my project - vq35hr powered s13 240sx
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Joined: Oct 2009
Posts: 23
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From: Arizona
Nice man, plan on doing the same in my S14.
you may be able to get rid of the restrictions on the 350z ECU. I've heard companies like UpRev, TechnoSquare, and JimWolf can do it.
may I ask why you decided to swap out the differentials?
you may be able to get rid of the restrictions on the 350z ECU. I've heard companies like UpRev, TechnoSquare, and JimWolf can do it.
may I ask why you decided to swap out the differentials?
yea, theres some good info on these boards if you look around. i havent decided what route to go with the ECU yet, right now the plan is just to get it running like factory.
since the car will basically be a 350z as far as the drivetrain and electronics are concerned, anything people can do to their 350z i should be able to do to my 240sx.
i swapped the differential for 2 reasons, the final drive and the limited slip. the 240sx diff was like 4.11 or something... maybe 4.05 dont quote me. it was also an open diff.
the 350z diff is like 3.54 or something. the tires i plan on running are about a inch shorter, so on the highway, my car will be at just slightly higher RPM than a stock 350z. If i used the 240sx diff i would be driving around with the cruise control on at like 4000rpm.
I was thinking about finding a s15 helical diff, those are like 3.6 or 3.7... which would be streetable and would bolt in, but they cost a lot of money because of the JDMness.
Later on, i was told that the 350z gets its speed signal off the output shafts of the diff. i heard you can change the final drive in a 350z and not recalibrate the speedometer, so that makes sense.
hopefully the dealer will be able to reprogram mine for the smaller diameter of the tires i plan to use... 275/40R17s. maybe some of you autocrossers know something about that... i head some autocrossers like 17s because the tires are cheaper. honestly, thats my motivation too...
since the car will basically be a 350z as far as the drivetrain and electronics are concerned, anything people can do to their 350z i should be able to do to my 240sx.
i swapped the differential for 2 reasons, the final drive and the limited slip. the 240sx diff was like 4.11 or something... maybe 4.05 dont quote me. it was also an open diff.
the 350z diff is like 3.54 or something. the tires i plan on running are about a inch shorter, so on the highway, my car will be at just slightly higher RPM than a stock 350z. If i used the 240sx diff i would be driving around with the cruise control on at like 4000rpm.
I was thinking about finding a s15 helical diff, those are like 3.6 or 3.7... which would be streetable and would bolt in, but they cost a lot of money because of the JDMness.
Later on, i was told that the 350z gets its speed signal off the output shafts of the diff. i heard you can change the final drive in a 350z and not recalibrate the speedometer, so that makes sense.
hopefully the dealer will be able to reprogram mine for the smaller diameter of the tires i plan to use... 275/40R17s. maybe some of you autocrossers know something about that... i head some autocrossers like 17s because the tires are cheaper. honestly, thats my motivation too...
HA! thats crazy. RWD? or AWD?
Do you have any plans to mod the engine or use any aftermarket parts on the tranny? Do, you plan to do any custom color job on the dash panels?
Keep up the good work man.
Keep up the good work man.
Last edited by KhanMan; Oct 22, 2009 at 08:07 PM.
. someday do someday. all the best of luck to you !
I've been following the CSC clutch thread with interest, but i dont really have any plans to do anything with the transmission, except perhaps flywheel and clutch. I am going to get this thing up and running with as many stock 350z parts as possible before i mod it.
As for engine performance, i may do forced induction in the future. I have no concrete plans though. The main advantage I have over an sr20 that has been boosted is that i will have a wider powerband and better delivery... id really like to maintain that. I love seeing the 750hp Zs on this forum, but my goal would be minimum lag. im sure 375-400 whp would be enough to keep me entertained indefinitely, which is acheivable on stock internals. Actually, I've never driven a really fast RWD car before, not even one as fast as a stock 350z. I feel like i can handle a car with a lot of power as long as the delivery is good, though...
I will definitely enjoy this car in its stock 350z engine plus custom exhaust stage for at least a summer. I'm thinking like a 3.5" single exhaust. See what i like and don't like about the cars performance before i spend any money on '350z' parts.
I bet i could fit a twin turbo system... but it would have to be a custom one, though i could definitely use some off the shelf 350z systems as inspiration. The computers will also work, which is by far the biggest plus of all. I want this thing to run good... im not talking like perfectly smooth idle or whatever, but i want it to start every time, and i dont want it to go lean and explode, if possible.
as for the interior, im going to use as many stock 350z and 240sx black interior parts as possible. the airbags deployed though, so there are a few parts i'll have to have reupholstered. i also need custom pieces to match the ends of the 350z dash to the 240sx doors. id like to get a material similar to the 240sx doors to tie the appearance together. these will either be fiberglass or aluminum. i havent thought much about the center console yet, but im sure it'll work out.
