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Question about Timing

Points Based Ignition | Electronic Ignition Upgrade
akpasta
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Posts: 342
Joined: Wed Oct 26, 2011 6:31 pm
Location: San Francisco

Post by akpasta » Sat Jul 14, 2012 5:19 pm

You both have good points, but unfortunately they're kind of contrary. Loud Mouse, have you ever had over-advance problems when you just set the points static, and not used a strobe? How far past the two marks can you go before you blow an engine? Is 'at the second line' too far?

Trying to find some consensus here.

LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Sat Jul 14, 2012 5:35 pm

One of the things I do is check for excess slack with the points cam by moving to the right with my fingers.
If there is very little/no slack then I do my adjustments.
A couple of years back I did check a couple of engines after I set them and the timing was at the first mark and dead on the "F" marks.
This is controlled mostly by the condition of the springs.
Do Not have the timing Past the marks.
With an optimum engine you set the timing between the 2 marks. ..............lm
akpasta wrote:You both have good points, but unfortunately they're kind of contrary. Loud Mouse, have you ever had over-advance problems when you just set the points static, and not used a strobe? How far past the two marks can you go before you blow an engine? Is 'at the second line' too far?

Trying to find some consensus here.

Tim Miller
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Posts: 242
Joined: Mon Jan 30, 2012 6:22 pm
Location: Pflugerville, TX

Post by Tim Miller » Sat Jul 14, 2012 7:03 pm

The centrifuglal advance springs only control how fast the advance curve comes in.
It does not control how much advance you will end up with.
Were and when the advance weights stop is what determines the amount of advance.
This is why you should always use a timing light.
The spring condition has nothing to do with how much total advance you will end up with.

akpasta, Your OK as long as you don't allow the total to go passed the second mark that is 48 deg. BTDC.

Tim

LOUD MOUSE wrote:One of the things I do is check for excess slack with the points cam by moving to the right with my fingers.
If there is very little/no slack then I do my adjustments.
A couple of years back I did check a couple of engines after I set them and the timing was at the first mark and dead on the "F" marks.
This is controlled mostly by the condition of the springs.
Do Not have the timing Past the marks.
With an optimum engine you set the timing between the 2 marks. ..............lm
akpasta wrote:You both have good points, but unfortunately they're kind of contrary. Loud Mouse, have you ever had over-advance problems when you just set the points static, and not used a strobe? How far past the two marks can you go before you blow an engine? Is 'at the second line' too far?

Trying to find some consensus here.

LOUD MOUSE
honda305.com Member
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Sat Jul 14, 2012 7:58 pm

I guess I'll need to stop discarding and replacing the stretched ones I find.
Good deal. ........lm
Tim Miller wrote:The centrifuglal advance springs only control how fast the advance curve comes in.
It does not control how much advance you will end up with.
Were and when the advance weights stop is what determines the amount of advance.
This is why you should always use a timing light.
The spring condition has nothing to do with how much total advance you will end up with.

akpasta, Your OK as long as you don't allow the total to go passed the second mark that is 48 deg. BTDC.

Tim

LOUD MOUSE wrote:One of the things I do is check for excess slack with the points cam by moving to the right with my fingers.
If there is very little/no slack then I do my adjustments.
A couple of years back I did check a couple of engines after I set them and the timing was at the first mark and dead on the "F" marks.
This is controlled mostly by the condition of the springs.
Do Not have the timing Past the marks.
With an optimum engine you set the timing between the 2 marks. ..............lm
akpasta wrote:You both have good points, but unfortunately they're kind of contrary. Loud Mouse, have you ever had over-advance problems when you just set the points static, and not used a strobe? How far past the two marks can you go before you blow an engine? Is 'at the second line' too far?

Trying to find some consensus here.

Tim Miller
honda305.com Member
Posts: 242
Joined: Mon Jan 30, 2012 6:22 pm
Location: Pflugerville, TX

Post by Tim Miller » Sat Jul 14, 2012 9:56 pm

I guess you will do what ever you like with your springs, but if there to stretched or loose the timing will be erratic at idle. Although that's going to require the timing light to witness.

Good luck,
Tim
LOUD MOUSE wrote:I guess I'll need to stop discarding and replacing the stretched ones I find.
Good deal. ........lm
Tim Miller wrote:The centrifuglal advance springs only control how fast the advance curve comes in.
It does not control how much advance you will end up with.
Were and when the advance weights stop is what determines the amount of advance.
This is why you should always use a timing light.
The spring condition has nothing to do with how much total advance you will end up with.

akpasta, Your OK as long as you don't allow the total to go passed the second mark that is 48 deg. BTDC.

