here is my question... i have a 1991 240 sc se coupe 5 speed DOHC..and i bought a junk motor from a 1995 240sx DOHC...my plans are to forge the pistons and get the rods and crank treated and i am going to bolt of a turbo kit... i want to get about 400-500rwhp out of it...but here is my question...what are the dirrerefces between the motors and if there are any how can i fix this prob the easiest way to swap it in????(by the way the motors are the exact same)thanks.

 

the 95 KA is obdI and has cams with less duration and higher lift..for info on building to 500whp check out www.ka-t.org

 

95 KA also has higher compression.

 

no it doesnt

 

You sure? I read on a specs sheet the compression of 95+ KAs are higher than 91-94 KAs, 9.5:1 compraed to 8.6:1 respectively.

91 Specs
http://www.socal**********/faq/1991.html
95 Specs
http://www.socal**********/faq/1995.html

I'm guess ing that's why the 95+ KAs are making the same power as the 91-94 KAs since they have more conservative cams and high compression.

 

the 89-90 KA24E has the 8.6:1 compression and a single overhead cam. 91 on has 9.6:1 compression and dual overhead cams.

 

The Ka24e can either have 8.6:1 or 9.1:1
(depending on year)

Just a little FYI

 

I'm talking DE, not E. I know the E has 8.6:1. but also the 91-94 DE engines.

 

no the s14 has a longer durationm on the cams even though the lift is lower

 

alright ........all i want to know is if there is any wiring problems to where i am going to have to swap harnesses(that is a pain in the ***) cuz i am going to spend alot on this motor and if a cant just bolt in the new motor and go then i am going to junk the block...

 

shouldnt be too hard to do no harder than a sr swap

 

this is the reason that i am not doing an sr swap is because of the wiring.......i want to know if i can bolt on parts from a 91 to a 95.....cuz i am geting all sorts of new parts...pretty much a whole new motor...intake turbo al new forged pistons....and everything inbetween.just please tell me if i cant do this.....cuz t will save me alot of work and alot of $$.by the way i am doing all of the work by myself...and i dont have the most $$ so i have to be careful on what i buy and where i get it from...thanks

 

yea dont worry... i think i got it all figured out...muhahaha ka-t power

 

If the motors are so similair, then why does greedy make a turbo kit for only for the '95 and up.

 

OBD-II. KAs 96 and up, including some 95s have OBD-II which means more sensors.