Any Other Swaps?????

[Baka Sama]

Ok heres the deal... I just got back from my brothers house. He wanted to show me his new ride. Being the huge conquest/starion fan he is, I just thought he wanted to show me another one he bought (Keep in mind him and his room mate have 4 at their house). Anyway, I get there and he pulls out in a 2nd gen Rx7 with a v8 engine <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/crazy.gif" border="0" valign="absmiddle" alt=':crazy:'> ...... Sweet Jesus.... So he tells me the thing has around 400hp with about 400 torque. Of course we take it for a test drive down hwy85. Imagine driving a mustang cobra in a rx7 body with the top down. oh yeh did I mention it was a convertible. &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'> Many stares, and even more challenges. For the short period of time we were on the road we toyed with a 80's Mustang and blew the doors off a riced out civic. The civic had to be the highlight of the day. The civic road passed us, and of course my brother followed. We road side by side for a few seconds before the civic I'm guessing dropped down to 4th gear to out accelerate us. We heard this loud Vrooom.. But the civic didn't go anywhere lol... We just stayed neck and neck until my bro. floored it (still in 5th gear) and the civic was gone in the distance. It was sweet, you had to be there. So he's gonna go dyno it to see the exact specs on it sometime next week. I'll have to post it when he tells me. Bout time I got home I was ready to give up 240's and buy a rx7 body and prepare for the swap. For about 4,000.00 a 400hp rx7 ain't bad at all. And with all the new cars coming out with crazy power like the 240hp accrod, the 180hp beetle, and the the turbo protege, it would be nice to know you still have more than enough power to beat them. But..... I'm still not gonna give up on Nissan, I like the car too much.

So my question is... Are there any swaps besides the sr that are common for the 240sx? I'm not expecting 400hp, but something a little more powerful than 200-240hp. If not a swap is there any other way to get MORE POWER?

[whateverjames]

you could always buy a turbo kit. get some picture of that rx7!

[MasterOFDrift]

The sr engine can produce massive power enough for your needs, but...... there is only one drawback and that is it costs a lot of money I mean tons, due to the fact that the Sr originally was not meant to be in our us 240's it has to be tuned extra well for it to creat such power and you must also buy the parts for it and a lot of the higher-end parts to tune the sr is japan only. Although a KA might be able to create that much power if it had very little miles on it, but it also would have to be highly tuned. I guess The Sr and Ka weren't meant for massive hp. You could always drop a skyline motor into your car, but that too would cost you an arm and a leg

[Baka Sama]

Ahh... Just as I figured. The only way to get real power out of a 240 is mad money. I still have plans on getting one (right after I sell this eclipse) just for the fun of driving it, but I dont think I'm gonna do any serious engine work/swaps to it.

Anyway, I'll keep you guys posted when I get the 240. And when I get them I'll give yall the specs on the v8 Rx7.

-Later

[240meowth]

so the truth comes out, the jeremy therom 9 corollary 33: there's no replacement for displacement. &nbsp;now i shall take a sad attempt at how to kill a FC w/ v8 engine, due to my limited knowledge of... cars...

notice a lot of imports have... a misly small engine? &nbsp;in the ball park that tops out @ like... 2.4L? &nbsp;the 240sx has a very big displacement consider it's a import. &nbsp;i believe there is such a thing as "displacement tax" in japan, so a lot of japanese cars have small displacements, and the only way to bang out big HP is through turbo. &nbsp;such as the 2.6L rb26dett producing approxmated 320hp but what about torque? &nbsp;i don't know the torque number for the rb26dett but i'm pretty sure it is not that much. &nbsp;also say the s2k w/ 240hp yet... 160torque due to the small displacement engine. &nbsp;import uses technology to produce HP while a lot of domestics use pure displacement to produce power, thus you will see, a lot of the domestic engines still use the same layout as the domestic engine in the 80's. &nbsp;what am i trying to say? &nbsp;that 400 torque will kill you, there's no way you can match it, because the importers usually have small engine.

now, you can always try... say the vq45de and twin turbo it and produce your very own vq45dett than it'll be interesting. &nbsp;vq45de produces 340hp and it's on the infinity techonology, you have a good shot at it. &nbsp;but yah... money bro money, i don't think u'd find a vq45de in a junkyard very often...

another thing to put into prespective, i assume it's the FC you are talking about. &nbsp;the base FC weights the same as a 240sx, unless he has the turbo II which i don't understandy why he would, then you are at a 300lbs advantage w/ a 240sx.

but in the end, a 400hp 400tq FC will beat a 240sx if you guys are going drag/streight line racing. &nbsp;take him to a mountain course or autoX. &nbsp;the FC is beautifully ballanced when comes stock (50.3/49.7 iirc) while the rs13 is approxmately 51/49 w/ ka24de, now with his V8 transplant i'd assume his weight dist be close to 75/25, thus this man will oversteer his way into heaven or understeer... i'm still confused about it. &nbsp;but again, be smart take him around the turns.

cliffs note:
japan is small displacement, america is big displacement, japan have tech to have HP, american have displacement to have torque. &nbsp;go w/ the infinity vq45de and twin turbo you might win, or take your stock 240 and go take him autoX

[uuninja]

I love how every one totally makes up numbers when it comes to motor swaps and how they affect the weight difference and f/r weight balance.

