Cam HELP!!!!!! Please

Post by **Florida240sx** » Sun Dec 10, 2006 8:09 am

Just took my valve cover off and found this...Think I've found my issue...I hate cams and need to know what i should do. Intake is off correct? So I need to loosen intake cam bolt turn sprocket once and turn cam to correct position and then tighten?

Post by **DRFT(kinda)** » Sun Dec 10, 2006 8:17 am

Actually, i dont think it is off. but i could be wrong.

Post by **Florida240sx** » Sun Dec 10, 2006 8:21 am

I hat cams, but this has to be the problem it might just be off a couple degrees... Need a cam install expert's opinion on what to do.

Post by **coolbone28** » Sun Dec 10, 2006 8:28 am

ya try and take a pic of your exhaust cam too. i actually think that one is too low.

Post by **Florida240sx** » Sun Dec 10, 2006 8:47 am

There is.. one of intake one of exhaust...

Post by **coolbone28** » Sun Dec 10, 2006 9:44 am

well from the angle of the pic i would say its a little too low. and your intake side might be just slightly too high, but the main thing is they are not symmetrical. when I was setting my timing the cams would come to rest at the right spot basically. and when you turn them they would have resistance, but wanted to spring back to their resting spot. just try lowering your intake a hair and then matching your exh. side to that.

Post by **nvrplzd240** » Sun Dec 10, 2006 10:15 am

swap to an SOHC

only 1 cam to hate

Post by **Florida240sx** » Sun Dec 10, 2006 11:21 am

nvrplzd240 wrote:swap to an SOHC

only 1 cam to hate

Will someone with helpful information respond.Do I need to take the sprocket off? Just loosen the cam bolts and rotate the cams a bit and then retighten? What should I do?

Post by **TheOne** » Sun Dec 10, 2006 11:27 am

tho i believe you couldn't have swapped intake for exhaust cam, i think those cams seem fine?(so long as the big sproket isn't off with the crank, the sproket that goes on the head, have you checked that?, if all the alignin dots are on their place with the timing chain, then you should be ok unless they're switched in the V2 cams, which i doubt)

Post by **coolbone28** » Sun Dec 10, 2006 11:53 am

to adjust them put the engine at TDC. take out the cam sprocket bolt and only do 1 at a time so as to make sure that the chain doesnt move on the idler sprocket (lower one). take off the sprocket and turn the cam with a wrench. then just put the chain on the sprocket and then put them on the cam. it can be a little tricky becasue there should be tension and of course there is not alot of slack to play wiht. so once you get 1 set then do the other.

Post by **coolbone28** » Sun Dec 10, 2006 12:02 pm

http://jimwolftechnology.com/w...E.PDF

2nd page has a good example of the positioning
Modified by coolbone28 at 2:20 PM 12/10/2006

Post by **nissanfanatic** » Sun Dec 10, 2006 12:59 pm

No matter what, you are gonna have to take it all apart to retime the engine... Unless you take a lot of time turning the engine over until everything is lined up perfectly.. I would just retime it... It won't be too bad..

Post by **Florida240sx** » Sun Dec 10, 2006 1:41 pm

I need to get a pulley puller......Just rotated the intake sprocket back 1 and lined the cam up.Car pulls nicely in top end now BUT I have absolutely no power down low... Vac is at 10-12. As soon as I hit around 4000rpms the car picks itself up goes and pulls to redline.Could this just be a re-adjustment of the cams?

Post by **KATwo40** » Sun Dec 10, 2006 1:41 pm

Ok, here's the deal.

First off, you don't have to take the whole set apart. Trust me on this, and follow my instructions, and it all works out great.

Your intake cam is off, that's for sure, by one tooth.

Ok, here's the easiest way to do it.

