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m48 honda triggers

 
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mh



Joined: 07 Mar 2004
Posts: 80
Location: ?lg?rd, Norway

PostPosted: Sat Jan 05, 2013 10:05 am    Post subject: m48 honda triggers Reply with quote

Hi,

i?ve just got my honda b16a2 running with a m48. runs fine, just
having some issues with cranking kickbacks. its as if the engine is kicked back by the timing being to early. I?ve got negative timing on cranking to try and get it to go away. (it has reduced it but not made it go away)

could it be the 3rd trigger wheel (4 teeth, not in use) in the distributor which is interfering with the ref signal? making the triggering wrong.

all settings are according to motec own document honda magnetic + module. for m4/m48 settings.

rfSn = 2
SYSn = 2

could i set these to to -1 and use the values for voltage that is included in the m800 details?

http://www.motec.com/search.php?keyword=honda+magnetic+%2B+module&contenttype=&submit=Search
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mh-fab
Welding - Fabrication - Wireharness
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Adam



Joined: 02 Dec 2011
Posts: 57

PostPosted: Sun Jan 06, 2013 11:47 am    Post subject: Reply with quote

Do you get any ref or sync errors showing in the diagnostics screen when this happens?
Whats the RPM and bat voltage showing during cranking? (use the View screen)
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nfn15037



Joined: 22 Dec 2005
Posts: 271
Location: New England

PostPosted: Sun Jan 06, 2013 4:21 pm    Post subject: Reply with quote

I just got finished with an M84 on a Honda S2000 F20C engine. In order to get it to crank smoothly with no kickback it required -15* of cranking timing. I couldn't get it to fire right and after a bit of messing with it found what worked.

A few weeks later I put my timing light on a stock S2000 and observed -20* or so (didn't mark the pulley that far back) of cranking timing off the stock ECU!
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mh



Joined: 07 Mar 2004
Posts: 80
Location: ?lg?rd, Norway

PostPosted: Mon Jan 07, 2013 4:51 am    Post subject: Reply with quote

I'm getting ref and sync errors when cranking and only then, i figured it was due to the kickbacks, if i crank and don't get a kickback there will be no ref or sync error.

cranking rpm is 200-250rpm.

i tried using the m800 voltage settings, it didn't change anything.

i'll try more negative timiming.
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mh-fab
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