Timing help. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Dirty Habit · 05-03-2008, 07:10 PM

Ok, I've read about a billion threads on this, and each one seems to say something different. I noted that my cams looked off the other day when I pulled my valve cover. This engine has been rebuilt and it will be the first time I fire it. Before I started it up I wanted to make sure everything was right on it and I got to this:

Everything should be at TDC. As far as I can tell, Ive cranked it and this point seems to be the highest on the first cylinder.
Does this look right to you? Does not look right to me. Shouldn't the markings be at 10 and 1 or something? Not 8 and three.
I'm not a mechanic just a DIY'er trying to learn and Ive read the fsm and everything I can on here.
Ideas?
Any help is appreciated.

Edit. Ok, I may be a retard. I think I found out the problem. Still throw Ideas out there though, cause im still not 100%.

flip3d · 05-03-2008, 07:26 PM

Are the cam lobes facing outwards?

pete240 · 05-03-2008, 07:35 PM

Here is what mine looked like when I did it.

Sr20det>Ka24de · 05-03-2008, 07:36 PM

dont ask me i am drunk! go ahead flame me f*cker

s14coastie · 05-03-2008, 07:49 PM

hERE YA GO BUDDY!!!!!!!!!!!
http://jimwolftechnology.com/wolfpdf...R%20KA24DE.PDF

Dirty Habit · 05-03-2008, 07:51 PM

The lobes are facing 8 and 4. I tried to crank it around again to see what it does and nothings moving. Im right at the tdc mark on the main pulley. What the hell.

KiLLeR2001 · 05-03-2008, 07:54 PM

Don't know how the timing is for the KA's but on SR's the cam key for the intake needs to be at 10 and the exhaust cam key needs to be at 12 at TDC on the compression stroke. (#1 lobes facing outward)

Dirty Habit · 05-03-2008, 07:55 PM

Quote:

Originally Posted by s14coastie

hERE YA GO BUDDY!!!!!!!!!!!
http://jimwolftechnology.com/wolfpdf/CAM%20INSTALL%20INST%20FOR%20KA24DE.PDF

I really was hoping it wouldnt come to that.

Plus I have a head full of wild turkey right now. This is gonna be fun.

Dirty Habit · 05-03-2008, 08:34 PM

I just noticed that Ive done a few full rotations of the engine and the intake cam lobe has not moved.

Dirty Habit · 05-03-2008, 08:51 PM

Intake lobe at about 8 still. Exhaust at 4. ARGH.

blu808 · 05-03-2008, 09:02 PM

so you can turn the crank pulley and the cam doesn't move?

sounds like a broken lower timing chain.

Dirty Habit · 05-03-2008, 09:08 PM

Quote:

Originally Posted by blu808

so you can turn the crank pulley and the cam doesn't move?

sounds like a broken lower timing chain.

Yeah, the intake cam is not going anywhere. The sprocket was moving, but the cam just chilled in the same spot the whole time.

awesomenick · 05-03-2008, 09:11 PM

Only the intake cam isn't moving? Or the exhaust cam isn't either?

If the intake cam isn't moving, but the exhaust cam is... That's weird, and it probably sucks to fix.

Dirty Habit · 05-03-2008, 09:21 PM

Quote:

Originally Posted by awesomenick

Only the intake cam isn't moving? Or the exhaust cam isn't either?

If the intake cam isn't moving, but the exhaust cam is... That's weird, and it probably sucks to fix.

Yeah, exhaust is moving great, intake is just stuck there. Fuck.

So I just realized something that might affect this. Ive been having transmission problems, and it may be stuck in 1st or 2nd gear. Would this affect the intake lobes movement at all?

The cars been in neutral, so I thought.

And another discovery, I think the intake cam is off an s14 ka24de.

I just got this thing off a guy. Probably should have asked for more specifics before I ripped into it.

Dirty Habit · 05-03-2008, 10:02 PM

I think Im gonna go back through and double check the torque on everything, perhaps its bolted down to tight?

Or the head is super warped?

awesomenick · 05-03-2008, 10:15 PM

Maybe your cam is stripped, or the cam gear is or something. The timing chain turns both cam gears together. Both cams should turn.

