Where can I get ignition map sample ?

James Ballenger vtjballeng at yifan.net
Mon Jan 15 09:13:32 GMT 2001


	As was pointed out, this is extremely engine dependant.  For a 600cc
Honda F3 engine, it will apparently take 30-37 degrees above 4000 rpm under
full (7psi) boost but this was for a restricted engine.  Were you getting a
good steady signal for ignition?

James Ballenger

>-----Original Message-----
>From: owner-diy_efi at diy-efi.org 
>[mailto:owner-diy_efi at diy-efi.org]On Behalf Of RD1ªL¥x¥Í
>Sent: Monday, January 15, 2001 12:29 AM
>To: diy_efi at diy-efi.org
>Subject: RE: Where can I get ignition map sample ?
>
>
>There is no big holes in the top of piston.
>But the pistion rings melt into a mass.
>In other words, the flank of piston is damaged.
>
>How much timing is safe under boost ?
>
>Regards,
>Tyson.
>
>-----Original Message-----
>From: Rob O [mailto:rjo1 at home.com]
>Sent: Monday, January 15, 2001 11:58 AM
>To: diy_efi at diy-efi.org
>Subject: Re: Where can I get ignition map sample ?
>
>
>That much timing under boost is probably what blew your 
>engine. You need
>the timing to drop under boost. Most of the people I know of 
>running the
>Haltech are also using the J&S knockguard, the new version even allows
>you to modify the timing curve while under boost
>
>What was the failure mode of the engine? Big holes in the top of the
>pistons?
>
>Rob_O
>
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