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oneline180
Offline
60 posts
93 RMS13
katy tx
7-9-2004
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so what if you put the motor together and found out you have the cams backwards? can you just get the lobes to point outwards (facing away from each other) or should you flip them the way they are supposed to be?
Gotta give it up to Nissan for letting us play with all their little randomly active gremlins they left in our cars! 
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s13sr20chris
Offline
4350 posts
nissans
newport news virginia
6-10-2003
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| « Re: (InsanityInc) | 4:04 PM 10/30/2005 |
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| Quote, originally posted by InsanityInc » | Interesting. If I recall, the cams have a little I and E engraved on them, don't they? |
nope, most other nissan stock cams do but not ka cams.
http://www.freakedforjesus.com/
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s13sr20chris
Offline
4350 posts
nissans
newport news virginia
6-10-2003
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| « Re: (oneline180) | 4:05 PM 10/30/2005 |
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| Quote, originally posted by oneline180 » | | so what if you put the motor together and found out you have the cams backwards? can you just get the lobes to point outwards (facing away from each other) or should you flip them the way they are supposed to be? |
no, you must swap them.
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InsanityInc
Offline
2527 posts
8-18-2004
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| « Re: (oneline180) | 8:10 PM 11/13/2005 |
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| Quote, originally posted by oneline180 » | | so what if you put the motor together and found out you have the cams backwards? can you just get the lobes to point outwards (facing away from each other) or should you flip them the way they are supposed to be? |
Well, you CAN keep the cams as 248/240 so long as you can get them aligned right. But it will change the performance of the car. And whatever you do, DO NOT try to start the engine before you have thoroughly rotated it by hand.
Backpressure is never good. Ever.
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Chezedik
...and then there were three.
Offline
4709 posts
1991 Nissan 240sx
Overland Park KS
12-17-2002
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When hand rotating, I will not bend a valve right? Because I am having a hell of a time here, and I did hand rotate first. Not with any force but I did hit a valve I believe.
Check me out, I'm a ricer: "I am going to get a stage two turbo kit, and nitrous, just like I saw on N4S Underground!!!"Stuff for Sale:
!!!BUY MY CAR!!!! 1991 240sx KA24DE-t for sale, very nice!
Stock and Performance Parts For Sale FS: KA24DE MAFS, Wheels, MORE! FS: TiAL 38mm, Jacob's i.C.E. Pak Ignition system, Z31 T3/T04b V-trim turbo more
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Skidmark
Offline
52 posts
1991 Nisan 240SX
Lawrenceville GA
12-12-2005
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Unless you really wrenched the crap out of it you won't bend any valves. In the future I would reccommend doing what I did. TDC #1, take a center punch and LIGHTLY put corresponding numbered tick marks on the chain and the sprocket. * for intake, ** for exhaust, *** for intermediate sprocket, then do the same for the rear chain. As long as you TDC the motor before you put it back together, it's pretty much impossible to mess it up. I know this doesn't really help you guys who have already disassembled your heads. Just for future reference I guess.
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Chezedik
...and then there were three.
Offline
4709 posts
1991 Nissan 240sx
Overland Park KS
12-17-2002
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I'm not sure I have F'ed it up, but something is seriously wrong with compression, and I am getting tired of working on this motor. I will just take the cams out and see if I can get proper numbers then.
If I can, then I know it is timing. If I can't then I add oil to the cyls and see if compression rises, if so, the head comes off and I figure out something with the pistons and wrings. If not, then I bent a valve on my expensive head. So we will see after finals.
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Loofee95SE
Offline
277 posts
u gota sister??
GADSDEN AL,USA
10-17-2002
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does this mean: S13 exhaust cam not worth my time??? I have a set of cams, not sure which 1 is Exhaust or Intake..but it's S13 ka for sure..I believe that the exhaust has orange paint on it before I uplled it out. but it seems like its too much trouble installing it. anybody want it?? make me an offer loofeeturbo2@hotmail.com
Will somebody please give the man more boost!!
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Chezedik
...and then there were three.
Offline
4709 posts
1991 Nissan 240sx
Overland Park KS
12-17-2002
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I am concerned myself, because I have the S13, w/o the SCVs or almost any of the other emissions stuff. But I have heard the biggest part of the gains on the S14 came from not having the SCVs, so umm, I guess that is your answer. If anyone else can back it up.
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Suicide.Veteran
Offline
264 posts
93 Nissan 240sx
Clarksville Tennessee
3-19-2006
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I have a question about the cam brackets. I pulled my cover off cuz im doin a rebuild, and when i looked at the cam brackets some of the I (intake) ones were on the exhaust side, and so on. As long as i have the right numbered bracket in place, does it matter if its intake or exhaust?
