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Old 03-17-2006, 12:07 PM   #1
kheff46
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Cool ej18 240sx awd???

i got the old ej comin out in a couple days(clip's due), and have an old 240sx chassis layin around from my old racecar. im kind thinkin about makin something different.

i love the way 240's handle and feel. plus the ej awd is lighter than skyline awd drivetrain! just weaker

what do you guys think? is this sacreligious to suby? let me kno if it offends you(i'll probably do it anyway, but i'd like to hear opinions on it). -keith
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Old 03-17-2006, 12:29 PM   #2
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i guess so. power would suck don't know of any one that had made and adapter plate for a sr tranmission
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Old 03-17-2006, 04:09 PM   #3
kheff46
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jaxx- i was gonna use the awd suby trans. and ej18 from my swap chassis. finding axle shaft lengths and getting the shifter centered while clearing everything else is the main things. new drive shaft too.

and i do have the stock wrx turbo and tmic from an 02 wrx. so i could up the power a lil bit from stock 110.
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Old 03-17-2006, 04:13 PM   #4
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IIRC, a 240sx driveshaft actually fits exactly with a subaru transmission. The only difference is it's a bit longer. It's possible it could work.
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Old 03-17-2006, 05:27 PM   #5
kheff46
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wow thanks. i've yet to even compare anything. this gives me a lil hope(even false is ok). i cant wait to pull the ej swap out and test fit.
flat four AWD 240sx!! here it comes...
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Old 03-17-2006, 06:12 PM   #6
PHATsuby
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so, if its a ej18, wouldnt your car technically be a 180sx sounds like a cool idea if things will swap over.

good luck.

Ben
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Old 03-18-2006, 12:27 PM   #7
kheff46
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yeah tru JDM style to boot! i can get the 180sx side glass and everything.

so it seems like you're sayin go for it too! im game. -HEFF
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Old 03-18-2006, 12:35 PM   #8
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I think the motor would have to sit to far forwards in the 240 to make it work with awd...


RWD would be cool too, and it would be different than every other 240 out there...
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Old 03-18-2006, 05:10 PM   #9
kheff46
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either way its gonna be different, thats for sure. but im still gonna try for awd. i always wanted the skyline setup with awd, but they still cost $$. free e checkable swap with ecu, etc. is only gonna go to waste, so gettin creative seems more fun than get $$ for scrap. i think the weight distribution will be almost the same, and lower Cog than stock 240sx. plus awd and the ability to still turbo makes this seem logical almost!
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Old 03-19-2006, 11:01 PM   #10
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it'd be cool just as long as the ej18 isnt too wide for the engine bay.
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Old 03-20-2006, 09:53 AM   #11
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thats what i was lookin at. i tried to measure the 1.8 last night as we ripped it from the bay. i dont have the 240sx for reference right now. i'll be a little more into it(the build) when the critical dimensions are within acceptable margins. and after my sti swap is done! first things first, you know?
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Old 03-20-2006, 11:20 AM   #12
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Anything you want measured on the 240 I can do at my shop. I'd love to help on a project like this, short of actually doing the fabrication work

I'm not quote sold on the idea due to the following factors:
-240sx suspension grometry is inferior to Subaru strut/lateral link design
-Unless the final drive ratios could be match, you would be converting from an R200 rear diff to an R160
-If you were to add Subaru front hubs, steering angle would suck and lug pattern would be converted from 4 or 5x114 to 5x100. FWD Nissan front hubs could be used but custom axles would be required.
-Track width of RWD 240sx is greater than track width of Subarus, custom axles would be required.
-No 240s driveshaft I can find matches any Subaru transmission I can find. (I have a Nissan S14 R200 differential in my BG5 Outback, and I sure have tried) The 240sx's distaces between transmission and center bearing, center bearing and rear flange, and transmisison and rear flange are all different from Subaru. On top of that, the RWD driveshaft is a completely different size and spline count from the AWD driveshaft.
-When RWD vehicles have been converted to AWD (such as the Signal Pikes Peak cars), terrible understeering problems had to be dealt with.

Don't get me wrong, an AWD Boxer powered 240sx would be awesome (way more exciting than the normal 240sx). However, I think you may be better off using only the EJ18 and a modified Nissan bellhousing in a RWD 240sx.

EDITED NOTE: I suppose if this project came through, you'd have a Niss-aru, whereas my car is a Suba-san
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Old 03-20-2006, 12:25 PM   #13
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i think a bunch of the above problems wouldnt matter if he plans on it being rwd only, it would definetly simplify the setup.
and the r200 to r160 wouldnt be bad since the ej18 couldnt make use of an r200 anyway
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Old 03-20-2006, 12:53 PM   #14
kheff46
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mranlet- i was gonna see if maxima, gtir, etc. front hub/knuckles were similar and get new front driveshafts inevitably. unless they happen to need the same size as #XXX from a sentra or such. i kinda figured these would be a $$ item in my cheap junkyard swap project. but so be it.
the trans r160/200 issue was def a concern and i havent gotten to it. i could splice driveshafts together like a skyline (RB25/RB26) swap in the 240. and gotta find what nissan uses a 3.9 FD for a rear diff. my junkyards have nissan, so i gotta shot.
undesteer sux. terrible is worse ,waaaay worse. come on huge ass sway bars!! 240sx susp used to be pretty good its still related to the skyline susp and probably shares parts knowing nissan
inferior may be a bit harsh. i've flogged and owned all 4 identical 240sxs over the last 10 years. great cars at any speed. for rwd its the best IMHO, awd suby has it tho(never drove awd 240sx or skyline). i jump all my cars and push them most of the time day to day. it feels more solid than my suby while jumping and corners far more precisely(probably due to lack of front drive). so it definately has it ups as far as lightweight platforms go!! but i like awd for daily driver purposes as much as anyone else.
im still gonna think this thru just in case. thanks for you input keep me thinkin, its good! -keith
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Old 03-20-2006, 08:20 PM   #15
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The 91-94 Infiniti J30 has a 3.90 final drive. Earlier models of the J30 used the less common 5-bolt axle flanges while the 94, although the most rare differential of the group, used the more common 6-bolt axle flanges.

What I should say is that the 240 suspension becomes inferior once the car is lowered significantly. Angled rear wishbones and front TC rods cause lots of strange things to happen under compression on a lowered car.

I got 2 chromolly axles to go from an R200 differential to R160 hubs for around $300 from Moser Engineering, so I'd imagine that you may be able to make out somewhere in the area of $600-700 for all 4 axles.

For the front hubs, you may be able to inventively adapt the HICAS (rear steering for those who don't speak Nissan) rear spindles from S13 240sx. Usually the bushings absorbed most of the changes in toe on HICAS, but I don't see why a universal joint and a top strut mounting couldn't be introduced. If that route was taken, you'd only have 2 different types of axles for your EJ18 - 6/5 bolt flange style (depending on what J30 rear you use) for the rear and female roll-pin coupling for the front (granted that you use the Subaru AWD transmission.
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Old 03-21-2006, 03:19 PM   #16
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good work! now hold that thought my sti just arrived! seriously. i gotta go!
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