240sx automatic to manual transmission conversion s13 and s14

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180fan
Posts: 7954
Joined: Sat Dec 14, 2002 12:16 pm
Car: 89 fastback

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s13 from our very own mod tenkawa_akito

zerothread?id=77784

S14 from nighkid86

zerothread/181139

Now this is stickied for both s13 and s14 owners. You post a question about this, I'm going to lock it down. Learn to use the search function or look at the top of the page maybe?

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nightkid86
Posts: 721
Joined: Fri Dec 02, 2005 12:14 pm
Car: 97 S14 SE
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Supplement on removing a flywheel:

There are a few ways to get an automatic or manual flywheel on or off.

The easiest by far is to have an impact gun. A quick ziiiip and the flywheel is on the ground. If you don't have an impact gun the flywheel will spin as you try to take it off, you can attempt to brace the flywheel using screwdrivers and such, while holding the crank pulley with a 27mm socket.... or you can use this secret:

EASY WAY TO GET ON AND OFF A FLYWHEEL: upon doing a clutch swap a year or so after my 5 speed conversion, I ran into a really easy way to change the flywheel. Basically you get a new bolt (and possibly a nut since the a/t flywheel isn't threaded) that will fit into a hole on the flywheel (the hole not used to bolt to the crankshaft) and use a bellhousing bolt. Run a chain between the two bolts as shown in the diagram below. it doesn't matter if the chain is too long, the excess can just dangle. Put the chain on and then turn the flywheel to add tension to the chain. The chain will now keep the flywheel from spinning. This works great to hold the flywheel if you don't have an impact gun. Wrench away.

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Hijacker
Posts: 15759
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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The chain idea is an awesome idea. Usually I've just had someone hold the crank still on the front while I use a breaker on the rear. If you have an impact though, you should be able to get the bolts off with no problems.
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jr_ss
Posts: 1681
Joined: Sat Nov 26, 2005 8:03 am
Car: 95' S14

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I would like to add some info to the S14 procedure.

I'm getting ready to do my swap and in taking some conversion steps early I found that when drilling the hole for the MC, a perfect size to use is 1 3/8th's hole saw. It's slightly larger (about 1/32nd larger) than the protrusion on the rear of the MC. This size will allow the rubber to be pinched inbetween the bulk head creating a "waterproof" seal, not that any water would get there but it'll also help with the road/engine noise in the cabin. I would imagine that the S13 MC would be similar if not identical to the S14 and use the same size hole saw, but do not hold me to that as I do not have an S13...

Glenn
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Soravia
Posts: 3200
Joined: Fri Nov 18, 2005 5:45 pm
Car: 2003 Audi A4 1.8T

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I used a steel pipe on the rachet to get leverage and loosened it from a good angle to minimize the flywheel spin. I didn't have help so I used another rachet and pipe to hold it from at one of the bolts. On the last one I re-bolted the one before with anti-size, plastic/brass washer to make hold for the last one. It was tricky but did the job for a poor man. (actually the air compressor plug was broken)
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silman180
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Joined: Sat Mar 17, 2007 10:55 am
Car: 93 240

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hey im new this forum stuff can you give me some pointers on posting questions i see your online

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xTearsFallForeverx
Posts: 140
Joined: Fri May 28, 2004 6:50 pm
Car: 1990 s13 Fastback
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the best way is if you can get at least 1 bolt off, get a long box wrench and bolt the closed end to the flywheel. use that to hold the flywheel while you take the others off. worked great for me. was my grandpa's idea. man comes up with anything. made a valve spring compressor once out 2 pieces of wood and a jig saw. lol
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drewc87
Posts: 99
Joined: Thu Sep 16, 2004 6:10 am
Car: 00 celica gts/93 s13/98 cbr600 f3/89 toyota p/u 4x4/04 crf50

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is an 89 5sp sohc trans and a 93 dohc trans both the same? and does anyone know if an 89se has abs from the factory?
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10sec240
Posts: 3
Joined: Wed Apr 04, 2007 5:49 pm
Car: 240sx

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Hey how much would an s13 full manual transmission swap cost on a 1989 240sx?
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j-nasty
Posts: 6
Joined: Sun Nov 12, 2006 5:01 pm
Car: 1997 240sx

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10sec240 wrote:Hey how much would an s13 full manual transmission swap cost on a 1989 240sx?
If you get someone else to do it for you I've seen the prices go up to around $1,400.
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dnoiser
Posts: 3
Joined: Fri Apr 27, 2007 12:49 pm
Car: nissan 180sx stage 4

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looks nice and clean im impressed how easy it is to find a good body here in usa (im german) our datsuns and nissans where all f"{+ UPI HAD A 96 240 sx se before i bought the 180 everyone told me i shouldnt haha but damned i love fastbacksbtw i never touched the techical **** before i came to usa but this nissans make u a grease monkey hehei think we all love it ;-)have a good one btw im always interested in tips and hints to make it tight
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dosusx
Posts: 1
Joined: Sat Jun 02, 2007 11:40 am