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tre
Offline
18 posts
91 240sx fastback
Shoreline Wa
1-11-2005
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| « Re: (Chezedik) | 6:32 PM 5/28/2006 |
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Dial indicators and marking the crank when the intake side on cylinder one starts opening is the BEST way to do it. IF the engine is in the car.
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Skinsk
Offline
21 posts
1993 240sx fastback
London Ontario
5-19-2005
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| Quote, originally posted by H.D.HUMPERDINK » | | I have a question: I know that on push rod motors you have to break the cam in, and I was wondering if you have break in cams on our cars? |
I think that you would have to break in a new cam aswell on a dual (or single for that matter) overhead cam. As an in block cam you would want to be shure everything was in working order before road testing.
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rsmithdrift
Offline
1722 posts
1993 240sx fastback se.
Sarasota, FL/Chattanooga, TN FL/TN
1-27-2006
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This seems to be the place to ask.....I've heard swapping in a exhaust cam out of another 240sx DOHC in place of the intake cam will get you your top end to a good level. I was wondering what would happen if you simply swapped the exhaust and intake cams. Meaning the exhaust cam is now intake cam and intake cam is now the exhaust cam. Intake (green) is 240 and exhaust (orange) is 248 right??? What effect will swapping them have??
93 240sx SE Fastback: Intake, Cams, hi-flow Cat, strut bars, Megan Coilovers
click on car name for more pictures.My drifting movie.
http://forums.nicoclub.com/zerothread?id=216834
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seanman
Offline
334 posts
1989 Nissan 240sx
Redwood city Ca
8-14-2006
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that would probably mess your **** up considering the intake cam is usually earlly to allow intake flow to push out the excess exhaust. is it not possible to look in a chilton for all the cam timing info and what not? and another question, do you have to worry about your pistons slamming into your valves if your timing becomes off?
im in your your garage stealing your wheelz 
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ka24dave
Offline
64 posts
91 240sx coupe.
Lithia Fl
10-20-2006
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| « Re: (seanman) | 5:02 PM 11/9/2006 |
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| Quote, originally posted by seanman » | | that would probably mess your **** up considering the intake cam is usually earlly to allow intake flow to push out the excess exhaust. is it not possible to look in a chilton for all the cam timing info and what not? and another question, do you have to worry about your pistons slamming into your valves if your timing becomes off? |
ouch. 
Speed thru Lightweight. 91 Coupe Redtop Sr.
......all you need to know 
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dkdeleon68
Offline
203 posts
1991 240
ft. worth texas
10-10-2004
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| « Re: (ka24dave) | 6:47 AM 3/21/2007 |
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To answer the question about how to tell which cam is intake and which is exhaust, If you look at the cams they both have a metal dowel pin to keep the sprocket from spinning, the dowel lines up with the first lobe on the intake cam. see the pic below. 
Modified by dkdeleon68 at 7:08 AM 3/21/2007
SECOND PLACE IS JUST A NICE WAY OF CALLING YOU THE FIRST LOSER!
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Chezedik
...and then there were three.
Offline
4709 posts
1991 Nissan 240sx
Overland Park KS
12-17-2002
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Would having the cams in the wrong position cause low vacuum? That is, if you have the exhaust in the intake spot, and vice versa, would your overlap be high enough to cause a vacuum leak?
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dkdeleon68
Offline
203 posts
1991 240
ft. worth texas
10-10-2004
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| « Re: (Chezedik) | 10:24 AM 4/2/2007 |
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you would bend valves.
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Chezedik
...and then there were three.
Offline
4709 posts
1991 Nissan 240sx
Overland Park KS
12-17-2002
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Not if they were set opposite of each other at TDC. The timing is correct, but the cams may be in the wrong place. That would not bend valves but would it cause low vacuum?
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neogeoss4
Offline
3 posts
1991 Nissan 240SX Hatchback Nismo Edition
Jax FL
4-8-2007
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| « Re: (Chezedik) | 8:18 AM 4/8/2007 |
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If you look closely at the Cams, because im stuck doing this job too, mines werent colored so i had to figure out on my own, lucky us when we first installed them wrong and we ran the engine it didnt bend a valve, but if you clean the cams and look closely they are numbered, 1 for intake and 2 for exhaust. also be careful when taking out the cams, it needs to be a rather delicate process.
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Chezedik
...and then there were three.
Offline
4709 posts
1991 Nissan 240sx
Overland Park KS
12-17-2002
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No, turns out I am good, and found my problem. The cams are in correctly, but the valve shim clearance still is not correct. This explains why my vacuum reading was oscillating. So I am hand grinding them, and clearancing them that way.
