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Round 2 - Adjustable cam sprockets for B202, B212 - $300 USD

Posted: Tue May 24, 2016 3:03 pm
by DrewP
Hi everyone,



Price is $300 USD shipped within the 48, or $285 USD + actual shipping for the crowd who lives outside the US. No payment is required until the parts are ready to ship. I expect to have parts ready in 3-4 weeks, so the end of June.


Based on the interest in Luke's thread for another round of adjustable cam sprockets I'm making another batch.

These will fit B202, B212, and early '90-'93 B234. These allow you to time custom cams, mess with overlap, and to compensate for a cylinder head that has been cut thin enough to throw off the factory cam timing.

At this time I am planning to make 12 sets.

They will be identical to the original batch, and will include the modification I had to make later to make sure the chain links do not touch the aluminum hubs.

The indexed adjustment goes from -10 to +10 camshaft degrees from nominal. (For reference, one tooth on the sprocket is ~9.5 camshaft degrees).

These are made from 6061-T6 aluminum for the hubs, steel sprockets with hardened tooth faces, grade 10.9 metric fasteners, and a hardened steel dowel pin that clocks the hub to the notch in the end of the cam.

I have had a set of these in my car for ~10k miles now with no issues.




What you get:

-A pair of complete sprockets, with fasteners
-An aligning pin to lock in your desired timing during adjustment
-A few extra fasteners
-An extra dowel pin
-My gratitude



The list so far is (11/12):

-Luke
-Tsmall
-Jon1 (2 sets)
-gmreider
-Neil_G
-Crazyswede
-iceman_ca
-vintagesaabs
-tirediron
-Nate


Please let me know if you'd like me to add you to the list.



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Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Thu Jun 16, 2016 2:28 pm
by DrewP
Quick update.

The sprocket blanks I ordered 3 weeks ago finally shipped and should be here next week.

I dug through the old CAD files and will make the fixtures and start machining probably next week once I cross a few things off my list of stuff at work. I'll throw up some photos when I start cutting metal.

Added tirediron to the list, which brings the list so far up to 10 sets spoken for.

:hungry:

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Mon Jun 20, 2016 1:56 pm
by DrewP
Big box o' sprocket blanks showed up today, and adding Nate to the list, so 11 sets spoken for so far.

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Sat Jul 02, 2016 1:40 pm
by Jon1
Are you going to accept payment via PayPal?

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Jul 05, 2016 8:02 pm
by DrewP
Yes, PayPal, Google Wallet, or mailing me a check or money order are all fine with me.

I didn't make any progress over the long weekend because I was too busy having fun, but life and work look like they are slowing down a little bit, so I hope to have more meaningful updates soon!

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Thu Aug 11, 2016 12:01 pm
by Jon1
Any updates?

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Aug 16, 2016 6:39 pm
by DrewP
Damn, I was just thinking I needed to update everyone.

:-(

I just found out I have to move the end of this month (overlapping when I'm on vacation) so I'm paused working on these for the next few weeks unfortunately.

I have the sprockets and hardware and have the tooling made, it's just getting time to get on the machines to cut everything. I'll try to get some photos up soon of progress so far.

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Aug 30, 2016 12:46 pm
by speedysaab
Hi - can I still get a set of these?

thanks
Rob
UK

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Thu Sep 29, 2016 4:44 pm
by Jon1
Now that you are back from "Burning Man" have you made any progress?

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Mon Oct 17, 2016 3:03 pm
by iceman_ca
Anything happening on these items? I want assemble my engine over the winter so it would be nice to have them

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Oct 18, 2016 1:23 pm
by DrewP
Hey everyone,

I owe you all an apology. I've had some things going on with family and a close friend the past few months that have derailed all my projects, but these are definitely still near the top of my list.

I have all the raw materials and hardware and stuff here at my desk, I just haven't had a chance to get down in front of the machines after hours and start making chips.

For those of you who I'm holding up I'm really sorry, I'll try to get more progress updates to you as I can. This is a really good thing for me to get the fire lit under my own ass, so fear not.

Thanks for your patience (patients?) and understanding, and thanks for the kind words to those of you who reached out to me to see if everything was ok, it means a lot to me.

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Oct 25, 2016 11:27 am
by vintagesaabs
Hey Drew,
Thank you for update.
Family, friends, and health are first of the priorities.
I hope all is better for all in your circle.
Take care, Bob

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Oct 25, 2016 1:11 pm
by DrewP
Thanks Bob, everything has evened out now, thank goodness.

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Nov 08, 2016 2:09 pm
by iceman_ca
Absoultely family comes first. I really wasn't trying to push you, just curious

Re: Round 2 - Adjustable cam sprockets for B202, B212 - $300

Posted: Tue Nov 08, 2016 4:14 pm
by Crazyswede
No worries. The break in the schedule has worked out nicely with my budget all going to building materials.