how to put a 1JZ in an RA23 [Archive]

View Full Version : how to put a 1JZ in an RA23

sheepers

05-02-2007, 03:59 PM

when i first started looking at doing this there wasn't much info around so here is some info to get you on the way to heaps of power.
theres more than one way to skin a cat.......
but this is how i did it.
first, get a 1JZ. if you get an early one with a mid sump and non traction control then its all good.
the non traction control model has a long nose on the throttle body which you can cut back to give you more room to route your intercooler pipe past the radiator.

http://i57.photobucket.com/albums/g233/sheepers-RA28/tbtop.jpg
this shows the TB cut back.

you will find that there are some vacuum tubes underneath but you can re-route the tubes, no problem.

http://i57.photobucket.com/albums/g233/sheepers-RA28/tbmod.jpg
this is the holes blocked off.

you have to mod the sump.

http://i57.photobucket.com/albums/g233/sheepers-RA28/sump.jpg

http://i57.photobucket.com/albums/g233/sheepers-RA28/sumpmodd.jpg
60mm out of the back will see you right.

on the other side of the block is a oil level sensor. the motor will run just fine without it. cut the littel bugger off.
http://i57.photobucket.com/albums/g233/sheepers-RA28/oilthing.jpg
i left the top of it there to cover the hole.
right, now your motor is pretty much ready to go in the hole.
next step is to fix up the hole.....:P :P :P

sheepers

05-02-2007, 04:24 PM

right, stick with your standard crossmember, space it down by 15mm.

http://i57.photobucket.com/albums/g233/sheepers-RA28/crossmebspacer.jpg

next cut off the original mounts and plate the CM like this.

http://i57.photobucket.com/albums/g233/sheepers-RA28/mountbracket.jpg

the spacing is 480mm center to center
http://i57.photobucket.com/albums/g233/sheepers-RA28/mountspacing.jpg

http://i57.photobucket.com/albums/g233/sheepers-RA28/mountstrength.jpg

i also seam welded it right round.

these are the mounts i used, i have no idea what they are out of. if you know please tell me because they both tore in half when i crashed the car.
http://i57.photobucket.com/albums/g233/sheepers-RA28/mounts.jpg

i had to space the turbo side up after i got the car on the road cauz the turbo touched the steering box. i just put a 10mm plate under the engine mount. you could get away with a 5mm spacer.

next, mod the steering box.
http://i57.photobucket.com/albums/g233/sheepers-RA28/steertopmod.jpg

i replaces the back bolt with a dome head cap screw and i ground the corners off the box.
i also slotted the holes in the box and dropped it down by 10mm.

http://i57.photobucket.com/albums/g233/sheepers-RA28/steerbox.jpg

i did the ideler side the same.
http://i57.photobucket.com/albums/g233/sheepers-RA28/idler.jpg

the bump steer is next to nothing according to the alignment machine

youll need to make a heat sheild for the steering box, the exhaust is very close to it.

http://i57.photobucket.com/albums/g233/sheepers-RA28/heatshroud.jpg

more to follow.
sheepers.

sheepers

05-02-2007, 04:34 PM

the gearbox is a W55.
http://i57.photobucket.com/albums/g233/sheepers-RA28/w55withdellow.jpg
i used a clutch and bell housing combo fron dellow in sydney.
the pressure plate is out of a holden one ton ute and with the slave cylinder they supplied the clutch pedal was incredably heavy. it blew the seals in the master cylinder every month.
i found a much bigger one out of a toyota landcruzer and adapted that.

http://i57.photobucket.com/albums/g233/sheepers-RA28/clutch.jpg

as you can see i had to slot the back hole. i also had to grind a groove in the bellhousing to clear the back of the slave.
http://i57.photobucket.com/albums/g233/sheepers-RA28/bellslot.jpg

the flywheel that came with it was way to heavy so i machined the back out of it, i removed just under half the weight.

http://i57.photobucket.com/albums/g233/sheepers-RA28/flywheel.jpg

i used the standard gear box CM..
http://i57.photobucket.com/albums/g233/sheepers-RA28/gbcrossmember.jpg

and i had to move the mount points under the floor.

http://i57.photobucket.com/albums/g233/sheepers-RA28/gbmountmod.jpg

and i had to "mod" the floor to clear the starter motor, nothing to heavy though.

http://i57.photobucket.com/albums/g233/sheepers-RA28/tunnelmods.jpg

the radiator is standard size in the standard location, but its tripple core.
im running a 16" thermo fan in front of the rad.
i had nothing to do with the loom or the wireing but i can tell you that the motor was an auto and we just cut the auto part of the loom off at the bottom of the engine, never been a problem.

thats the basics, there are plenty of fine points that ive forgotten but all you have to do is ask.
latter,
sheepers.

