Hi
I Am now running a power spark dizzy on my CU engine and have just watched sarran1955s video on the subject.
Can I just check. Do you set the timing to 8 BTDC without vacuum? This sounds right as it fits with the timing for the single vac factory unit?
Power spark dizzy timing
Moderators: User administrators, Moderators
-
- Registered user
- Posts: 92
- Joined: 26 Aug 2013, 15:11
- 80-90 Mem No: 12781
- Location: Welton, East Yorks
Power spark dizzy timing
Ultimately, are we not all air cooled?
1981 Devon Moonraker, CU engine
1981 Devon Moonraker, CU engine
- bigherb
- Registered user
- Posts: 2579
- Joined: 27 Mar 2008, 13:50
- 80-90 Mem No: 5789
- Location: West Kent
Re: Power spark dizzy timing
Yes, but then importantly make sure the timing advances to 28-32 deg BTDC @ over 3500 rpm vac still disconnected, and then make sure the timing then returns to 8 deg at idle.
1982 Camper 1970 1500 Beetle Various Skoda's, Ariel Arrow
-
- Registered user
- Posts: 92
- Joined: 26 Aug 2013, 15:11
- 80-90 Mem No: 12781
- Location: Welton, East Yorks
Re: Power spark dizzy timing
Many thanks.
I’ll get my strobe out tomorrow.
Just out of interest Do you know how much extra the vacuum Will add at 50= 60 mph? I have read that some engines cruse at upto 50 BTDC??
I’ll get my strobe out tomorrow.
Just out of interest Do you know how much extra the vacuum Will add at 50= 60 mph? I have read that some engines cruse at upto 50 BTDC??
Ultimately, are we not all air cooled?
1981 Devon Moonraker, CU engine
1981 Devon Moonraker, CU engine
- bigherb
- Registered user
- Posts: 2579
- Joined: 27 Mar 2008, 13:50
- 80-90 Mem No: 5789
- Location: West Kent
Re: Power spark dizzy timing
Maximum vac advance is 12 deg but only works at part throttle under when the engine is under load.
1982 Camper 1970 1500 Beetle Various Skoda's, Ariel Arrow