308 cam pulley group buy

Just an update on the group buy. The pulleys are now ready to ship and should be with me in a week or so. I got a pre-shipment inspection done and the metallurgy, dimensions and belt fit were good but some had marks in the anodising so had to be re-done. They might send a sample set with round teeth (36 tooth 8M HTD) if they are ready in time. For those wanting the round teeth it would be good to know whether the preference is for adjustable hub or just lots of holes to adjust with.
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They are en route to me and I should have them next week. Depending on my schedule I should send them in 1-2 weeks. Don't send money until I have them and have had them tested.

 

Let's guess who the stealth 250288 is-- 2 posts in 2 years. Probably someone who is not happy about this effort to get affordable options to whatever they are selling?

As all the people who ordered already know, I was not happy with the belt fit so am getting them remade. You will be very pleased to hear that I may use the bad L belt pulleys and fit them with GT2 teeth so there will be budget GT2 belt options

 

My apologies for questioning your motives-- I was having a rotten day (not fun opening box after box of unusable pulleys that cost a few grand :-(

Strangely, there is no message in my PM box from you so please send it again with your real name and contact details so I can add you to the list. Also let me know whether you want original belt (trapezoidal "L") or GT2 belt pulleys. The latter will be more expensive since you will get the 2 lower pulleys as well and they won't be ready for a few months if I do have some made.

 

Hi all,

The pulleys with the new (correct) toothed section are now ready and will be sent out at the end of the week to US and Australia. Europe-bound pulleys will post from the UK in early Sept. I have a couple of extra sets due to some people dropping out due to the delay. If you want some let me know. $370 (incl. post) to US, add $10 for Europe and $25 more for other countries.
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Mark, you unscrew the 4 locking cap screws, take of the mounting flange, put in your pin, reassemble.

 

I'll be using mine in the next few days and had just planned to put the pulley onto the cam without the central bolt (crank at TDC and cam locked at its TDC lift), check and mark which cam hole would line up best with a tight belt, remove pulley and put in the pin, reassemble and make final adjustment with the adjustment of the hub and then lock it up with medium threadlock on the cap screws and Loctite 648 or similar retaining compound on the flange/hub interface as I will not be playing around with the timing.

I'll let you know if I'm missing something but it seems straightforward to me- but it's 3am and I may well be forgetting something.

 

I have a few sample sets like that but the teeth are a little high and need to be machined down .5mm and the tooth corners radiused. I can try to get them in to the machinist but he already did me a favour letting my batch jump the queue and my local anodizer closed Wednesday for a few weeks.

 

The pulleys fit well and it was easy to set up as described above. The Cat cams have so many holes it was easy to find holes that were correct for the belt teeth and had the adjustable hubs fully retarded (i.e. cap screws against the right shoulder of the slots.) I will use thread lock on the screws and Loctite 648 on the flanges. If anyone wants more insurance they could drill/tap a hole for a locking screw.
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John, I am replacing the 37 year old plastic pulleys since it is common for their guide rings to break off.

Mark, my new cat cams don't have any timing marks so I used the lift data for the cams to index them. I used a dial gauge on the bucket lifter and set each cam to the specified top dead centre lift. I then put on the belt and tensioner, put a timing wheel on the back of the crank and turned it over a few times checking both the TDC lift and the degrees of max lift.

 

I think they switched to steel pulleys during the QV production so some have plastic.

 

I have a couple of sets that are cosmetically not the best (scratches or anodising not even/marked.) $250 set. I also may have two non-adjustable sets available next week if I can get them anodized ($320/set)