DQIKST

05-02-2007, 06:51 PM

you finally done it + rep

shame i dont have the funds at the moment to do the conversion,

hope you get your 23 on the road soon mate

iBZ

sheepers

06-02-2007, 06:54 AM

i just remembered something,
in the photo of the back of the flywheel you can see a small recess right on the edge of the smallest diamater. you need to machine this recess in to clear a small lump on the crank.
its about 1mm deep amd about 4mm bigger on diamater than the hole in the flywheel.
if you need the exact measurements just ask.
latter,
sheepers.

Major Clod

06-02-2007, 06:25 PM

Awesome guide mate... question of before and after conversion... handling... what were the differences?

sheepers

06-02-2007, 07:01 PM

i changed so many things at once that its impossable to compare, but i will say this, 18RC poo with NO right foot steering vs point and shoot, no fucking questions asked. power, and shit loads of it, when you want it, at the touch of a toe. no comparisson.
DO IT!!!!!!:P :P :P

Major Clod

06-02-2007, 08:01 PM

Mate you're tempting me lol!

Petes77celica

07-02-2007, 10:30 AM

I was waiting for this thread its awesome just one quick question did you have to shorten the tailshaft to compensate for the gearbox being further back? Im guessing the shifter position will also be different? Have you had any troubles with the w55 holding the power of the 1j? What diff are you also running?
Cheers Pete

sheepers

07-02-2007, 02:29 PM

yea i had to shorten the tail shaft but i cant remember by how much.
the shifter is further back but the standard center console still covers it and works well.
i put the drivers seat further back because im a tall bastard and if anything the stick is too far foreward.
the box is fine, even at the end of the development cycle for this motor (and i have lots planned) ill still be using the W55. they are well strong.
diff is crummydoor lsd, VL turbo. the diff works fine, pitty the fluck heads at keesbrough diffs couldnt put it in propperly.......
latter,
sheepers.

Petes77celica

07-02-2007, 09:08 PM

sheepers

08-02-2007, 11:18 AM

ill measure them tonight. those look like they could be the ones because i had to cut off that locator pin.
measurements to follow.
latter,
sheepers

'ol_skool_'75

08-02-2007, 01:16 PM

ive been waiting for this thread 4 ages. its a great basic 'how to' guide, keep up the good work sheepers

sheepers

08-02-2007, 02:47 PM

right, engine mounts. if you know what toyota these are out of please let me know because i need some new ones.

55mm wide.
http://i57.photobucket.com/albums/g233/sheepers-RA28/55mmwidetop.jpg

60mm high.
http://i57.photobucket.com/albums/g233/sheepers-RA28/60mmhigh.jpg

66mm long top.
http://i57.photobucket.com/albums/g233/sheepers-RA28/66mmlongtop.jpg

90mm bolt spacing.
http://i57.photobucket.com/albums/g233/sheepers-RA28/90mmboltspacing.jpg

115 long bottom.
http://i57.photobucket.com/albums/g233/sheepers-RA28/115mmwide.jpg

and they look like this.
http://i57.photobucket.com/albums/g233/sheepers-RA28/lookslikethis.jpg

hope thats what you need.....
latter,
sheepers.

Petes77celica

08-02-2007, 04:41 PM

thanks mate ill get to the wreckers on saturday cos there also out of the old RA60 celicas had the 22r's in them and ill get back to you then when i find out.
Cheers Pete

Petes77celica

10-02-2007, 01:04 PM

Hey guys i found out what car the mounts are from they are out of a toyota ST141 corona today as i went to the wreckers today and got them.
Cheers Pete

sheepers

26-10-2007, 04:33 AM

hi whats the chance of being able to get the height of the engine mounts as i have found that RN85 hilux mounts which is the 22r engine but i found this pic on the net aswell they are slightly different though but they may work depending on size of the on the weekend im goin to check out a couple of places down here as im very close to starting this conversion myself.
http://img228.imageshack.us/img228/8454/rn8520mmspacertx3.th.jpg (http://img228.imageshack.us/my.php?image=rn8520mmspacertx3.jpg)
http://img252.imageshack.us/img252/8624/22rmountrn9.th.jpg (hmttp://img252.imageshack.us/my.php?image=22rmountrn9.jpg)
cheers Pete

UPDATE!!!
what ever the mounts were that i used they are not available anymore, so ive got some hilux mounts the same as the ones pictured above.
this changes one important piece of information listed above, these mounts are much stronger in compression than the ones i had so im not going to space the turbo side up like i had to before. ill run with about 5mm of clearance between the turbo and the steering box. i think that with the stiffer mount it wont be a problem like it was before. time will tell.

in other news, the car is on the mend, we are painting the engine bay tomorrow and ill be putting the engine back in on sunday. i have a members ride thread about it which i will put a link to in my sig.
latter,
sheepers.