Dirty Habit · 05-03-2008, 10:27 PM

Im gonna finish this in the morning when Im not full of bourbon.

*kingkilburn* · 05-03-2008, 11:20 PM

Can any one interested help me out with a timing problem in my thread?

http://www.zilvia.net/f/showthread.php?t=190594

Dirty Habit · 05-04-2008, 07:52 AM

Quote:

Originally Posted by kingkilburn

Can any one interested help me out with a timing problem in my thread?

http://www.zilvia.net/f/showthread.php?t=190594

Lol. Thanks for the bump.

*kingkilburn* · 05-05-2008, 12:26 AM

LOL. Sorry about that.

It sounds to me like the dowel came out of your cam shaft.

Is that a better bump?

Dirty Habit · 05-06-2008, 06:40 AM

All good. Last bump here. Anyone have anymore ideas?

just1pepsi · 05-06-2008, 08:03 AM

no idea other than whats already been said as to why the intake cam isnt turning. You should be able to time it by making sure the 1st cylinder is at tdc and the intake/exhaust valves are all closed at the same time though. -well, not really now that I think about it

projectRDM · 05-06-2008, 09:35 AM

You could have sheared the end of the cam off, just behind the gear. I've seen that before. Take the gear off and inspect the cam.

05-03-2008, 07:36 PM	#4
Sr20det>Ka24de Leaky Injector Join Date: Mar 2008 Location: Pennsylvania Age: 40 Posts: 72 Trader Rating: (0) Feedback Score: 0 reviews	dont ask me i am drunk! go ahead flame me f*cker __________________ minitrucker - 240 addict, now how to combine them?

05-03-2008, 07:51 PM	#6
Dirty Habit Nissanaholic! Join Date: May 2007 Location: Ann Arbor, MI Posts: 2,069 Trader Rating: (3) Rides Gallery: Dirty Habit Feedback Score: 3 reviews	The lobes are facing 8 and 4. I tried to crank it around again to see what it does and nothings moving. Im right at the tdc mark on the main pulley. What the hell. __________________ 1982 280zx Turbo

05-03-2008, 07:54 PM	#7
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	Don't know how the timing is for the KA's but on SR's the cam key for the intake needs to be at 10 and the exhaust cam key needs to be at 12 at TDC on the compression stroke. (#1 lobes facing outward) __________________

05-03-2008, 08:34 PM	#9
Dirty Habit Nissanaholic! Join Date: May 2007 Location: Ann Arbor, MI Posts: 2,069 Trader Rating: (3) Rides Gallery: Dirty Habit Feedback Score: 3 reviews	I just noticed that Ive done a few full rotations of the engine and the intake cam lobe has not moved. __________________ 1982 280zx Turbo

05-03-2008, 08:51 PM	#10
Dirty Habit Nissanaholic! Join Date: May 2007 Location: Ann Arbor, MI Posts: 2,069 Trader Rating: (3) Rides Gallery: Dirty Habit Feedback Score: 3 reviews	Intake lobe at about 8 still. Exhaust at 4. ARGH. __________________ 1982 280zx Turbo

05-03-2008, 07:10 PM	#1
Dirty Habit Nissanaholic! Join Date: May 2007 Location: Ann Arbor, MI Posts: 2,069 Trader Rating: (3) Rides Gallery: Dirty Habit Feedback Score: 3 reviews	Timing help. Ok, I've read about a billion threads on this, and each one seems to say something different. I noted that my cams looked off the other day when I pulled my valve cover. This engine has been rebuilt and it will be the first time I fire it. Before I started it up I wanted to make sure everything was right on it and I got to this: Everything should be at TDC. As far as I can tell, Ive cranked it and this point seems to be the highest on the first cylinder. Does this look right to you? Does not look right to me. Shouldn't the markings be at 10 and 1 or something? Not 8 and three. I'm not a mechanic just a DIY'er trying to learn and Ive read the fsm and everything I can on here. Ideas? Any help is appreciated. Edit. Ok, I may be a retard. I think I found out the problem. Still throw Ideas out there though, cause im still not 100%. __________________ 1982 280zx Turbo

05-03-2008, 07:26 PM	#2
flip3d Zilvia FREAK! Join Date: Feb 2008 Location: Ft Lauderdale, FL Age: 37 Posts: 1,473 Trader Rating: (1) Feedback Score: 1 reviews	Are the cam lobes facing outwards?

