« previous next »
Pages: [1]   Go Down

Author Topic: What timing on degrees?  (Read 996 times)

Offline renos-a10

  • A's Good Friend
  • ***
  • Join Date: Dec 2010
  • Posts: 209
  • Karma: 8
What timing on degrees?
« on: 28.02. 2011 08:49 »
Hi all,

If you change the piston STD with piston +20 High Comp.( 8.25 : 1 )
What timing must but on degrees with that piston?

Thanks
Renos
Logged
1954 BSA A10 Plunger
Cyprus

Offline muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 11046
  • Karma: 132
  • Lithgow NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: What timing on degrees?
« Reply #1 on: 28.02. 2011 11:36 »
G'day Renos,
                 timing would be the same, around 32 degrees or 5/16" before top dead center. I know the book says 3/8" BTDC but it might ping a bit at that.
Cheers
Logged
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7

Offline renos-a10

  • A's Good Friend
  • ***
  • Join Date: Dec 2010
  • Posts: 209
  • Karma: 8
Re: What timing on degrees?
« Reply #2 on: 01.03. 2011 08:24 »
Thanks a lot
Logged
1954 BSA A10 Plunger
Cyprus
Pages: [1]   Go Up
« previous next »