that a safari auto bolts up don't know for sure tho hopefully someone on here knows more or cud point me in a better direction I'm leaving the engine in until I sell it that way the buyer can test drive soon as it's gone the conversion will start very exciting lol

[monstr]

Hi If you pm Darinz of this site he will be able to give all the info you need ,he built a Safari winch truck with a VH45 ,was a real beast .

[tafftunk]

Ol darinz must b busy does anyone else know anymore about this possible conversion?

[bombaybasher]

Not that it's a 4wd or really even close but I own a R32 skyline that I stuck a VH45 in , and being that I made a adaptor plate to fix the standard RB25 box to I can't see why you couldn't use the exact auto to mount it exactly the same and keeping it 4wd, all you need is a good old skillsaw to cut out the plate and a mill to take off 20mm from the bell housing , I'm putting 400+kW through the box and flat shifting it and never had an issue with the box , I did keep snapping axels and I've stuffed 3 bottom ends but to much boost and crap factory oiling was the cause

[Crash bandicoot]

the VH auto bell housing shouldn't need chopping, the jr507e front(used in conjuction with the VH v8 in the cima/Q45 should bolt to the RE04 and 05 trans used in most of nissan's A,D,R,Y,G,H,B platforms patrols mistrals terrano's skyline cefiro, laurel etc etc etc.
Just a matter of tracking down the bit's

[darinz]

Vh and td42 have the same auto. Can bolt from vh to gq transfer case with factory parts. That's what I have in my terrano now. Need both gq and vh autos then pull apart use vh bellhousing torque converter input shaft. Use either gearset. Use gq output etc direct to transfer case. Use vh45 clutches etc.
Running 350 to 450 kw through my one like that depending on tune.
done many winch challenges plus taupo 1000 and woodhill 100 so think it might be ok!
I've also fitted manual valve body and can flat shift on Rev limit of 7500 with no problems.
Doing bearings in motor plus diff ratios at present ready for woodhill and the nz1000. Need diff ratios as with gq ratios it does about 180 in low range. 220 is 5500 in 3rd. (GPS speed) fitting 4.88 in next few weeks so will have a bit more pick up now.

[tafftunk]

Oh wow that's what I'm after cheers darinz nw gotta figure out hw to get rid of the 24v system or get around it then I'm set

[3VILC]

I'm pretty sure it would be easier to rewire the truck, if your using the VH starter. Well, all you really have to do is change all the bulbs to 12v, and I think half the gauges are 12v anyway but I suppose you have to change most of them to work the v8 anyway. Would have to find a 12v patrol wiper motor. Can't think of much else.
Only other way I can think of would be to run both alternators and another battery, but thats probably overkill unless you plan to use the 24v starter

[Crash bandicoot]

run 24 volt alternator, two batteries, but only feed the starter off one battery, and the engine ecu and 12 volt accessories from the other battery.


not ideal, requires rotating batteries occasionally to help even life, but works.

also means you an still run a 24 volt or 12 volt winch.

[ChurchurDan]

The hard part of that plan crash is finding a 24 volt alternator to fit the engine and issues relating to charge imbalance unless an equaliser is used.
A 12 volt conversion would be best but you would need to find a 12 volt patrol to get things like wiper motor, heater fan, window motors and instruments(some of a 24v cluster is 12v anyway) and some 12v bulbs.
If you could get a 24v alternator onto the engine, Then use a dc-dc charger and run an auxiliary battery to run the engine could also work.

[tafftunk]

Hmm 12v conversion wud b best rather than 2 alternators and such man the electrical side is gonna b the pain part lol

[darinz]

I ran twin alternators but converted truck to 12v. 24v was purely yo run the winch.
I'd convert truck to 12v if I was you. Bit more work up front but more reliable.

[tafftunk]

12 v conversion it is then lol nw to find all the necessary parts cool thanks

[tafftunk]

Right engine sold and vh on the way now I've been looking for 12 v parts and can't find any nt unless I want to spend huge $$$$ so I'm gonna run 24v and a separate 12 v system get the thing going and rd legal and slowly get the parts for 13 conversion question is doing what you said darinz about the building of auto out of a gq and vh what about sensors and crap or can the auto run mechanically?

[Crash bandicoot]

you want the auto sensors to match the engine, as the tps etc for the trans ect is wired differently between diesel and petrol.

[tafftunk]

Hmm hopefully my understanding of Darrinz setup is using the vh box and the gq input and output shaft then putting the gq transfer on the vh box hopefully that's what he meant

[darinz]

Basically it's a vh box with output changed to suit safari transfer case. Really straightforward but does require complete Trans strip.

[tafftunk]

Thanks darinz much appreciated bud it will b my first time to pull apart a auto box should be interesting lol that's the easy part I can't find any 12 volt loom or parts to change mine over so looks like I will have to make a bracket up to put my safari alternator on and run 2 separate power sources/looms with the 3rd battery in the rear thats gonna b fun

[Checkerhead]

Since the 24 volt part of the system will be doing a lot less work (lights,gauges,wipers etc) you could run a single 24v battery in the front (instead of the two 12v in series) and a single 12volt battery in the front for your engine electrics. Saves the weight and space that a third battery would require.

Just a thought.

[De-Ranged]

I can't find any 12 volt loom or parts....

*cough bullshite cough* lol admit the truth your spooked on all the electircs work

[tafftunk]

Hahaha not spooked at all Reece lol the only gq 12v system I found was all cut up if the 12v system out of your mistral is gonna work pal that's us a few bourbons and some electrical work or are u scared coz there's no welding involved haha haha my shout for bourbons I've drunken a few of yours for a whole now what u rekon bud

[darinz]

I've got a complete 12v loom dash etc from a spirit.

[tafftunk]

pmd you darinz

[tafftunk]

Well going thru everything I have and have discovered my vh41 has a cast alloy sump well that's fantastic how do I rear sump that if it was steel not a problem but it seem to be also part of the bellhousing to just to b fun does anyone know what I cud do or take it get done and hopefully won't cost mee an arm and a leg lol

[Crash bandicoot]

you can weld cast alloy, and the best bit is you can weld cast alloy to normal plate aluminium. best bet is to probably cut up around where it is bolted and switch the bottom around 180 degrees. only problem then would be finding the right oil pick up

[tafftunk]

Guess a hearty jig will hopefully stop it warping on me the pick up hopefully is the ez part to just extend

[tafftunk]

Cheers Tim (madaz) for the auto conversion tomorrows job is trying your idea swapping the oil pump and bellhousings and converter over sounds better than stripping down the box's yeehaa

[darinz]

Yes and no. You want the VH clutches as there are more of them so while swapping the pump and bell housing will work that'll leave you with TD auto and the VH is a better option.