1JZ into RS56 what will I need?

[RLR]

Hi guys I recently purschased a RS56 with a stuffed holden red motor in it. I already had a 1JZ and had been looking around for a project car to put the motor in when this car came up at a super cheap price.
What I need to know is what else will I need I have an auto and Hilux complete rear end with 4.3 diff ratio. I want to do the brakes to 4 wheel discs with sizes etc big enough for future power upgrades. I want to run power steering and upgarde the handling with better shocks, springs etc.
So any good ideas in these areas would be most welcome.

[gianttomato]

OK biggish project.

Start here. Read this thread and I'm sure Rod mentions which PS steering box he used as well as a pile of other stuff which will be very useful to you.

You'll obviously need custom engine mounts and gearbox crossmember. You will have issues with the rear turbo fouling the steering box irrespective of whether you use the smaller non assisted steering box or a larger PS box. To counter this you'll need to go to a big single, or make a new rear turbo manifold to relocate the rear turbo. Unfortunately this requires you to make new dump pipes (which is a good thing because the standard 2 into 1cast jobbie is a POS). Obviously wiring and setting up an EFI fuel system go without saying.

Do you want the auto to be column shift or are you happy to cut a hole in the tranny tunnel and run a floor shifter? I kept mine column shift - you'll have to do a little funny business with linkages. I'd also recommend sourcing an auto steering column and all the linkages if you plan on staying column shift. Some of the fancy pants models ran floor shifters - so might be worth trying to find those bits if possible. If you don't have buckets in your ute, then you'll need to modify obviously.

The RS56 is leaf spring so I suspect the centre of leaf to centre of leaf distance will be 1000mm, exactly the same as a Hilux. It should bolt straight in using the Hilux U bolts - mine did - you'll need to lightly grind away some of the weld so there U bolts don't bind. As for converting the rears to disc, I have a well documented disc brake conversion for the Hilux diff using 291mm vented rotors.

The fronts are reasonably easy to convert to disc. See if you can source some disc brake stub axles for the MS55, otherwise MS65 stuff bolts up. Then it's a simple matter of modifying some HQ discs and calipers to fit. This conversion and many others are well described on Classicrown. You could of course go nuts and do what Luke did and run his 330mm Hoppers Stoppers kit.

HTH. Cheers Dave.

[RLR]

Thanks Dave,
I did read your thread on the disc brake conversion for the Hilux diff and will use those same parts that you have. I also read the thread about brake conversions but unsure as to which way to go. I like the Crown to HQ-WB conversion but not sure what the Max size disc's I can put on from Holdens.
I read the posts that Rod did on his power steering conversion but could find any mention of what model and what parts were needed. I want to keep it colum shift but change it for the auto(currently Manual) as I want to have a bench seat rather than buckets.The issue of the rear turbo fouling wont be a problem as I already have a single I am going to put on(Garrett GT37 EVRT) which is a quite big but so that was part of the reason why I wanted a car that does not have strut tower. What car did your auto steering colum come out off ?
I will need to run some sort of intercooling and I thinking a water to air system would be the easiest way to go. I will also run at fuel system the same as Rod's done as I think this will suit my needs. I will run something like a Mine's ECU as the mtr still has the wiring harness on it.
My plan is to pull out the red mtr and box. Then trial fit 1JZ mtr and box , manufature the engine and G/box mounts, then remove mtr & box and strip the car down
for rust repairs and painting is this the most sensable way to go.

Many Thanks
Rod

[gianttomato]

The other major issue I forgot to mention is the sump. Ideally you'll need a sump from a 130 series Crown (a true mid sump) but you could modify a JZZ30 Soarer or JZA80 Supra sump to suit.

If I were you, I would source an auto column from a 50 series Crown, that way you know it will all bolt in. Make sure you get all the linkages to the auto and the big wide brake pedal - not sure if the 50 series run different pedal boxes for the auto and the manual.

I'm think the steering box Rod used was from an 80 series Crown but best to shoot him an email/PM. You'll obviously need to get a custom high pressure PS line made, the low pressure side is easy.

Love to see pics as it unfolds.

[TheStitt]

yeah I'm looking fwd to seeing how it goes to.

The MS5X colum shift parts I should be able to help out with I'm pretty sure I won't need them again.

The Power Steer, Well Rod used a MS65 box, put a 5X arm on the box, and he runs MS5X inner tie rods and depending on what your brake/stub axle you will proably run a set of MS6X outer tie rods.

The reason for the swapping of the tie rods and the steering box arm, is that. Between the 50' s and the 60's series crowns toyota went up 1 size in the size of the ball joint. So a 60 series tie rod end won't fit into a 50 series drag link. A 60 series drag link is the wrong width for a 50. I can't remeber which way but it is.

I am planning on trying to use a MS112 pwr steer box and trying to get the speed/pwr steer ecu from a MX83 to talk to it,to make the steering progressive.I haven't been able to find a 60 series pwr steer box. I want to put the pwr steer in cause me thinks with the GTE in mine now it may be more lively that it was before.

You should be able to go quite large with the holden HQ brakes as i'm sure some one would of done it before. Also if you didn't want to go as big as me, hoopers do a 300mm disc upgrade for the 50 series crowns because of all the cobra's on Crown chassis.

If you are planning on going similar fuel system to Rod I woud well I have to. I'm running a carter gold lift pump into a 2L or so surge tank, then running a bosch 044 to the fuel rail.

Any more q's don't hestate to fire them at Rod and I