1. Make 100% sure that #1 is at TDC. Use the timing marks on the crank pulley to do this.2. Lock the upper tensioner back so that it's off the upper chain (use a push pin, thumb tack, paper clip, etc.).3. Remove the intake cam gear bolt.4. Very carefully, pull the intake cam gear off the cam, but not completely out of the chain. 5. Hold the chain with one hand so that you can rotate the intake cam gear COUNTERCLOCKWISE one tooth.6. Slide the gear back onto the cam and install the bolt.7. Check to make sure that the chain has slack only on the passenger side, near the tensioner. The upper portion and the driver side portion should be fairly tight.8. Pop the tensioner pin out and let it snap tight against the chain.

There ya' go, buddy. I just went through this on two different cars and I got it all straightened out this way, no problem.

Post by **KATwo40** » Sun Dec 10, 2006 1:43 pm

Well, I see that my post was too late.

Sounds like your ignition timing is off. Check it.

Post by **Florida240sx** » Sun Dec 10, 2006 1:44 pm

I had to turn the sprocket once because of the cam dowel pin.... Turned the cam until it lined up..... However when I was tightening the cam bakc up there was slack inbetween the cams from pressure. So need to get that fixed... Read my above post for current issueSo you think then my base timing is messed up now? I have to get my timing gun tomorrow from work.

Post by **KATwo40** » Sun Dec 10, 2006 2:04 pm

If you had the front cover off, it's possible, since the distributor was out.

Either that, or the pair of cams is off from the crank index. Put the crank at TDC via the marks on the pulley (second mark from the left) and recheck the cam index to be certain.

Post by **nissanfanatic** » Sun Dec 10, 2006 2:34 pm

Just use the FSM...

BTW, it looks like the dimples on the cam sprockets are lined up with the gold links..

Post by **Florida240sx** » Sun Dec 10, 2006 6:05 pm

nissanfanatic wrote:Just use the FSM...

BTW, it looks like the dimples on the cam sprockets are lined up with the gold links..

They are were should they be?JWT site confuses me.I can't find any FSM's been searching for a while. And everytime I try to download one online the link is bad.

Post by **crzycav86** » Sun Dec 10, 2006 6:17 pm

nissanfanatic wrote:Just use the FSM...

BTW, it looks like the dimples on the cam sprockets are lined up with the gold links..

That's what I was thinking, but the cam lobes look like they're oriented the wrong way relative to each other(at least I think they are)... so I'm just confused.

I'm not sure... but maybe the lower chain is the one that skipped a tooth.

Post by **Florida240sx** » Sun Dec 10, 2006 6:28 pm

I've rotated the intake so now the cams face opposite. I'm going to start a new thread tomorrow.* Current issue is I have no low end power at all. Vaccum is -12.*

Post by **PapaSmurf2k3** » Mon Dec 11, 2006 6:50 am

The cam lobes on cyl 1 at top dead center should face opposite each other, paralell to the ground, at least that is what I got told when I was doing mine, so by your first picture it looks like your intake cam was off by 1 or 2 teeth. Its such a ***** if you dont do it all at the same time and use the marks on the chains, cos then the marks are useless and just there to piss you off.

Post by **gaehrings13** » Mon Dec 11, 2006 8:04 am

I try my best to use the marks on the chain, and make sure you tdc is set from that second mark like katwo said. Make sure your rotor and all you wires are good on your distributor.

Post by **Florida240sx** » Mon Dec 11, 2006 4:06 pm

Process of cam fix #2.... I didn't even touch the cams... I took pics though... I'll find out in about an hour, if the issue has been fixed...

Post by **Florida240sx** » Mon Dec 11, 2006 4:56 pm

Problem not fixed new thread to be up.

Post by **sunnys14** » Tue Dec 12, 2006 10:41 am

can u take pics from a top view so we can see where the front lobes are point @ TDC?

Post by **sunnys14** » Tue Dec 12, 2006 10:43 am

if u really want to make sure if your cams are right, do what i did. i just took off the front upper timing cover (additional 8-10 bolts, another 10 mins of your time) and RETIME the complete upper chain when @ TDC. realign the colored mark from the upperchain with the main sprocket notch. then retime the cams with their appropriate marks. trust me, it only takes another 15 minutes just to MAKE SURE you have your cams right.

Cam HELP!!!!!! Please

Cam HELP!!!!!! Please

Re: (nvrplzd240)

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