the lt1240sx swap

[lt1240sx]

just an over view of the project

donor car:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs912.snc4/72510_1676844208009_1444614851_31849965_2457265_n. jpg

Engine when i first got it:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs914.snc4/72709_1676848488116_1444614851_31849983_6730292_n. jpg

The recipient:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs653.snc3/32238_1472879069008_1444614851_31327860_1366454_n. jpg


Old engine from 240:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs217.snc4/39169_1252883049245_1444614851_30768429_5015545_n. jpg

Lt1 after i cleaned it up, you can see one of my accessory bracket ideas:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs943.snc4/73662_1676848608119_1444614851_31849984_3468827_n. jpg

[lt1240sx]

things sat for a long while while i got parts and did research on the best way to get this engine in the car. i got pretty exited when i finally got my oil pan from Mckinney Motorsports. but while installing it i noticed one of my cam lobes was all ground down. so i searched for a stock cam for a while and finally decided to go with the cc503. while installing the cam i noticed the cam bearings were shot. so i tore the engine down cleaned all the parts and rebuilt it with King alecular pro series bearings. on the heads i used comp beehive springs and retainers along with Jegs 1:6 ratio roller rockers had the head decked down .010 and sealed them to the block with mr gasket ultra seal .026 thick head gaskets:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs027.snc4/33701_1674842157959_1444614851_31845986_6543152_n. jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs468.ash2/74096_1674842397965_1444614851_31845987_5800225_n. jpg

I also found on an lt1 forum somebody using a relay nice alternator relocation technique:http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs472.ash2/74553_1674846718073_1444614851_31845999_7487483_n. jpg

[lt1240sx]

an fittings welded on
http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs576.ash2/149892_1726197361807_1444614851_31947788_7682368_n .jpg
and impala headers:
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1213.snc4/156535_1726197561812_1444614851_31947789_3385399_n .jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1178.snc4/155019_1726197881820_1444614851_31947790_2688840_n .jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs591.ash2/154393_1726195401758_1444614851_31947787_5762293_n .jpg

[lt1240sx]

and finally time to put it together,,,


took out cross member to clean it.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs413.snc4/47589_1758036597768_1444614851_32013867_6117025_n. jpg

beat the shit out of my firewall.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs758.snc4/65839_1758036277760_1444614851_32013865_5330031_n. jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs744.ash1/163613_1758035837749_1444614851_32013862_4471877_n .jpg

sanding and painting orange motor mounts black.
http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs058.ash2/36239_1758035637744_1444614851_32013860_2189630_n. jpg

took out carpet while waiting on them to dry. using older pre 1991 single cam carpet because it holds up better.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs029.snc4/33831_1758034997728_1444614851_32013857_2983697_n. jpg

still drying.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1226.snc4/155839_1758034677720_1444614851_32013854_422132_n. jpg

my buddy starting to put stuff together.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1203.snc4/155536_1758034357712_1444614851_32013852_4229752_n .jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1236.snc4/156837_1758033277685_1444614851_32013846_6941699_n .jpg

getting it rolled under the car.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1380.snc4/163204_1758032877675_1444614851_32013844_2803870_n .jpg

starting to lower the car over the engine.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs801.snc4/68130_1758032277660_1444614851_32013839_6084304_n. jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs118.snc4/36252_1758032037654_1444614851_32013837_2953897_n. jpg

ran into a clearance issue from my alternator relocation,
http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs733.ash1/162705_1758031957652_1444614851_32013836_805272_n. jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs603.ash2/155529_1758031757647_1444614851_32013835_8266858_n .jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs376.ash2/65469_1758031477640_1444614851_32013832_3131400_n. jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1356.snc4/162890_1758031317636_1444614851_32013831_7879117_n .jpg

excuse the rushed welds. it was getting late lol
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs433.snc4/47652_1758031157632_1444614851_32013830_2760319_n. jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs603.ash2/155592_1758030557617_1444614851_32013827_1467718_n .jpg

and there she is!
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1198.snc4/155045_1758030277610_1444614851_32013825_1056226_n .jpg

decent clearance.
http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs734.ash1/162817_1758030197608_1444614851_32013824_7568819_n .jpg

flush.
http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs601.ash2/155359_1758029957602_1444614851_32013823_2116671_n .jpg

hood closes,
http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs617.ash2/156920_1758029437589_1444614851_32013820_8217806_n .jpg

everything is still a mess. there is a ton of work planed to get the engine bay looking clean. and tucking the wireing and plumbing nicely.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs600.snc4/58053_1758029077580_1444614851_32013819_4256522_n. jpg

shifter fits perfectly.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1362.snc4/163398_1758028957577_1444614851_32013818_1222660_n .jpg

engine sits mostly behind front wheels.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs716.snc4/63600_1758028717571_1444614851_32013816_3500755_n. jpg

there she is about 10 hours after starting to take the cross member off.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1188.snc4/151010_1758027957552_1444614851_32013815_4688811_n .jpg

[lt1240sx]

for some reason i cant post any more pics...

