Broken Ankle
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
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From: la la land jerzey
you don't set the timing static on TDC
it is set at the advance mark on the flywheels
using a steel ruler in the front plug hole from the tdc of the ruler ( rock the engine back and forth to get the spot ) back the engine up 11/16 of an inch that is the correct spot to set the static timing
it is set at the advance mark on the flywheels
using a steel ruler in the front plug hole from the tdc of the ruler ( rock the engine back and forth to get the spot ) back the engine up 11/16 of an inch that is the correct spot to set the static timing
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6th Gear
Joined: Jun 2017
Posts: 14
Likes: 2
From: Anchorage, AK
you don't set the timing static on TDC
it is set at the advance mark on the flywheels
using a steel ruler in the front plug hole from the tdc of the ruler ( rock the engine back and forth to get the spot ) back the engine up 11/16 of an inch that is the correct spot to set the static timing
it is set at the advance mark on the flywheels
using a steel ruler in the front plug hole from the tdc of the ruler ( rock the engine back and forth to get the spot ) back the engine up 11/16 of an inch that is the correct spot to set the static timing
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
no your not but a stroked street size engine ends up around the same place at 11/16 - but the timing is 32 degrees instead of 36 degrees
this will give you a starting point for end tuning
this will give you a starting point for end tuning
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6th Gear
Joined: Jun 2017
Posts: 14
Likes: 2
From: Anchorage, AK
Awesome. Thanks a bunch!! makes sense that the displacement for that advance position would stay the same but the flywheel angle would change.
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6th Gear
Joined: Jun 2017
Posts: 14
Likes: 2
From: Anchorage, AK
Update 4/28:
I got the old girl to sing to me and proper compression test read at ~85 psi for both front and rear.
I talked to my old man, he thinks he put low compression pistons in the bike.
I got the old girl to sing to me and proper compression test read at ~85 psi for both front and rear.
I talked to my old man, he thinks he put low compression pistons in the bike.
Club Member
Joined: Mar 2009
Posts: 66,115
Likes: 51,405
From: Niles Canyon Ca.
.028 jet is on the small side for that size engine, bump it up to .029 or even .031, shovels like it a bit fatter. B cam isn't known for being kicker friendly either. @ 85psi a hole I'm thinking a well run 8-1 compression motor so the low comp pistons sound right. Truett & Osborn wheel will not have any markings you can see except the timing marks. John's advice on backing off the timing is spot on.
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6th Gear
Joined: Jun 2017
Posts: 14
Likes: 2
From: Anchorage, AK
.028 jet is on the small side for that size engine, bump it up to .029 or even .031, shovels like it a bit fatter. B cam isn't known for being kicker friendly either. @ 85psi a hole I'm thinking a well run 8-1 compression motor so the low comp pistons sound right. Truett & Osborn wheel will not have any markings you can see except the timing marks. John's advice on backing off the timing is spot on.
I've gone ahead and dialed back the timing. Thanks for the confirmation on the compression and i'll get myself a set of jets to play with.
Cheers
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,590
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From: Cental, MI
One hint... with a Bendix I always turn the idle Up at least a half turn to Kick-start..
If the idle is set Normal to Low... thay start much harder..
Mine do anyway..
Same with S&S carb... others???? IDK
If the idle is set Normal to Low... thay start much harder..
Mine do anyway..
Same with S&S carb... others???? IDK
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