Tim

LOUD MOUSE wrote:One of the things I do is check for excess slack with the points cam by moving to the right with my fingers.
If there is very little/no slack then I do my adjustments.
A couple of years back I did check a couple of engines after I set them and the timing was at the first mark and dead on the "F" marks.
This is controlled mostly by the condition of the springs.
Do Not have the timing Past the marks.
With an optimum engine you set the timing between the 2 marks. ..............lm
akpasta wrote:You both have good points, but unfortunately they're kind of contrary. Loud Mouse, have you ever had over-advance problems when you just set the points static, and not used a strobe? How far past the two marks can you go before you blow an engine? Is 'at the second line' too far?

Trying to find some consensus here.

LOUD MOUSE
honda305.com Member
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Sat Jul 14, 2012 11:32 pm

Good luck to you Tim. ..........lm
Tim Miller wrote:I guess you will do what ever you like with your springs, but if there to stretched or loose the timing will be erratic at idle. Although that's going to require the timing light to witness.

Good luck,
Tim
LOUD MOUSE wrote:I guess I'll need to stop discarding and replacing the stretched ones I find.
Good deal. ........lm
Tim Miller wrote:The centrifuglal advance springs only control how fast the advance curve comes in.
It does not control how much advance you will end up with.
Were and when the advance weights stop is what determines the amount of advance.
This is why you should always use a timing light.
The spring condition has nothing to do with how much total advance you will end up with.

akpasta, Your OK as long as you don't allow the total to go passed the second mark that is 48 deg. BTDC.

Tim

LOUD MOUSE wrote:One of the things I do is check for excess slack with the points cam by moving to the right with my fingers.
If there is very little/no slack then I do my adjustments.
A couple of years back I did check a couple of engines after I set them and the timing was at the first mark and dead on the "F" marks.
This is controlled mostly by the condition of the springs.
Do Not have the timing Past the marks.
With an optimum engine you set the timing between the 2 marks. ..............lm
akpasta wrote:You both have good points, but unfortunately they're kind of contrary. Loud Mouse, have you ever had over-advance problems when you just set the points static, and not used a strobe? How far past the two marks can you go before you blow an engine? Is 'at the second line' too far?

Trying to find some consensus here.

Tim Miller
honda305.com Member
Posts: 242
Joined: Mon Jan 30, 2012 6:22 pm
Location: Pflugerville, TX

Post by Tim Miller » Sun Jul 15, 2012 9:15 am

Thank you Ed, but it's your followers relying on your expertise to guide them, by using your timing recipe that really need the luck! Your timing process is suitable for locked-up advancers and for operating on the main stand while in your garage. Not all advancers have the same amount of curve. So if ya ride the bike above 3500 rpm without checking the total with a TIMING LIGHT as Honda engineers designed....then ya must like playing with fire and enjoy seizing pistons.

Tim

LOUD MOUSE wrote:Good luck to you Tim. ..........lm
Tim Miller wrote:I guess you will do what ever you like with your springs, but if there to stretched or loose the timing will be erratic at idle. Although that's going to require the timing light to witness.

Good luck,
Tim
LOUD MOUSE wrote:I guess I'll need to stop discarding and replacing the stretched ones I find.
Good deal. ........lm
Tim Miller wrote:The centrifuglal advance springs only control how fast the advance curve comes in.
It does not control how much advance you will end up with.
Were and when the advance weights stop is what determines the amount of advance.
This is why you should always use a timing light.
The spring condition has nothing to do with how much total advance you will end up with.

akpasta, Your OK as long as you don't allow the total to go passed the second mark that is 48 deg. BTDC.

Tim

LOUD MOUSE wrote:One of the things I do is check for excess slack with the points cam by moving to the right with my fingers.
If there is very little/no slack then I do my adjustments.
A couple of years back I did check a couple of engines after I set them and the timing was at the first mark and dead on the "F" marks.
This is controlled mostly by the condition of the springs.
Do Not have the timing Past the marks.
With an optimum engine you set the timing between the 2 marks. ..............lm
akpasta wrote:You both have good points, but unfortunately they're kind of contrary. Loud Mouse, have you ever had over-advance problems when you just set the points static, and not used a strobe? How far past the two marks can you go before you blow an engine? Is 'at the second line' too far?

Trying to find some consensus here.

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