[Blubird]

what kind of setup are you going with ?

[lt1240sx]

t56, unfortunately i have 4:36 gear ratio in the car left over from the 4 banger in the form of an old 180sx r200

[SexyTransAm]

welcome over. this will be a killer ride when done

[lt1240sx]

welcome over. this will be a killer ride when done
yeah thanks man. i like this forum. exept i guess i have to post photos like maby 4 at a time. but i have found some good info on here b4.

[lt1240sx]

i encourage people to do this swap. there are more and more helpful swap parts available thanks to the common ls1/t56 swaps and as you all know the lt1 power plant has proven to be a good performer, and i expect it to do exeptionaly well in a car weiging almost 1000 lbs less than the cars they do so well in already, I started this swap about 2 years ago when I took out my perfectly good running 4 cylinder and sold it to buy the lt1. i ran into alot of hitches along the way were i used forums to help me with ideas. the main purpose of this thread on this and other forums is simply to give back. hope any info from here helps out!

[Chris]

Great swap, Few questions I have is , what are you doing for the driveshaft? How well do you think the factory differental will hold up in it? What parts were requried for you to swap it. Just looks like mounts and a oil pan?

I used to read alot more on this swap but it seems most of them are all ls1 now adays

[lt1240sx]

i am going to use a drive shaft from the drive shaft shop. being that im using the t56. the ones they make for the lsx swaps will work fine. i just need to send them a length measurement and they do the rest
the fuel lines need adapters or something to adapt them to the nissans fuel system.
the cluch master cylender needs to be a 7/8" bore instead of the stock 3/4" there are also a bunch of an fittings that i need to still figure out to get that and the power steering hooked up
i also figured out i need to relocate my fuel filter and some fuel lines to make way for the header.
and also i need to modifye the impala headers to fit in the car a little better along with posibly getting an s14(newer body style 240sx) brake master cylinder so that the lines come out on the oposit side of the cylinder away from the header tubes

[lt1240sx]

Great swap, Few questions I have is , what are you doing for the driveshaft? How well do you think the factory differental will hold up in it? What parts were requried for you to swap it. Just looks like mounts and a oil pan?

I used to read alot more on this swap but it seems most of them are all ls1 now adays

im using a drive shaft from the drive shaft shop, basically the same one people use for the ls1 swaps.
there's also an aray of an. adapter fittings i need to get the clutch hydraulics to work and the power sterring.
i also needed a willwood 7/8 cluch master cyl and i may need a diferent brake master cylender depending on how close mine gets to the header

[lt1240sx]

i also needed some impala headers that i still have to chop up and modify and a 2.5-3" y pipe that i got from flowmaster and a bunch of manderll bent tubing to make the exaust meet up to my existing apexi 3" exaust

[Fastbird]

Awesomeness. That "Hood Closes" shot is one of the most awesome I've ever seen. Never seen one from inside the engine bay with the hood before!

Love the swap. I know the guy who was just in Hot Rod with the purple 96 240 with the LS1 (Chris Nichols).......amazing cars with the right motor in them.

Actually, a friend of my friends here is ditching is RB26 in lieu of a LS1 in his drift car (240) now come to think of it.

[Joker Z28]

That is very sick. Welcome over

[CamaroGirl]

i think this is a really cool swap, never seen it done before, good job!!

[Firebirdjoe]

I had the pleasure of riding in one of these car with the LT1 swap. Scary fast.:face_shocked:

[lt1240sx]

that's pretty cool. what car was it? was it white?

[lt1240sx]

Awesomeness. That "Hood Closes" shot is one of the most awesome I've ever seen. Never seen one from inside the engine bay with the hood before!

Love the swap. I know the guy who was just in Hot Rod with the purple 96 240 with the LS1 (Chris Nichols).......amazing cars with the right motor in them.

