180SX or 240SX?
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^^^ yes we know that, actually we have knon this longer then you have been on the site. :icon_salut:
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You bought a car and you didn't know if it was a 180sx or a 240sx?? Wow.....
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SR is wanted cause its factory turbo, revs higher, and supposedly has stronger internals. But lately 1/10 SR coming in from what i have scene requires rebuilds and more then that go boom with in 4-5months. Parts are way more available cause these motors have been modded in japan for over 10 years
KA is a very torquey motor. Just doesnt rev past 7k with out building the whole head. and if you have ever road in my car it doesnt need to rev past 7k well if i could it would be more fun. but it scoots the way it is
rb26 would require over 10k in parts to get running right, not including labor. unless you are a skilled fabricator and mod and go single turbo from the start.
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the 180SX and its crazy derivative, the Sil-80 (Silvia front end, 180 back end) were popular drift cars in japan. the "Impact Blue" 2-chicks team drove a blue Sil-80 in Initial D

IIRC, in Japan you pay excessive tax and insurance penalties based on displacement, so a 1.8 or 2 liter is going to tend to be more popular than a 2.4 liter.
The big torque of the KA fits the perceived image of american roads and drivers better than a high-winding high power motor. Consider that honda ruined the F20C after a couple years in the US market by making the F22 and thus appeasing all of the "it has no torque" pussies we have here...
The RB can rev very high... 8000 rpm is stock i think... that's quite the feat for an inline 6.
the CA and SR motors may also be lighter than a KA which might be a consideration as well.
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All 180SX were hatchbacks. Not all S13 240sx are hatchbacks. There are 240SX that are coupes. The counter part to that in Japan is the Silva. The Silvia in Japan is a coupe and does not have pop up headlights, but instead has the Silvia front end that is a common front end swap for the 240SX. The 180SX tail lights can be installed in a 240SX fastback very easily. Stickers on the side window can be installed easily also. Converting a 180SX to left hand drive and putting a KA24DE in it is retarded. The CA18DET is an old motor and when brought to the states it probably has not ran in 5-10 years. There typically will be gasket problems due to age and no use. With the SR20DET, most people go the cheap route and get an older version SR20DET. Spend the extra money and get a newer SR20DET in order to get one that doesn't have 15 year old gaskets. The RB26DETT is a very difficult swap. The RB25DET is a much easier swap, though it is expensive due to having to buy motor mounts, a custom driveshaft, and some other small things in order to install it correctly. The RB20DET can be swapped in with about the same amount of work as the SR20DET.
Here is a link to a beginning look at the common engine swaps available for a 240SX.
http://www.club240.com/forums/showthread.php?t=38496Any other info is easily accessible on the internet and 240SX forums. I knew nothing about Nissans till I bought my 240 this past summer. Then I got on google and did alot of research. I haven't had to ask questions because the info is readily available if you look for it. Ebay even has an article that is informative.
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