Bill, glad to hear about your experience with the "S" cams. I just received my cams from BW as well. How did you go about checking for clearance? I have yet to turn my engine over as I'm waiting for my new pushrod adjusters to come in since I accidentally broke one during the install. Also, did you have to do any machining of your case or cover? I found that my cover would not fit with the "S" cams and I had to use a dremel with a grinding stone on the timing cover to get it to fit flush again. I probably removed around 3-4mm.
thanks for sharing Bill and BW. This is great stuff. I kick myself for not finding a way to get those cams when they were available. Bill, do you use any decomp at all? If so, what did you end up doing (Adrian's mod comes to mind)
Wow Bill, that is some noticeable power... really good to hear. Sounds like 70-75 mph in 5th will be a bit more relaxed. You went back to the stock ECU, correct?The Harris Scrambler looks good as always.
That TCI [CDI] might have been faulty, Bill. The performance CDI boxes as on the machine I tuned should give 4 degrees more retard at starting and low RPM's and 4 degrees more advance at high RPM's, for a bit more top end go. Certainly, any tendancies to kickback on this testbed machine were eliminated by the new CDI box. Back to the 'S' cams, there are a number of plain 'Iron' and some 'Asbo' iron engine Bullets now using these cams and showing improvements as a result, as well as the AVL types they were mainly intended for. B.W. P.S. - very important - if any interference is noted between the exhaust valve and piston, the timing for this valve should be ADVANCED [move cam anticlockwise] to close it sooner and make more room over the piston going over TDC on the 'overlap'. Please, do not retard this valve's timing by mistake, or damage will probably result as a consequence. Retarding the inlet timing by turning this cam anticlockwise opens this valve later and will increase the space between piston and valve going over TDC on the 'overlap'.
Hey BW - Just so I'm clear (and if there is a thread explaining it just point me to it) You put the washer in there and even with drilling it out wider, you still have a much smaller exhaust port to header than stock?
Thanks for sharing that, Bill. I am glad it worked out ok. So far as I know, all the other 'S' cam modified AVL machines ran ok 'on the dots', but retarding the inlet cam one tooth to avoid the piston isn't as drastic as the numbers [degrees] would have you believe. It will also take you further away from any likelihood of pinking [pinging] and aid top end performance a little, too. Good news indeed and I hope you continue to enjoy your machine ! B.W.
I think that makes 3 of us who still need a set of "S" cams! Send a pm to Paul, I am sure that he's got things planned for these cams -Sanket
I think that makes 3 of us who still need a set of "S" cams! Send a pm to Paul, I am sure that he's got things planned for these cams Tej - In order to get better top end and more crisp, you will have to dump the CV carb -Sanket
I'm interested in these S cams. I have a 2008 AVL and have had up to 75, but was afraid to push it any farther. Are there any other modifications to the engine, carb, or electrical to use S cams? I have the stock CV carb. My bike is pretty much stock mechanically, except that I have removed the stock air box and oil bath air cleaner. Although more power would be nice, I am concerned about ruining the great gas mileage this bike gets. I'm setting this bike up for long distance traveling.
Paul, when you worked on this Electra did you notice any big end issues? The AVLs big ends fail here like anything, I guess a sleeve should sort this for us but no idea if anyone can get this kind of job done.Regards,Zieu
I was thinking of trying the TM32 in the near future.
I'll get those fork notes up there too.
Just to inform anyone who may still be interested, another batch of 'S' cams are on order from the cam makers, one set will be going into a machine I am upgrading here in the U.K., the rest should be available to interested parties Worldwide . B.W.