Volvo RWD 140-160 Forum

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ignition advance - Mega spark?? 140-160

posted by  rawits on  Mon Mar 29 10:21 CST 2010
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last visit: Sun Aug 3 12:32 CST 2014
[RELATED]

Modded B20 with singular knock low end 3rd and 4th, dual hsr's 10.4CR

some of you have followed my problems...could be lean condition, could be bastard cam...could be lot's of things.

doesn't idle too well below 15 BTDC. unfortunately have 123Ign dizzy cuz that's what i bought two yrs ago.

What about installing Megasquirt just to run advance curve??

Comments?








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    ignition advance - Mega spark?? 140-160

    posted by  someone claiming to be adconway on  Tue Apr 6 09:22 CST 2010 [RELATED]

    When in doubt (which I was recently because I soldered the plates together on my vacuum retard unit) I always set my total advance to 36 degrees at 3500 rpms and then leave the initial advance where it is. I know you have a fancy dizzy that has adjustable everything but this gets me on the boards every time to get my carbs sorted out.
    Aaron








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    ignition advance - Mega spark?? 140-160

    uid 37336's pic
    posted by  B20Paul. on  Tue Mar 30 03:58 CST 2010
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    last visit: Mon Oct 20 10:54 CST 2014
    [RELATED]

    Use one of the B20E curves in the ignition & set it to 10°BTDC at idle then sort your carburettors out.

    --
    Three 164's, Two 144's, One 142 & a partridge in a pear tree.








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    ignition advance - Mega spark?? 140-160

    posted by  walrus3 on  Mon Mar 29 16:01 CST 2010
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    last visit: Mon Dec 2 14:20 CST 2013
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    Don't you have a choice of several curves on the 123?
    And with 10.4:1 CR you should NOT be lugging in 3rd and 4th -- that is why you have first and second!
    You could certainly retard it a bit and then set the idle faster to compensate.
    --
    George Downs, Bartlesville, Heart of the USA!







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