Smokey228

17-11-2007, 04:46 PM

Sheepers,

Okay so ive used your idea for my gearbox xmember, but am yet to see the engineer.

Have you got a photo of the mounts in place? Or atleast the combination you intend to put them in?

I have the motor and mounts, but the mounts i got are only the 'top' half. From the rubber down has been cut away... Im not to sure how i am going to go about mounting the motor yet as im going to have to modify the xmember to suit the 1j instead of the 1g now...

Cheers,
Jase

Toy77

17-11-2007, 04:58 PM

Hi guys,

just a quick point for aussies - in nsw if not other states engineers need 10mm clearance around all parts that move, like a motor that rocks.

Cheers
Stew

Smokey228

17-11-2007, 06:08 PM

Nice,

Toy77, youve got a pm aswell :)

Cheers,
Jase

Smokey228

24-11-2007, 02:52 PM

Sheepers, did you use the standard supra alloy mounts on the motor?

I have custom mounts that came with my 1g, though they wont work, the bushes that i was supposed to use them with looks very much like those ones you've pictured...

However, these on the xmember and against the standard alloy mounts, is no where near tall enough to reach the xmember...

Cheers,
Jase

sheepers

24-11-2007, 03:07 PM

yep, standard alloy 1JZ mounts that bolt to the side of the block.
what cross member are you using?

sheepers.

Smokey228

24-11-2007, 07:16 PM

Im using a xt130 xmember from what ive been told. I just had a play with testing the engine in the car but, and it seems that the engine sits to far forward, so im going to look at having the xmember dropped another 5-10mm to clear a lil more and hopefully get it a bit further back again... Dont really want to have to but might have no choice...

I think mount wise, ill use the design that toy77 has gone with, i realised today that although my xmember is suited to these custom mounts, my custom mounts are designed for my 1j. So something will have to get modified...
I like the way his motor sits, so most likely will be my final choice...

I must talk to a engineer now as i think my most liable option for gbox xmember is your design, i dont really know anyone who could put a custom one together for me... :(

Cheers,
Jase

Petes77celica

26-11-2007, 12:11 PM

Hey Guys im actually done this conversion and have got the motor in the car but the allloy part of the mount are not actually the standard supra mounts as they are to short and on the wrong angle i ended up getting a pair of the soarer mounts as they are longer and it fit with no dramas at all.
Pete

Smokey228

26-11-2007, 12:33 PM

Pete,

Got pics?

Cheers,
Jase

Smokey228

29-11-2007, 02:48 PM

Just realised.
What did you do about fuel and clutch lines?

The solid ones are on the wrong side of motor... Did you have new ones made up? Or did you just run extra solid lines around the bay? Or did you use really long braided / rubber? lol

Cheers,
Jase

sheepers

29-11-2007, 03:38 PM

Smokey228

29-11-2007, 03:55 PM

Dammit! I had a feeling you were going to say that!... Spose ill have to look into that now too, bugger the 1jz is going to be expensive!

Cheers,
Jase

Norbie

29-11-2007, 04:39 PM

You don't "need" larger fuel lines unless you're planning to have 600hp right off the bat.

sheepers

29-11-2007, 04:58 PM

over fueling or leaning out, i know which one id rather have.

Smokey228

29-11-2007, 05:13 PM

Norbie, if i have to have lines made up to suit, should i not go bigger while im there?

Its going to be sucking from a gt3540 most likely. Just doing some research into how laggy this turbo will be before i commit to the buy... If not that turbo, than probably a garret gt30/40... Not sure what size rear the 35/40 has yet though!

Cheers
,Jase

sheepers

29-11-2007, 06:52 PM

youve got to make a new line anyway, why not do it once and do it right.

Smokey228

29-11-2007, 07:39 PM

^^ Exactly my point...

Ill talk to linden aswel...

Sheepers, i just want you to know i appreciate all the help your giving me... To such a point, i am offering you my uterus (im not really a girl)... In other words ill want your babies sheepers! lol

Jus kidding, but thanks man! You know there is love ;)

Cheers,
Jase

sheepers

30-11-2007, 05:29 AM

Norbie

30-11-2007, 09:02 PM

Yeah if you're getting new lines anyway you might as well go bigger, but only for future upgrade potential - there's no way your lines will cause a lean out even with a mildly worked 1JZ.

Smokey228

01-12-2007, 09:25 AM

Thats what i would have thought...

But how would one go about swapping the lines from right to left?
As it is now, the old settup had twin lines run up the driver side of tunnel into engine bay, and what would seem like one return run down passenger side...

Could i run a single line as a feed and a single for a return? Or is that silly??
Turbo of choice will probably be a gt3540 in next few months...

Cheers,
Jase