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Author Topic: SE 251 vs Zippers TC575  (Read 4423 times)

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hwyfever

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SE 251 vs Zippers TC575
« on: June 15, 2011, 01:59:07 PM »
Hey guys and gals... I am looking for your advice on replacing my stock 253 cams on my 103...  So far, only air cleaner, exhaust and RT has been done...  I like the way it runs today, but the question is always there.  At the 40K service I'm replacing the spring cam tensioners with the HD hyd conversion.  Now seems like a good time to change the cams...

I look forward to your answer and advice...  Hwyfever...
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Mr D

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Re: SE 251 vs Zippers TC575
« Reply #1 on: June 15, 2011, 02:15:51 PM »
The CVO 103 heads have low compression, with out raising the compression the SE 251 is not an option. The RS 575 is considered a "Bolt In" cam for the CVO 103 which will be better suited.
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Unbalanced

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Re: SE 251 vs Zippers TC575
« Reply #2 on: June 15, 2011, 02:34:10 PM »
the 251 comes in a bit later and requires 10.3 to one or great to work decently.   (Note the Original CVO Heads had .630 spring lift so it was no issue which is why it was a bolt in cam for those motors)   They are about equally noisey as far as valve train noise.   2 thumbs up for the 575
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mattm

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Re: SE 251 vs Zippers TC575
« Reply #3 on: June 15, 2011, 05:32:51 PM »
 :bananarock:  I have the Zippers 575 cams in mine.  Love them!
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Fired00d

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Re: SE 251 vs Zippers TC575
« Reply #4 on: June 15, 2011, 08:08:39 PM »
Quote from: Unbalanced on June 15, 2011, 02:34:10 PM
the 251 comes in a bit later and requires 10.3 to one or great to work decently.   (Note the Original CVO Heads had .630 spring lift so it was no issue which is why it was a bolt in cam for those motors)   They are about equally noisey as far as valve train noise.   2 thumbs up for the 575

Quote from: mattm on June 15, 2011, 05:32:51 PM
:bananarock:  I have the Zippers 575 cams in mine.  Love them!
Ditto what they said. :2vrolijk_21: See my signature for mods in addition to 575 cams I did.

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hwyfever

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Re: SE 251 vs Zippers TC575
« Reply #5 on: June 16, 2011, 08:12:00 AM »
Placed my order with Zippers yesterday. They were very helpful on the phone. Look forward to install next week. Thanks for the advice.
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HD Hyd Cam Plate Conversion, Zippers Red Shift 575, SE Adjustable Push Rods
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What I fear most when I die is my wife selling my stuff for what I told her I paid for it.

Warhawk

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Re: SE 251 vs Zippers TC575
« Reply #6 on: July 06, 2011, 12:11:24 AM »
hwyfever ... I'm anxious to hear your thoughts about the 575 cams.
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Screamin

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Re: SE 251 vs Zippers TC575
« Reply #7 on: July 06, 2011, 07:27:18 AM »
Ditto the above. Did the Zippers 575s and I've about 30k miles on them. Very pleased w/ the performance. Mileage went to he11 though.
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hogasm

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Re: SE 251 vs Zippers TC575
« Reply #8 on: July 06, 2011, 10:08:33 PM »
Quote from: Screamin on July 06, 2011, 07:27:18 AM
Ditto the above. Did the Zippers 575s and I've about 30k miles on them. Very pleased w/ the performance. Mileage went to he11 though.

Mileage with the 575's and a Thundermax is 38-40 with a trailer with Porthole following

His bike has 575's with a race tuner was 33-35.....looks like 38 with a RP
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hwyfever

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Re: SE 251 vs Zippers TC575
« Reply #9 on: July 21, 2011, 02:01:34 PM »
Hi guys.  I finally got the 575 cams, hyd cam plate, lifters and bearings installed...   For those interested in cam tension shoe wear, it was not too bad after 37K... It looked like I might get another 20K miles or so...  Better safe than sorry I guess...  The good news - the power difference with the 575 cams is notable.  My seat of the pants dyno puts the improvement right in the 2K to 4k range - right where it is advertised and most needed for my style of riding.  These cams do make noise compared to stock.  It was immediately noticeable and louder than anything I've used in the past.  Fortunately, I ride with ear plugs and the stereo blasting, so this is not a problem for me...   Money on the cams was well spent IMHO.       
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HD Hyd Cam Plate Conversion, Zippers Red Shift 575, SE Adjustable Push Rods
SE Race Tuner, Zippers Highflow Air Cleaner, S&S True Duals, Bub Stealth 7,
Progressive Monotube Cartridge Forks, Progressive 940 shocks

What I fear most when I die is my wife selling my stuff for what I told her I paid for it.
 

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