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The TWINS carb sync and vac line question

Started by Duct Tape, Thu 27, Aug 2009, 17:24:34

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Duct Tape

How many intakes are supposed to have vac lines running to them?  I thought all 6.  On the He-Twin the #1 and #3 intake vac ports are plugged.  All other four have vac lines.  On the She-Twin only the #3 and #4 have vac lines and the other four are plugged.  The She-Twin has a non-OEM fuel valve (I think Pingle) with no vac line connection.

He-Twin:  The previous owner told me the carbs were rejetted (probably Cobra) and have Cobra 6x6 exhaust.
She-Twin:  Previous owner didn't know if the carbs had been rejetted.  TBR 6x6 exhaust.

Ideas?
Rog
"Duct Tape"

Duct Tape

Quote from: Duct Tape on Thu 27, Aug 2009, 17:24:34
...  On the He-Twin the #1 and #3 intake vac ports are plugged.  All other four have vac lines...

Correction:  The He-Twin #2 is also plugged.
Rog
"Duct Tape"

Thunderbolt

#3 and #4 got to the pair valve system.  #6 goes to the petcock.  #1,#5 and #2 have caps. 

Gear Jammer

Quote from: Duct Tape on Thu 27, Aug 2009, 17:24:34
How many intakes are supposed to have vac lines running to them?  I thought all 6.  On the He-Twin the #1 and #3 intake vac ports are plugged.  All other four have vac lines.  On the She-Twin only the #3 and #4 have vac lines and the other four are plugged.  The She-Twin has a non-OEM fuel valve (I think Pingle) with no vac line connection.

He-Twin:  The previous owner told me the carbs were rejetted (probably Cobra) and have Cobra 6x6 exhaust.
She-Twin:  Previous owner didn't know if the carbs had been rejetted.  TBR 6x6 exhaust.

Ideas?

TBR's don't require a rejetting.



"The problems we face today exist because the people who work for a living are outnumbered by those who vote for a living.

Rocketman

Sounds like everything's in order (even if it's a little different config than normal).
Stock should have three vacuum lines (two for pair valve, one for petcock).  Pingle manual valve removes one of those.  Typically, the pair valve is 3 and 4, while petcock is 6.  If they're run to different intakes, who cares?  As long as the line reaches and isn't kinked, it should be fine.
Next time I see ya'll, I want a look at she-twin's Pingle.

QOTFU

Quote from: Rocketman on Fri 28, Aug 2009, 00:07:00
Sounds like everything's in order (even if it's a little different config than normal).
Stock should have three vacuum lines (two for pair valve, one for petcock).  Pingle manual valve removes one of those.  Typically, the pair valve is 3 and 4, while petcock is 6.  If they're run to different intakes, who cares?  As long as the line reaches and isn't kinked, it should be fine.
Next time I see ya'll, I want a look at she-twin's Pingle.

I'm  looking forward to that  :evil:

Gear Jammer

Quote from: QOTFU on Fri 28, Aug 2009, 10:03:35
Quote from: Rocketman on Fri 28, Aug 2009, 00:07:00
Sounds like everything's in order (even if it's a little different config than normal).
Stock should have three vacuum lines (two for pair valve, one for petcock).  Pingle manual valve removes one of those.  Typically, the pair valve is 3 and 4, while petcock is 6.  If they're run to different intakes, who cares?  As long as the line reaches and isn't kinked, it should be fine.
Next time I see ya'll, I want a look at she-twin's Pingle.

I'm  looking forward to that  :evil:

:-[



"The problems we face today exist because the people who work for a living are outnumbered by those who vote for a living.

Rocketman

Quote from: QOTFU on Fri 28, Aug 2009, 10:03:35
Quote from: Rocketman on Fri 28, Aug 2009, 00:07:00
Sounds like everything's in order (even if it's a little different config than normal).
Stock should have three vacuum lines (two for pair valve, one for petcock).  Pingle manual valve removes one of those.  Typically, the pair valve is 3 and 4, while petcock is 6.  If they're run to different intakes, who cares?  As long as the line reaches and isn't kinked, it should be fine.
Next time I see ya'll, I want a look at she-twin's Pingle.

I'm  looking forward to that  :evil:

Well, that's one way to increase attendance at our meeting...

(the first time I wrote my previous comment, I had it as "I want a look at she-twin's petcock", but that sounded wrong somehow.)