Actually, a friend of my friends here is ditching is RB26 in lieu of a LS1 in his drift car (240) now come to think of it.

if you look at the getting it rolled under the car shot. you can see the spot in the front bumper that i held my phone thru to get the shot.,

96 240's (s14's) are nice. i really like them.

[lt1240sx]

back in florida, had another productive sunday.

some things are having clearance issues5778
5779
have to move those lines
5780
this header did not fit like it should have...
so i did this:57815782

[CamaroGirl]

just a little tight eh!
lookin good so far

[lt1240sx]

5783

got my fuel system goin.. just need to do the return line next.57845785

got the colant system squared away:5786

[lt1240sx]

i need to get a better pic in here

[lt1240sx]

http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs058.ash2/36244_1778695074217_1444614851_32061474_7188078_n. jpg

[lt1240sx]

14311443]had another pretty good Sunday, here's the updates.
i found the master cylinder i need. its on my truck...
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs044.snc6/167480_1791356630748_1444614851_32095534_2134647_n .jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs052.snc6/168222_1791356550746_1444614851_32095533_6529635_n .jpg

started hacking on the hooker headers and found out how bad they are designed. they probably flow about as good as a briggs and stratton mufler before we went in there and cleaned them out of there flaws. take a look at what we found.

http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs070.snc6/168078_1791356350741_1444614851_32095531_2885208_n .jpg
a large portion of tubeing protruding almost all the way through the colector blocking off 2 of the runners almost compleetly
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs069.snc4/34812_1791356230738_1444614851_32095530_1044182_n. jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs793.ash1/168361_1791356150736_1444614851_32095529_271313_n. jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs013.snc6/166311_1791355910730_1444614851_32095527_6707203_n .jpg
luckly, we had to modify these anyhow. but i feel sorry for the guy who orders these for an ss impala. and wastes $400 on some junk.

[lt1240sx]

14311443]had another pretty good Sunday, here's the updates.
i found the master cylinder i need. its on my truck...
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs044.snc6/167480_1791356630748_1444614851_32095534_2134647_n .jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs052.snc6/168222_1791356550746_1444614851_32095533_6529635_n .jpg

started hacking on the hooker headers and found out how bad they are designed. they probably flow about as good as a briggs and stratton mufler before we went in there and cleaned them out of there flaws. take a look at what we found.

[lt1240sx]

http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs070.snc6/168078_1791356350741_1444614851_32095531_2885208_n .jpg
a large portion of tubeing protruding almost all the way through the colector blocking off 2 of the runners almost compleetly
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs069.snc4/34812_1791356230738_1444614851_32095530_1044182_n. jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs793.ash1/168361_1791356150736_1444614851_32095529_271313_n. jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs013.snc6/166311_1791355910730_1444614851_32095527_6707203_n .jpg
luckly, we had to modify these anyhow. but i feel sorry for the guy who orders these for an ss impala. and wastes $400 on some junk.

[lt1240sx]

heres with the changes made:
the new passenger side.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs023.snc6/165376_1791355670724_1444614851_32095524_1031504_n .jpg
and part of the driver side. this took alot of work to make fit around the stereing shaft.http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs076.snc6/168610_1791355750726_1444614851_32095525_4365209_n .jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs002.snc6/165271_1791355830728_1444614851_32095526_1002508_n .jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs085.snc4/35632_1791355510720_1444614851_32095522_4584123_n. jpg
http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs762.ash1/165299_1791354830703_1444614851_32095515_3866533_n .jpg
that will change in the future. ill probably buy a colector and redo this. but there is no buget left for a while so were having to make do with the parts we have for now. :(
the end result however less than ideal provides quality, and proper clearance from moving parts and heat sensitive parts.

[lt1240sx]

now i just have to make the y pipe using my flowmaster merge colector.
http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1360.snc4/163270_1791355430718_1444614851_32095521_5260076_n .jpg

[Firebirdjoe]

that's pretty cool. what car was it? was it white?

Yes it was. Real loud too.

[popo8]

Im very excited to see this thing running. You think you will have it done by September? You should take it to KY for the Shootout.

[KLaBZ28]

wow those impala headers suckk.

Awesome work man I like it. Trying to talk my buddy to swap his 240sx coupe with my LT1 motor haha. Everything fits pretty good eh except that alternator :x seems a lil close.

[LTs13]

any new updates? im about to do this same swap