03YubaBanshee Posted September 23, 2006 Report Posted September 23, 2006 I bought a cub set-up about 6 months ago. I am running the 350 cubs, 33 PWKs, Toomey T5 Quote
wesw Posted September 23, 2006 Report Posted September 23, 2006 rough guess with the lack of info you provided. those 42 pilots, cek/cel needle mid, and 148 mains and start doing some plug chops. 168 if fat for that elevation, 150-158 at 1000 ft is what many run around here. find out what needle you have. Quote
03YubaBanshee Posted September 24, 2006 Author Report Posted September 24, 2006 Thanks for the help. I am just running the needles that come stock with the PWKs. I have just been checking the tops of the plugs...I think your right and I need to do some plug chops. I will do a search and find the proper procedure. Quote
dajogejr Posted September 24, 2006 Report Posted September 24, 2006 Here you go... http://www.dfn.com/benkaren/plugchop.html 03...I'm sure you know this already, but you are missing out on a few HP with those T5s on there.... A better breathing pipe like a Shearer, CPI, etc., would give you some more top. Take it from me...I had T5s and stock carbs on my 421 cub when I first put it together.... Quote
03YubaBanshee Posted September 26, 2006 Author Report Posted September 26, 2006 Here you go... http://www.dfn.com/benkaren/plugchop.html 03...I'm sure you know this already, but you are missing out on a few HP with those T5s on there.... A better breathing pipe like a Shearer, CPI, etc., would give you some more top. Take it from me...I had T5s and stock carbs on my 421 cub when I first put it together.... Thanks for the link to the info on the plug chop. I know I am loosing a little power with the T5's...I think new pipes are the next purchase. By brother is running a set of Shear's, I was thinking of ordering a set of CPIs. What are you running on your 421 cub? What do you think of CPIs for a cub motor? Quote
dajogejr Posted September 26, 2006 Report Posted September 26, 2006 I don't like the CPIs...for a few reasons. I don't like how they fit through the air filter area....and, I think those beer kegs make it hard to change plugs. I've read more often than not...Shearers make more power, but CPIs make a little broader spread of power. I have Shearers... (RDZ inframes are the same as Shearers, RDZ no longer makes inframes.) I love them. I do have Show Chrome though...their standard chrome leaves a little to be desired. A lot of people have to shim the left side or it hits the head. so...about a 1/2 inch of washers or a spacer are all that you need at the front pipe mount, no big deal. Other than that...fit and finish are nice. I especially love the design how they go up and over your air filters, no need to worry about melting an outerwear or filter.... CPIs have a little more bottom, but Shearers have more power on top and rev out further.... I would love to go out of frame...but, Silver Lake can and has tested for noise...and spark arrestors are mandatory. I know there are "ways" around that...but, if you get caught...the fine is not worth it. If I rode in areas that didn't have noise or spark arrestor restrictions, I'd have Shearer out of frames in a heartbeat.... Quote
03YubaBanshee Posted September 27, 2006 Author Report Posted September 27, 2006 Thanks for the info. Quote
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