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REPO
Joined: 09 Sep 2011 Posts: 179
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Posted: Wed Feb 29, 2012 11:48 am Post subject: 200 Sport Jet Reed Valves |
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Looking to replace my reed valves on my 200 SJ (2008) Looking for opinions on stock, or aftermarket (Boyesen or TDR)
Most important, where can I buy these? |
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ryandh
Joined: 24 May 2013 Posts: 23 Location: Grande Prairie
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Posted: Thu Jun 20, 2013 12:15 am Post subject: Reeds |
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Looking to do the same on my 240. What did you end up doing? I have heard the tdr composite reeds are the best? I have also seen guys dropping the jet size at the same time. |
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REPO
Joined: 09 Sep 2011 Posts: 179
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Posted: Thu Jun 20, 2013 7:05 am Post subject: |
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I ended up buying the Boyesen ones. It was pretty easy/straight forward to do. Lots of tiny screws so be sure to work over a catch pan, or similar. |
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ryandh
Joined: 24 May 2013 Posts: 23 Location: Grande Prairie
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Posted: Thu Jun 20, 2013 10:40 pm Post subject: |
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Are they composite? Did you change jets? |
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REPO
Joined: 09 Sep 2011 Posts: 179
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Posted: Thu Jun 20, 2013 10:41 pm Post subject: |
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I am not 100% sure what they are made if. Sort of a plastic material. My 200 is fuel injected, so no jets. |
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brutis20
Joined: 26 Jul 2008 Posts: 5
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Posted: Thu Jun 20, 2013 11:18 pm Post subject: Reeds |
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I also changed mine on the 175SJ. Was pretty easy, I didnt jet anything and runs fine. I think they are composite, not metal like the stockers, |
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ryandh
Joined: 24 May 2013 Posts: 23 Location: Grande Prairie
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Posted: Tue Jul 02, 2013 11:31 pm Post subject: |
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Where did you buy the reeds? |
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REPO
Joined: 09 Sep 2011 Posts: 179
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Posted: Wed Jul 03, 2013 7:17 am Post subject: |
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eBay.
All of the boat shops should spent her stock them or can get them as well. |
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ryandh
Joined: 24 May 2013 Posts: 23 Location: Grande Prairie
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Posted: Wed Jul 31, 2013 11:25 pm Post subject: |
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Picked up a set of the boysen reeds. Now to figure out where they go..... |
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mountainman
Joined: 15 Jan 2006 Posts: 131 Location: Grande Prairie, Alberta
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Posted: Mon Aug 05, 2013 11:28 am Post subject: |
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ryandh wrote: | Picked up a set of the boysen reeds. Now to figure out where they go..... |
Did you buy local or order them in? Looking to do the same for my 240. Did it improve fuel economy at all? |
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ryandh
Joined: 24 May 2013 Posts: 23 Location: Grande Prairie
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Posted: Mon Aug 05, 2013 11:15 pm Post subject: |
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Bought them at north gate Honda. They stock them. Haven't had time to change them yet. Might have to wait until fall. |
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Rivernut
Joined: 16 Aug 2009 Posts: 34 Location: Massachusetts
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Posted: Tue Aug 06, 2013 11:20 am Post subject: |
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I replaced the reeds with Boyseen reeds on a Mercury V6 about 15 years ago. Easy, but tedious with all of the screws. I ground down the screws by about 1/8" to increase airflow, then put red lock-tite on the threads to keep them in place. The reed valves are in blocks or "cages" mounted on the backside of the intake manifold. Really simple and reliable system compared to my jetboat's chevy valve train.
_________________ Real boats don't have propellers!
-- Rivernut
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sharky
Joined: 17 Mar 2010 Posts: 39 Location: Grande Prairie
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Posted: Wed Aug 07, 2013 10:48 pm Post subject: |
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On a 175 Drop your jets a couple sizes and engine will run smoother and easier on fuel, stock is 74, northgate has 72's in stock. _________________ What was that noise? Glad wife didn't see the bill!! |
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Rivernut
Joined: 16 Aug 2009 Posts: 34 Location: Massachusetts
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Posted: Thu Aug 08, 2013 4:48 am Post subject: |
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Why would you drop down in jet size when increasing airflow? Was there a known issue with Mercury jetting them too rich? The gain in airflow is very slight and my not even be noticeable in stock applications. Reducing jet size in a properly jetted engine causes a lean air/fuel ratio. My experience is you performance tune in a test fashion while closely monitoring rpm change and spark plug appearance. Bad things happen in a hurry at high rpm's. Running lean causes pre-ignition and burns up pistons. You cant hear ponging on marine engines. Better to run a tad rich than lean. Check the plugs first. Lots written online about reading plugs. it is more difficult reading them on two strokes because of the oil. _________________ Real boats don't have propellers!
-- Rivernut
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