Racer X
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Age: 46
Location: Baltimore Maryland
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A.K.A Darkhorse
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« Reply #15 on: July 17, 2009, 03:11:50 AM » |
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I think it is OK just 10-15 psi more than before. I can retard the ignition some Now that I have Ztrack s ignition system
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Travisty
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« Reply #16 on: July 17, 2009, 03:46:17 AM » |
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I think he was referring to the 90/170 combo. IIRC, Racer said that he had that issue of low compression because of valves not seating fully? I certainly hope that the #1 wasn't that low "just because".
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Racer X
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« Reply #17 on: July 17, 2009, 06:09:20 AM » |
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The intake and exhaust valves on number one where leaking. The valve clearance was spot on . So that sorta rules out bent valves. After lapping they held carb cleaner for a couple minutes. The bike ran OK. I wounder if they ever where seated in the first place.
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« Last Edit: July 17, 2009, 07:10:39 PM by Racer X »
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spooph
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facetiousity is my middle name
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« Reply #18 on: July 18, 2009, 12:09:46 AM » |
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X, am I miss reading your post or does it say that #1 is 170, and #2 is 90. Is there supposed to be an extra 1 in front of that 90, or why am I being slow?
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Racer X
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« Reply #19 on: July 18, 2009, 03:59:40 AM » |
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When I went to install the adjustable sprockets .I wanted to measure the compression before and after. So when I got back from the drag strip I checked the compression . # 2 cylinder ONLY had 90 psi . it took about ten revolutions to reach that pressure. #1 measured 170 psi in about four revolutions. There should be a 1 in front of the 90 but that is the problem . I had about half the pressure in number one then number two.
The bike ran fine and went faster at the drag strip than ever before so I was shocked .
I discovered leaking valves and fixed that. I also cut down my block to raise the compression . now I have over 180 psi in both cylinders and it only takes a couple revolutions of the engine to pump up to that pressure.
I got the engine running last night . I still have not gotten the bike together . Or balanced the carbs . That is for today . But it sounded very good . So far
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StockWall
The Man
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« Reply #20 on: July 18, 2009, 11:48:03 AM » |
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This thread is a great idea.....very deep modding, but I need pics or links or something to allow it to stay in this section.
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hi-tech
BLUE NINJA
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« Reply #21 on: July 18, 2009, 11:53:49 AM » |
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This thread is a great idea.....very deep modding, but I need pics or links or something to allow it to stay in this section.
oh oh.. i better ring X!! |
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ztrack157
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The Sportisi Master
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« Reply #22 on: July 18, 2009, 02:04:34 PM » |
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Here is the built head from Kibble White for the Sportisi Race Bike. Fricken expensive. Its going to be ported next week and the the Web Cams inc. Cams can go in. What are you doing to your top end eric?
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Racer X
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Location: Baltimore Maryland
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« Reply #23 on: July 18, 2009, 02:45:56 PM » |
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For the engine I ride to work every day I will just use the adjustable sprockets to make up for the block decking and a little exhaust cam retard to aid in scavenging.
For the race engine , The engine builder will fit bigger valves port the head custom springs and cams made by megacycle .
Money is no object when you don't have any. Ha ha
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ztrack157
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The Sportisi Master
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« Reply #24 on: July 18, 2009, 02:54:54 PM » |
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I recommend black diamond valves and their springs. It is like an $800 set up but man it is worth every penny. http://www.blackdiamondvalves.com/Default.htm just watch their intro. |
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Racer X
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« Reply #25 on: July 20, 2009, 07:14:12 PM » |
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I have seen cylinder pressures over 200 psi on race cars that ran race fuel . I think I can still use pump gas . Other than that yes it is normal .
I just got the bike running I will test run it and report . I have Ztracks ignition system . It is very cool . I have set it up with map 1 Like the stock set up .35 deg @ 3500 all the way to 13500 rpm . Then Map 2 is a special custom set up I will try . I cant wait to ride it . I have not ridden my ninja since June .
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ztrack157
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The Sportisi Master
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« Reply #26 on: July 21, 2009, 01:37:15 PM » |
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I'm waiting to see what it does. Your map is totally different then mine so I can't wait to see.
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Racer X
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A.K.A Darkhorse
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« Reply #27 on: July 21, 2009, 03:03:25 PM » |
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First test ride was OK . It would not rev past 12500 rpm I think it went lean. It takes more fuel to make more power. I was on the edge before . Now with the added mods . The engine wants more fuel . I will check the plugs tonight.
I will have to re jet and test ride again . I am happy enough with it though . It feels great up to 1/2 throttle . Then it feels a little flat. Forth and fifth gear would not pull to rev limit. That tells me it is running out of gas.
I did the test using map one . that is 41 deg of advance till top end then about 39deg from about 11000 or so .
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« Last Edit: July 21, 2009, 03:05:04 PM by Racer X »
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ztrack157
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The Sportisi Master
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« Reply #28 on: July 21, 2009, 08:15:44 PM » |
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Map one runs 41 until 9500 where its at 39 then it runs 41 until 12000 then 40 the rest of the way. I'm not running flat with my set up I have 112 mains, kn pod, and full exhaust right now. Some tweaking is needed to get the full potential out of it like with any thing of this nature. i916it aka tommy had the same issue he would hit 12500-13000 and it would flatline and not go any higher. When you rejet try running map 1 but change 9500 to 40 degrees and from 12000 up to 41. Add some lucas oils octane booster to 91 octane gas and give it a whirl. This is the best setup myself and bram at sportisi have found.
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Racer X
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« Reply #29 on: July 22, 2009, 03:17:41 AM » |
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I was running 112 mains .It was a tad rich with the Yoshi with the baffle. With the Nojima it was right on or even a tad lean . Now it feels lean. and now I have raised the compression . and retarded the exhaust cam timing. I don't have 114 or 116 but I have a set of 118.I will try the 118 and order the rest . I can also drill a set but I hate to do that.
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