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Post by andrey on Apr 26, 2015 17:41:53 GMT
I haven't much time to work on bike this month....but today was first ride of the bike and I make some logs... It's not good. I have 1 bar on second gear at 7000rpm with only 40% throttle....this will blow the motor for sure. I wonder...where is the problem....to small turbo or... Turbo is KO3 from VAG 1.8T engine...usually rated for 200bhp.
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wombat258
Oviraptor
Posts: 17
Bikes: GSXR1100WS
Reg: Dec 1, 2013 9:30:22 GMT
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Post by wombat258 on Apr 26, 2015 21:01:59 GMT
The boost trace is nice and level, indicating the wastegate is working well at 1 bar. If you need a lower pressure you need a lower pressure wastegate actuator for your turbo. I use a Kinagawa actuator that I can use different springs to achieve different boost pressures.
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Post by andrey on Apr 27, 2015 6:24:29 GMT
I plan to fully open the wastegate (disconnect the actuator rod) and make some logs...and try to tune NA. Then I try with softer spring that I have...but I'm not optimistic. This is second gear and I have 1 bar in the middle of RPM band with only 40% throttle....what will happens at 5-th or 6-th gear
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Post by nitro on Apr 29, 2015 15:35:23 GMT
Turbo is also to small, imo. But this waunt cause boost creep. Further a stiff spring or in most cases a to small WG hole. For check I would remove the WG actuator and make a testdrive with fully open WG. F.e. with enlarged WG hole up to 27mm and open WG my bandit made boost of 0.6 bar at higher rpm
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Post by andrey on Apr 30, 2015 6:39:56 GMT
Yep, I done it last evening. I find terrible lean spot between 2-5000 rpm...I fix it...and I'll try some changes under boost. The scary part is, that I haven't ride big bikes since 2007 and even NA Gixxer, fell to me like rocket. I plan to dyno da bike next month and most probably to sell it...I'm to old and too scared for this shit
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Post by andrey on Apr 30, 2015 7:18:27 GMT
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Post by andrey on Apr 30, 2015 7:29:16 GMT
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Post by andrey on May 1, 2015 19:05:42 GMT
Hmmmmmm...can someone show me his Ignition map..
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Post by nw66 on May 3, 2015 9:38:42 GMT
What about ground clearance ?? sorry if this has already been asked
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Post by andrey on May 3, 2015 14:56:27 GMT
When you virtually add downpipes and belly pan...it's pretty same level...so 'stock' ground cleareance.
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Post by arttu on May 4, 2015 3:59:28 GMT
Hmmmmmm...can someone show me his Ignition map.. Here is something for a low compression 1100 engine. Please note that only 140-160kPa rows are actually tuned on a dyno. The rest is basically educated guess
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Post by andrey on May 4, 2015 7:00:52 GMT
Thanx master Arttu. This is mine....but I'm not happy with I have stock engine and 100 octane Shell gas. I checked internet this days for ignition maps...and only find universal rule /0.5 degrees down for every pound of boost/. I wonder if my ignition is too retarded.
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Post by slingy1052 on May 4, 2015 8:12:10 GMT
The rule that found and used is 0.3 deg retard for each psi of boost. So your values at 200kpa should all end up 5 deg less than your 100kpa values. And you probably want all your advance in a bit sooner. The manual for my slabby engine said full advance by 2350rpm, so I would at least get all your in by 3500rpm at the latest.
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Post by katana on May 4, 2015 8:27:44 GMT
Its a very safe and very conservative map - I had a look at mine but with 3 or 4 different compensations added it wouldn't make much sense but min is mapped to over 2 bar and is still getting a base timing of 28 degrees @ 9000 up which probably gets pulled down to 25-26? You could make the resolution off boost a bit more course to add lines under boost where you need them and i'd pump up some of your low rpm / low boost numbers - its more NA here so give it some timing!
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Post by andrey on May 4, 2015 9:37:57 GMT
Thanx...I make new ign. map and tonight I'll test it.
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