What do all the numbers mean?

[stbrnd]

OK I have had a 91 240 since 91, but have not started the idea of modification until recently and joined this board.  

I have been reading alot of posts that refer to s13 and s14 and K something for engines and models.  

Somebody 'splain it to me. &nbsp; &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/huh.gif" border="0" valign="absmiddle" alt=':huh:'>

[DrDubbleB]

Ok, up until 1995, 240sx's were known as S13's. &nbsp;It is basically the chassis that they were given. &nbsp;1995 & 1996, they are known as S14's and 1997 & 1998 are known as S14b's (I think, or is it the other way around...anyways, that's not really that important). &nbsp;The difference between the S14's and S14b's are the front ends, and headlights. &nbsp;The tail lights are slightly different, but are shaped the same.

All of them came with KA24 engines. &nbsp;Depending on what years, the KA24 was known as a KA24E (single cam) or a KA24DE (dual cam). &nbsp;I think '91 was the first year that they started making the KA24DE for the 240sx, but I can't remember for sure, someone else please correct this, if it's wrong.

That's the basic information that you were looking for I think. &nbsp;Any questions? &nbsp;Welcome to the forums.

[Natty]

Well, I am a newbie myself, but here is what I can gather.
The first two letters is the typle of block.
The two numbers are displacement in liters.
Then, if it is dual overhead cam (DOHC), it will have a "D."
There is normally and "E" after that to denote electronic injection maybe?
If there is a "T," the you got turbo &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>
Exapmles:
The 89-90 US is a KA24E
The 90-98 US is a KA24DE
Add a turbo and it would be a "T" on the end.
The SR20DET is an engine we did not get in the states, SR block, 2L, DOHC, electronic injetion, and turboed.
Hope that helps.
Jeff

[stbrnd]

<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cool.gif" border="0" valign="absmiddle" alt=':cool:'>

I think I am getting it now. &nbsp;So what about a company like unstable hybrids putting in a RB25DET &nbsp;or a RB26DETT?? &nbsp;Where do these engines come from?

[DrDubbleB]

The RB series engines are the famed Skyline engines!!! &nbsp;I wish I could afford to do an RB26DETT swap!!! &nbsp;I think I'll just keep saving until I can afford an entire skyline though (when I'm about to croak...maybe I'll be able to afford one)! <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=':p'>

[stbrnd]

OK, now for the really dumb question. &nbsp;I got an automatic transmission and not a manual (it was all they had where I was at the time of purchase) &nbsp;Does that stop one from being able to swap to a SR20DET?? &nbsp;

Also, where do I go to look for Tower Braces, coilovers, etc to improve handling? &nbsp;I have always felt that mods should be done Handling, Braking, Power, then Speed... &nbsp; <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=';)'>

What are the best handling mods to do?

[twofortysx]

The automatic transmission will not limit your ability to do the SR swap. &nbsp;In fact, with the complete SR swap you will get a new 5 speed transmission/clutch and so on. &nbsp;You will just need to do the install work for the manual conversion. &nbsp;
*** I'm pretty sure about receiving the clutch, someone else will know for sure though ***

For mods, look to www.240sx.org and check out the specials section. &nbsp;You can go to www.enjukuracing.com, www.injen.com or call your local performance shop.