Jun 3, 2010, 3:04 pm · #1
Browse › Engines ›Other engine swaps
S12_rb20det_4wd
Jun 3, 2010, 3:19 pm · #2
That's one wild project!
Waiting for the final decision about the front suspension.
Jun 3, 2010, 3:45 pm · #3
I told you guys it wasn't that hard to do!
Jun 3, 2010, 4:32 pm · #4
Haha yeah I remember this conversation not too long time ago. Damn man what a courage
Jun 3, 2010, 6:04 pm · #5
so it looks like the whole front axle is moving forward.
Jun 3, 2010, 6:34 pm · #6
Good luck! This will be crazy/cool when it's done!
Jun 3, 2010, 7:18 pm · #7
Are you aware of the need to run ABS wheels speed sensor on all four corners plus the ATESSA control module in order for it to be AWD... otherwise, you'll end up with a very HEAVY rwd setup??
Is so, what rear axle/hub setup are you planning to use?
*edit spelling*
Jun 3, 2010, 7:25 pm · #8
seishuku
I told you guys it wasn't that hard to do!
Hasn't been done yet.
Jun 3, 2010, 7:28 pm · #9
Looks like they got a big chunk of it, I don't see any reason why it wouldn't work at this point.
Jun 3, 2010, 7:33 pm · #10
IF they pull it off.... THIS would possibly be the coolest S12 EVER. Hands down.
Jun 3, 2010, 8:21 pm · #11
lol friggin insane
Jun 4, 2010, 12:38 am · #12
tommyIt will be used system "4wd" or "2wd" without use ABS......
Are you aware of the need to run ABS wheels speed sensor on all four corners plus the ATESSA control module in order for it to be AWD... otherwise, you'll end up with a very HEAVY rwd setup??
Is so, what rear axle/hub setup are you planning to use?
*edit spelling*
Jun 4, 2010, 3:21 am · #13
Wow that is a project and a half. Looks promising so far though.
Jun 4, 2010, 7:36 am · #14
Vovka
It will be used system "4wd" or "2wd" without use ABS......
What I'm saying is the attesa system need to use speed sensors from the 4 wheels in order to activate the FWD portion of the AWD system.... if you open the AWD transmission transfer case, you will find a clutch drum inside that make a couple of chain turn your output shaft going to the front diff.... in normal driving condition, the "clutch drum" is spinning freely, making it basicly a RWD, that is why you can run a GTR on a RWD dyno.... When the ATTESA controle module (which is wired to all four speed sensor) detect rear wheel spinage, it activate the clutch drum in the transfer case and thus, transfer some of the power to the front wheel, with a maximum of 50/50 power between the front and rear axle...the ABS speed sensors are not to use ABS brake, but to use as input data for the ATESSA controle module for it to control an hydrolic pump to lock/unlock the the clutch in the bell inside the transfer case
In other words, if you don't connect an ATTESA controle module to 4 speed sensor, you'll end up with a RWD fitted with a transfer case that will be disconnected from the transmission permenantly, thus making it RWD and if you activate permanently the clutch in the transfer case by jumping the power on the pump, you will turn the system into a 4wd without a center diff, thus making it inefficient on dry pavement/street.... the beauty of the ATESSA system, is that it's not on/off like a 4x4, but it's constantly adjusting power biais between rear and front axle over changing driving condition...
Tom
Jun 4, 2010, 11:35 am · #15
Tom is correct. It was half the reason why I chose not to go that route. I am curious as to how this will be dealt with. Not to mention, I've personally never heard of anyone using the needed ecu mated to an RB20. If you need help, let me know. I may be able to answer some questions concerning your project.
Jun 4, 2010, 12:44 pm · #16
very cool. this could be the next great s12 to grace our scene.
Jun 4, 2010, 1:20 pm · #17
I will help Vovka a bit with the translation
It will be set up to manualy switch from 2wd to 4wd, no fully operational ATTESA system !YET! Need to make a normally driving car first, then can proceed with the details. It will use manual switch, connected to the hydraulic clutch in the transfer case.
The front suspension is for test-fit only, he is still designing it. I say that the simplest way would be a custom front suspension like the RaceSilvia from Sweden uses.
When there will be updates we will post them here.
Jun 4, 2010, 1:31 pm · #18
Cool... so esentialy this is not an AWD s-12... it's a 4x4 s-12... as for now with this setup! Could be a really cool rally car, 4 wheel drifting all over the place Keep us informed...
Ah and for Colin's info, I believe that the Atessa control module is completely independant from the engine's ECU, in other words, it's the same module for the rb25, rb26 and even vq35 (g35x)... oh and their is a 93 skyline AWD for sell with a rb20det up here... I'll go search for the link....
*edit*
Sorry, i thought it was an r33 but it's a 91' r32....
link
http://montreal.kijiji.ca/c-autos-et-vehic...QAdIdZ201918484
oh and if you need translation... say so!
Jun 6, 2010, 1:37 pm · #19
Jun 6, 2010, 1:42 pm · #20
dude. you deserve many blowjobs!
Jun 6, 2010, 2:28 pm · #21
This is awesome! Much luck to you this is gonna be a pretty epic car. Ill be following this thread for updates. Cheers.....
Jun 6, 2010, 3:14 pm · #22
Very cool looking with the beast in it!!!
Man I really want a pit in my garage!!! so much easier to work on the suspension, you can adjust it with the normal geometry with full weight on it... makes life a lot easier!
Jun 6, 2010, 5:43 pm · #23
tommyVery cool looking with the beast in it!!!
