sorry for posting on multiple forums but i really need an answer..Thanks
Post Title:
Posted by: kaje36 at 11:29 AM 5/2/2004
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
Post Title:
Posted by: BadMojo at 11:29 AM 5/2/2004
| 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 |
Forgive me if I'm wrong, but the key is that the cam lobes are pointing directly away from each other when cylinder #1 is at TDC.
There should really be a sticky with photos, since this keeps coming up. I'd hate to see someone end up with ****ed up valves.
BTW, what kind of header is that? It sure is purty.
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Posted by: LiU at 11:29 AM 5/2/2004
http://jimwolftechnology.com/w...E.PDF
Post Title:
Posted by: E Dogg at 11:29 AM 5/2/2004
BadMojo: its a SR SSchrome manifold with a KA, and T3 flange on it. Aceinhole was the one who figured out it could be done, and both him and I did this in the same weekend, I like his setup a little better, but mine fits the downpipe alot better. SSchrome just released there KA mani that is the same thing. so its not alot cheaper for thoes peaple wanting a bottem mount turbo on there KA
Oh ya.. FYI thats a s13 head and all the rest is s14
Post Title:
Posted by: E Dogg at 11:29 AM 5/2/2004
To see if your cams are off you can rotate your engine to #1 cylinder TDC, take off your valve cover and see where the lobes of the intake and exhaust cam are pointing on the #1 cylinder. Both of them should be pointing away from the center of the engine. I will try to dig up some pictures from when I pieced my engine together. I think that I have some good photos of the stripped engine that has its chains and cams in at #1 cylinder TDC.
Post Title:
Posted by: DGA at 11:29 AM 5/2/2004
edit: could a bad knock sensor do this?
Post Title:
Posted by: Thee 240sx Owner at 11:29 AM 5/2/2004
| Quote, originally posted by LiU » |
| hey your cams are orange for intake and green for exhaust... same as mine... but every1 told us that green is for intake andorange is for exhaust... an we ended up with bent valves... |
You are right except the cams are reversed on the s14's so be careful, don't ask how I know.
Post Title:
Posted by: klattr1 at 10:56 PM 9/28/2004
| Quote, originally posted by chandler » |
| hey guys, man I feel like an impatient a55 hat, I took the cams out of my spare head, (s13) and now I dont know whice is intake and which is exhaust one has a 5 and the other is a 2 any help would be greatly appreciated. |
oh yeah and since i have installed mine, the gas mileage has went down
Post Title:
Posted by: jmhalder at 11:06 AM 3/22/2005
| Quote, originally posted by jmhalder » |
| how much was your gas mileage effected, is it still aproximatly over 20mpg |
yeha its still over 20mpg, 2 weeks in a row it was 19.xxmpg. now its back up to 23. Id say the average is around 21 city, 26 Hwy
Post Title:
Posted by: chandler at 7:18 AM 4/10/2005
the cams at TDC on cyl #1 with the old '93 cams installed don't point exactly outwards like the other ones did, but point slightly more at an upward angle from the center. this is the only way to angle them so that the valves are all closed. i think that with this setup the intake cam is slightly advanced, and the exhaust cam is slightly retarted by a tooth on the cam gears or a few degrees. with the #1 cyl. lobes pointing out like they should be at TDC, the #3 cyl intake valves and #2 cyl exhaust valves are depressed slightly. i wish i had a picture of the cams the way they are now. btw both cam sprockets are stock, non adjustable ones. i just need to confirm that the cams are off timing...and what about those valves being pushed down slightly? is that a problem or should i focus on putting #1 cyl cams at TDC?
AAAH! HELP!
Post Title: Re: (Shift__BODOM)
Posted by: Shift__BODOM at 12:53 AM 5/8/2005
| Quote, originally posted by Shift__BODOM » |
| hmm, i just swapped my old '93 cams into my new '96 motor, and i've run across a few problems. that image is my '96 cams before i attacked them. i dont have an after pic, but i can tell you that the '93 cams don't look exactly like that... the cams at TDC on cyl #1 with the old '93 cams installed don't point exactly outwards like the other ones did, but point slightly more at an upward angle from the center. this is the only way to angle them so that the valves are all closed. i think that with this setup the intake cam is slightly advanced, and the exhaust cam is slightly retarted by a tooth on the cam gears or a few degrees. with the #1 cyl. lobes pointing out like they should be at TDC, the #3 cyl intake valves and #2 cyl exhaust valves are depressed slightly. i wish i had a picture of the cams the way they are now. btw both cam sprockets are stock, non adjustable ones. i just need to confirm that the cams are off timing...and what about those valves being pushed down slightly? is that a problem or should i focus on putting #1 cyl cams at TDC? AAAH! HELP! |
I think the LCA is just different between the two sets of cams. If compression checks out then you're fine.
Post Title: Re: (InsanityInc)
Posted by: s13sr20chris at 4:14 PM 8/20/2005
DONT GO BY THE COLOR OF THE PAINT ON THE CAMS
i have just confirmed that some s13 ka24de's have orange on the intake and green on the exhaust while some others have it exactly opposite. i know this because i just rebuilt 2 heads side by side. they were both from 91 s13's and they were exact opposites. i even installed them both ways and was stumped as to why the lobes were not pointed the right way. then i just swapped them around and found this out.
Post Title: Re: (s13sr20chris)
Posted by: InsanityInc at 2:33 PM 9/21/2005
| Quote, originally posted by s13sr20chris » |
| IMPORTANT DONT GO BY THE COLOR OF THE PAINT ON THE CAMS i have just confirmed that some s13 ka24de's have orange on the intake and green on the exhaust while some others have it exactly opposite. i know this because i just rebuilt 2 heads side by side. they were both from 91 s13's and they were exact opposites. i even installed them both ways and was stumped as to why the lobes were not pointed the right way. then i just swapped them around and found this out. |
Interesting. If I recall, the cams have a little I and E engraved on them, don't they?
Post Title:
Posted by: oneline180 at 12:09 AM 10/27/2005
| 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.
Post Title: Re: (oneline180)
Posted by: s13sr20chris at 4:05 PM 10/30/2005
| 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.
Post Title: Re: (oneline180)
Posted by: InsanityInc at 8:10 PM 11/13/2005
| 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.
Post Title:
Posted by: Chezedik at 8:03 PM 12/12/2005
| 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.
Post Title:
Posted by: rsmithdrift at 3:58 PM 6/24/2006
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??
Post Title:
Posted by: seanman at 12:31 AM 8/15/2006
| 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. 
Post Title: Re: (ka24dave)
Posted by: dkdeleon68 at 6:47 AM 3/21/2007
Silly SR20... Turbos are for KA's!
Post Title: Re: Rebuilt head, piston rings replaced, hand cleaned injectors... (neogeoss4)
Posted by: drEameRvaJ at 11:30 PM 5/21/2007
Is 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!
Post Title: Re: (seanman)
Posted by: oneline180 at 1:47 AM 5/24/2007
| 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.
Post Title:
Posted by: Kaze at 5:24 PM 5/26/2007
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
Post Title: Re: (Kaze)
Posted by: 93HATCH240 at 9:48 AM 6/18/2007
| 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 |
| Quote, originally posted by rn240sx » |
What happened to the pics..?? |
| 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 
Post Title: Re: (kaje36)
Posted by: f2xphantom at 9:12 PM 9/30/2008
| 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. |
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.
Post Title: Re: (chandler)
Posted by: Priyank at 6:33 PM 2/27/2009
| 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
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. Kudo's to dkdeleon68 |
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)
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