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neogeoss4
Offline
3 posts
1991 Nissan 240SX Hatchback Nismo Edition
Jax FL
4-8-2007
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| « Rebuilt head, piston rings replaced, hand cleaned injectors... | 6:59 AM 4/27/2007 |
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i got my head rebuilt, piston rings replaced, hand cleaned fuel injectors, we put it all back together me and my boys and we cant manage to stabilize the engine... it cranks but it shakes and wont stay on... well it's been a few days and its always the same response, the timing is adjusted perfectly to jimwolf specs, but when we crank it and try to adjust the distributor timing, the engine is too unstable, we hafto give it a lot of acceleration just in order to keep it running @ 700 RPM... i REALLY need some help ... please Silly SR20... Turbos are for KA's!
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drEameRvaJ
Offline
396 posts
1997 Nissan 240SX SE
Chesnee SC
1-23-2005
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| « Re: Rebuilt head, piston rings replaced, hand cleaned injectors... (neogeoss4) | 11:30 PM 5/21/2007 |
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http://jimwolftechnology.com/w...E.PDFIs this article for S13 cams in a S13? Or is it for S13 cams in a S14? What's the best combo of S13 cam's to put in a KA-T S14 head? Let me know. THANKS!
Kouki. Love.
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oneline180
Offline
60 posts
93 RMS13
katy tx
7-9-2004
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| « Re: (seanman) | 1:47 AM 5/24/2007 |
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| Quote, originally posted by seanman » | | that would probably mess your **** up considering the intake cam is usually earlly to allow intake flow to push out the excess exhaust. is it not possible to look in a chilton for all the cam timing info and what not? and another question, do you have to worry about your pistons slamming into your valves if your timing becomes off? |
actually all you have to do is set #1 to TDC and point the cams away from each other. thats how i have had mine for over a year and the thing still pulls strong, no bent valves or nothing. besides, if you think about it... to swap one cam for the other side of the motor and have it run good then it makes sense that the opposite will work as well.
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Kaze
Offline
362 posts
Anime/Sports/Poetry/sleep
CA
3-21-2004
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Hey......im so frikin confused LOL......ive searched trust me, read this whole thread....my Intake cam is GREEN and has a small I and the Exhaust is Orange and has a small E (so its no mith...they are engraved dont belive me i will take pics)I just want to know if runing both Exhaust cams on a 93 would cause any gains? Please anyone that has done this let me know!
Thanks
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93HATCH240
Offline
629 posts
1993 NISSAN 240SX HATCH
SHIRLEY NEW YORK
5-17-2006
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| « Re: (Kaze) | 9:48 AM 6/18/2007 |
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I have a 96 ka in my 93 chassis. I have a set of spare s13 cams. I want to use the s13 exhaust cam(248) as an intake cam. All thats needed is to rotate 4 teeth counter clockwise? Correct?
1993 240sx-Super hicas-SOLD 10-4-07
Currently- 2002 Nissan Maxima
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rn240sx
Offline
871 posts
240sx with ka turbo
Orlando FL
1-5-2004
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| « Re: (kaje36) | 6:44 PM 1/5/2008 |
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| Quote, originally posted by kaje36 » |  thats got a s13 exhaust cam rotated to work on the intake, its off by 3 pins on the chain, the dot on the gear should be closer to the top. 
and there you can see the cam position.... and a few of my goodies :D |
What happened to the pics..??
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Driftnoob
Offline
32 posts
S13 240sx
Philadelphia PA
3-2-2007
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yeah mines was of by 5 dgr..... and my headers was red hot in 3 mins. !!!!!!!!!!!!!!!
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pflicht
Krylon King
Offline
2488 posts
1991 Nissan 240sx
Andover KS
3-11-2007
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| « Re: (rn240sx) | 2:17 PM 7/15/2008 |
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| Quote, originally posted by rn240sx » |
What happened to the pics..?? |
Project: Kontrollverlust
| Quote, originally posted by The_Chosen_One » |
I hope to god you mean I made your decision hard and not your willy wonka. |
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Speckid14
Offline
85 posts
2002 SE-R Spec V, 1995 240sx, 1993 240sx Coupe
Olathe KS
9-26-2007
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| « Re: (neogeoss4) | 3:55 PM 9/11/2008 |
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Sorry for the thread revival| Quote, originally posted by neogeoss4 » | | If you look closely at the Cams, because im stuck doing this job too, mines werent colored so i had to figure out on my own, lucky us when we first installed them wrong and we ran the engine it didnt bend a valve, but if you clean the cams and look closely they are numbered, 1 for intake and 2 for exhaust. also be careful when taking out the cams, it needs to be a rather delicate process. |
THIS IS FALSE! I'm going to put a rest to which cam is Intake and which is Exhaust. vvvv Look at my cam pictures below vvvv
This is my EXHAUST cam which clearly has a 1 right above the giant "E" making the above statement false that the 1 is for and intake. 