For anyone who plans on undertaking a project like this themselves, i think it would be possible with just a regular garage, a welder, and an engine lift. and you could probably improv. on the lift if you wanted to save 200 bucks. but yes, my dad has some awesome tools... mig, tig, lathe, milling machine, press... i know how to use them but my dads skills are 1000x mine, so i wanna learn as much as possible.
As for engine performance, i may do forced induction in the future. I have no concrete plans though. The main advantage I have over an sr20 that has been boosted is that i will have a wider powerband and better delivery... id really like to maintain that. I love seeing the 750hp Zs on this forum, but my goal would be minimum lag. im sure 375-400 whp would be enough to keep me entertained indefinitely, which is acheivable on stock internals. Actually, I've never driven a really fast RWD car before, not even one as fast as a stock 350z. I feel like i can handle a car with a lot of power as long as the delivery is good, though...
I will definitely enjoy this car in its stock 350z engine plus custom exhaust stage for at least a summer. I'm thinking like a 3.5" single exhaust. See what i like and don't like about the cars performance before i spend any money on '350z' parts.
I bet i could fit a twin turbo system... but it would have to be a custom one, though i could definitely use some off the shelf 350z systems as inspiration. The computers will also work, which is by far the biggest plus of all. I want this thing to run good... im not talking like perfectly smooth idle or whatever, but i want it to start every time, and i dont want it to go lean and explode, if possible.
as for the interior, im going to use as many stock 350z and 240sx black interior parts as possible. the airbags deployed though, so there are a few parts i'll have to have reupholstered. i also need custom pieces to match the ends of the 350z dash to the 240sx doors. id like to get a material similar to the 240sx doors to tie the appearance together. these will either be fiberglass or aluminum. i havent thought much about the center console yet, but im sure it'll work out.
For anyone who plans on undertaking a project like this themselves, i think it would be possible with just a regular garage, a welder, and an engine lift. and you could probably improv. on the lift if you wanted to save 200 bucks. but yes, my dad has some awesome tools... mig, tig, lathe, milling machine, press... i know how to use them but my dads skills are 1000x mine, so i wanna learn as much as possible.
Last edited by plusONETEN; Oct 22, 2009 at 09:29 PM.
Registered User
Joined: Oct 2009
Posts: 23
Likes: 0
From: Arizona
yea, theres some good info on these boards if you look around. i havent decided what route to go with the ECU yet, right now the plan is just to get it running like factory.
since the car will basically be a 350z as far as the drivetrain and electronics are concerned, anything people can do to their 350z i should be able to do to my 240sx.
i swapped the differential for 2 reasons, the final drive and the limited slip. the 240sx diff was like 4.11 or something... maybe 4.05 dont quote me. it was also an open diff.
the 350z diff is like 3.54 or something. the tires i plan on running are about a inch shorter, so on the highway, my car will be at just slightly higher RPM than a stock 350z. If i used the 240sx diff i would be driving around with the cruise control on at like 4000rpm.
I was thinking about finding a s15 helical diff, those are like 3.6 or 3.7... which would be streetable and would bolt in, but they cost a lot of money because of the JDMness.
Later on, i was told that the 350z gets its speed signal off the output shafts of the diff. i heard you can change the final drive in a 350z and not recalibrate the speedometer, so that makes sense.
hopefully the dealer will be able to reprogram mine for the smaller diameter of the tires i plan to use... 275/40R17s. maybe some of you autocrossers know something about that... i head some autocrossers like 17s because the tires are cheaper. honestly, thats my motivation too...
since the car will basically be a 350z as far as the drivetrain and electronics are concerned, anything people can do to their 350z i should be able to do to my 240sx.
i swapped the differential for 2 reasons, the final drive and the limited slip. the 240sx diff was like 4.11 or something... maybe 4.05 dont quote me. it was also an open diff.
the 350z diff is like 3.54 or something. the tires i plan on running are about a inch shorter, so on the highway, my car will be at just slightly higher RPM than a stock 350z. If i used the 240sx diff i would be driving around with the cruise control on at like 4000rpm.
I was thinking about finding a s15 helical diff, those are like 3.6 or 3.7... which would be streetable and would bolt in, but they cost a lot of money because of the JDMness.
