Did I fail at cam install?

[giovanniv]

Alright well I ran into a slight problem. Basically I did not have my engine at the 1st cylinder TDC when I took off my old cams and now I already installed my new delta cams without my engine being at tdc. Will I have problems with my marks on my cams and the crank not being together at TDC? What about the cam angle sensor since i have a 1g 7 bolt and I have the hall type cas?

 

[gingerbredman00]

I'v never done any engine work like that, but I would not trust it..

 

[ramsack]

you need to take your timing belt back off, set your crank to TDC, and line your cams up correctly. you do not want to start the car like this, your valves will most likely smash into the pistons if your cam timing is off.

 

[Indian]

You need to have the dials on the cam gears both at the 12:00 position or your valves will smack the pistons.

 

[seattleshawn]

Pull you cams back out if they are already installed, set your timeing marks on the crank, oil pump, balance shaft if you still have it and set your cams back in with the timing marks as close to lining up as possable, you should be able to get them pretty close. Follow normal timeing belt procedure and you should be ok. Im not sure about the CAS though maby someone will be able to answer that for you. If you try to set the crank timing mark with the cams still in your pistons and valves will meet at some point, thats why you have to pull your cams out.

 

[ramsack]

why does he need to take the cams back out? he just needs to time the timing belt. also, i don't understand what giovanniv is asking about the CAS?

 

[seattleshawn]

why does he need to take the cams back out? he just needs to time the timing belt. also, i don't understand what giovanniv is asking about the CAS?

Cause there is no point where all the valves are closed when the cams are installed, and without everything in time you take a chance of a valve hitting a piston when moving either the crank or cam individualy.

 

[1995gsx20g]

why does he need to take the cams back out? he just needs to time the timing belt. also, i don't understand what giovanniv is asking about the CAS?

no need to take the cams out.
i think hes talking about the sensor being 180 degrees off. if it is you might get misfire codes or you might not but if its running poor it cant hurt flipping it 180 degrees after. its not a big deal.

 

[ramsack]

i thought about it more, and i kind of agree more about the cams now. being longer duration, you should take them off before setting the crank. with stock cams the valves will likely not be open far enough to hit the pistons, but aftermarket cams, i have no clue, and i wouldn't risk smashing valves then. and if you have trouble with the CAS, then you can just take it off and turn the shaft in it 180 degrees after all is said and done.

 

[firefighter]

Just take the belt off. Bring # 1 piston to TDC put cams on cylinder 1 fireering order intake exhaust valves closed (follow haynes manual) line up oil pump, balance shaft, cam shaft install belt wait a little while than rotate engine ending back at TDC than check timming marks again. the reason why waiting is you want the belts to settle and stretch. you don't have to remove your cams the duration has nothing to do with this.

 

[350war]

I would pull the cams back out set crank to TDC realign bs and oil pump marks and reinstall cams. Do not take off the timing belt and turn the engine over with the cams installed you could bend a valve. Doing this now is a lot easier than pulling your head and also a peice of mind knowing your timing is correct. Seattleshawn has it right. This is the same as changeing the timing belt. Even if you had stock cams you could bend the valves turning the engine over out of time. Better safe than sorry.

 

[viperlp01]

Why do that ... I have never had a problem turning the crank while having the the cams set at TDC... This is a joke.. There is no problems with moving all that stuff.. Just be carefull and if feel resistance dont slam it.. Just set the timing with the cams in..

 

[Colt4G63 also]

The only time the pistons can hit valves is when the crank is at TDC or 180 degrees off of TDC. With the pistons halfway down the bore (90 degress from TDC) you'll be safe to spin the cams all you want.

So: 1)Put the crank at 90 degrees BTDC.
2)Set the cams at TDC
3)Advance the crank to TDC
4)Make sure your front balance shaft is lined up
5)Make sure your rear balance shaft is in phase
6)Install your belt

 

[ArticNemesis]

It isn't just piston to valve contact, you can have valve to valve contact as well. Don't remove the cams.

Take the spark plugs out, and turn the crank / cams by hand very gently. If you feel resistance, stop and rotate something else to get it moving.

If you put the crank at 90* off of TDC while you are rotating the camshafts, all the pistons should be low enough to not even worry about touching the pistons. Then just rotate the crank back to TDC after you have the camshafts at their proper spots.

 

[350war]

Sorry for any bad info. Colt and Artics advice make more sense and a lot less work.

 

[viperlp01]

+1 guys.. Lets not make it more complicated then it needs to be ...

 

[TofastForU_99]

Omg. First off if u never installed cams before stay off the thread ## making no sense. This is no rocket science just follow normal timming. Procedures and you will be fine you can adjust the cas later down the road this has nothing to do with duration of the cam like i said. Last night just follow what I said you will be fine.

 

[ramsack]

sorry rude person i have just never owned longer duration cams before and i was just telling him to be safe rather than sorry.

 

[giovanniv]

Ya I made this thread before I talked to you over the phone. I got everything done and working properly. Thanks!