240SX miles when obtained

Hey. I was just wondering how many miles your 240SX had when you first got it. This question applies to stock KA SOHC/DOHC engines though. I just got my first car, a '91 240SX stock with 174,000 miles on it :eek: Yep, I want to and will swap the engine, but luckily I bought it from a mechanic who took care of it. :D One more question, though off topic, why are the '91 cams the best ones? Aren't they the same in the same as the '92+ 240's?

'91 cams have 15 more hp than '90 and 20 more hp than an '89.
same thing only single cam VS twin cam. you want a twin cam.

61000 when i bought it

164,XXX mi. when I got mine.Still runs pretty strong:biggrin:

I'm too lazy to answer your cam question:bloated:

Originally posted by Kenji_240SX
why are the '91 cams the best ones? Aren't they the same in the same as the '92+ 240's?
91+ are the same engines..... you just want a 91 or newer. the 89-90 have less hp (different motor)...

I've heard that the '91 KA24DE had the "hottest cams" (whatever that means) and are the best in the DOHC 240's. I just wonder if it means that it had slightly better tuned cams or something.

Originally posted by Kenji_240SX
I've heard that the '91 KA24DE had the "hottest cams" (whatever that means) and are the best in the DOHC 240's. I just wonder if it means that it had slightly better tuned cams or something.

91 cams had a 240 degree duration on the intake and a 248 degree duration on the exhaust. All other DOHC cams were 232 intake and 240 exhaust. That's why everybody always says that 91 cams are the best.

bought mine fairly new; yet the previous owner did manage to rack up 128k miles...doesnt matter 2 me, just tryin 2 find a place that will do my swap

oh and i had 91.5k on mine when i bought it

Originally posted by J SPEC SilEighty


91 cams had a 240 degree duration on the intake and a 248 degree duration on the exhaust. All other DOHC cams were 232 intake and 240 exhaust. That's why everybody always says that 91 cams are the best.

Thanks man. How did you find that out?

Picked up mine with 41K miles


I have access to aftermarket cams for these cars... so if you want to go with a "hotter cam" let me know.

I heard you can use an altima intake cam because its 248 degrees and the 91 240 has 240 degree cams

what modifications have to be done when upgrading your cams?