248 248 cam swap

[Jaino40]

So I've been reading some threads about the 248 248 cam swap. I wanted to know if this swap was actually worth the time and money invested in doing so. I have a 93 S13. Does it only work for the S14??

[simmode1]

Both the 248/232 and the 248/248 are very worth it. I have/swear by the 248/232 in my 5spd s13. Theres power increases everywhere in your powerband. The 248/248 has a little more top end, but I think that doesn't beat the midrange from the 248/232 for NA. Alot of ppl seem to go 248/248 when the go KA-T.

A friend has 240/232 in his auto s13. He loves it. Power comes on strong around 3800rpm.

[Jaino40]

What car can I get the 232 cam from?

[xweav32]

ill sell you mine when i get my 248 this week.

248/232 is good for 5spd and turbo cars

240/232 is good for a cruiser

248/248 isnt that great because of valve overlap. it has the tendency to suck exhaust back in.

overall 248/232 cam set up is the best. you suck in more and spit out less. thats the best way to describe it.

[CRyan]

sorry for the thread jack - but are these the same cams that are ran in the S14 KA that give it more power?

[iitywygms]

248/232 Do it. Nuff said.

[ken240sx]

basically just take a set of s13 cams and throw them in an s14, call it a day...yay easy 5-8hp....same effect as taking out the butterflies in the intake runners of an s13.

s14 has detuned cams but no secondary butterflies in the manifold...s13 has more aggressive cams but also has the butterflies..

however you mix and match cams is up to you and what you want out of your car. hell just get a set of s13 cams and try all 6 combos, switching the intake and exhaust.....see which one you like best.IIRC the s14 cams are 232,232 stock and s13's are 240,248 hell it only takes 5-10 min to get hte valve cover off and another 10-15 min to get the cams out.

[ken240sx]

I've got few sets of s13 cams from the 3 engines i've got hanging around here, i've got a set taken out that has about 35k on them. I tried selling them before on here but then the Army sent me to AZ. And I just happen to be going back again next week, so if you want them just e-mail me and shoot me an [email protected]

[krazydriver]

i run the 248+5/248 setup.

Here's some info:

As for first impressions, im blown away. When i went to 248/248 a year and half ago i thought it was okay, but when i switched to 248/232 i thought it was absolute crap. the mid range was WAY better with 248/232, but then i tried 240/232. 240/232 has a little less top end, but is amazing for midrange.

However, with this revised 248/248 and my other top end power adders im more satisfied with this set up. So get out there and try 248 (plus 2.5)/232 and 248(+5)/248.

zerothread/199832

It works good for me. 3.5K and up is great. when i first did it 3000 to 3300 was a little weak. Post megasquirt that power dip was gone, so i'm guessing it was something in the s13 factory tune for that range that didn't like the cam or something.

[Spiffy240]

just read the thread about the 248+5 setup and its very thorough

but what set of cams would be the best for a ka-t setup?

ive been trying to do some research but i want to see what you guys think

[ken240sx]

for turbo you want a big exhuast cam to help spin that turbo. but look at it like this too, with a bigger intake you can get mroe compressed air in...so I'd say go with intake and exhaust having the same duration or close. so 240/248, 248,248...I definately wouldn't keep a 232 in the mix for turbo.

[Shift_Kouki]

Depends on if you want the cams to give more low end TQ to help spool it up quicker, or if you want them to add more to the top end of the motor. -- Personally I have not run a turbo on a KA, so I can't say much more than that.

With the cams I have now, it seems like the best I can get is going to be a 248(+2.5)/232 setup. I'll need a second 248 cam before I can run a 248(+5)/248 setup.

[ken240sx]

I have an exhaust cam with 91,xxxx miles on it if you're interested shoot me an offer..i'm only selling the ones with 35k on them in the pair. When I was taking out the cams in one of my engines i pulled out the exhaust cam and I trusted a friend of mine to pull out the intake because i showed him exactly how to do it and even did 90% of the job, yet i hear a snap when i was under the car draining the oil and i guess he snapped the cam right after it attatches to the gear cause he tried literally grabbing the cam and prying it out....smart right?? he doesn't touch my engines any more lol....so yeah, just thought i'd share that with you guys...i've never seen someone snap a cam in half before with their hands haha.

[CRyan]

Another quick question - explain to me what the 248+5/248 is? Will someone break these numbers down for me?

And are these cams that came in the S13 KA? All this cam talk has got me worked up to going to a junk yard

[ken240sx]

+5 is the timing...and 240 intake,248 exhaust is what comes in the s13 dohc. you can really just pull those and throw them in your s14 and make an easy 5-8whp without changing a thing. that set-up will give you better mid-range power and a little bit more top-end.

[gingerbredman]

i did the 248/248 swap on my de. it has a mean lope, really. it's kinda weird though, sometimes it runs as usuall and then when it hits 5k rpm's it just goes, like vtec or something. and sometimes it doesnt. it feels like theres a restriction somewhere but, all in all i'm going to stick with it. im sure the 232/248 setup would kick my arse though

but do you guys think that this cam setup would be ideal for turbo? say t3/t4 .63 a/r or similar??