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So if i find a mint s14 auto owned by a grandpa or grandma, this swap will make it exactly like a manual? its the same setup and parts how the manual is? it wont have any problems once i swap for a sr20 and new trans later?
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hookup
Posts: 6
Joined: Sun Jun 17, 2007 4:37 pm
Car: 240SX VERT

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for less money and faster shifts you can get a shift matic http://www.ipttrans.com/nissanauto.shtml#main
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hookup
Posts: 6
Joined: Sun Jun 17, 2007 4:37 pm
Car: 240SX VERT

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http://www.ipttrans.com/nissanauto.shtml#mainlook at the shift matic
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iseenem240SX
Posts: 199
Joined: Tue Aug 23, 2005 10:01 am
Car: 1998 240SX SE

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Anyone running a '95 5-speed transmission on a 97-98 240SX? After auto ECU swap to a MT ECU, CEL came back on after 100 miles.
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whenthesunsleepsx
Posts: 1
Joined: Mon Jul 09, 2007 11:19 am

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assuming that i do the labor, can someone give me like an estimate on how much a manual conversion would be for my 91 s13 240sx coupe, or if anyone did it themselves how much it cost them, i'm trying to get an idea before i start trying to pull this off...thank you
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bone_stock_240
Posts: 3467
Joined: Thu Jan 25, 2007 4:50 am
Car: 1995 Infiniti Q45

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I have seen people buy complete swaps for between 200 to 500 bucks. Any more than that, and you are getting ripped off. Welcome to Nico!
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SWAT Team S14
Posts: 91
Joined: Tue Aug 14, 2007 7:40 am

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nice idea.....wish i woulda read this before........
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KnoxVegasS13
Posts: 15
Joined: Tue May 01, 2007 5:39 pm
Car: 91 Nissan 240sx w/S13 Triple Projection Conversion and SR20DET

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10sec240 wrote:Hey how much would an s13 full manual transmission swap cost on a 1989 240sx?
I got mine for like 500 bucks.
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marcus 23
Posts: 1
Joined: Wed Sep 19, 2007 5:56 pm
Car: 95 240sx

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i resently had someone install an sr20det s14 into my 95 240.The car was auto i bought a front clip and gave everything to him and ever since i got the car back it's bin problems.The wipers and reverse light dont work the the car goes into safe mode if the car is left to idle...i need some help with the wiring
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JDS Performance
Posts: 1365
Joined: Sun Jun 04, 2006 1:31 pm

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I have a DVD on the AT-MT swap - its pretty dang detailed too!
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KGB
Posts: 57
Joined: Mon Oct 08, 2007 8:03 pm
Car: 1989 Nissan 240sx & 2007 Ninja 650r

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hey guys, I seen this topic and was already wanting to post a topic on tranny swaps. First, I am assuming that the creator of this post wants to know the price on swapping a manual tranny into their 240. Of course it all depends on whos doing the job. Some guys can charge you an arm and a leg, and if your lucky some guy will want to sleep with your girl either way its one hell of a price for the job. The tranny alone can cost from a few hundred to even a grand or so.

My question is though, can the trannys from 89-99 intermingle? Cause right now my auto tranny on my 89 240 is shot, and want to swap a KA24de later on.
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JDS Performance
Posts: 1365
Joined: Sun Jun 04, 2006 1:31 pm

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99?? 98' was the last year.

Yes the trannies will work on each other - the s14 ODBII has the crank angle sensor ontop the bellhousing - so there is a hole up there

where the s13 does not use this sensor - you can swap bellhousings the gear box is the same - the rear housings is the same

you can no use the auto speed sensor in the 5 speed - and you can not use the s14 speed sensor on a s13 or vise versa

It cost me around $1500 for my swap - but I did alot of upgrades while I was doing it all - plus I installed the 5 speed brake booster/pedal ect I went the extra mile to do it right.
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matthunter8819
Posts: 12
Joined: Tue Sep 11, 2007 4:25 pm
Car: 92 nissan 240sx coupe

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thanks for the help
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JDS Performance
Posts: 1365
Joined: Sun Jun 04, 2006 1:31 pm

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no problem LMK if you need anythig else!

[email protected]
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skylinegtst93
Posts: 18
Joined: Tue Nov 13, 2007 8:11 am

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good infor
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smoothfilipino
Posts: 2
Joined: Wed Nov 21, 2007 10:26 am
Car: nissan 240sx

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hey i have a 98 nissan 240sx se. and the only thing iv done to the car is suspension. i want to get a swap from auto to manual. does ne one know how much that would cost plus what parts i need to buy
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JDS Performance
Posts: 1365
Joined: Sun Jun 04, 2006 1:31 pm

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My 5 Speed Swap DVD is your best friend

http://www.240SXTECHDVDS.org
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AH240sx
Posts: 48
Joined: Sun Oct 21, 2007 4:07 pm

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Omg it sucks not having a garage. Nor having friends who put cars in garages.
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JDS Performance
Posts: 1365
Joined: Sun Jun 04, 2006 1:31 pm

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rent a storage building - thats how I started out
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