Later on, i was told that the 350z gets its speed signal off the output shafts of the diff. i heard you can change the final drive in a 350z and not recalibrate the speedometer, so that makes sense.
hopefully the dealer will be able to reprogram mine for the smaller diameter of the tires i plan to use... 275/40R17s. maybe some of you autocrossers know something about that... i head some autocrossers like 17s because the tires are cheaper. honestly, thats my motivation too...
think the stock 350z has a Viscous LSD
I have an S15 Helical LSD, I just changed out the ring and pinion from it to a 4.36 ratio.
I used to run 275's but I went down to 255's recently ( NT-05's )
keep us updated on your build. I'm currently trying to find a VQ35HR.. my only luck is junkyards.. they seem to go for about 2.5k but I'd need an ECU and harness ( more $ ).
wish I could find a front clip for cheap
Excellent project, i sense your enthusiasm please dont get discouraged especially with the wiring thats the part i'm really interested in seeing everything else is just fab work which you guys seem capable of. Thumbs up for devoting so much time and keeping everyone posted you work fast
haha nah i dont work fast... i live in florida and my dads shop is in NY so i dont get much time to work on it... i've been working on this for like 6 months, but only for a few days at a time.... so i guess considering the total number of days i've actually spent working i work pretty fast though.
theoretically i can fly for cheap because my dads a pilot, but waiting on empty seats doesnt really work out if you have to be at work on monday or whetever... im going up for halloween weekend+mon, tue, wed though. 89 bucks each way, hehe. I ordederd a custom radiator from griffin, and it came in a few days ago. i havent seen it yet, but my dad says it looks impressive. i show you guys pictures when i have them. over this next weekend, we're going to build a shroud for the radiator and fans, among other things. im pretty psyched because ive never welded aluminum before, although my dads pretty good at it.
oh well. the waiting in-between gives me time to do some internet research...
ah, and here are some more pictures with the intake manifold on. the fact that the throttle bodies are on the side seems to allow you to place the engine a little closer to the firewall... actually the tightest clearance against the firewall are some water lines, as opposed to a vq35de, where the little u-turn after the throttle body is a clearance concern.
theoretically i can fly for cheap because my dads a pilot, but waiting on empty seats doesnt really work out if you have to be at work on monday or whetever... im going up for halloween weekend+mon, tue, wed though. 89 bucks each way, hehe. I ordederd a custom radiator from griffin, and it came in a few days ago. i havent seen it yet, but my dad says it looks impressive. i show you guys pictures when i have them. over this next weekend, we're going to build a shroud for the radiator and fans, among other things. im pretty psyched because ive never welded aluminum before, although my dads pretty good at it.
oh well. the waiting in-between gives me time to do some internet research...
ah, and here are some more pictures with the intake manifold on. the fact that the throttle bodies are on the side seems to allow you to place the engine a little closer to the firewall... actually the tightest clearance against the firewall are some water lines, as opposed to a vq35de, where the little u-turn after the throttle body is a clearance concern.
The only thing my car is missing electronics wise is front wheelspeed sensors, other than that it will have identical wiring, unless i have to do something because the lights are different... havent even thought about that one yet
350zs have yellow turn signals in back, right? or do the reds flash?
anyways, i got my radiator from griffin. cost about 500 bucks, but its rated to 675 horsepower.
the thing looks pretty impressive. all welded togeather by hand too.
Anyways, I have quite an appreciation for welding aluminum these days.... i spent a LONG freakin' time building a custom aluminum radiator shroud that uses the 350z fans and fits my custom radiator. probably 4 days to do this... longer than it took to get the engine in... a lot of the welding was done by my dad, but i did get to do a bit.
Anyways, it took forever, but Im super pleased with the results.
ballin'
the thing looks pretty impressive. all welded togeather by hand too.
Anyways, I have quite an appreciation for welding aluminum these days.... i spent a LONG freakin' time building a custom aluminum radiator shroud that uses the 350z fans and fits my custom radiator. probably 4 days to do this... longer than it took to get the engine in... a lot of the welding was done by my dad, but i did get to do a bit.
Anyways, it took forever, but Im super pleased with the results.
ballin'
^ballin azz radiator, looks sick, our reverse lights are our turn signals, the actual tail light doesnt flash, at least thats what I've noticed with mine......
Last edited by TRYNALIVEPRO; Nov 18, 2009 at 05:06 AM.
the exhaust manifolds will need to be cut and re-welded to fit.
the cats will work just fine... they hang a bit below the frame rails, but so does the transmission...
the cats will work just fine... they hang a bit below the frame rails, but so does the transmission...