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Old 7th December 2014
Iron Mike Iron Mike is online now
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Default 2000 Buell ECM with kickstart question

Hello, i was wondering if anyone knows the minimum cranking RPM needed for 2000 Buell ECM to register? Was lookinhg to use on EFI converted Ironhead with kickstart. Any replies would be great. Thanks.
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Old 8th December 2014
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Default 2000 Buell ECM with kickstart question

or does it just need to see a few revolutions regardless of RPM?
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Old 9th December 2014
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Default 2000 Buell ECM with kickstart question

Anyone?? Perhaps a few more details. I am currently building a twin throttle bodied, reversed head kickstart Iron Head engine. I know this is the Buell section, but advice on Buell EFI/ECM is what I am in search of. I would like to use the complete ECM, sensors, gauges, ect. from an early Buell. I can use an extremely expensive aftermarket ECM and appropriate sensors, but would prefer factory (fairly) inexpensive items. Apart from machine work, creating intake runners, ect., the only issue I see would be the initial kickstarting cranking RPM. Does anyone know if there is a required minimum RPM needed, for this era ECM, to allow the bike to initially fire? Or, does it just need to see a few revolution signals from the ign rotor?
Thanks in advance.
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Old 9th December 2014
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Default

I assume you're going to have a battery also though to power up the ECM yes? SWAG would be that it might be able to spark in one or two rotations, but that's a SWAG.

EDIT - Dan at NRHS might be able to answer that.
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Old 9th December 2014
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Thank you for a reply. Yes, of course a battery. Possibly a generator replaced with a bolt in alt as well, to clean up any EMF.
I have been riding (daily) for the past 30ish years, and working on all sorts of machines, but am new to the Internet forum deal. What is NHRS?
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Old 9th December 2014
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Arggh, I'm always dyslexic with that name - Forum sponser:

http://www.nrhsperformance.com/index.shtml

Dan is a Buell nutcase, he's got a half dozen of em. Might now the answer of the top of his head or would likely have a better resource.

Battery to initialize the system is good, I would expect it doesn't take many rotations after that, but I don't know for sure. Mine cranks a couple of times before it lights, but that's cold, once warm it lights quick enough that I'm thinking a partial rotation might be sufficient.
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Old 9th December 2014
Jörgen Jörgen is offline
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This member has an IH with Buell EFI and has (according to the thread) conducted tests with kickstart.
Maybe useful.

http://xlforum.net/forums/s....php?t=1551411

/Jörgen
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  #8  
Old 9th December 2014
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Default

Thank you. I think I was the dyslexic one on that. Very similar build, with the exception of I am using two rear heads, with front int on left side center. Same principal of using mostly off the shelf components.
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