Cam sprockets.

[One_punchmachinegun]

Hey really quick question. I was doing my dad's TB(alh) and the cam sprocket cracked, so instead of pay 80 bucks I checked if a 1.6 spocket matched up and they are identical. Do you think this is alright to do

[One_punchmachinegun]

Identical other than the inner part of the sprocket. Same tooth count and size.

[RabbitJockey]

tooth count is definitely the same, the taper/press fit should be the same, but i have never worked on an alh to be able to tell you it will work.

[One_punchmachinegun]

Yeah, I ended up just buying one. I will get all the measurements when I get the new one. I really think that they are the same. The ALH one design sucks, it's much weaker. It cracked because I didn't use the VW specific tool and I used my own sprocket puller. But I could only get on the outside of it and when I started to apply pressure the outer sprocket wheel came right off leaving the rest of the sprocket on the cam. I've never had issues with the older 1.6.

[bbob203]

I agree weal design also doesn't help when people crank them down to 60ftlbs to.

[RabbitJockey]

Yeah people totally overtorque them, probably scared of the press fit.  I always just tapped them off with a hammer, a quick swift knock and they come right off.

[theman53]

If there was only a way to drill a hole in the plastic timing cover back side so you could do it just like a 1.6

[libbydiesel]

Is that sarcasm?  There is specific spot cast into the plastic backing plate for drilling a hole and using a punch on the rim of the sprocket.  I have never had any issue getting them off that way without damage.  I make sure the mating surfaces do not have any oil residue by cleaning using brake-clean and then torque to 45 ft-lbs.  I know of more than one cam that slipped from the factory without ever having been loosened.  That leads me to believe the factory torque spec is too low.

[RabbitJockey]

Is that sarcasm?  There is specific spot cast into the plastic backing plate for drilling a hole and using a punch on the rim of the sprocket.  I have never had any issue getting them off that way without damage.  I make sure the mating surfaces do not have any oil residue by cleaning using brake-clean and then torque to 45 ft-lbs.  I know of more than one cam that slipped from the factory without ever having been loosened.  That leads me to believe the factory torque spec is too low.

hmm thanks for the tip, ive been doing the 33 or w/e it is.

[bbob203]

I do 33 + a little extra

[One_punchmachinegun]

Yeah same here. About 40-45lbs.
Yeah the thing was so on there I had to remove the cam to get it off after it had broke. Even then it wasnt easy. If I had to guess it was torque to 100. It was solid.

[CRSMP5]

id ask the dr diesel guy who made cams... if his cam fit a aaz and a tdi.. id say same..

yep plastic has spot to drill... hammer/punch.. no need for puller till pd that ive seen

[One_punchmachinegun]

Good advise right there.. thanks

[theman53]

Is that sarcasm?  There is specific spot cast into the plastic backing plate for drilling a hole and using a punch on the rim of the sprocket.  I have never had any issue getting them off that way without damage.  I make sure the mating surfaces do not have any oil residue by cleaning using brake-clean and then torque to 45 ft-lbs.  I know of more than one cam that slipped from the factory without ever having been loosened.  That leads me to believe the factory torque spec is too low.

Yeah it was a bit sarcastic. I mean if you don't own a set of bits that will drill through the plastic you probably shouldn't attempt the TB job.

[vanbcguy]

Remember we had someone who was smacking the transmission end of the cam with a hammer trying to make the sprocket pop off the other end? Always good to make sure things are spelled out for the next guy...