When the PTO is at TDC, where is the flywheel timing mark? Is it at the case split or is it in the 12:00 position where the crank sensor hole is?

 

There is a split in flywheel styles that occurred somewhere in 2012 production. If it does not line up with tdc on the case split re-install the magneto cover, remove the crank angle sensor, and align the hash mark on the flywheel with the center of the crank angle sensor hole.

Nate
Alba Racing

 

Nate called me and told me about the. '12 changes. Started first try. Thanks guys and thanks Nate for the quick call.

 

Sorry to high jack your thread. But I've got a question. When the timing mark is lined up with the crank sensor hole. Should it be exactly center? I'm having a hell of a time getting my timing set. When I have everything together and timed at what I think is right the timing mark is on the far right edge of the hole (if you were standing on the passenger side looking at the stator cover) after I spin the motor by hand a couple times. If I change the timing by one tooth, the mark lines up on the left side of the hole after I spin the motor around a couple times. I've bolted the flywheel bolt to verify that the key way is facing straight up also. So to me it just seems like it's half a tooth off.

 

There are " slices at the rear of the cams make sure that they are parallel w the back of the head, should be able to " slide a flat bar on both, after you have set it make sure you can roll the motor over by hand also make sure you have the correct cam in the correct spot

 

I have the bar in there, the motor spins over no problem, and the right cams r in the right spot. I'm sure I have it right. But thought I would double check.

 

The mark has to be dead center in the sensor hole or you'll be off.

 

Stretched timing chain?

Nate
Alba Racing

 

I faced the same problem and as Nate said the timing chain is off.

 

I figured out my problem. The timing mark does line up in the middle of the hole, the problem I was running into was when I rolled the engine over a couple times by hand when I would get it back to TDC I still had tension pulling on the exhaust cam sprocket. Once I rolled the engine back a bit to remove the tension the hole would line up perfect. Everything works and it fired up right away.

 

When mounting your cam sprockets did you mount exhaust side first, pulling timing chain tight to compensate for tensioner on intake side of timing chain?

I only ask because I've been reading & re-reading the service manual in preparation for my Alba cams to arrive... Im no expert by any means so go easy on me if I'm way off base.

Will these motors run if timing is off 1 tooth?

 

That's the same way as mine.But if I move it 1 tooth it is along way off. Guess im leaving it to the front

 

My friend can't get his car running. New alba cams turbo car. Flywheel mark on case split. Cams lined up, and LH piston at tdc. Help!!!!

 

alba nate
you are def the rzr guru on this board :clap::clap::clap:

 

What year is it? In 2012 they have some that lines up on the case and the newer ones line up through the mag sensor

 

Yes they will run one tooth off. Been there done that.

 

So to clarify he needs to put flywheel mark in cam angle hole, hole, and align cam sprocket marks with top edge of head correct? If he does that the LH piston won't be at TDC. Right now his drivers side piston is at TDC when the flywheel mark is at case halves and the cam sprockets are lined up.

 

The piston you want top dead center is the drivers side. Not the passenger. What year model is it?

 

The marks won't be dead perfect. You will pull your hair out trying to get it all perfect. It will be close. The main time it looks off is if you rotate it one full turn then look at it. It won't be as close then as it was when you set it. This is normal. I just went through all this. It's a pain I know

 

Sorry I just re read your post. It sounds to me it's all lined up. If the flywheel lines up with the split in the cases and the drivers side piston is at top dead center and your cams are lined up it should be good. Just make sure the right cam is in the right spot and the lobes are facing out

 

It's a 2012. I think he's got the exhaust cam off. I'll try to post a picture here. Picture is at LH piston TDC and mark aligned with case halves. Intake lobe looks like it's just past valve so that's correct. Exhaust cam lobe looks valve partly open. And the notch is not parallel to head.

 

Thats not TDC. When the PTO cylinder is at TDC and the flywheel mark is lined up, the PTO cam lobes on bot cams should be pointed outward (intake pointed out to the back and exh pointed out towards the front. How are you checking for TDC on the PTO piston? Also looks like you have 1 cam 180deg out. When everything is aligned, the letters on both sprockets should be on the top of the horizontal hash marks. Looks like you have one on top and one on bottom. There is definitly something not right there...

 

good pic advrider-- i have always wanted to see someone do from begining to end with a vid or really good pics, if u have more please post

 

I just zoomed in on that pic. You have the cams on the wrong side it looks like from the pic. The cam with the "EX" scribed on it goes on the exhaust side and "IN" on the intake.

 

I'll let him know, thanks. Glad I took a hi res picture. I was only there 5 min. PTO piston was at TDC in picture, verified with screwdriver in hole and flywheel mark at case halves.. So he has cams backwards and even if they weren't exhaust side looks 180 out

 

I'll stop by his place tomorrow and get it fixed. I work on Maserati and Ferrari. They have a notch on cam shoulder that lines up to mark on cam cap at TDC. That gets you close, then you degree each cam according to valve lift. Some of them it matters which intake valve on a particular cylinder you measure. The cam design actually opens one slightly earlier than the other...

 

Hopefully he didn't tag a valve.....on the v8's and V12's i work on I mark EVERYTHING before I disassemble cam setups. Chain to sprocket, sprocket to cam etc. I also use a tool to lock c/s at TDC using starter ring gear. Degreeing exhaust is really a pain, you measure valve closing in degrees of crank rotation at specified height. Dang Italians lol

 

Another trick I found is to not take the cam tensioner completely out when you install the intake sprocket as well. I backed mine out just enough to get the sprocket on the cam. Before it would roll my flywheel of TDC when I would apply tension

 

Just did my valve lash and YES I also had to install tensioner before rotating engine to get to the other sprocket bolts. Without the tensioner installed it wanted to jump timing.