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joash
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March 2005
Mark II diesel -->1J conversion Thu, 17 March 2005 12:48 Go to next message
hey
I have a 90 MarkII Cressida, turbo diesel (2L-T), which blew up two nights ago.
so i am now seriously considering putting a 1JZ-GTE into her.
Being a diesel it inherently brings more complications. I have been told by some that i would need a new fuel tank/lines/pump, and the possibility of the diff ratio causing problems.
However other persons have suggested that with sufficient cleaning the fuel tank could stay... afterall a bit of diesel into a petrol engine is gonna blow anything up, as opposed to vice versa.

Also, i have been informed that the JZX81 is the front cut to get for MX83 cressidas, to avoid complications with sump/cross-member issues. Is this also true for an LX80 Mark II????
How much harder is it to put a JZX90 in???

Any thoughts or advice would be great
Cheers
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CrUZsida
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 13:25 Go to previous messageGo to next message
JZX90 just requires some more wiring issues.
And any intercooler setup it comes with will no bolt directly into the X8 chassis.

What sump config has the 2L-T got?

If the crossmember is the same as an MX83, then the JZX81/90 will bolt in.

Can you just put an MX83 tank/lines in there?
Could be easier.
Otherwise I believe it will have to treated like a carby -> EFI conversion.
ie, surge tank, lift pump, high pressure pump etc.

The front subframe should be the same (at a guess) so if you get a JZX81 cut, the crossmember should swap over.


Maybe take some pictures of the 2L-T installed, or better yet, out.



I'm guessing its manual?
W56?
What ratio diff is it?
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joash
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 13:39 Go to previous messageGo to next message
hey

yeah i'm not exactly sure about the cross member and sump and all that.. i've been under there before coz i actually built a sump guard (coz it had already been hit twice by previous drivers)
i know that you can't get the sump without taking the cross member off, but other than that i really don't know what to tell you. i'll try and get some photos. although don't really know what i can do, it's pretty damn low, i can't really get under it. But i'll see what else i can find out about it.

Nah it's an outo.. don't know who the hell thought of puttin an outo behind a diesel, obviously never driven one before. but anyhow.
and sorry unfortunatley i don't know what the diff ratio is. i have no manual for the car, and haven't had much luck finding out on the net. i was thinking though, if anything the diff ratio will just result in a gearing up effect. meaning lower rev for the same speed. is this not correct?
sure it would result in loss of tourque.. but hey. begga's can't be choosers
thanx
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CrUZsida
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 13:46 Go to previous messageGo to next message
Check the ID plate in the engine bay.
That will tell you what diff/gearbox you have.

If the motor is fucked, take it out, and snap us a photo of the empty engine bay.
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joash
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 13:59 Go to previous messageGo to next message
Gearbox - A43D
Axle - E302

for the mx83 (which my housemate so convinienlty happens to own)
box-A34OE
axle - G312
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CrUZsida
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 14:07 Go to previous messageGo to next message
Ok, you have a 7.1" diff, with a 3.727 non LSD centre.
Solid axle too I believe.

The ratio is fine, but the 7.1" side of it may very well struggle to survive.

I'd say a hilux swap will probably be in order.


How about the fuel tank setup?
Does it look interchangable?

Does the crossmember look the same as the MX83?
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joash
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 14:13 Go to previous messageGo to next message
7.1" diff?
what size is the likes of standard mx83??
do they usually hold up for a while??

i may well be able to get hold an old hilux diff, do you think interchangeablity would be much of a problem?

i haven't really checked out the fuel tank situation yet.. i'll have a look tomorrow so i don't have to roll around in the dark and the wet.

how much do you reckon a tougher LSD diff would be??

[Updated on: Thu, 17 March 2005 14:15]

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CrUZsida
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 14:39 Go to previous messageGo to next message
MX83 runs an 8" diff. Same as the hilux.
With bolt in LSD options.

The E series doesnt really have any LSD options.
It will hold up as long as you treat it nicely.
Start dropping skids and it will die.


As for hilux interchangability, NFI man.
Start here though
http://forums.toymods.org.au/index.php?t=msg&t h=19281&rid=3407&S=26278f87c557f935353855c de4c10384&pl_view=&start=0#msg_157896

And use the search function on the hilux diff.
Many many people have done it to many many cars, just not me!
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..J..
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Re: Mark II diesel -->1J conversion Thu, 17 March 2005 23:54 Go to previous messageGo to next message
CrUZsida wrote on Fri, 18 March 2005 00:25

JZX90 just requires some more wiring issues.
And any intercooler setup it comes with will no bolt directly into the X8 chassis.

What sump config has the 2L-T got?

If the crossmember is the same as an MX83, then the JZX81/90 will bolt in.

Can you just put an MX83 tank/lines in there?
Could be easier.
Otherwise I believe it will have to treated like a carby -> EFI conversion.
ie, surge tank, lift pump, high pressure pump etc.

The front subframe should be the same (at a guess) so if you get a JZX81 cut, the crossmember should swap over.




Maybe take some pictures of the 2L-T installed, or better yet, out.



I'm guessing its manual?
W56?
What ratio diff is it?