05-03-2008, 07:35 PM	#3
pete240 Leaky Injector Join Date: Mar 2007 Location: SATX Age: 37 Posts: 124 Trader Rating: (4) Feedback Score: 4 reviews	Here is what mine looked like when I did it.

05-03-2008, 07:49 PM	#5
s14coastie Zilvia Member Join Date: May 2007 Location: Hampton roads, VA Posts: 153 Trader Rating: (3) Feedback Score: 3 reviews	hERE YA GO BUDDY!!!!!!!!!!! http://jimwolftechnology.com/wolfpdf...R%20KA24DE.PDF

05-03-2008, 09:02 PM	#11
blu808 Post Whore! Join Date: Dec 2002 Location: Campbell, Ca Age: 42 Posts: 5,010 Trader Rating: (3) Feedback Score: 3 reviews	so you can turn the crank pulley and the cam doesn't move? sounds like a broken lower timing chain. __________________

05-03-2008, 09:11 PM	#13
awesomenick Zilvia Addict Join Date: May 2006 Location: UT Age: 36 Posts: 945 Trader Rating: (33) Feedback Score: 33 reviews	Only the intake cam isn't moving? Or the exhaust cam isn't either? If the intake cam isn't moving, but the exhaust cam is... That's weird, and it probably sucks to fix.

05-03-2008, 10:02 PM	#15
Dirty Habit Nissanaholic! Join Date: May 2007 Location: Ann Arbor, MI Posts: 2,069 Trader Rating: (3) Rides Gallery: Dirty Habit Feedback Score: 3 reviews	I think Im gonna go back through and double check the torque on everything, perhaps its bolted down to tight? Or the head is super warped? __________________ 1982 280zx Turbo

05-03-2008, 10:15 PM	#16
awesomenick Zilvia Addict Join Date: May 2006 Location: UT Age: 36 Posts: 945 Trader Rating: (33) Feedback Score: 33 reviews	Maybe your cam is stripped, or the cam gear is or something. The timing chain turns both cam gears together. Both cams should turn.

05-03-2008, 10:27 PM	#17
Dirty Habit Nissanaholic! Join Date: May 2007 Location: Ann Arbor, MI Posts: 2,069 Trader Rating: (3) Rides Gallery: Dirty Habit Feedback Score: 3 reviews	Im gonna finish this in the morning when Im not full of bourbon. __________________ 1982 280zx Turbo

05-03-2008, 11:20 PM	#18
kingkilburn Philosopher King Join Date: Aug 2006 Location: FresYes Posts: 3,042 Trader Rating: (0) Feedback Score: 0 reviews	Can any one interested help me out with a timing problem in my thread? http://www.zilvia.net/f/showthread.php?t=190594 __________________ G O L D E N B E A R R E P U B L I C

05-05-2008, 12:26 AM	#20
kingkilburn Philosopher King Join Date: Aug 2006 Location: FresYes Posts: 3,042 Trader Rating: (0) Feedback Score: 0 reviews	LOL. Sorry about that. It sounds to me like the dowel came out of your cam shaft. Is that a better bump? __________________ G O L D E N B E A R R E P U B L I C

05-06-2008, 06:40 AM	#21
Dirty Habit Nissanaholic! Join Date: May 2007 Location: Ann Arbor, MI Posts: 2,069 Trader Rating: (3) Rides Gallery: Dirty Habit Feedback Score: 3 reviews	All good. Last bump here. Anyone have anymore ideas? __________________ 1982 280zx Turbo

05-06-2008, 08:03 AM	#22
just1pepsi Zilvia Addict Join Date: Dec 2003 Location: OKC Age: 42 Posts: 657 Trader Rating: (0) Feedback Score: 0 reviews	no idea other than whats already been said as to why the intake cam isnt turning. You should be able to time it by making sure the 1st cylinder is at tdc and the intake/exhaust valves are all closed at the same time though. -well, not really now that I think about it

05-06-2008, 09:35 AM	#23
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	You could have sheared the end of the cam off, just behind the gear. I've seen that before. Take the gear off and inspect the cam. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com