2jzgte cressida?

[coma.white]

i know its not a supra but i have plans to make it a "supra in sheep's clothing" i recently came accross a 1980 cressida wagon with a 4m for sale that if purchased i would try and swap a 2jz into and was wondering to what extent i would have to modify the frame, firewall, trans tunnel, etc. to make it fit (and not twist the frame from the torque). also would i need to get all the mkiv dash wiring to make everything link up or would most of it be easily spliced?



here's a pic of the car http://img.photobucket.com/albums/v6...7/DSC02770.jpg



if anyone has any size specs on the 4m and 2jz engines that would be very usueful.

[Jeeves]

I know that it's a relatively easy swap to swap in the 7MGTE. But, I think the 2JZ would require a good bit more modifications to fit.

[bgrieger]

The engine should fit fairly well...again, any M will swap with any JZ with oil pans and engine mounts themselves being the only question marks...and at that just which to use. You likely can't use the stock turbos and will need to go single, or have the second turbo staring at your passenger when they open the glovebox...space is an issue.

To fit anything newer than the W58 from the MKII supra, you will be beating the trans tunnel. For the 6spd Getrag, you will beat, cut and enlarge the tunnel, and the shifter may poke up somewhere unintended. I know on the MKIII using a 2JZ and a getrag, the shifter is off several inches, but I can't for the life of me remember which way.

That said, the rear suspension of the MKI supra can't keep the rear right corner of the rear bumper off the ground with a 7M launching...this is gonna need some custom suspension. The frame can take it though, but the stock springs and dampers are useless...I don't know how long that rear axle will stay in one piece either...you may want to look to something in a ford 9", or at least a custom length unit made from a mustang...

[coma.white]

thanks for the imput, i checked out the wheelbase, length, and width measurements on the MKIV and the cressida and the cressida is slightly longer with a slightly longer wheelbase but its about 5 inches slimmer which means that engine space is going to be an issue unless the thinner stock tires on the cressida mean the inner fenders are a lot smaller. i'm thinking the W58 would be a better choice than the V160 because of the closer ratios and the city driving but how much would the .545 difference in first gear affect the turbos if at all? speaking of the turbos, with a tasteful scoop or two and/or a custom hood i wouldn't mind the intakes poking out a bit.

[bgrieger]

I'd try to find our what the width of a MKI supra is between the towers. I know the 7M fits there, and hence the 2J would too. celicasupra.com likely has the answer, or some peeps that can give it to you.

1st gear is pretty much a no turbo zone anyhow. Even on our cars there is next to no boost, as there is so little load. If you crank the boost, second quickly becomes the new first as you spin the tires before you really get her rolling. For the streets, second and third ratios are far more important, and of course 5th gear as it's nice to not have the engine doing 4k just to make 60 on the highway...

[coma.white]

the mark 1 supra is one inch narrower than the cressida so i'm going to assume that the engine bay is about the same size and as far as the transmission goes i would love to have the 5-speed but having a very very low budget so the transmission that comes with the engine will have to do unless there is a significant size difference that would work in my favor. i circled around a local black MKIV yesterday and was just dying to take a look under the hood and see what could be my future weapon of choice. today at work i couldn't stop thinking about how light the finished car would be and how much fun i would have walking all over the civics that you can hear from 2 miles away and bmws that think they are something special. i think i read somewhere the other day that the early cressidas were just a tad over 2k pounds (i forget the exact number but it was between 2 and 2.2) which is roughly 1,500 pounds lighter than the mark 4 supra. i'll probably need some super sticky wide tires to get a good launch but the wider the better right.


i think this may all work out in my favor i just need to sell the car i have now (its quickly turning into a money pit) and get started. if it all fits though what changes with wiring and such should i expect going from a 4m to a 2jz? also the car is an auto now and i figured since i will be modifying the tunnel anyways it wouldn't be a problem, i managed to forget the clutch pedal though, how hard/safe is it to install one myself? or do you think a shop would be a better place to get it done? theres a local shop that i hear is pretty good that i may look into trying to get them to sponsor the build up to try and cut labor costs in exchange for slapping the shop name somewhere on the car.

[bgrieger]

The clutch pedal and master cylinder is pretty easy. Get one from a MKI supra. It will likely bolt into existing holes. Granted, MKI's are pretty rare to find parts for, but they are out there.

Wiring is a complete swap. Personally, I'd just get a standalone to control it as it avoids figuring out the interface to the cressidas various inputs. Those can be programmed on the standalone, so no hacking or going without things like a tach.

[coma.white]

thats sounds like the best bet because i can't find any info about the model anywhere, in fact other than wiki i can't find more than like 3 times that year and model are mentioned on the web. the cressida guys on the forum say its a really rare find also so i probably have a ton of trial and error on my hands and will have to hand fab the rough spots.