JZX90 Will not bolt in. wrong sump wrong cross member. if you want straight bolt in you need jzx81


if you buy any other supra,soarer, jzx90 or jZx100 you will nee d front sump and new engine mounts and use your existing crossmemeber or a mx83 crossmember.

also you would probably find using a jzx81 your front harness from halfcut will mate with rear harness of your existing. saving you money on wiring.
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Skip
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October 2003
Re: Mark II diesel -->1J conversion Fri, 18 March 2005 00:02 Go to previous messageGo to next message
joash: I replaced my 2LT with a 1JZGTE. You will have a shit load of glow plug related stuff to rip out of your enginebay, relays and the like. I would also assume your alternator has a vaccum pump and resivor mounted on the body somewhere which you can also remove. Dont stress about the tank, if you want to run an external pump and surge tank you can just empty your diesel tank with the plug in the bottom then swish 20 or so litres of fuel around in there a couple of times. I was able to use my standard diesel supply and return fuel lines as i mounted my surge tank quite a long way foward, but you probably wont be able to do this so id say new fuel lines for you!
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rob_RA40
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 00:08 Go to previous messageGo to next message
wagonist on here did some research converting a diesel caldina to 3S-GTE (petrol)

do a search i _think_ he found out the fuel tanks are the same/similar for caldina petty/diesel

might be a good chance with the chaser as well
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joash
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 00:24 Go to previous messageGo to next message
ok thanx
good to know i'm not the first person to do a diesel convo.

did you use a jzx81?
I can a jzx90 now for $2500. but i don't know if it's worth the extra work. how hard would it be to find the right sump???

also how did you go with all your wiring and that crap??
roughly how much am i looking at for the surge tank and all that??
i don't have much of an idea

thanx again
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CrUZsida
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 00:30 Go to previous messageGo to next message
..J.. wrote on Fri, 18 March 2005 07:54

JZX90 Will not bolt in. wrong sump wrong cross member. if you want straight bolt in you need jzx81

if you buy any other supra,soarer, jzx90 or jZx100 you will nee d front sump and new engine mounts and use your existing crossmemeber or a mx83 crossmember.

also you would probably find using a jzx81 your front harness from halfcut will mate with rear harness of your existing. saving you money on wiring.

JZX90 is still a front sump you goose.
All the JZX cars are front sump.
Yes, obviously the crossmember can't be used, but we don't know what crossmember the LX80 uses so it could still be bolt in.

Either way it will be bolt in with an 91/92 MX83 crossmember.
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justcallmefrank
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 00:31 Go to previous messageGo to next message
..J.. wrote on Fri, 18 March 2005 07:54

JZX90 Will not bolt in. wrong sump wrong cross member. if you want straight bolt in you need jzx81

This is true in that a JZX81 would be the only bolt in solution, but the JZX90 does indeed have a front sump.
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joash
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 00:37 Go to previous messageGo to next message
what car have you got?? (do the conversion in)
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CrUZsida
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 00:39 Go to previous messageGo to next message
joash wrote on Fri, 18 March 2005 08:37

what car have you got?? (do the conversion in)

Skip has done it to his Bundera, (SWB Landcruiser)
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Skip
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 01:47 Go to previous messageGo to next message
I didnt have any wiring issues cause i used an aftermarket ecu. I just pulled all my engine bay loom to bits and removed everything diesel related i didnt need.
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..J..
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 02:31 Go to previous messageGo to next message
well, every body i know that has used a jzx90 has had to get a custom sump made as it fouls on the mx83 cross member.
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justcallmefrank
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 02:34 Go to previous messageGo to next message
..J.. wrote on Fri, 18 March 2005 10:31

well, every body i know that has used a jzx90 has had to get a custom sump made as it fouls on the mx83 cross member.

Perhaps they're using a different crossmember to the JXZ81/late MX83 one. It's definetly a front sump
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..J..
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 02:35 Go to previous messageGo to next message
1992 grande
1991 glx, both has same problem
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justcallmefrank
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 02:37 Go to previous messageGo to next message
WTF are they doing then, cos they're definetly front sump, Justin used one in his MA61.
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joash
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 03:00 Go to previous messageGo to next message
do you know roughly how much these custom made sumps cost?
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joash
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 03:37 Go to previous messageGo to next message
how badly does it foul on the cross member??
too bad to for me to do some mods, perhaps remove a bit of metal off the cross member?? i worked as a metal fabricator for a couple of years, so i got a bit of an idea how to 'manipulate' metal
or is it a case of, the bitch is right in road, sump needs to be relocated. not just 10-20mm

also would there be legal/engineering problems with me fabricating my own engine mounts???
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CrUZsida
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Re: Mark II diesel -->1J conversion Fri, 18 March 2005 03:54 Go to previous message
Here are pics of 3 sumps.

Two look identical, one looks different, but looks dimensionally the same.

http://www.japimports.com.au/products/jap/thumbs/images/opp6.JPG

http://forums.toymods.org.au/index.php?t=getfile&id=9618

http://forums.toymods.org.au/index.php?t=getfile&id=10296


Any idea which is which?
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