A 50/50 being ideal in all cases is a myth. Sorry it just is. Find me a 911 with a 50/50 balance and you win a cookie.

Second myth more cylinders = tons more weight. Here is now most peoples math goes.

KA = iron, iron's atomic weight = 55.845
SR = aluminum, aluminum's atomic weight = 26.981538
....the SR must be half the weight of the KA.

SR = 4 cylinder
VG = 6
VG must be 50% heavier than the SR.
V8 has twice as many cylinders so it must be twice as heavy as the SR.

A rotary FD motor has 2 rotors,
rotors are kind of like triangular pistons <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>
....it must weigh half as much as an SR.

Sorry but these numbers just don't hold up. And the rotary motor is one heavy hunk. I don't see any one decrying people with 3 rotor wankle's in FD's. That thing probably weighs the most of all (don't quote me).

Unless you actually have the correct weight of the motor, design motor mounts and actually get a picture of how and where the motor will sit. You can't make a educated guess about things like weight distribution. And even then there are more things to consider than just a 50/50 weight split.

Not trying to be harsh but I have seen this one go unchecked too many times. There may or may not be fact behind you statement but the fact is you just don't know.

edit: needed a grooming.

[HippoSleek]

yeah- this post is full of junk science. &nbsp;There's too many other things to correct before it might even start to be useful.

[kurissuS13]

i kno a guy that does these kinda swaps for fun. V8's in FC's, S13's, S14's, etc. and he tells me the same thing about each of those projects. &nbsp;the engine puts out SOOOO much, for the car to handle, that the chasis just bends into an unusable state. is such a thing possible?

[drift into a curb]

I wouldn't say unusable, it's just unstable and downright dangerous for street use if calculations and proper reinforcements are not utilized.

[uuninja]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (kurissuS13 @ Sep. 05 2002,12:12)</td></tr><tr><td id="QUOTE">i kno a guy that does these kinda swaps for fun. V8's in FC's, S13's, S14's, etc. and he tells me the same thing about each of those projects. the engine puts out SOOOO much, for the car to handle, that the chasis just bends into an unusable state. is such a thing possible?</td></tr></table><span id='postcolor'>
If that were true then all of these people with high powered SR's and KA's would have the exact same problem. There are several 11 second 240's that have basically stock IRS and chassis and seem to cope with it just fine. There is no reason that a V8 at the same level would be diferent.

Sure lots of extra HP dose increase strain on all parts of the drive train. At very high HP levels you can start to break stuff. It would depend how much HP we are talking about. I have seen full drag race Mustangs snap, bend, twist all sorts of subframe connectors suspention arms ect. The problem is not the 240sx chassis.

[Baka Sama]

Well, Im not trying to make any calculations about the wieght balance 50/50 or whatever. Considering Its one heavy ass motor in a small rx7 body Im guessing it would be off alot. Im just saying the car was freakishly fast. As far as it being unstable, he told me that sometimes it jumps out of gears. One reason he didnt let me drive it. Other than that the car seemed fine. Even though we did burn a whole tank of gas just driving around town.

Anywho. The reason I posted this was that it was around 400hp (he said a 1/4 mile around 11sec) and was so cheap!! If I could come up with 4,000.00 I could have a 11sec rx7 convertible with a chevy v8 engine. Compared to 2-3k for a 240sx. Plus another 2k for the SR or turbo. And even with that it only puts out about 200-250hp. Just thinking about the hp to money ratio. I wasnt trying to teach anyone anything. Just some food for thought...
<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/blush.gif" border="0" valign="absmiddle" alt=':blush:'>

[KiDyNomiTe]

The most important part is that this guy has a crazy RX-7 that were are waiting for the dynos on &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'> . Sometime in the far future I will own a 2407. Still unsure on what motor will go in it, but this won't be for a while, but after I get my 240 project started I will start researching into the 240Z more, and find some crazy ass engine to put in there, most likely a domestic, or sumthin over 3.0 Liters, prolly won't get a Skyline engine, but possibbly a Supra engine.

Although making a nice Soarer sounds like fun, you never really see those with the TT Supra, I have only seen like 3 or 4 online in the US.

BTW Sorry for getting kinda off the topic, but the 240Z is a better swap car IMO, more choices.