Now here is 2 pictures of my INTAKE Cam: 
This is the other side of the same cam showing a giant I. (Look closely)
 As u can see the about quote is false however, there are instances when sometimes the about quote is true making deciding which cam is intake and exhaust a confusing one. Hence why everyone is confused like no other. The absolute best way to decide which cam is which, should be decided by the dowel pins on the front side of the camshaft, where the cam sprocket is located. If the dowel pin lines up with the 1st cam lobe it is the INTAKE cam.
If the dowel pin does not line up with the 1st lobe it is the EXHAUST cam.
Here is the best diagram to go by. (as previously mentioned):
 Kudo's to dkdeleon68
Hope this helps you guys out!!!
Speckid14 
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f2xphantom
Offline
9 posts
1992 240sx hatchback (sileighty)
Long Beach CA
9-30-2008
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| « Re: (kaje36) | 9:12 PM 9/30/2008 |
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hey dus anyone know if putting s14 camshafts on my 1992 s13 will change anything like hp or anything? i have both s14 cams....but i dont know if they are worth installing.
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rn240sx
Offline
871 posts
240sx with ka turbo
Orlando FL
1-5-2004
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| « Re: (f2xphantom) | 7:50 AM 10/1/2008 |
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| Quote, originally posted by f2xphantom » | | hey dus anyone know if putting s14 camshafts on my 1992 s13 will change anything like hp or anything? i have both s14 cams....but i dont know if they are worth installing. |
yes. the S14's use 232 / 232 cams and S13's depending on yr use 240 / 248
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da1dj6oy4236
Offline
1 posts
nissan 240sx
hollywood Fl
10-13-2008
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| « Re: (DGA) | 4:10 PM 10/13/2008 |
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thanks for the website now i kan finally driva ma baby again thnks a whole bunch man u juz saved me from goin wit out my kar for god knos how long thnks again nd b safe 240S ARE DA SHYT 
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78lilred
Offline
2 posts
1992 coupe
Lincoln Nebraska
8-17-2008
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GUYS PLEASE HELP ME!!!!!Dropped the sprocket when doing an exhaust cam install on the intake side. I really need pictures or someone to tell me exactly how the dots should line up and how the lobes should look with #1 at TDC. So if someone could rehost those pictures that were on the first page that would be nice. With a 248/248 setup will the lobes be pointing at the valve cover mating surface like stock?    Thanks.
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Priyank
Offline
1 posts
1992 Nissan 240sx SE Convertible
Northfield Ohio
11-11-2008
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| « Re: (chandler) | 6:33 PM 2/27/2009 |
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the one with the 5 53F is intake and 2 53F is exhaust. in other words the one with the green mark is intake, and other one is marked with orange which is exhaust 
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onedumubm24
Offline
3 posts
I have a 1989, a 1990 and 1991 Nissan 240sx.
Wellington CO
1-26-2009
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| « Re: S13 KA24DE Cam Alignment (240sxOwner) | 10:53 PM 9/17/2009 |
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well this is slightly relevant to this post
im about to tear my head off because my friend decided to hit the rev limiter tooo many times and blew my head gasket and my radiator. anyone wanna give me step by step on the best way to do this? ive never had to mess with my timing so im kinda lost on this 
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DMan II-40
Offline
992 posts
1995 240SX SE
East Bay California
10-22-2006
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| « Re: (Speckid14) | 11:49 AM 10/14/2009 |
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| Quote, originally posted by Speckid14 » | | Sorry for the thread revival THIS IS FALSE! I'm going to put a rest to which cam is Intake and which is Exhaust. vvvv Look at my cam pictures below vvvv
This is my EXHAUST cam which clearly has a 1 right above the giant "E" making the above statement false that the 1 is for and intake.
Now here is 2 pictures of my INTAKE Cam:
This is the other side of the same cam showing a giant I. (Look closely)
As u can see the about quote is false however, there are instances when sometimes the about quote is true making deciding which cam is intake and exhaust a confusing one. Hence why everyone is confused like no other. The absolute best way to decide which cam is which, should be decided by the dowel pins on the front side of the camshaft, where the cam sprocket is located. If the dowel pin lines up with the 1st cam lobe it is the INTAKE cam.
If the dowel pin does not line up with the 1st lobe it is the EXHAUST cam.
Here is the best diagram to go by. (as previously mentioned):
Kudo's to dkdeleon68
Hope this helps you guys out!!!
Speckid14 |
Tread bump again. But what year did these cams come from so that way I know the duration? (I see you have both and S13 and S14)
Currently: VLSD, 3" Apex'i exhaust, Apex'i filter, 17" 350z wheels, Aluminum Subframe Bushings, Battery Relocation
To Do: Tint, power brace, 248/232 Cam swap, Koni Yellow + GC sleevs, Zenki Side skirt with Nismo 270r Bumper, and paint.
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