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timing for vivs new motor

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czerial

Post subject: timing for vivs new motor

Posted: Wed Mar 30, 2005 10:58 pm

1275cc

Joined: Fri Oct 15, 2004 2:46 pm
Posts: 5281

so to all that dont know the specs
998cc (60 thou over 1060cc)
1.5 carb
997 cooper cam
everything else standard...

so what should the timing be? standard? or modified to cope with the new cam???

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drmini in aust

Post subject:

Posted: Wed Mar 30, 2005 11:03 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39755
Location: near Baulkham Hills, NSW

I'd start at 7*BTDC (check with vac pipe off), then advance it until it runs best. Depends on many things- cam, C/R, head shape, mech advance curve in dizzy, etc etc. Timing correctly for power is more important than getting it to spec at idle.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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czerial

Post subject:

Posted: Wed Mar 30, 2005 11:09 pm

1275cc

Joined: Fri Oct 15, 2004 2:46 pm
Posts: 5281

mine doesnt have a vac pipe on distributor...but i hear what your saying, thanks doc :wink:

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