Man I really want a pit in my garage!!! so much easier to work on the suspension, you can adjust it with the normal geometry with full weight on it... makes life a lot easier!
just jack the car up and set it on wheels..
Jun 6, 2010, 6:21 pm · #24
David Bjust jack the car up and set it on wheels..ya, but thats still not as kool as a pit.
Jun 8, 2010, 11:11 am · #25
is it just my redneck internet or are there no pics lol
Jun 8, 2010, 2:52 pm · #26
its your redneck internet lol
Great work on the swap! this will be way cooler than that AWD B13!
Jun 9, 2010, 12:30 pm · #27
sweet! whats with the welded VIN plate, or should I not ask?
Jun 11, 2010, 11:05 pm · #28
on the rwd rb20 swap were u using a stock r32 crossmember and mounts? also how was firewall clearance
Jun 12, 2010, 3:39 am · #29
As for the VIN plate - yes, you shouldn't ask It is something about registration procedures and other stuff - it's very complicated here.
The stock R32 crossmember fitted there with some modifications:
You need to bend or cut the part of the tension rod brackets to fit:
And need to redrill one of the holes, that is closer to the front end of the car for 4 cm. The brackets is from R32
Stock VS R32:
Need to widen the hole in the crossmember mount, this one:
Also the R32 mounting brackets have long bolts, so you will have to use some washers:
The steering rack mounts is stock from FJ engine, but as far as I see it's the came as from CA
Jun 12, 2010, 4:06 am · #30
Well, some thoughts that may help since you're already setting up your subframe and wanting to do the AWD/4x4 system as mentioned earlier.
The RBs are front sump as are the S12s. The cross-member sits behind the sump. Also, the stock RB's oil pan is a single piece, as you showed a pic of, with the front axle setup as part of it. That means, the front axles are too far forward for your stock strut towers.
The Z31s that had the RB20 (the 200ZR) had an oil pan made up for them to accommodate the fact that they are rear sump (Z31s). But that was also still designed for a RWD.
Jun 12, 2010, 8:56 pm · #31
,,, wtf any clue why i cant see pics?
Jun 14, 2010, 1:47 pm · #32
Jun 14, 2010, 1:57 pm · #33
my god. thats so crazy
are you gonan delete the passenger side seat? sounda like your gonna have to cut that out and build around it
nvm you could probally still run it, i didnt realize it wasnt that bad
Jun 17, 2010, 10:48 pm · #34
VERY IMPRESSED!
It's a big task, and an AWD S12 was something i would have loved to have built.
I can see the floor is going to need a little massage, but the fact that you have been able to dummy up the whole thing with mainly off the shelf items is GREAT!
Well done and *subscribe to thread*
Jun 27, 2010, 2:43 am · #35
you dont have any problems with the swaybar?
just so set it straight
my budy use for his rwd rb20 custom mounts beside that everything was mixed together with oem parts. but he told me that he mod his oilpan cause the s12 swaybar had contact with the the oilpan
for the vin tag
sounds sooooooooooo clischee
soo in which country the s12 is stolen
just joking
Jun 27, 2010, 3:08 am · #36
Wow, that is very well done man. Bet that wasnt a simple task at all.
Jun 28, 2010, 7:36 pm · #37
Damn those are some tight spaces. Nice work man! This is awesome.
Jun 28, 2010, 11:43 pm · #38
god i wish the freeking pics would work for me do you have a photobucket account that you host them so i can take a look
Aug 8, 2010, 2:30 pm · #39
UP
Àïíó ïîæàëóé
÷èñòîâîé-÷åðíîé âàðèàíò,
Êîëåñà ïî÷òè â 0
íàêëîí êóçîâà âðîäå â íîðìå
ïðîäîëæàåì ))
Aug 9, 2010, 1:02 am · #40
This is still a test fitment. The wheels have normal camber now, but still needs ajusting. This welding is for testing purposes only.
Aug 9, 2010, 1:23 am · #41
sweet! keep us posted!
Sep 6, 2010, 3:22 am · #42
Any news in here??
Sep 6, 2010, 4:08 am · #43
goodness... this is pure goodness.
what are you planning on doing with the car? rally reborn??
Sep 7, 2010, 1:32 pm · #44
I'll ask Valodka about it - I'll let you know about any changes
Nov 2, 2010, 3:10 am · #45
bed :(
Nov 4, 2010, 12:18 pm · #46
Nov 5, 2010, 5:03 am · #47
Wow that widen the car quite a bit!
Running yet? that thing is totally insane I like it.. first 4wd S12 ever I believe!
Nov 5, 2010, 7:27 am · #48
on a side note :I dig those tail lights
Also this thing is wicked, throw some overfenders (and some front fenders) on it and call it done!
I really want to see this thing hustling around a muddy corner now
Nov 6, 2010, 11:38 am · #49
Nov 6, 2010, 1:34 pm · #50
man that require extensive modification to make the front axle line up with the diff... i wonder if it would've been easier to move the front differential backward, in line with the stock front axle by changing the diff mount and shortening the front shaft and then redrilling the oil pan for the drive axle to pass through in line with the new diff placement... In my mind, it would be easier than extending the whole body work forward a couple of inch.... and the wheel wells will probably need some modding in order to clear the wheels at full lock
*edit*
And looking at your pictures, you seem to have used a standard rb20 oil pan, I can't see the front differential and the the driver half shaft hole in the picture where you drop the engine in... how are you gonna send power to the front wheels???