03-04-2017, 03:40 PM | #511 |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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Without actually running the numbers I venture to guess that the holes in total give more than 300% area than the i.d. of the pipe, so not really restricted even with the plug.
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03-05-2017, 12:01 PM | #512 |
Join Date: Jun 2011
Posts: 1,335
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That's good for an extra 5hp/5mph.
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03-05-2017, 12:40 PM | #513 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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03-05-2017, 12:41 PM | #514 |
Join Date: Jun 2011
Posts: 1,335
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03-05-2017, 12:48 PM | #515 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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I was actually able to get it out yesterday for about an hour. As Jay and ben2go state, if there's any difference, it's incremental. The bike did run good though and the biggest thing I notice with the different muffler is the power doesn't fall on its face under 5k rpms as badly as it did stock.
My goal is to open the breathing as much as possible more than anything. The true test will be to compare my RX3 with the new muffler and adjusted baffle against Mrs 2LZ bone stock RX3. If I can only get it to warm up a bit and quit snowing. I think being locked indoors for weeks and weeks on end has fueled my need to tinker on projects like this, just to keep what little sanity I have left.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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03-05-2017, 03:04 PM | #516 |
Join Date: Feb 2016
Location: Portsmouth, Virginia, USA
Posts: 632
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2LZ, you mention opening up the intake tract...notice that Gerry at CSC opened up the intake ports on the head for their race bike. I can see where such a mod would help at high rpm, not sure it's all that important at lower revs. I wonder if CSC ran the bike on a dyno to get firm before and after numbers.
Peter Y. |
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03-05-2017, 06:58 PM | #517 | |
Join Date: Jun 2011
Posts: 1,335
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Quote:
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03-05-2017, 07:57 PM | #518 |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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More pulling power (grunt) at low rpm will require a cam grind suited for that, likely at a sacrifice of high rpm power.
A modest gain in low rpm output can be gained by advancing the stock cam a few degrees, if you're willing to do the modifications. As Peter and Ben said, flow improvements either upstream or downstream don't impact lower speeds. |
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03-06-2017, 10:49 AM | #519 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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These things are lame at lower R's anyway, oddly so really.
General breathing improvements will help across all rpm's....though as you state, really opening up the breathing like Gerry did to the race bike will improve higher R's. I all but ruined the low end grunt on my Husqvarna when I ported the crap out of it. It made it a rocket "on the pipe" when out on the track, but I ruined what little trail riding ability it had. Now that I'm older, I wish I wouldn't have gone so radical with it. The biggest problem we have with "our version" of these bikes is that it doesn't really matter what we do, we're basically stuck with the injection mapping and predetermined timing curve. The sensors can adjust only so far. It would be neat to get a carb version and then start to play. My attempt to help breathing isn't to make it a fire breather, it's just to help make what we have a little more efficient. It's all just in "good fun" really. I can't help but tinker. It's how I'm programmed. The upside is if it makes little to no difference, I'll just toss a stock pipe back on it and call it a day.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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03-10-2017, 06:51 PM | #521 |
Join Date: Mar 2016
Location: Tuscaloosa Al.
Posts: 433
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started getting it ready for its first camping trip. Bike has started acting up... hit a bump and it would die and dash would go blank. Finally traced it to the ignition switch. while it was running you could barley tap the key with your finger and the bike die and dash would go blank. turn the key off and back on start right up tap the key and it would die and go blank again. Called CSC and their shipping a new switch out today under warranty! got to love their exceptional quality service!
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Wingless Hawk, 2016 orange RX3, 97 wide glide,2003 KLR |
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03-10-2017, 09:35 PM | #522 |
Join Date: Sep 2016
Location: Redmond, WA.
Posts: 534
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Did you try to spray and WD-40 in there to see if some dirt was causing an issue?
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2017 BMW F800GS Adventure |
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03-10-2017, 11:54 PM | #523 |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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Ron, thanks for sharing that info!
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03-11-2017, 10:27 AM | #524 |
Join Date: Sep 2015
Location: East Central Hellinois
Posts: 1,344
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Ron....
Thanx for another great CSC testimonial.
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03-11-2017, 11:14 AM | #525 |
Join Date: Mar 2016
Location: Tuscaloosa Al.
Posts: 433
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yep, just a bad switch. Said they had 1 or 2 do that before. only thing is ill have a seperate key for the ignition now but thats no problem.
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Wingless Hawk, 2016 orange RX3, 97 wide glide,2003 KLR Last edited by Ron B; 03-13-2017 at 09:17 AM. |
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